devstack/lib/ceph
2014-12-10 20:32:15 +00:00

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#!/bin/bash
#
# lib/ceph
# Functions to control the configuration and operation of the **Ceph** storage service
# Dependencies:
#
# - ``functions`` file
# - ``CEPH_DATA_DIR`` or ``DATA_DIR`` must be defined
# ``stack.sh`` calls the entry points in this order (via ``extras.d/60-ceph.sh``):
#
# - install_ceph
# - configure_ceph
# - init_ceph
# - start_ceph
# - stop_ceph
# - cleanup_ceph
# Save trace setting
XTRACE=$(set +o | grep xtrace)
set +o xtrace
# Defaults
# --------
# Set ``CEPH_DATA_DIR`` to the location of Ceph drives and objects.
# Default is the common DevStack data directory.
CEPH_DATA_DIR=${CEPH_DATA_DIR:-/var/lib/ceph}
CEPH_DISK_IMAGE=${CEPH_DATA_DIR}/drives/images/ceph.img
# Set ``CEPH_CONF_DIR`` to the location of the configuration files.
# Default is ``/etc/ceph``.
CEPH_CONF_DIR=${CEPH_CONF_DIR:-/etc/ceph}
# DevStack will create a loop-back disk formatted as XFS to store the
# Ceph data. Set ``CEPH_LOOPBACK_DISK_SIZE`` to the disk size in
# kilobytes.
# Default is 1 gigabyte.
CEPH_LOOPBACK_DISK_SIZE_DEFAULT=4G
CEPH_LOOPBACK_DISK_SIZE=${CEPH_LOOPBACK_DISK_SIZE:-$CEPH_LOOPBACK_DISK_SIZE_DEFAULT}
# Common
CEPH_FSID=$(uuidgen)
CEPH_CONF_FILE=${CEPH_CONF_DIR}/ceph.conf
# Glance
GLANCE_CEPH_USER=${GLANCE_CEPH_USER:-glance}
GLANCE_CEPH_POOL=${GLANCE_CEPH_POOL:-images}
GLANCE_CEPH_POOL_PG=${GLANCE_CEPH_POOL_PG:-8}
GLANCE_CEPH_POOL_PGP=${GLANCE_CEPH_POOL_PGP:-8}
# Nova
NOVA_CEPH_POOL=${NOVA_CEPH_POOL:-vms}
NOVA_CEPH_POOL_PG=${NOVA_CEPH_POOL_PG:-8}
NOVA_CEPH_POOL_PGP=${NOVA_CEPH_POOL_PGP:-8}
# Cinder
CINDER_CEPH_POOL=${CINDER_CEPH_POOL:-volumes}
CINDER_CEPH_POOL_PG=${CINDER_CEPH_POOL_PG:-8}
CINDER_CEPH_POOL_PGP=${CINDER_CEPH_POOL_PGP:-8}
CINDER_CEPH_USER=${CINDER_CEPH_USER:-cinder}
CINDER_CEPH_UUID=${CINDER_CEPH_UUID:-$(uuidgen)}
# Set ``CEPH_REPLICAS`` to configure how many replicas are to be
# configured for your Ceph cluster. By default we are configuring
# only one replica since this is way less CPU and memory intensive. If
# you are planning to test Ceph replication feel free to increase this value
CEPH_REPLICAS=${CEPH_REPLICAS:-1}
CEPH_REPLICAS_SEQ=$(seq ${CEPH_REPLICAS})
# Functions
# ------------
function get_ceph_version {
local ceph_version_str=$(sudo ceph daemon mon.$(hostname) version | cut -d '"' -f 4 | cut -f 1,2 -d '.')
echo $ceph_version_str
}
# import_libvirt_secret_ceph() - Imports Cinder user key into libvirt
# so it can connect to the Ceph cluster while attaching a Cinder block device
function import_libvirt_secret_ceph {
cat > secret.xml <<EOF
<secret ephemeral='no' private='no'>
<uuid>${CINDER_CEPH_UUID}</uuid>
<usage type='ceph'>
<name>client.${CINDER_CEPH_USER} secret</name>
</usage>
</secret>
EOF
sudo virsh secret-define --file secret.xml
sudo virsh secret-set-value --secret ${CINDER_CEPH_UUID} --base64 $(sudo ceph -c ${CEPH_CONF_FILE} auth get-key client.${CINDER_CEPH_USER})
sudo rm -f secret.xml
}
# cleanup_ceph() - Remove residual data files, anything left over from previous
# runs that a clean run would need to clean up
function cleanup_ceph {
sudo pkill -f ceph-mon
sudo pkill -f ceph-osd
sudo rm -rf ${CEPH_DATA_DIR}/*/*
sudo rm -rf ${CEPH_CONF_DIR}/*
if egrep -q ${CEPH_DATA_DIR} /proc/mounts; then
sudo umount ${CEPH_DATA_DIR}
fi
if [[ -e ${CEPH_DISK_IMAGE} ]]; then
sudo rm -f ${CEPH_DISK_IMAGE}
fi
uninstall_package ceph ceph-common python-ceph libcephfs1 > /dev/null 2>&1
if is_service_enabled cinder || is_service_enabled nova; then
local virsh_uuid=$(sudo virsh secret-list | awk '/^ ?[0-9a-z]/ { print $1 }')
sudo virsh secret-undefine ${virsh_uuid} >/dev/null 2>&1
fi
if is_service_enabled nova; then
iniset $NOVA_CONF libvirt rbd_secret_uuid ""
fi
}
# configure_ceph() - Set config files, create data dirs, etc
function configure_ceph {
local count=0
# create a backing file disk
create_disk ${CEPH_DISK_IMAGE} ${CEPH_DATA_DIR} