starlingx/integ
Code Issues Proposed changes

Add kubernetes 1.22.5 pkg

Browse Source 
Here are the changes needed for adding k8s v1.22.5
in StarlingX alongside with the changes needed
for the build environment to find and build the package.

The package builds successfully.
Deployed an iso with k8s 1.22.5 on
AIO-SX and AIO-DX. The deployment phase
works and the pods are up and running after
the upgrade completes.

Story: 2009789
Task: 44305
Signed-off-by: Daniel Safta <daniel.safta@windriver.com>
Change-Id: Ibb9be075fa0b1491b9ab1854ebb1fddf4df53461
This commit is contained in:
Daniel Safta 2022-01-19 09:35:50 +00:00
parent df3b902e6b
commit a046a7a650
16 changed files with 6337 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
centos_iso_image.inc
View File

@ -168,6 +168,9 @@ kubernetes-1.20.9-client
kubernetes-1.21.8-node
kubernetes-1.21.8-kubeadm
kubernetes-1.21.8-client
kubernetes-1.22.5-node
kubernetes-1.22.5-kubeadm
kubernetes-1.22.5-client
containerd
k8s-pod-recovery
k8s-cni-cache-cleanup

1
centos_pkg_dirs
View File

@ -58,6 +58,7 @@ kubernetes/kubernetes-1.18.1
kubernetes/kubernetes-1.19.13
kubernetes/kubernetes-1.20.9
kubernetes/kubernetes-1.21.8
kubernetes/kubernetes-1.22.5
kubernetes/kubernetes-unversioned
kubernetes/docker-distribution
kubernetes/etcd

1
centos_tarball-dl.lst
View File

@ -46,6 +46,7 @@ kubernetes-v1.18.1.tar.gz#kubernetes-1.18.1#https://github.com/kubernetes/kubern
kubernetes-v1.19.13.tar.gz#kubernetes-1.19.13#https://github.com/kubernetes/kubernetes/archive/refs/tags/v1.19.13.tar.gz#http##
kubernetes-v1.20.9.tar.gz#kubernetes-1.20.9#https://github.com/kubernetes/kubernetes/archive/refs/tags/v1.20.9.tar.gz#http##
kubernetes-v1.21.8.tar.gz#kubernetes-1.21.8#https://github.com/kubernetes/kubernetes/archive/refs/tags/v1.21.8.tar.gz#http##
kubernetes-v1.22.5.tar.gz#kubernetes-1.22.5#https://github.com/kubernetes/kubernetes/archive/refs/tags/v1.22.5.tar.gz#http##
kvm-unit-tests.git-4ea7633.tar.bz2#kvm-unit-tests#https://git.kernel.org/pub/scm/virt/kvm/kvm-unit-tests.git/snapshot/kvm-unit-tests-20171020.tar.gz#http##
ldapscripts-2.0.8.tgz#ldapscripts-2.0.8#https://sourceforge.net/projects/ldapscripts/files/ldapscripts/ldapscripts-2.0.8/ldapscripts-2.0.8.tgz/download#http##
libbpf-0.5.0.tar.gz#libbpf-0.5.0#https://github.com/libbpf/libbpf/archive/v0.5.0.tar.gz#https##

4
kubernetes/kubernetes-1.22.5/centos/Readme.rst Normal file
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@ -0,0 +1,4 @@
The spec file used here was from the kubernetes 1.10.0 src rpm.
The orig file is included to help show modifications made to that
spec file, to help understand which changes were needed and to
assist with future upversioning.

5
kubernetes/kubernetes-1.22.5/centos/build_srpm.data Normal file
View File

@ -0,0 +1,5 @@
VERSION=1.22.5
TAR_NAME=kubernetes
TAR="$TAR_NAME-v$VERSION.tar.gz"
COPY_LIST="${CGCS_BASE}/downloads/$TAR $FILES_BASE/*"
TIS_PATCH_VER=PKG_GITREVCOUNT

117
kubernetes/kubernetes-1.22.5/centos/files/Revert-use-subpath-for-coredns-only-for-default-repo.patch Normal file
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@ -0,0 +1,117 @@
From b90e3858a8d319c7526dd8190ee05edce24ba072 Mon Sep 17 00:00:00 2001
From: Jim Gauld <james.gauld@windriver.com>
Date: Thu, 9 Sep 2021 13:16:26 -0400
Subject: [PATCH 7/7] Revert "use subpath for coredns only for default
repository"
This reverts commit 38a41e1557649a7cc763bf737779db9aa03ec75e.
---
cmd/kubeadm/app/constants/constants.go | 2 +-
cmd/kubeadm/app/images/images.go | 5 ---
cmd/kubeadm/app/images/images_test.go | 50 --------------------------
3 files changed, 1 insertion(+), 56 deletions(-)
diff --git a/cmd/kubeadm/app/constants/constants.go b/cmd/kubeadm/app/constants/constants.go
index b3559734..95338949 100644
--- a/cmd/kubeadm/app/constants/constants.go
+++ b/cmd/kubeadm/app/constants/constants.go
@@ -322,7 +322,7 @@ const (
CoreDNSDeploymentName = "coredns"
// CoreDNSImageName specifies the name of the image for CoreDNS add-on
- CoreDNSImageName = "coredns"
+ CoreDNSImageName = "coredns/coredns"
// CoreDNSVersion is the version of CoreDNS to be deployed if it is used
CoreDNSVersion = "v1.8.4"
diff --git a/cmd/kubeadm/app/images/images.go b/cmd/kubeadm/app/images/images.go
index 7e97dbc9..187c7189 100644
--- a/cmd/kubeadm/app/images/images.go
+++ b/cmd/kubeadm/app/images/images.go
@@ -20,7 +20,6 @@ import (
"fmt"
kubeadmapi "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm"
- kubeadmapiv1beta2 "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1beta2"
"k8s.io/kubernetes/cmd/kubeadm/app/constants"
kubeadmutil "k8s.io/kubernetes/cmd/kubeadm/app/util"
@@ -48,10 +47,6 @@ func GetDNSImage(cfg *kubeadmapi.ClusterConfiguration) string {
if cfg.DNS.ImageRepository != "" {
dnsImageRepository = cfg.DNS.ImageRepository
}
- // Handle the renaming of the official image from "k8s.gcr.io/coredns" to "k8s.gcr.io/coredns/coredns
- if dnsImageRepository == kubeadmapiv1beta2.DefaultImageRepository {
- dnsImageRepository = fmt.Sprintf("%s/coredns", dnsImageRepository)
- }
// DNS uses an imageTag that corresponds to the DNS version matching the Kubernetes version
dnsImageTag := constants.CoreDNSVersion
diff --git a/cmd/kubeadm/app/images/images_test.go b/cmd/kubeadm/app/images/images_test.go
index 2fd9d3f5..9f363939 100644
--- a/cmd/kubeadm/app/images/images_test.go
+++ b/cmd/kubeadm/app/images/images_test.go
@@ -22,7 +22,6 @@ import (
"testing"
kubeadmapi "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm"
- kubeadmapiv1beta2 "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1beta2"
"k8s.io/kubernetes/cmd/kubeadm/app/constants"
)
@@ -226,52 +225,3 @@ func TestGetAllImages(t *testing.T) {
})
}
}
-
-func TestGetDNSImage(t *testing.T) {
- var tests = []struct {
- expected string
- cfg *kubeadmapi.ClusterConfiguration
- }{
- {
- expected: "foo.io/coredns:v1.8.4",
- cfg: &kubeadmapi.ClusterConfiguration{
- ImageRepository: "foo.io",
- DNS: kubeadmapi.DNS{
- Type: kubeadmapi.CoreDNS,
- },
- },
- },
- {
- expected: kubeadmapiv1beta2.DefaultImageRepository + "/coredns/coredns:v1.8.4",
- cfg: &kubeadmapi.ClusterConfiguration{
- ImageRepository: kubeadmapiv1beta2.DefaultImageRepository,
- DNS: kubeadmapi.DNS{
- Type: kubeadmapi.CoreDNS,
- },
- },
- },
- {
- expected: "foo.io/coredns/coredns:v1.8.4",
- cfg: &kubeadmapi.ClusterConfiguration{
- ImageRepository: "foo.io",
- DNS: kubeadmapi.DNS{
- Type: kubeadmapi.CoreDNS,
- ImageMeta: kubeadmapi.ImageMeta{
- ImageRepository: "foo.io/coredns",
- },
- },
- },
- },
- }
-
- for _, test := range tests {
- actual := GetDNSImage(test.cfg)
- if actual != test.expected {
- t.Errorf(
- "failed to GetDNSImage:\n\texpected: %s\n\t actual: %s",
- test.expected,
- actual,
- )
- }
- }
-}
--
2.17.1

79
kubernetes/kubernetes-1.22.5/centos/files/enable-support-for-kubernetes-to-ignore-isolcpus.patch Normal file
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@ -0,0 +1,79 @@
From 087dcfa1a84ec38541fa9870937d76b80a707e2c Mon Sep 17 00:00:00 2001
From: Chris Friesen <chris.friesen@windriver.com>
Date: Fri, 23 Oct 2020 17:46:10 -0600
Subject: [PATCH 6/7] enable support for kubernetes to ignore isolcpus
The normal mechanisms for allocating isolated CPUs do not allow
a mix of isolated and exclusive CPUs in the same container. In
order to allow this in *very* limited cases where the pod spec
is known in advance we will add the ability to disable the normal
isolcpus behaviour.
If the file "/etc/kubernetes/ignore_isolcpus" exists, then kubelet
will basically forget everything it knows about isolcpus and just
treat them like regular CPUs.
The admin user can then rely on the fact that CPU allocation is
deterministic to ensure that the isolcpus they configure end up being
allocated to the correct pods.
Signed-off-by: Daniel Safta <daniel.safta@windriver.com>
---
pkg/kubelet/cm/cpumanager/cpu_manager.go | 8 ++++++++
pkg/kubelet/cm/cpumanager/policy_static.go | 7 +++++++
2 files changed, 15 insertions(+)
diff --git a/pkg/kubelet/cm/cpumanager/cpu_manager.go b/pkg/kubelet/cm/cpumanager/cpu_manager.go
index 2f5b06dc..d9ec63bb 100644
--- a/pkg/kubelet/cm/cpumanager/cpu_manager.go
+++ b/pkg/kubelet/cm/cpumanager/cpu_manager.go
@@ -20,6 +20,7 @@ import (
"fmt"
"io/ioutil"
"math"
+ "os"
"strings"
"sync"
"time"
@@ -55,6 +56,13 @@ const cpuManagerStateFileName = "cpu_manager_state"
// get the system-level isolated CPUs
func getIsolcpus() cpuset.CPUSet {
+ // This is a gross hack to basically turn off awareness of isolcpus to enable
+ // isolated cpus to be allocated to pods the same way as non-isolated CPUs.
+ if _, err := os.Stat("/etc/kubernetes/ignore_isolcpus"); err == nil {
+ klog.Infof("[cpumanager] turning off isolcpus awareness")
+ return cpuset.NewCPUSet()
+ }
+
dat, err := ioutil.ReadFile("/sys/devices/system/cpu/isolated")
if err != nil {
klog.Errorf("[cpumanager] unable to read sysfs isolcpus subdir")
diff --git a/pkg/kubelet/cm/cpumanager/policy_static.go b/pkg/kubelet/cm/cpumanager/policy_static.go
index 72a99496..ee389a85 100644
--- a/pkg/kubelet/cm/cpumanager/policy_static.go
+++ b/pkg/kubelet/cm/cpumanager/policy_static.go
@@ -18,6 +18,7 @@ package cpumanager
import (
"fmt"
+ "os"
"strconv"
v1 "k8s.io/api/core/v1"
@@ -658,6 +659,12 @@ func isKubeInfra(pod *v1.Pod) bool {
// get the isolated CPUs (if any) from the devices associated with a specific container
func (p *staticPolicy) podIsolCPUs(pod *v1.Pod, container *v1.Container) cpuset.CPUSet {
+ // This is a gross hack to basically turn off awareness of isolcpus to enable
+ // isolated cpus to be allocated to pods the same way as non-isolated CPUs.
+ if _, err := os.Stat("/etc/kubernetes/ignore_isolcpus"); err == nil {
+ return cpuset.NewCPUSet()
+ }
+
// NOTE: This is required for TestStaticPolicyAdd() since makePod() does
// not create UID. We also need a way to properly stub devicemanager.
if len(string(pod.UID)) == 0 {
--
2.17.1

108
kubernetes/kubernetes-1.22.5/centos/files/kubeadm-create-platform-pods-with-zero-CPU-resources.patch Normal file
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@ -0,0 +1,108 @@
From de653bd0823b248d623a39c17a3872e85ce952b0 Mon Sep 17 00:00:00 2001
From: Chris Friesen <chris.friesen@windriver.com>
Date: Fri, 3 Sep 2021 18:05:15 -0400
Subject: [PATCH 5/7] kubeadm: create platform pods with zero CPU resources
We want to specify zero CPU resources when creating the manifests
for the static platform pods, as a workaround for the lack of
separate resource tracking for platform resources.
We also specify zero CPU resources for the coredns deployment.
manifests.go appears to be the main file for this, not sure if the
others are used but I changed them just in case.
Signed-off-by: Daniel Safta <daniel.safta@windriver.com>
---
cluster/addons/dns/coredns/coredns.yaml.base | 2 +-
cluster/addons/dns/coredns/coredns.yaml.in | 2 +-
cluster/addons/dns/coredns/coredns.yaml.sed | 2 +-
cmd/kubeadm/app/phases/addons/dns/manifests.go | 2 +-
cmd/kubeadm/app/phases/controlplane/manifests.go | 6 +++---
5 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/cluster/addons/dns/coredns/coredns.yaml.base b/cluster/addons/dns/coredns/coredns.yaml.base
index 4ee054f8ba5..d2b58f4af0e 100644
--- a/cluster/addons/dns/coredns/coredns.yaml.base
+++ b/cluster/addons/dns/coredns/coredns.yaml.base
@@ -138,7 +138,7 @@ spec:
limits:
memory: __DNS__MEMORY__LIMIT__
requests:
- cpu: 100m
+ cpu: 0
memory: 70Mi
args: [ "-conf", "/etc/coredns/Corefile" ]
volumeMounts:
diff --git a/cluster/addons/dns/coredns/coredns.yaml.in b/cluster/addons/dns/coredns/coredns.yaml.in
index 1f791e447c9..ff03a801646 100644
--- a/cluster/addons/dns/coredns/coredns.yaml.in
+++ b/cluster/addons/dns/coredns/coredns.yaml.in
@@ -138,7 +138,7 @@ spec:
limits:
memory: 'dns_memory_limit'
requests:
- cpu: 100m
+ cpu: 0
memory: 70Mi
args: [ "-conf", "/etc/coredns/Corefile" ]
volumeMounts:
diff --git a/cluster/addons/dns/coredns/coredns.yaml.sed b/cluster/addons/dns/coredns/coredns.yaml.sed
index 4d64278aaa4..38fc9196b28 100644
--- a/cluster/addons/dns/coredns/coredns.yaml.sed
+++ b/cluster/addons/dns/coredns/coredns.yaml.sed
@@ -138,7 +138,7 @@ spec:
limits:
memory: $DNS_MEMORY_LIMIT
requests:
- cpu: 100m
+ cpu: 0
memory: 70Mi
args: [ "-conf", "/etc/coredns/Corefile" ]
volumeMounts:
diff --git a/cmd/kubeadm/app/phases/addons/dns/manifests.go b/cmd/kubeadm/app/phases/addons/dns/manifests.go
index 3ac6856bfc6..0763b4c63db 100644
--- a/cmd/kubeadm/app/phases/addons/dns/manifests.go
+++ b/cmd/kubeadm/app/phases/addons/dns/manifests.go
@@ -95,7 +95,7 @@ spec:
limits:
memory: 170Mi
requests:
- cpu: 100m
+ cpu: 0
memory: 70Mi
args: [ "-conf", "/etc/coredns/Corefile" ]
volumeMounts:
diff --git a/cmd/kubeadm/app/phases/controlplane/manifests.go b/cmd/kubeadm/app/phases/controlplane/manifests.go
index 8181bea63a4..4c4b4448dd4 100644
--- a/cmd/kubeadm/app/phases/controlplane/manifests.go
+++ b/cmd/kubeadm/app/phases/controlplane/manifests.go
@@ -60,7 +60,7 @@ func GetStaticPodSpecs(cfg *kubeadmapi.ClusterConfiguration, endpoint *kubeadmap
LivenessProbe: staticpodutil.LivenessProbe(staticpodutil.GetAPIServerProbeAddress(endpoint), "/livez", int(endpoint.BindPort), v1.URISchemeHTTPS),
ReadinessProbe: staticpodutil.ReadinessProbe(staticpodutil.GetAPIServerProbeAddress(endpoint), "/readyz", int(endpoint.BindPort), v1.URISchemeHTTPS),
StartupProbe: staticpodutil.StartupProbe(staticpodutil.GetAPIServerProbeAddress(endpoint), "/livez", int(endpoint.BindPort), v1.URISchemeHTTPS, cfg.APIServer.TimeoutForControlPlane),
- Resources: staticpodutil.ComponentResources("250m"),
+ Resources: staticpodutil.ComponentResources("0"),
Env: kubeadmutil.GetProxyEnvVars(),
}, mounts.GetVolumes(kubeadmconstants.KubeAPIServer),
map[string]string{kubeadmconstants.KubeAPIServerAdvertiseAddressEndpointAnnotationKey: endpoint.String()}),
@@ -72,7 +72,7 @@ func GetStaticPodSpecs(cfg *kubeadmapi.ClusterConfiguration, endpoint *kubeadmap
VolumeMounts: staticpodutil.VolumeMountMapToSlice(mounts.GetVolumeMounts(kubeadmconstants.KubeControllerManager)),
LivenessProbe: staticpodutil.LivenessProbe(staticpodutil.GetControllerManagerProbeAddress(cfg), "/healthz", kubeadmconstants.KubeControllerManagerPort, v1.URISchemeHTTPS),
StartupProbe: staticpodutil.StartupProbe(staticpodutil.GetControllerManagerProbeAddress(cfg), "/healthz", kubeadmconstants.KubeControllerManagerPort, v1.URISchemeHTTPS, cfg.APIServer.TimeoutForControlPlane),
- Resources: staticpodutil.ComponentResources("200m"),
+ Resources: staticpodutil.ComponentResources("0"),
Env: kubeadmutil.GetProxyEnvVars(),
}, mounts.GetVolumes(kubeadmconstants.KubeControllerManager), nil),
kubeadmconstants.KubeScheduler: staticpodutil.ComponentPod(v1.Container{
@@ -83,7 +83,7 @@ func GetStaticPodSpecs(cfg *kubeadmapi.ClusterConfiguration, endpoint *kubeadmap
VolumeMounts: staticpodutil.VolumeMountMapToSlice(mounts.GetVolumeMounts(kubeadmconstants.KubeScheduler)),
LivenessProbe: staticpodutil.LivenessProbe(staticpodutil.GetSchedulerProbeAddress(cfg), "/healthz", kubeadmconstants.KubeSchedulerPort, v1.URISchemeHTTPS),
StartupProbe: staticpodutil.StartupProbe(staticpodutil.GetSchedulerProbeAddress(cfg), "/healthz", kubeadmconstants.KubeSchedulerPort, v1.URISchemeHTTPS, cfg.APIServer.TimeoutForControlPlane),
- Resources: staticpodutil.ComponentResources("100m"),
+ Resources: staticpodutil.ComponentResources("0"),
Env: kubeadmutil.GetProxyEnvVars(),
}, mounts.GetVolumes(kubeadmconstants.KubeScheduler), nil),
}
--
2.17.1

17
kubernetes/kubernetes-1.22.5/centos/files/kubeadm.conf Normal file
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@ -0,0 +1,17 @@
# Note: This dropin only works with kubeadm and kubelet v1.11+
[Service]
Environment="KUBELET_KUBECONFIG_ARGS=--bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --kubeconfig=/etc/kubernetes/kubelet.conf"
Environment="KUBELET_CONFIG_ARGS=--config=/var/lib/kubelet/config.yaml"
# This is a file that "kubeadm init" and "kubeadm join" generates at runtime, populating the KUBELET_KUBEADM_ARGS variable dynamically
EnvironmentFile=-/var/lib/kubelet/kubeadm-flags.env
# This is a file that the user can use for overrides of the kubelet args as a last resort. Preferably, the user should use
# the .NodeRegistration.KubeletExtraArgs object in the configuration files instead. KUBELET_EXTRA_ARGS should be sourced from this file.
EnvironmentFile=-/etc/sysconfig/kubelet
ExecStart=
ExecStart=/usr/bin/kubelet $KUBELET_KUBECONFIG_ARGS $KUBELET_CONFIG_ARGS $KUBELET_KUBEADM_ARGS $KUBELET_EXTRA_ARGS
ExecStartPre=-/usr/bin/kubelet-cgroup-setup.sh
ExecStartPost=/bin/bash -c 'echo $MAINPID > /var/run/kubelet.pid;'
ExecStopPost=/bin/rm -f /var/run/kubelet.pid
Restart=always
StartLimitInterval=0
RestartSec=10

132
kubernetes/kubernetes-1.22.5/centos/files/kubelet-cgroup-setup.sh Normal file
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@ -0,0 +1,132 @@
#!/bin/bash
#
# Copyright (c) 2019 Wind River Systems, Inc.
#
# SPDX-License-Identifier: Apache-2.0
#
# This script does minimal cgroup setup for kubelet. This creates k8s-infra
# cgroup for a minimal set of resource controllers, and configures cpuset
# attributes to span all online cpus and nodes. This will do nothing if
# the k8s-infra cgroup already exists (i.e., assume already configured).
# NOTE: The creation of directories under /sys/fs/cgroup is volatile, and
# does not persist reboots. The cpuset.mems and cpuset.cpus is later updated
# by puppet kubernetes.pp manifest.
#
# Define minimal path
PATH=/bin:/usr/bin:/usr/local/bin
# Log info message to /var/log/daemon.log
function LOG {
logger -p daemon.info "$0($$): $@"
}
# Log error message to /var/log/daemon.log
function ERROR {
logger -s -p daemon.error "$0($$): ERROR: $@"
}
# Create minimal cgroup directories and configure cpuset attributes if required
function create_cgroup {
local cg_name=$1
local cg_nodeset=$2
local cg_cpuset=$3
local CGROUP=/sys/fs/cgroup
local CONTROLLERS_AUTO_DELETED=("pids" "hugetlb")
local CONTROLLERS_PRESERVED=("cpuset" "memory" "cpu,cpuacct" "systemd")
local cnt=''
local CGDIR=''
local RC=0
# Ensure that these cgroups are created every time as they are auto deleted
for cnt in ${CONTROLLERS_AUTO_DELETED[@]}; do
CGDIR=${CGROUP}/${cnt}/${cg_name}
if [ -d ${CGDIR} ]; then
LOG "Nothing to do, already configured: ${CGDIR}."
continue
fi
LOG "Creating: ${CGDIR}"
mkdir -p ${CGDIR}
RC=$?
if [ ${RC} -ne 0 ]; then
ERROR "Creating: ${CGDIR}, rc=${RC}"
exit ${RC}
fi
done
# These cgroups are preserved so if any of these are encountered additional
# cgroup setup is not required
for cnt in ${CONTROLLERS_PRESERVED[@]}; do
CGDIR=${CGROUP}/${cnt}/${cg_name}
if [ -d ${CGDIR} ]; then
LOG "Nothing to do, already configured: ${CGDIR}."
exit ${RC}
fi
LOG "Creating: ${CGDIR}"
mkdir -p ${CGDIR}
RC=$?
if [ ${RC} -ne 0 ]; then
ERROR "Creating: ${CGDIR}, rc=${RC}"
exit ${RC}
fi
done
# Customize cpuset attributes
LOG "Configuring cgroup: ${cg_name}, nodeset: ${cg_nodeset}, cpuset: ${cg_cpuset}"
CGDIR=${CGROUP}/cpuset/${cg_name}
local CGMEMS=${CGDIR}/cpuset.mems
local CGCPUS=${CGDIR}/cpuset.cpus
local CGTASKS=${CGDIR}/tasks
# Assign cgroup memory nodeset
LOG "Assign nodeset ${cg_nodeset} to ${CGMEMS}"
/bin/echo ${cg_nodeset} > ${CGMEMS}
RC=$?
if [ ${RC} -ne 0 ]; then
ERROR "Unable to write to: ${CGMEMS}, rc=${RC}"
exit ${RC}
fi
# Assign cgroup cpus
LOG "Assign cpuset ${cg_cpuset} to ${CGCPUS}"
/bin/echo ${cg_cpuset} > ${CGCPUS}
RC=$?
if [ ${RC} -ne 0 ]; then
ERROR "Assigning: ${cg_cpuset} to ${CGCPUS}, rc=${RC}"
exit ${RC}
fi
# Set file ownership
chown root:root ${CGMEMS} ${CGCPUS} ${CGTASKS}
RC=$?
if [ ${RC} -ne 0 ]; then
ERROR "Setting owner for: ${CGMEMS}, ${CGCPUS}, ${CGTASKS}, rc=${RC}"
exit ${RC}
fi
# Set file mode permissions
chmod 644 ${CGMEMS} ${CGCPUS} ${CGTASKS}
RC=$?
if [ ${RC} -ne 0 ]; then
ERROR "Setting mode for: ${CGMEMS}, ${CGCPUS}, ${CGTASKS}, rc=${RC}"
exit ${RC}
fi
return ${RC}
}
if [ $UID -ne 0 ]; then
ERROR "Require sudo/root."
exit 1
fi
# Configure default kubepods cpuset to span all online cpus and nodes.
ONLINE_NODESET=$(/bin/cat /sys/devices/system/node/online)
ONLINE_CPUSET=$(/bin/cat /sys/devices/system/cpu/online)
# Configure kubelet cgroup to match cgroupRoot.
create_cgroup 'k8s-infra' ${ONLINE_NODESET} ${ONLINE_CPUSET}
exit $?

297
kubernetes/kubernetes-1.22.5/centos/files/kubelet-cpumanager-disable-CFS-quota-throttling-for-.patch Normal file
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@ -0,0 +1,297 @@
From 3f69868f7bca99f6875dd4d197b3a974d1b558ed Mon Sep 17 00:00:00 2001
From: Daniel Safta <daniel.safta@windriver.com>
Date: Wed, 22 Sep 2021 10:09:06 -0400
Subject: [PATCH 1/7] kubelet cpumanager disable CFS quota throttling for
Guaranteed pods
This disables CFS CPU quota to avoid performance degradation due to
Linux kernel CFS quota implementation. Note that 4.18 kernel attempts
to solve the CFS throttling problem, but there are reports that it is
not completely effective.
This disables CFS quota throttling for Guaranteed pods for both
parent and container cgroups by writing -1 to cgroup cpu.cfs_quota_us.
Disabling has a dramatic latency improvement for HTTP response times.
This patch is refactored in 1.21.3 due to new internal_container_lifecycle
framework. We leverage the same mechanism to set Linux resources as:
cpu manager: specify the container CPU set during the creation
(commit 38dc7509f862f081828e7d9167107b8c6e98ea23).
Signed-off-by: Daniel Safta <daniel.safta@windriver.com>
Co-authored-by: Jim Gauld <james.gauld@windriver.com>
---
pkg/kubelet/cm/cpumanager/cpu_manager.go | 7 +++
pkg/kubelet/cm/cpumanager/fake_cpu_manager.go | 12 +++--
pkg/kubelet/cm/helpers_linux.go | 12 ++++-
pkg/kubelet/cm/helpers_linux_test.go | 45 ++++++++++---------
.../cm/internal_container_lifecycle_linux.go | 12 ++++-
5 files changed, 61 insertions(+), 27 deletions(-)
diff --git a/pkg/kubelet/cm/cpumanager/cpu_manager.go b/pkg/kubelet/cm/cpumanager/cpu_manager.go
index 4777c132..29194271 100644
--- a/pkg/kubelet/cm/cpumanager/cpu_manager.go
+++ b/pkg/kubelet/cm/cpumanager/cpu_manager.go
@@ -72,6 +72,9 @@ type Manager interface {
// State returns a read-only interface to the internal CPU manager state.
State() state.Reader
+ // GetCPUPolicy returns the assigned CPU manager policy
+ GetCPUPolicy() string
+
// GetTopologyHints implements the topologymanager.HintProvider Interface
// and is consulted to achieve NUMA aware resource alignment among this
// and other resource controllers.
@@ -310,6 +313,10 @@ func (m *manager) State() state.Reader {
return m.state
}
+func (m *manager) GetCPUPolicy() string {
+ return m.policy.Name()
+}
+
func (m *manager) GetTopologyHints(pod *v1.Pod, container *v1.Container) map[string][]topologymanager.TopologyHint {
// The pod is during the admission phase. We need to save the pod to avoid it
// being cleaned before the admission ended
diff --git a/pkg/kubelet/cm/cpumanager/fake_cpu_manager.go b/pkg/kubelet/cm/cpumanager/fake_cpu_manager.go
index 28578e64..018f13b6 100644
--- a/pkg/kubelet/cm/cpumanager/fake_cpu_manager.go
+++ b/pkg/kubelet/cm/cpumanager/fake_cpu_manager.go
@@ -17,7 +17,7 @@ limitations under the License.
package cpumanager
import (
- "k8s.io/api/core/v1"
+ v1 "k8s.io/api/core/v1"
"k8s.io/klog/v2"
"k8s.io/kubernetes/pkg/kubelet/cm/containermap"
"k8s.io/kubernetes/pkg/kubelet/cm/cpumanager/state"
@@ -28,7 +28,8 @@ import (
)
type fakeManager struct {
- state state.State
+ policy Policy
+ state state.State
}
func (m *fakeManager) Start(activePods ActivePodsFunc, sourcesReady config.SourcesReady, podStatusProvider status.PodStatusProvider, containerRuntime runtimeService, initialContainers containermap.ContainerMap) error {
@@ -70,6 +71,10 @@ func (m *fakeManager) State() state.Reader {
return m.state
}
+func (m *fakeManager) GetCPUPolicy() string {
+ return m.policy.Name()
+}
+
func (m *fakeManager) GetCPUs(podUID, containerName string) cpuset.CPUSet {
klog.InfoS("GetCPUs", "podUID", podUID, "containerName", containerName)
return cpuset.CPUSet{}
@@ -83,6 +88,7 @@ func (m *fakeManager) GetAllocatableCPUs() cpuset.CPUSet {
// NewFakeManager creates empty/fake cpu manager
func NewFakeManager() Manager {
return &fakeManager{
- state: state.NewMemoryState(),
+ policy: &nonePolicy{},
+ state: state.NewMemoryState(),
}
}
diff --git a/pkg/kubelet/cm/helpers_linux.go b/pkg/kubelet/cm/helpers_linux.go
index 33b14e31..a6e5326b 100644
--- a/pkg/kubelet/cm/helpers_linux.go
+++ b/pkg/kubelet/cm/helpers_linux.go
@@ -25,7 +25,7 @@ import (
libcontainercgroups "github.com/opencontainers/runc/libcontainer/cgroups"
- "k8s.io/api/core/v1"
+ v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/types"
utilfeature "k8s.io/apiserver/pkg/util/feature"
"k8s.io/kubernetes/pkg/api/v1/resource"
@@ -167,6 +167,16 @@ func ResourceConfigForPod(pod *v1.Pod, enforceCPULimits bool, cpuPeriod uint64,
// build the result
result := &ResourceConfig{}
if qosClass == v1.PodQOSGuaranteed {
+ // Disable CFS CPU quota to avoid performance degradation due to
+ // Linux kernel CFS throttle implementation.
+ // NOTE: 4.18 kernel attempts to solve CFS throttling problem,
+ // but there are reports that it is not completely effective.
+ // This will configure cgroup CFS parameters at pod level:
+ // /sys/fs/cgroup/cpu/k8s-infra/kubepods/<pod>/cpu.cfs_quota_us
+ // /sys/fs/cgroup/cpu/k8s-infra/kubepods/<pod>/cpu.cfs_period_us
+ cpuQuota = int64(-1)
+ cpuPeriod = uint64(100000)
+
result.CpuShares = &cpuShares
result.CpuQuota = &cpuQuota
result.CpuPeriod = &cpuPeriod
diff --git a/pkg/kubelet/cm/helpers_linux_test.go b/pkg/kubelet/cm/helpers_linux_test.go
index bdd01ea1..b907f575 100644
--- a/pkg/kubelet/cm/helpers_linux_test.go
+++ b/pkg/kubelet/cm/helpers_linux_test.go
@@ -1,3 +1,4 @@
+//go:build linux
// +build linux
/*
@@ -24,7 +25,7 @@ import (
"testing"
"time"
- "k8s.io/api/core/v1"
+ v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
utilfeature "k8s.io/apiserver/pkg/util/feature"
featuregatetesting "k8s.io/component-base/featuregate/testing"
@@ -63,8 +64,9 @@ func TestResourceConfigForPod(t *testing.T) {
burstablePartialShares := MilliCPUToShares(200)
burstableQuota := MilliCPUToQuota(200, int64(defaultQuotaPeriod))
guaranteedShares := MilliCPUToShares(100)
- guaranteedQuota := MilliCPUToQuota(100, int64(defaultQuotaPeriod))
- guaranteedTunedQuota := MilliCPUToQuota(100, int64(tunedQuotaPeriod))
+ guaranteedQuotaPeriod := uint64(100000)
+ guaranteedQuota := int64(-1)
+ guaranteedTunedQuota := int64(-1)
memoryQuantity = resource.MustParse("100Mi")
cpuNoLimit := int64(-1)
guaranteedMemory := memoryQuantity.Value()
@@ -203,8 +205,8 @@ func TestResourceConfigForPod(t *testing.T) {
},
},
enforceCPULimits: true,
- quotaPeriod: defaultQuotaPeriod,
- expected: &ResourceConfig{CpuShares: &guaranteedShares, CpuQuota: &guaranteedQuota, CpuPeriod: &defaultQuotaPeriod, Memory: &guaranteedMemory},
+ quotaPeriod: guaranteedQuotaPeriod,
+ expected: &ResourceConfig{CpuShares: &guaranteedShares, CpuQuota: &guaranteedQuota, CpuPeriod: &guaranteedQuotaPeriod, Memory: &guaranteedMemory},
},
"guaranteed-no-cpu-enforcement": {
pod: &v1.Pod{
@@ -217,8 +219,8 @@ func TestResourceConfigForPod(t *testing.T) {
},
},
enforceCPULimits: false,
- quotaPeriod: defaultQuotaPeriod,
- expected: &ResourceConfig{CpuShares: &guaranteedShares, CpuQuota: &cpuNoLimit, CpuPeriod: &defaultQuotaPeriod, Memory: &guaranteedMemory},
+ quotaPeriod: guaranteedQuotaPeriod,
+ expected: &ResourceConfig{CpuShares: &guaranteedShares, CpuQuota: &cpuNoLimit, CpuPeriod: &guaranteedQuotaPeriod, Memory: &guaranteedMemory},
},
"guaranteed-with-tuned-quota": {
pod: &v1.Pod{
@@ -231,8 +233,8 @@ func TestResourceConfigForPod(t *testing.T) {
},
},
enforceCPULimits: true,
- quotaPeriod: tunedQuotaPeriod,
- expected: &ResourceConfig{CpuShares: &guaranteedShares, CpuQuota: &guaranteedTunedQuota, CpuPeriod: &tunedQuotaPeriod, Memory: &guaranteedMemory},
+ quotaPeriod: guaranteedQuotaPeriod,
+ expected: &ResourceConfig{CpuShares: &guaranteedShares, CpuQuota: &guaranteedTunedQuota, CpuPeriod: &guaranteedQuotaPeriod, Memory: &guaranteedMemory},
},
"guaranteed-no-cpu-enforcement-with-tuned-quota": {
pod: &v1.Pod{
@@ -245,8 +247,8 @@ func TestResourceConfigForPod(t *testing.T) {
},
},
enforceCPULimits: false,
- quotaPeriod: tunedQuotaPeriod,
- expected: &ResourceConfig{CpuShares: &guaranteedShares, CpuQuota: &cpuNoLimit, CpuPeriod: &tunedQuotaPeriod, Memory: &guaranteedMemory},
+ quotaPeriod: guaranteedQuotaPeriod,
+ expected: &ResourceConfig{CpuShares: &guaranteedShares, CpuQuota: &cpuNoLimit, CpuPeriod: &guaranteedQuotaPeriod, Memory: &guaranteedMemory},
},
}
@@ -283,8 +285,9 @@ func TestResourceConfigForPodWithCustomCPUCFSQuotaPeriod(t *testing.T) {
burstablePartialShares := MilliCPUToShares(200)
burstableQuota := MilliCPUToQuota(200, int64(defaultQuotaPeriod))
guaranteedShares := MilliCPUToShares(100)
- guaranteedQuota := MilliCPUToQuota(100, int64(defaultQuotaPeriod))
- guaranteedTunedQuota := MilliCPUToQuota(100, int64(tunedQuotaPeriod))
+ guaranteedQuotaPeriod := uint64(100000)
+ guaranteedQuota := int64(-1)
+ guaranteedTunedQuota := int64(-1)
memoryQuantity = resource.MustParse("100Mi")
cpuNoLimit := int64(-1)
guaranteedMemory := memoryQuantity.Value()
@@ -423,8 +426,8 @@ func TestResourceConfigForPodWithCustomCPUCFSQuotaPeriod(t *testing.T) {
},
},
enforceCPULimits: true,
- quotaPeriod: defaultQuotaPeriod,
- expected: &ResourceConfig{CpuShares: &guaranteedShares, CpuQuota: &guaranteedQuota, CpuPeriod: &defaultQuotaPeriod, Memory: &guaranteedMemory},
+ quotaPeriod: guaranteedQuotaPeriod,
+ expected: &ResourceConfig{CpuShares: &guaranteedShares, CpuQuota: &guaranteedQuota, CpuPeriod: &guaranteedQuotaPeriod, Memory: &guaranteedMemory},
},
"guaranteed-no-cpu-enforcement": {
pod: &v1.Pod{
@@ -437,8 +440,8 @@ func TestResourceConfigForPodWithCustomCPUCFSQuotaPeriod(t *testing.T) {
},
},
enforceCPULimits: false,
- quotaPeriod: defaultQuotaPeriod,
- expected: &ResourceConfig{CpuShares: &guaranteedShares, CpuQuota: &cpuNoLimit, CpuPeriod: &defaultQuotaPeriod, Memory: &guaranteedMemory},
+ quotaPeriod: guaranteedQuotaPeriod,
+ expected: &ResourceConfig{CpuShares: &guaranteedShares, CpuQuota: &cpuNoLimit, CpuPeriod: &guaranteedQuotaPeriod, Memory: &guaranteedMemory},
},
"guaranteed-with-tuned-quota": {
pod: &v1.Pod{
@@ -451,8 +454,8 @@ func TestResourceConfigForPodWithCustomCPUCFSQuotaPeriod(t *testing.T) {
},
},
enforceCPULimits: true,
- quotaPeriod: tunedQuotaPeriod,
- expected: &ResourceConfig{CpuShares: &guaranteedShares, CpuQuota: &guaranteedTunedQuota, CpuPeriod: &tunedQuotaPeriod, Memory: &guaranteedMemory},
+ quotaPeriod: guaranteedQuotaPeriod,
+ expected: &ResourceConfig{CpuShares: &guaranteedShares, CpuQuota: &guaranteedTunedQuota, CpuPeriod: &guaranteedQuotaPeriod, Memory: &guaranteedMemory},
},
"guaranteed-no-cpu-enforcement-with-tuned-quota": {
pod: &v1.Pod{
@@ -465,8 +468,8 @@ func TestResourceConfigForPodWithCustomCPUCFSQuotaPeriod(t *testing.T) {
},
},
enforceCPULimits: false,
- quotaPeriod: tunedQuotaPeriod,
- expected: &ResourceConfig{CpuShares: &guaranteedShares, CpuQuota: &cpuNoLimit, CpuPeriod: &tunedQuotaPeriod, Memory: &guaranteedMemory},
+ quotaPeriod: guaranteedQuotaPeriod,
+ expected: &ResourceConfig{CpuShares: &guaranteedShares, CpuQuota: &cpuNoLimit, CpuPeriod: &guaranteedQuotaPeriod, Memory: &guaranteedMemory},
},
}
diff --git a/pkg/kubelet/cm/internal_container_lifecycle_linux.go b/pkg/kubelet/cm/internal_container_lifecycle_linux.go
index 9cf41620..2e15d9ba 100644
--- a/pkg/kubelet/cm/internal_container_lifecycle_linux.go
+++ b/pkg/kubelet/cm/internal_container_lifecycle_linux.go
@@ -1,3 +1,4 @@
+//go:build linux
// +build linux
/*
@@ -22,8 +23,9 @@ import (
"strconv"
"strings"
- "k8s.io/api/core/v1"
+ v1 "k8s.io/api/core/v1"
runtimeapi "k8s.io/cri-api/pkg/apis/runtime/v1alpha2"
+ v1qos "k8s.io/kubernetes/pkg/apis/core/v1/helper/qos"
)
func (i *internalContainerLifecycleImpl) PreCreateContainer(pod *v1.Pod, container *v1.Container, containerConfig *runtimeapi.ContainerConfig) error {
@@ -33,7 +35,13 @@ func (i *internalContainerLifecycleImpl) PreCreateContainer(pod *v1.Pod, contain
containerConfig.Linux.Resources.CpusetCpus = allocatedCPUs.String()
}
}
-
+ // Disable cgroup CFS throttle at the container level.
+ // /sys/fs/cgroup/cpu/k8s-infra/kubepods/<pod>/<container>/cpu.cfs_quota_us
+ // /sys/fs/cgroup/cpu/k8s-infra/kubepods/<pod>/<container>/cpu.cfs_period_us
+ if i.cpuManager.GetCPUPolicy() == "static" && v1qos.GetPodQOS(pod) == v1.PodQOSGuaranteed {
+ containerConfig.Linux.Resources.CpuPeriod = int64(100000)
+ containerConfig.Linux.Resources.CpuQuota = int64(-1)
+ }
if i.memoryManager != nil {
numaNodes := i.memoryManager.GetMemoryNUMANodes(pod, container)
if numaNodes.Len() > 0 {
--
2.17.1

160
kubernetes/kubernetes-1.22.5/centos/files/kubelet-cpumanager-infrastructure-pods-use-system-re.patch Normal file
View File

@ -0,0 +1,160 @@
From 66f4a61ce77624dcc0b520e01fccacec61dfea37 Mon Sep 17 00:00:00 2001
From: Jim Gauld <james.gauld@windriver.com>
Date: Tue, 7 Sep 2021 14:21:03 -0400
Subject: [PATCH 3/7] kubelet cpumanager infrastructure pods use system
reserved CPUs
This assigns system infrastructure pods to the "reserved" cpuset
to isolate them from the shared pool of CPUs.
Infrastructure pods include any pods that belong to the kube-system,
armada, cert-manager, vault, platform-deployment-manager, portieris,
notification or flux-helm namespaces.
The implementation is a bit simplistic, it is assumed that the
"reserved" cpuset is large enough to handle all infrastructure pods
CPU allocations.
This also prevents infrastucture pods from using Guaranteed resources.
Signed-off-by: Daniel Safta <daniel.safta@windriver.com>
---
pkg/kubelet/cm/cpumanager/policy_static.go | 52 ++++++++++++++++---
.../cm/cpumanager/policy_static_test.go | 19 ++++++-
2 files changed, 63 insertions(+), 8 deletions(-)
diff --git a/pkg/kubelet/cm/cpumanager/policy_static.go b/pkg/kubelet/cm/cpumanager/policy_static.go
index 89625fc6..492457b1 100644
--- a/pkg/kubelet/cm/cpumanager/policy_static.go
+++ b/pkg/kubelet/cm/cpumanager/policy_static.go
@@ -53,6 +53,11 @@ func (e SMTAlignmentError) Type() string {
return ErrorSMTAlignment
}
+// Define namespaces used by platform infrastructure pods
+var infraNamespaces = [...]string{
+ "kube-system", "armada", "cert-manager", "platform-deployment-manager", "portieris", "vault", "notification", "flux-helm",
+}
+
// staticPolicy is a CPU manager policy that does not change CPU
// assignments for exclusively pinned guaranteed containers after the main
// container process starts.
@@ -141,12 +146,12 @@ func NewStaticPolicy(topology *topology.CPUTopology, numReservedCPUs int, reserv
klog.InfoS("Reserved CPUs not available for exclusive assignment", "reservedSize", reserved.Size(), "reserved", reserved)
return &staticPolicy{
- topology: topology,
- reserved: reserved,
+ topology: topology,
+ reserved: reserved,
excludeReserved: excludeReserved,
- affinity: affinity,
- cpusToReuse: make(map[string]cpuset.CPUSet),
- options: opts,
+ affinity: affinity,
+ cpusToReuse: make(map[string]cpuset.CPUSet),
+ options: opts,
}, nil
}
@@ -191,8 +196,8 @@ func (p *staticPolicy) validateState(s state.State) error {
// - user tampered with file
if !p.excludeReserved {
if !p.reserved.Intersection(tmpDefaultCPUset).Equals(p.reserved) {
- return fmt.Errorf("not all reserved cpus: \"%s\" are present in defaultCpuSet: \"%s\"",
- p.reserved.String(), tmpDefaultCPUset.String())
+ return fmt.Errorf("not all reserved cpus: \"%s\" are present in defaultCpuSet: \"%s\"",
+ p.reserved.String(), tmpDefaultCPUset.String())
}
}
// 2. Check if state for static policy is consistent
@@ -262,6 +267,25 @@ func (p *staticPolicy) updateCPUsToReuse(pod *v1.Pod, container *v1.Container, c
}
func (p *staticPolicy) Allocate(s state.State, pod *v1.Pod, container *v1.Container) error {
+ // Process infra pods before guaranteed pods
+ if isKubeInfra(pod) {
+ // Container belongs in reserved pool.
+ // We don't want to fall through to the p.guaranteedCPUs() clause below so return either nil or error.
+ if _, ok := s.GetCPUSet(string(pod.UID), container.Name); ok {
+ klog.Infof("[cpumanager] static policy: reserved container already present in state, skipping (namespace: %s, pod UID: %s, pod: %s, container: %s)", pod.Namespace, string(pod.UID), pod.Name, container.Name)
+ return nil
+ }
+
+ cpuset := p.reserved
+ if cpuset.IsEmpty() {
+ // If this happens then someone messed up.
+ return fmt.Errorf("[cpumanager] static policy: reserved container unable to allocate cpus (namespace: %s, pod UID: %s, pod: %s, container: %s); cpuset=%v, reserved:%v", pod.Namespace, string(pod.UID), pod.Name, container.Name, cpuset, p.reserved)
+ }
+ s.SetCPUSet(string(pod.UID), container.Name, cpuset)
+ klog.Infof("[cpumanager] static policy: reserved: AddContainer (namespace: %s, pod UID: %s, pod: %s, container: %s); cpuset=%v", pod.Namespace, string(pod.UID), pod.Name, container.Name, cpuset)
+ return nil
+ }
+
if numCPUs := p.guaranteedCPUs(pod, container); numCPUs != 0 {
klog.InfoS("Static policy: Allocate", "pod", klog.KObj(pod), "containerName", container.Name)
// container belongs in an exclusively allocated pool
@@ -366,6 +390,10 @@ func (p *staticPolicy) guaranteedCPUs(pod *v1.Pod, container *v1.Container) int
if cpuQuantity.Value()*1000 != cpuQuantity.MilliValue() {
return 0
}
+ // Infrastructure pods use reserved CPUs even if they're in the Guaranteed QoS class
+ if isKubeInfra(pod) {
+ return 0
+ }
// Safe downcast to do for all systems with < 2.1 billion CPUs.
// Per the language spec, `int` is guaranteed to be at least 32 bits wide.
// https://golang.org/ref/spec#Numeric_types
@@ -568,3 +596,13 @@ func (p *staticPolicy) generateCPUTopologyHints(availableCPUs cpuset.CPUSet, reu
return hints
}
+
+// check if a given pod is in a platform infrastructure namespace
+func isKubeInfra(pod *v1.Pod) bool {
+ for _, namespace := range infraNamespaces {
+ if namespace == pod.Namespace {
+ return true
+ }
+ }
+ return false
+}
diff --git a/pkg/kubelet/cm/cpumanager/policy_static_test.go b/pkg/kubelet/cm/cpumanager/policy_static_test.go
index 80bd04a1..34c5a23c 100644
--- a/pkg/kubelet/cm/cpumanager/policy_static_test.go
+++ b/pkg/kubelet/cm/cpumanager/policy_static_test.go
@@ -830,7 +830,8 @@ func TestStaticPolicyStartWithResvList(t *testing.T) {
}
func TestStaticPolicyAddWithResvList(t *testing.T) {
-
+ infraPod := makePod("fakePod", "fakeContainer2", "200m", "200m")
+ infraPod.Namespace = "kube-system"
testCases := []staticPolicyTestWithResvList{
{
description: "GuPodSingleCore, SingleSocketHT, ExpectError",
@@ -872,6 +873,22 @@ func TestStaticPolicyAddWithResvList(t *testing.T) {
expCPUAlloc: true,
expCSet: cpuset.NewCPUSet(4, 5),
},
+ {
+ description: "InfraPod, SingleSocketHT, ExpectAllocReserved",
+ topo: topoSingleSocketHT,
+ numReservedCPUs: 2,
+ reserved: cpuset.NewCPUSet(0, 1),
+ stAssignments: state.ContainerCPUAssignments{
+ "fakePod": map[string]cpuset.CPUSet{
+ "fakeContainer100": cpuset.NewCPUSet(2, 3, 6, 7),
+ },
+ },
+ stDefaultCPUSet: cpuset.NewCPUSet(4, 5),
+ pod: infraPod,
+ expErr: nil,
+ expCPUAlloc: true,
+ expCSet: cpuset.NewCPUSet(0, 1),
+ },
}
testExcl := true
--
2.17.1

564
kubernetes/kubernetes-1.22.5/centos/files/kubelet-cpumanager-introduce-concept-of-isolated-CPU.patch Normal file
View File

@ -0,0 +1,564 @@
From f3db147d0a40a6f336e9fa6d737e36366f9adf87 Mon Sep 17 00:00:00 2001
From: Daniel Safta <daniel.safta@windriver.com>
Date: Thu, 13 Jan 2022 11:08:48 +0200
Subject: [PATCH 4/7] kubelet cpumanager introduce concept of isolated CPUs
This introduces the concept of "isolated CPUs", which are CPUs that
have been isolated at the kernel level via the "isolcpus" kernel boot
parameter.
When starting the kubelet process, two separate sets of reserved CPUs
may be specified. With this change CPUs reserved via
'--system-reserved=cpu' will be used for infrastructure pods while the
isolated CPUs should be reserved via '--kube-reserved=cpu' to cause
kubelet to skip over them for "normal" CPU resource tracking. The
kubelet code will double-check that the specified isolated CPUs match
what the kernel exposes in "/sys/devices/system/cpu/isolated".
A plugin (outside the scope of this commit) will expose the isolated
CPUs to kubelet via the device plugin API.
If a pod specifies some number of "isolcpus" resources, the device
manager will allocate them. In this code we check whether such
resources have been allocated, and if so we set the container cpuset to
the isolated CPUs. This does mean that it really only makes sense to
specify "isolcpus" resources for best-effort or burstable pods, not for
guaranteed ones since that would throw off the accounting code. In
order to ensure the accounting still works as designed, if "isolcpus"
are specified for guaranteed pods, the affinity will be set to the
non-isolated CPUs.
This patch was refactored in 1.21.3 due to upstream API change
node: podresources: make GetDevices() consistent
(commit ad68f9588c72d6477b5a290c548a9031063ac659).
The routine podIsolCPUs() was refactored in 1.21.3 since the API
p.deviceManager.GetDevices() is returning multiple devices with
a device per cpu. The resultant cpuset needs to be the aggregate.
The routine NewStaticPolicy was refactored in 1.22.5, adding a new argument
in its signature: cpuPolicyOptions map[string]string. This change is implies
shifting the new arguments(deviceManager, excludeReserved) with one position
to the right.
Signed-off-by: Daniel Safta <daniel.safta@windriver.com>
Co-authored-by: Jim Gauld <james.gauld@windriver.com>
Co-authored-by: Chris Friesen <chris.friesen@windriver.com>
---
pkg/kubelet/cm/container_manager_linux.go | 2 +
pkg/kubelet/cm/cpumanager/cpu_manager.go | 35 +++++++-
pkg/kubelet/cm/cpumanager/cpu_manager_test.go | 14 +++-
pkg/kubelet/cm/cpumanager/policy_static.go | 82 +++++++++++++++++--
.../cm/cpumanager/policy_static_test.go | 50 ++++++++---
5 files changed, 164 insertions(+), 19 deletions(-)
diff --git a/pkg/kubelet/cm/container_manager_linux.go b/pkg/kubelet/cm/container_manager_linux.go
index d7aa6270..de68ad98 100644
--- a/pkg/kubelet/cm/container_manager_linux.go
+++ b/pkg/kubelet/cm/container_manager_linux.go
@@ -1,3 +1,4 @@
+//go:build linux
// +build linux
/*
@@ -339,6 +340,7 @@ func NewContainerManager(mountUtil mount.Interface, cadvisorInterface cadvisor.I
cm.GetNodeAllocatableReservation(),
nodeConfig.KubeletRootDir,
cm.topologyManager,
+ cm.deviceManager,
)
if err != nil {
klog.ErrorS(err, "Failed to initialize cpu manager")
diff --git a/pkg/kubelet/cm/cpumanager/cpu_manager.go b/pkg/kubelet/cm/cpumanager/cpu_manager.go
index fba0bfd1..1d0ff0e4 100644
--- a/pkg/kubelet/cm/cpumanager/cpu_manager.go
+++ b/pkg/kubelet/cm/cpumanager/cpu_manager.go
@@ -18,7 +18,9 @@ package cpumanager
import (
"fmt"
+ "io/ioutil"
"math"
+ "strings"
"sync"
"time"
@@ -32,6 +34,7 @@ import (
"k8s.io/kubernetes/pkg/kubelet/cm/cpumanager/state"
"k8s.io/kubernetes/pkg/kubelet/cm/cpumanager/topology"
"k8s.io/kubernetes/pkg/kubelet/cm/cpuset"
+ "k8s.io/kubernetes/pkg/kubelet/cm/devicemanager"
"k8s.io/kubernetes/pkg/kubelet/cm/topologymanager"
"k8s.io/kubernetes/pkg/kubelet/config"
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
@@ -50,6 +53,25 @@ type policyName string
// cpuManagerStateFileName is the file name where cpu manager stores its state
const cpuManagerStateFileName = "cpu_manager_state"
+// get the system-level isolated CPUs
+func getIsolcpus() cpuset.CPUSet {
+ dat, err := ioutil.ReadFile("/sys/devices/system/cpu/isolated")
+ if err != nil {
+ klog.Errorf("[cpumanager] unable to read sysfs isolcpus subdir")
+ return cpuset.NewCPUSet()
+ }
+
+ // The isolated cpus string ends in a newline
+ cpustring := strings.TrimSuffix(string(dat), "\n")
+ cset, err := cpuset.Parse(cpustring)
+ if err != nil {
+ klog.Errorf("[cpumanager] unable to parse sysfs isolcpus string to cpuset")
+ return cpuset.NewCPUSet()
+ }
+
+ return cset
+}
+
// Manager interface provides methods for Kubelet to manage pod cpus.
type Manager interface {
// Start is called during Kubelet initialization.
@@ -149,7 +171,8 @@ func (s *sourcesReadyStub) AddSource(source string) {}
func (s *sourcesReadyStub) AllReady() bool { return true }
// NewManager creates new cpu manager based on provided policy
-func NewManager(cpuPolicyName string, cpuPolicyOptions map[string]string, reconcilePeriod time.Duration, machineInfo *cadvisorapi.MachineInfo, specificCPUs cpuset.CPUSet, nodeAllocatableReservation v1.ResourceList, stateFileDirectory string, affinity topologymanager.Store) (Manager, error) {
+func NewManager(cpuPolicyName string, cpuPolicyOptions map[string]string, reconcilePeriod time.Duration, machineInfo *cadvisorapi.MachineInfo, specificCPUs cpuset.CPUSet, nodeAllocatableReservation v1.ResourceList, stateFileDirectory string, affinity topologymanager.Store, deviceManager devicemanager.Manager) (Manager, error) {
+
var topo *topology.CPUTopology
var policy Policy
var err error
@@ -190,7 +213,15 @@ func NewManager(cpuPolicyName string, cpuPolicyOptions map[string]string, reconc
// NOTE: Set excludeReserved unconditionally to exclude reserved CPUs from default cpuset.
// This variable is primarily to make testing easier.
excludeReserved := true
- policy, err = NewStaticPolicy(topo, numReservedCPUs, specificCPUs, affinity, cpuPolicyOptions, excludeReserved)
+
+ // isolCPUs is the set of kernel-isolated CPUs. They should be a subset of specificCPUs or
+ // of the CPUs that NewStaticPolicy() will pick if numReservedCPUs is set. It's only in the
+ // argument list here for ease of testing, it's really internal to the policy.
+ isolCPUs := getIsolcpus()
+ policy, err = NewStaticPolicy(topo, numReservedCPUs, specificCPUs, isolCPUs, affinity, cpuPolicyOptions, deviceManager, excludeReserved)
+ if err != nil {
+ return nil, fmt.Errorf("new static policy error: %v", err)
+ }
if err != nil {
return nil, fmt.Errorf("new static policy error: %w", err)
diff --git a/pkg/kubelet/cm/cpumanager/cpu_manager_test.go b/pkg/kubelet/cm/cpumanager/cpu_manager_test.go
index bbfc70b8..39532b1c 100644
--- a/pkg/kubelet/cm/cpumanager/cpu_manager_test.go
+++ b/pkg/kubelet/cm/cpumanager/cpu_manager_test.go
@@ -37,6 +37,7 @@ import (
"k8s.io/kubernetes/pkg/kubelet/cm/cpumanager/state"
"k8s.io/kubernetes/pkg/kubelet/cm/cpumanager/topology"
"k8s.io/kubernetes/pkg/kubelet/cm/cpuset"
+ "k8s.io/kubernetes/pkg/kubelet/cm/devicemanager"
"k8s.io/kubernetes/pkg/kubelet/cm/topologymanager"
)
@@ -215,6 +216,7 @@ func makeMultiContainerPod(initCPUs, appCPUs []struct{ request, limit string })
}
func TestCPUManagerAdd(t *testing.T) {
+ testDM, _ := devicemanager.NewManagerStub()
testExcl := false
testPolicy, _ := NewStaticPolicy(
&topology.CPUTopology{
@@ -230,8 +232,10 @@ func TestCPUManagerAdd(t *testing.T) {
},
0,
cpuset.NewCPUSet(),
+ cpuset.NewCPUSet(),
topologymanager.NewFakeManager(),
nil,
+ testDM,
testExcl)
testCases := []struct {
description string
@@ -482,8 +486,9 @@ func TestCPUManagerAddWithInitContainers(t *testing.T) {
}
testExcl := false
+ testDM, _ := devicemanager.NewManagerStub()
for _, testCase := range testCases {
- policy, _ := NewStaticPolicy(testCase.topo, testCase.numReservedCPUs, cpuset.NewCPUSet(), topologymanager.NewFakeManager(), nil, testExcl)
+ policy, _ := NewStaticPolicy(testCase.topo, testCase.numReservedCPUs, cpuset.NewCPUSet(), cpuset.NewCPUSet(), topologymanager.NewFakeManager(), nil, testDM, testExcl)
mockState := &mockState{
assignments: testCase.stAssignments,
@@ -638,7 +643,9 @@ func TestCPUManagerGenerate(t *testing.T) {
}
defer os.RemoveAll(sDir)
- mgr, err := NewManager(testCase.cpuPolicyName, nil, 5*time.Second, machineInfo, cpuset.NewCPUSet(), testCase.nodeAllocatableReservation, sDir, topologymanager.NewFakeManager())
+ testDM, err := devicemanager.NewManagerStub()
+ mgr, err := NewManager(testCase.cpuPolicyName, nil, 5*time.Second, machineInfo, cpuset.NewCPUSet(), testCase.nodeAllocatableReservation, sDir, topologymanager.NewFakeManager(), testDM)
+
if testCase.expectedError != nil {
if !strings.Contains(err.Error(), testCase.expectedError.Error()) {
t.Errorf("Unexpected error message. Have: %s wants %s", err.Error(), testCase.expectedError.Error())
@@ -995,6 +1002,7 @@ func TestReconcileState(t *testing.T) {
// the following tests are with --reserved-cpus configured
func TestCPUManagerAddWithResvList(t *testing.T) {
testExcl := false
+ testDM, _ := devicemanager.NewManagerStub()
testPolicy, _ := NewStaticPolicy(
&topology.CPUTopology{
NumCPUs: 4,
@@ -1009,8 +1017,10 @@ func TestCPUManagerAddWithResvList(t *testing.T) {
},
1,
cpuset.NewCPUSet(0),
+ cpuset.NewCPUSet(),
topologymanager.NewFakeManager(),
nil,
+ testDM,
testExcl)
testCases := []struct {
description string
diff --git a/pkg/kubelet/cm/cpumanager/policy_static.go b/pkg/kubelet/cm/cpumanager/policy_static.go
index 953f41e9..ccac9f08 100644
--- a/pkg/kubelet/cm/cpumanager/policy_static.go
+++ b/pkg/kubelet/cm/cpumanager/policy_static.go
@@ -18,6 +18,7 @@ package cpumanager
import (
"fmt"
+ "strconv"
v1 "k8s.io/api/core/v1"
"k8s.io/klog/v2"
@@ -25,6 +26,7 @@ import (
"k8s.io/kubernetes/pkg/kubelet/cm/cpumanager/state"
"k8s.io/kubernetes/pkg/kubelet/cm/cpumanager/topology"
"k8s.io/kubernetes/pkg/kubelet/cm/cpuset"
+ "k8s.io/kubernetes/pkg/kubelet/cm/devicemanager"
"k8s.io/kubernetes/pkg/kubelet/cm/topologymanager"
"k8s.io/kubernetes/pkg/kubelet/cm/topologymanager/bitmask"
)
@@ -101,6 +103,10 @@ type staticPolicy struct {
topology *topology.CPUTopology
// set of CPUs that is not available for exclusive assignment
reserved cpuset.CPUSet
+ // subset of reserved CPUs with isolcpus attribute
+ isolcpus cpuset.CPUSet
+ // parent containerManager, used to get device list
+ deviceManager devicemanager.Manager
// If true, default CPUSet should exclude reserved CPUs
excludeReserved bool
// topology manager reference to get container Topology affinity
@@ -117,7 +123,8 @@ var _ Policy = &staticPolicy{}
// NewStaticPolicy returns a CPU manager policy that does not change CPU
// assignments for exclusively pinned guaranteed containers after the main
// container process starts.
-func NewStaticPolicy(topology *topology.CPUTopology, numReservedCPUs int, reservedCPUs cpuset.CPUSet, affinity topologymanager.Store, cpuPolicyOptions map[string]string, excludeReserved bool) (Policy, error) {
+func NewStaticPolicy(topology *topology.CPUTopology, numReservedCPUs int, reservedCPUs cpuset.CPUSet, isolCPUs cpuset.CPUSet, affinity topologymanager.Store, cpuPolicyOptions map[string]string, deviceManager devicemanager.Manager, excludeReserved bool) (Policy, error) {
+
opts, err := NewStaticPolicyOptions(cpuPolicyOptions)
if err != nil {
return nil, err
@@ -144,10 +151,17 @@ func NewStaticPolicy(topology *topology.CPUTopology, numReservedCPUs int, reserv
}
klog.InfoS("Reserved CPUs not available for exclusive assignment", "reservedSize", reserved.Size(), "reserved", reserved)
+ if !isolCPUs.IsSubsetOf(reserved) {
+ klog.Errorf("[cpumanager] isolCPUs %v is not a subset of reserved %v", isolCPUs, reserved)
+ reserved = reserved.Union(isolCPUs)
+ klog.Warningf("[cpumanager] mismatch isolCPUs %v, force reserved %v", isolCPUs, reserved)
+ }
return &staticPolicy{
topology: topology,
reserved: reserved,
+ isolcpus: isolCPUs,
+ deviceManager: deviceManager,
excludeReserved: excludeReserved,
affinity: affinity,
cpusToReuse: make(map[string]cpuset.CPUSet),
@@ -185,8 +199,9 @@ func (p *staticPolicy) validateState(s state.State) error {
} else {
s.SetDefaultCPUSet(allCPUs)
}
- klog.Infof("[cpumanager] static policy: CPUSet: allCPUs:%v, reserved:%v, default:%v\n",
- allCPUs, p.reserved, s.GetDefaultCPUSet())
+ klog.Infof("[cpumanager] static policy: CPUSet: allCPUs:%v, reserved:%v, isolcpus:%v, default:%v\n",
+ allCPUs, p.reserved, p.isolcpus, s.GetDefaultCPUSet())
+
return nil
}
@@ -277,10 +292,11 @@ func (p *staticPolicy) Allocate(s state.State, pod *v1.Pod, container *v1.Contai
return nil
}
- cpuset := p.reserved
+ cpuset := p.reserved.Clone().Difference(p.isolcpus)
if cpuset.IsEmpty() {
// If this happens then someone messed up.
- return fmt.Errorf("[cpumanager] static policy: reserved container unable to allocate cpus (namespace: %s, pod UID: %s, pod: %s, container: %s); cpuset=%v, reserved:%v", pod.Namespace, string(pod.UID), pod.Name, container.Name, cpuset, p.reserved)
+ return fmt.Errorf("[cpumanager] static policy: reserved container unable to allocate cpus (namespace: %s, pod UID: %s, pod: %s, container: %s); cpuset=%v, reserved:%v, isolcpus:%v", pod.Namespace, string(pod.UID), pod.Name, container.Name, cpuset, p.reserved, p.isolcpus)
+
}
s.SetCPUSet(string(pod.UID), container.Name, cpuset)
klog.Infof("[cpumanager] static policy: reserved: AddContainer (namespace: %s, pod UID: %s, pod: %s, container: %s); cpuset=%v", pod.Namespace, string(pod.UID), pod.Name, container.Name, cpuset)
@@ -324,8 +340,34 @@ func (p *staticPolicy) Allocate(s state.State, pod *v1.Pod, container *v1.Contai
}
s.SetCPUSet(string(pod.UID), container.Name, cpuset)
p.updateCPUsToReuse(pod, container, cpuset)
+ klog.Infof("[cpumanager] guaranteed: AddContainer "+
+ "(namespace: %s, pod UID: %s, pod: %s, container: %s); numCPUS=%d, cpuset=%v",
+ pod.Namespace, string(pod.UID), pod.Name, container.Name, numCPUs, cpuset)
+ return nil
+ }
+ if isolcpus := p.podIsolCPUs(pod, container); isolcpus.Size() > 0 {
+ // container has requested isolated CPUs
+ if set, ok := s.GetCPUSet(string(pod.UID), container.Name); ok {
+ if set.Equals(isolcpus) {
+ klog.Infof("[cpumanager] isolcpus container already present in state, skipping (namespace: %s, pod UID: %s, pod: %s, container: %s)",
+ pod.Namespace, string(pod.UID), pod.Name, container.Name)
+ return nil
+ } else {
+ klog.Infof("[cpumanager] isolcpus container state has cpus %v, should be %v (namespace: %s, pod UID: %s, pod: %s, container: %s)",
+ isolcpus, set, pod.Namespace, string(pod.UID), pod.Name, container.Name)
+ }
+ }
+ // Note that we do not do anything about init containers here.
+ // It looks like devices are allocated per-pod based on effective requests/limits
+ // and extra devices from initContainers are not freed up when the regular containers start.
+ // TODO: confirm this is still true for 1.20
+ s.SetCPUSet(string(pod.UID), container.Name, isolcpus)
+ klog.Infof("[cpumanager] isolcpus: AddContainer (namespace: %s, pod UID: %s, pod: %s, container: %s); cpuset=%v",
+ pod.Namespace, string(pod.UID), pod.Name, container.Name, isolcpus)
+ return nil
}
+
// container belongs in the shared pool (nothing to do; use default cpuset)
return nil
}
@@ -607,3 +649,33 @@ func isKubeInfra(pod *v1.Pod) bool {
}
return false
}
+
+// get the isolated CPUs (if any) from the devices associated with a specific container
+func (p *staticPolicy) podIsolCPUs(pod *v1.Pod, container *v1.Container) cpuset.CPUSet {
+ // NOTE: This is required for TestStaticPolicyAdd() since makePod() does
+ // not create UID. We also need a way to properly stub devicemanager.
+ if len(string(pod.UID)) == 0 {
+ return cpuset.NewCPUSet()
+ }
+ resContDevices := p.deviceManager.GetDevices(string(pod.UID), container.Name)
+ cpuSet := cpuset.NewCPUSet()
+ for resourceName, resourceDevs := range resContDevices {
+ // this resource name needs to match the isolcpus device plugin
+ if resourceName == "windriver.com/isolcpus" {
+ for devID, _ := range resourceDevs {
+ cpuStrList := []string{devID}
+ if len(cpuStrList) > 0 {
+ // loop over the list of strings, convert each one to int, add to cpuset
+ for _, cpuStr := range cpuStrList {
+ cpu, err := strconv.Atoi(cpuStr)
+ if err != nil {
+ panic(err)
+ }
+ cpuSet = cpuSet.Union(cpuset.NewCPUSet(cpu))
+ }
+ }
+ }
+ }
+ }
+ return cpuSet
+}
diff --git a/pkg/kubelet/cm/cpumanager/policy_static_test.go b/pkg/kubelet/cm/cpumanager/policy_static_test.go
index 34c5a23c..a0eb451b 100644
--- a/pkg/kubelet/cm/cpumanager/policy_static_test.go
+++ b/pkg/kubelet/cm/cpumanager/policy_static_test.go
@@ -25,6 +25,7 @@ import (
"k8s.io/kubernetes/pkg/kubelet/cm/cpumanager/state"
"k8s.io/kubernetes/pkg/kubelet/cm/cpumanager/topology"
"k8s.io/kubernetes/pkg/kubelet/cm/cpuset"
+ "k8s.io/kubernetes/pkg/kubelet/cm/devicemanager"
"k8s.io/kubernetes/pkg/kubelet/cm/topologymanager"
"k8s.io/kubernetes/pkg/kubelet/cm/topologymanager/bitmask"
)
@@ -65,8 +66,9 @@ func (spt staticPolicyTest) PseudoClone() staticPolicyTest {
}
func TestStaticPolicyName(t *testing.T) {
+ testDM, _ := devicemanager.NewManagerStub()
testExcl := false
- policy, _ := NewStaticPolicy(topoSingleSocketHT, 1, cpuset.NewCPUSet(), topologymanager.NewFakeManager(), nil, testExcl)
+ policy, _ := NewStaticPolicy(topoSingleSocketHT, 1, cpuset.NewCPUSet(), cpuset.NewCPUSet(), topologymanager.NewFakeManager(), nil, testDM, testExcl)
policyName := policy.Name()
if policyName != "static" {
@@ -76,6 +78,7 @@ func TestStaticPolicyName(t *testing.T) {
}
func TestStaticPolicyStart(t *testing.T) {
+ testDM, _ := devicemanager.NewManagerStub()
testCases := []staticPolicyTest{
{
description: "non-corrupted state",
@@ -151,7 +154,7 @@ func TestStaticPolicyStart(t *testing.T) {
}
for _, testCase := range testCases {
t.Run(testCase.description, func(t *testing.T) {
- p, _ := NewStaticPolicy(testCase.topo, testCase.numReservedCPUs, cpuset.NewCPUSet(), topologymanager.NewFakeManager(), nil, testCase.excludeReserved)
+ p, _ := NewStaticPolicy(testCase.topo, testCase.numReservedCPUs, cpuset.NewCPUSet(), cpuset.NewCPUSet(), topologymanager.NewFakeManager(), nil, testDM, testCase.excludeReserved)
policy := p.(*staticPolicy)
st := &mockState{
@@ -199,7 +202,7 @@ func TestStaticPolicyAdd(t *testing.T) {
largeTopoCPUSet := largeTopoBuilder.Result()
largeTopoSock0CPUSet := largeTopoSock0Builder.Result()
largeTopoSock1CPUSet := largeTopoSock1Builder.Result()
-
+ testDM, _ := devicemanager.NewManagerStub()
// these are the cases which must behave the same regardless the policy options.
// So we will permutate the options to ensure this holds true.
optionsInsensitiveTestCases := []staticPolicyTest{
@@ -529,8 +532,9 @@ func TestStaticPolicyAdd(t *testing.T) {
}
func runStaticPolicyTestCase(t *testing.T, testCase staticPolicyTest) {
+ testDM, _ := devicemanager.NewManagerStub()
testExcl := false
- policy, _ := NewStaticPolicy(testCase.topo, testCase.numReservedCPUs, cpuset.NewCPUSet(), topologymanager.NewFakeManager(), testCase.options, testExcl)
+ policy, _ := NewStaticPolicy(testCase.topo, testCase.numReservedCPUs, cpuset.NewCPUSet(), cpuset.NewCPUSet(), topologymanager.NewFakeManager(), testCase.options, testDM, testExcl)
st := &mockState{
assignments: testCase.stAssignments,
@@ -573,6 +577,7 @@ func runStaticPolicyTestCase(t *testing.T, testCase staticPolicyTest) {
func TestStaticPolicyRemove(t *testing.T) {
excludeReserved := false
+ testDM, _ := devicemanager.NewManagerStub()
testCases := []staticPolicyTest{
{
description: "SingleSocketHT, DeAllocOneContainer",
@@ -631,7 +636,7 @@ func TestStaticPolicyRemove(t *testing.T) {
}
for _, testCase := range testCases {
- policy, _ := NewStaticPolicy(testCase.topo, testCase.numReservedCPUs, cpuset.NewCPUSet(), topologymanager.NewFakeManager(), nil, testCase.excludeReserved)
+ policy, _ := NewStaticPolicy(testCase.topo, testCase.numReservedCPUs, cpuset.NewCPUSet(), cpuset.NewCPUSet(), topologymanager.NewFakeManager(), nil, testDM, excludeReserved)
st := &mockState{
assignments: testCase.stAssignments,
@@ -654,6 +659,7 @@ func TestStaticPolicyRemove(t *testing.T) {
func TestTopologyAwareAllocateCPUs(t *testing.T) {
excludeReserved := false
+ testDM, _ := devicemanager.NewManagerStub()
testCases := []struct {
description string
topo *topology.CPUTopology
@@ -722,7 +728,8 @@ func TestTopologyAwareAllocateCPUs(t *testing.T) {
},
}
for _, tc := range testCases {
- p, _ := NewStaticPolicy(tc.topo, 0, cpuset.NewCPUSet(), topologymanager.NewFakeManager(), nil, excludeReserved)
+ p, _ := NewStaticPolicy(tc.topo, 0, cpuset.NewCPUSet(), cpuset.NewCPUSet(), topologymanager.NewFakeManager(), nil, testDM, excludeReserved)
+
policy := p.(*staticPolicy)
st := &mockState{
assignments: tc.stAssignments,
@@ -755,6 +762,7 @@ type staticPolicyTestWithResvList struct {
topo *topology.CPUTopology
numReservedCPUs int
reserved cpuset.CPUSet
+ isolcpus cpuset.CPUSet
stAssignments state.ContainerCPUAssignments
stDefaultCPUSet cpuset.CPUSet
pod *v1.Pod
@@ -765,6 +773,8 @@ type staticPolicyTestWithResvList struct {
}
func TestStaticPolicyStartWithResvList(t *testing.T) {
+ testDM, _ := devicemanager.NewManagerStub()
+ testExcl := false
testCases := []staticPolicyTestWithResvList{
{
description: "empty cpuset",
@@ -794,11 +804,9 @@ func TestStaticPolicyStartWithResvList(t *testing.T) {
expNewErr: fmt.Errorf("[cpumanager] unable to reserve the required amount of CPUs (size of 0-1 did not equal 1)"),
},
}
- testExcl := false
for _, testCase := range testCases {
t.Run(testCase.description, func(t *testing.T) {
- p, err := NewStaticPolicy(testCase.topo, testCase.numReservedCPUs, testCase.reserved, topologymanager.NewFakeManager(), nil, testExcl)
-
+ p, err := NewStaticPolicy(testCase.topo, testCase.numReservedCPUs, testCase.reserved, cpuset.NewCPUSet(), topologymanager.NewFakeManager(), nil, testDM, testExcl)
if !reflect.DeepEqual(err, testCase.expNewErr) {
t.Errorf("StaticPolicy Start() error (%v). expected error: %v but got: %v",
testCase.description, testCase.expNewErr, err)
@@ -838,6 +846,7 @@ func TestStaticPolicyAddWithResvList(t *testing.T) {
topo: topoSingleSocketHT,
numReservedCPUs: 1,
reserved: cpuset.NewCPUSet(0),
+ isolcpus: cpuset.NewCPUSet(),
stAssignments: state.ContainerCPUAssignments{},
stDefaultCPUSet: cpuset.NewCPUSet(1, 2, 3, 4, 5, 6, 7),
pod: makePod("fakePod", "fakeContainer2", "8000m", "8000m"),
@@ -850,6 +859,7 @@ func TestStaticPolicyAddWithResvList(t *testing.T) {
topo: topoSingleSocketHT,
numReservedCPUs: 2,
reserved: cpuset.NewCPUSet(0, 1),
+ isolcpus: cpuset.NewCPUSet(),
stAssignments: state.ContainerCPUAssignments{},
stDefaultCPUSet: cpuset.NewCPUSet(2, 3, 4, 5, 6, 7),
pod: makePod("fakePod", "fakeContainer2", "1000m", "1000m"),
@@ -862,6 +872,7 @@ func TestStaticPolicyAddWithResvList(t *testing.T) {
topo: topoSingleSocketHT,
numReservedCPUs: 2,
reserved: cpuset.NewCPUSet(0, 1),
+ isolcpus: cpuset.NewCPUSet(),
stAssignments: state.ContainerCPUAssignments{
"fakePod": map[string]cpuset.CPUSet{
"fakeContainer100": cpuset.NewCPUSet(2, 3, 6, 7),
@@ -878,6 +889,7 @@ func TestStaticPolicyAddWithResvList(t *testing.T) {
topo: topoSingleSocketHT,
numReservedCPUs: 2,
reserved: cpuset.NewCPUSet(0, 1),
+ isolcpus: cpuset.NewCPUSet(),
stAssignments: state.ContainerCPUAssignments{
"fakePod": map[string]cpuset.CPUSet{
"fakeContainer100": cpuset.NewCPUSet(2, 3, 6, 7),
@@ -889,11 +901,29 @@ func TestStaticPolicyAddWithResvList(t *testing.T) {
expCPUAlloc: true,
expCSet: cpuset.NewCPUSet(0, 1),
},
+ {
+ description: "InfraPod, SingleSocketHT, Isolcpus, ExpectAllocReserved",
+ topo: topoSingleSocketHT,
+ numReservedCPUs: 2,
+ reserved: cpuset.NewCPUSet(0, 1),
+ isolcpus: cpuset.NewCPUSet(1),
+ stAssignments: state.ContainerCPUAssignments{
+ "fakePod": map[string]cpuset.CPUSet{
+ "fakeContainer100": cpuset.NewCPUSet(2, 3, 6, 7),
+ },
+ },
+ stDefaultCPUSet: cpuset.NewCPUSet(4, 5),
+ pod: infraPod,
+ expErr: nil,
+ expCPUAlloc: true,
+ expCSet: cpuset.NewCPUSet(0),
+ },
}
testExcl := true
+ testDM, _ := devicemanager.NewManagerStub()
for _, testCase := range testCases {
- policy, _ := NewStaticPolicy(testCase.topo, testCase.numReservedCPUs, testCase.reserved, topologymanager.NewFakeManager(), nil, testExcl)
+ policy, _ := NewStaticPolicy(testCase.topo, testCase.numReservedCPUs, testCase.reserved, testCase.isolcpus, topologymanager.NewFakeManager(), nil, testDM, testExcl)
st := &mockState{
assignments: testCase.stAssignments,
--
2.17.1

319
kubernetes/kubernetes-1.22.5/centos/files/kubelet-cpumanager-keep-normal-containers-off-reserv.patch Normal file
View File

@ -0,0 +1,319 @@
From 196f2843fe4e6746ca2ba6f97211d9a54733781c Mon Sep 17 00:00:00 2001
From: Daniel Safta <daniel.safta@windriver.com>
Date: Wed, 12 Jan 2022 15:23:37 +0200
Subject: [PATCH 2/7] kubelet cpumanager keep normal containers off reserved
CPUs
When starting the kubelet process, two separate sets of reserved CPUs
may be specified. With this change CPUs reserved via '--system-reserved=cpu'
or '--kube-reserved=cpu' will be ignored by kubernetes itself. A small
tweak to the default CPU affinity ensures that "normal" Kubernetes
pods won't run on the reserved CPUs.
Signed-off-by: Daniel Safta <daniel.safta@windriver.com>
Co-authored-by: Jim Gauld <james.gauld@windriver.com>
---
pkg/kubelet/cm/cpumanager/cpu_manager.go | 6 ++-
pkg/kubelet/cm/cpumanager/cpu_manager_test.go | 11 ++++--
pkg/kubelet/cm/cpumanager/policy_static.go | 30 ++++++++++++---
.../cm/cpumanager/policy_static_test.go | 38 ++++++++++++++-----
4 files changed, 65 insertions(+), 20 deletions(-)
diff --git a/pkg/kubelet/cm/cpumanager/cpu_manager.go b/pkg/kubelet/cm/cpumanager/cpu_manager.go
index 29194271..fba0bfd1 100644
--- a/pkg/kubelet/cm/cpumanager/cpu_manager.go
+++ b/pkg/kubelet/cm/cpumanager/cpu_manager.go
@@ -187,7 +187,11 @@ func NewManager(cpuPolicyName string, cpuPolicyOptions map[string]string, reconc
// exclusively allocated.
reservedCPUsFloat := float64(reservedCPUs.MilliValue()) / 1000
numReservedCPUs := int(math.Ceil(reservedCPUsFloat))
- policy, err = NewStaticPolicy(topo, numReservedCPUs, specificCPUs, affinity, cpuPolicyOptions)
+ // NOTE: Set excludeReserved unconditionally to exclude reserved CPUs from default cpuset.
+ // This variable is primarily to make testing easier.
+ excludeReserved := true
+ policy, err = NewStaticPolicy(topo, numReservedCPUs, specificCPUs, affinity, cpuPolicyOptions, excludeReserved)
+
if err != nil {
return nil, fmt.Errorf("new static policy error: %w", err)
}
diff --git a/pkg/kubelet/cm/cpumanager/cpu_manager_test.go b/pkg/kubelet/cm/cpumanager/cpu_manager_test.go
index db0a3560..bbfc70b8 100644
--- a/pkg/kubelet/cm/cpumanager/cpu_manager_test.go
+++ b/pkg/kubelet/cm/cpumanager/cpu_manager_test.go
@@ -215,6 +215,7 @@ func makeMultiContainerPod(initCPUs, appCPUs []struct{ request, limit string })
}
func TestCPUManagerAdd(t *testing.T) {
+ testExcl := false
testPolicy, _ := NewStaticPolicy(
&topology.CPUTopology{
NumCPUs: 4,
@@ -230,7 +231,8 @@ func TestCPUManagerAdd(t *testing.T) {
0,
cpuset.NewCPUSet(),
topologymanager.NewFakeManager(),
- nil)
+ nil,
+ testExcl)
testCases := []struct {
description string
updateErr error
@@ -479,8 +481,9 @@ func TestCPUManagerAddWithInitContainers(t *testing.T) {
},
}
+ testExcl := false
for _, testCase := range testCases {
- policy, _ := NewStaticPolicy(testCase.topo, testCase.numReservedCPUs, cpuset.NewCPUSet(), topologymanager.NewFakeManager(), nil)
+ policy, _ := NewStaticPolicy(testCase.topo, testCase.numReservedCPUs, cpuset.NewCPUSet(), topologymanager.NewFakeManager(), nil, testExcl)
mockState := &mockState{
assignments: testCase.stAssignments,
@@ -991,6 +994,7 @@ func TestReconcileState(t *testing.T) {
// above test cases are without kubelet --reserved-cpus cmd option
// the following tests are with --reserved-cpus configured
func TestCPUManagerAddWithResvList(t *testing.T) {
+ testExcl := false
testPolicy, _ := NewStaticPolicy(
&topology.CPUTopology{
NumCPUs: 4,
@@ -1006,7 +1010,8 @@ func TestCPUManagerAddWithResvList(t *testing.T) {
1,
cpuset.NewCPUSet(0),
topologymanager.NewFakeManager(),
- nil)
+ nil,
+ testExcl)
testCases := []struct {
description string
updateErr error
diff --git a/pkg/kubelet/cm/cpumanager/policy_static.go b/pkg/kubelet/cm/cpumanager/policy_static.go
index f5d275d8..3859ae72 100644
--- a/pkg/kubelet/cm/cpumanager/policy_static.go
+++ b/pkg/kubelet/cm/cpumanager/policy_static.go
@@ -96,6 +96,8 @@ type staticPolicy struct {
topology *topology.CPUTopology
// set of CPUs that is not available for exclusive assignment
reserved cpuset.CPUSet
+ // If true, default CPUSet should exclude reserved CPUs
+ excludeReserved bool
// topology manager reference to get container Topology affinity
affinity topologymanager.Store
// set of CPUs to reuse across allocations in a pod
@@ -110,7 +112,7 @@ var _ Policy = &staticPolicy{}
// NewStaticPolicy returns a CPU manager policy that does not change CPU
// assignments for exclusively pinned guaranteed containers after the main
// container process starts.
-func NewStaticPolicy(topology *topology.CPUTopology, numReservedCPUs int, reservedCPUs cpuset.CPUSet, affinity topologymanager.Store, cpuPolicyOptions map[string]string) (Policy, error) {
+func NewStaticPolicy(topology *topology.CPUTopology, numReservedCPUs int, reservedCPUs cpuset.CPUSet, affinity topologymanager.Store, cpuPolicyOptions map[string]string, excludeReserved bool) (Policy, error) {
opts, err := NewStaticPolicyOptions(cpuPolicyOptions)
if err != nil {
return nil, err
@@ -141,6 +143,7 @@ func NewStaticPolicy(topology *topology.CPUTopology, numReservedCPUs int, reserv
return &staticPolicy{
topology: topology,
reserved: reserved,
+ excludeReserved: excludeReserved,
affinity: affinity,
cpusToReuse: make(map[string]cpuset.CPUSet),
options: opts,
@@ -170,7 +173,15 @@ func (p *staticPolicy) validateState(s state.State) error {
}
// state is empty initialize
allCPUs := p.topology.CPUDetails.CPUs()
- s.SetDefaultCPUSet(allCPUs)
+ if p.excludeReserved {
+ // Exclude reserved CPUs from the default CPUSet to keep containers off them
+ // unless explicitly affined.
+ s.SetDefaultCPUSet(allCPUs.Difference(p.reserved))
+ } else {
+ s.SetDefaultCPUSet(allCPUs)
+ }
+ klog.Infof("[cpumanager] static policy: CPUSet: allCPUs:%v, reserved:%v, default:%v\n",
+ allCPUs, p.reserved, s.GetDefaultCPUSet())
return nil
}
@@ -178,11 +189,12 @@ func (p *staticPolicy) validateState(s state.State) error {
// 1. Check if the reserved cpuset is not part of default cpuset because:
// - kube/system reserved have changed (increased) - may lead to some containers not being able to start
// - user tampered with file
- if !p.reserved.Intersection(tmpDefaultCPUset).Equals(p.reserved) {
- return fmt.Errorf("not all reserved cpus: \"%s\" are present in defaultCpuSet: \"%s\"",
- p.reserved.String(), tmpDefaultCPUset.String())
+ if !p.excludeReserved {
+ if !p.reserved.Intersection(tmpDefaultCPUset).Equals(p.reserved) {
+ return fmt.Errorf("not all reserved cpus: \"%s\" are present in defaultCpuSet: \"%s\"",
+ p.reserved.String(), tmpDefaultCPUset.String())
+ }
}
-
// 2. Check if state for static policy is consistent
for pod := range tmpAssignments {
for container, cset := range tmpAssignments[pod] {
@@ -209,6 +221,9 @@ func (p *staticPolicy) validateState(s state.State) error {
}
}
totalKnownCPUs = totalKnownCPUs.UnionAll(tmpCPUSets)
+ if p.excludeReserved {
+ totalKnownCPUs = totalKnownCPUs.Union(p.reserved)
+ }
if !totalKnownCPUs.Equals(p.topology.CPUDetails.CPUs()) {
return fmt.Errorf("current set of available CPUs \"%s\" doesn't match with CPUs in state \"%s\"",
p.topology.CPUDetails.CPUs().String(), totalKnownCPUs.String())
@@ -294,6 +309,9 @@ func (p *staticPolicy) RemoveContainer(s state.State, podUID string, containerNa
klog.InfoS("Static policy: RemoveContainer", "podUID", podUID, "containerName", containerName)
if toRelease, ok := s.GetCPUSet(podUID, containerName); ok {
s.Delete(podUID, containerName)
+ if p.excludeReserved {
+ toRelease = toRelease.Difference(p.reserved)
+ }
// Mutate the shared pool, adding released cpus.
s.SetDefaultCPUSet(s.GetDefaultCPUSet().Union(toRelease))
}
diff --git a/pkg/kubelet/cm/cpumanager/policy_static_test.go b/pkg/kubelet/cm/cpumanager/policy_static_test.go
index d2b641fe..80bd04a1 100644
--- a/pkg/kubelet/cm/cpumanager/policy_static_test.go
+++ b/pkg/kubelet/cm/cpumanager/policy_static_test.go
@@ -33,6 +33,7 @@ type staticPolicyTest struct {
description string
topo *topology.CPUTopology
numReservedCPUs int
+ excludeReserved bool
podUID string
options map[string]string
containerName string
@@ -64,7 +65,8 @@ func (spt staticPolicyTest) PseudoClone() staticPolicyTest {
}
func TestStaticPolicyName(t *testing.T) {
- policy, _ := NewStaticPolicy(topoSingleSocketHT, 1, cpuset.NewCPUSet(), topologymanager.NewFakeManager(), nil)
+ testExcl := false
+ policy, _ := NewStaticPolicy(topoSingleSocketHT, 1, cpuset.NewCPUSet(), topologymanager.NewFakeManager(), nil, testExcl)
policyName := policy.Name()
if policyName != "static" {
@@ -94,6 +96,15 @@ func TestStaticPolicyStart(t *testing.T) {
stDefaultCPUSet: cpuset.NewCPUSet(),
expCSet: cpuset.NewCPUSet(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11),
},
+ {
+ description: "empty cpuset exclude reserved",
+ topo: topoDualSocketHT,
+ numReservedCPUs: 2,
+ excludeReserved: true,
+ stAssignments: state.ContainerCPUAssignments{},
+ stDefaultCPUSet: cpuset.NewCPUSet(),
+ expCSet: cpuset.NewCPUSet(1, 2, 3, 4, 5, 7, 8, 9, 10, 11),
+ },
{
description: "reserved cores 0 & 6 are not present in available cpuset",
topo: topoDualSocketHT,
@@ -140,7 +151,8 @@ func TestStaticPolicyStart(t *testing.T) {
}
for _, testCase := range testCases {
t.Run(testCase.description, func(t *testing.T) {
- p, _ := NewStaticPolicy(testCase.topo, testCase.numReservedCPUs, cpuset.NewCPUSet(), topologymanager.NewFakeManager(), nil)
+ p, _ := NewStaticPolicy(testCase.topo, testCase.numReservedCPUs, cpuset.NewCPUSet(), topologymanager.NewFakeManager(), nil, testCase.excludeReserved)
+
policy := p.(*staticPolicy)
st := &mockState{
assignments: testCase.stAssignments,
@@ -211,7 +223,7 @@ func TestStaticPolicyAdd(t *testing.T) {
"fakeContainer100": cpuset.NewCPUSet(2, 3, 6, 7),
},
},
- stDefaultCPUSet: cpuset.NewCPUSet(0, 1, 4, 5),
+ stDefaultCPUSet: cpuset.NewCPUSet(4, 5),
pod: makePod("fakePod", "fakeContainer3", "2000m", "2000m"),
expErr: nil,
expCPUAlloc: true,
@@ -517,7 +529,8 @@ func TestStaticPolicyAdd(t *testing.T) {
}
func runStaticPolicyTestCase(t *testing.T, testCase staticPolicyTest) {
- policy, _ := NewStaticPolicy(testCase.topo, testCase.numReservedCPUs, cpuset.NewCPUSet(), topologymanager.NewFakeManager(), testCase.options)
+ testExcl := false
+ policy, _ := NewStaticPolicy(testCase.topo, testCase.numReservedCPUs, cpuset.NewCPUSet(), topologymanager.NewFakeManager(), testCase.options, testExcl)
st := &mockState{
assignments: testCase.stAssignments,
@@ -559,6 +572,7 @@ func runStaticPolicyTestCase(t *testing.T, testCase staticPolicyTest) {
}
func TestStaticPolicyRemove(t *testing.T) {
+ excludeReserved := false
testCases := []staticPolicyTest{
{
description: "SingleSocketHT, DeAllocOneContainer",
@@ -617,7 +631,7 @@ func TestStaticPolicyRemove(t *testing.T) {
}
for _, testCase := range testCases {
- policy, _ := NewStaticPolicy(testCase.topo, testCase.numReservedCPUs, cpuset.NewCPUSet(), topologymanager.NewFakeManager(), nil)
+ policy, _ := NewStaticPolicy(testCase.topo, testCase.numReservedCPUs, cpuset.NewCPUSet(), topologymanager.NewFakeManager(), nil, testCase.excludeReserved)
st := &mockState{
assignments: testCase.stAssignments,
@@ -639,6 +653,7 @@ func TestStaticPolicyRemove(t *testing.T) {
}
func TestTopologyAwareAllocateCPUs(t *testing.T) {
+ excludeReserved := false
testCases := []struct {
description string
topo *topology.CPUTopology
@@ -707,7 +722,7 @@ func TestTopologyAwareAllocateCPUs(t *testing.T) {
},
}
for _, tc := range testCases {
- p, _ := NewStaticPolicy(tc.topo, 0, cpuset.NewCPUSet(), topologymanager.NewFakeManager(), nil)
+ p, _ := NewStaticPolicy(tc.topo, 0, cpuset.NewCPUSet(), topologymanager.NewFakeManager(), nil, excludeReserved)
policy := p.(*staticPolicy)
st := &mockState{
assignments: tc.stAssignments,
@@ -779,9 +794,11 @@ func TestStaticPolicyStartWithResvList(t *testing.T) {
expNewErr: fmt.Errorf("[cpumanager] unable to reserve the required amount of CPUs (size of 0-1 did not equal 1)"),
},
}
+ testExcl := false
for _, testCase := range testCases {
t.Run(testCase.description, func(t *testing.T) {
- p, err := NewStaticPolicy(testCase.topo, testCase.numReservedCPUs, testCase.reserved, topologymanager.NewFakeManager(), nil)
+ p, err := NewStaticPolicy(testCase.topo, testCase.numReservedCPUs, testCase.reserved, topologymanager.NewFakeManager(), nil, testExcl)
+
if !reflect.DeepEqual(err, testCase.expNewErr) {
t.Errorf("StaticPolicy Start() error (%v). expected error: %v but got: %v",
testCase.description, testCase.expNewErr, err)
@@ -821,7 +838,7 @@ func TestStaticPolicyAddWithResvList(t *testing.T) {
numReservedCPUs: 1,
reserved: cpuset.NewCPUSet(0),
stAssignments: state.ContainerCPUAssignments{},
- stDefaultCPUSet: cpuset.NewCPUSet(0, 1, 2, 3, 4, 5, 6, 7),
+ stDefaultCPUSet: cpuset.NewCPUSet(1, 2, 3, 4, 5, 6, 7),
pod: makePod("fakePod", "fakeContainer2", "8000m", "8000m"),
expErr: fmt.Errorf("not enough cpus available to satisfy request"),
expCPUAlloc: false,
@@ -833,7 +850,7 @@ func TestStaticPolicyAddWithResvList(t *testing.T) {
numReservedCPUs: 2,
reserved: cpuset.NewCPUSet(0, 1),
stAssignments: state.ContainerCPUAssignments{},
- stDefaultCPUSet: cpuset.NewCPUSet(0, 1, 2, 3, 4, 5, 6, 7),
+ stDefaultCPUSet: cpuset.NewCPUSet(2, 3, 4, 5, 6, 7),
pod: makePod("fakePod", "fakeContainer2", "1000m", "1000m"),
expErr: nil,
expCPUAlloc: true,
@@ -857,8 +874,9 @@ func TestStaticPolicyAddWithResvList(t *testing.T) {
},
}
+ testExcl := true
for _, testCase := range testCases {
- policy, _ := NewStaticPolicy(testCase.topo, testCase.numReservedCPUs, testCase.reserved, topologymanager.NewFakeManager(), nil)
+ policy, _ := NewStaticPolicy(testCase.topo, testCase.numReservedCPUs, testCase.reserved, topologymanager.NewFakeManager(), nil, testExcl)
st := &mockState{
assignments: testCase.stAssignments,
--
2.17.1

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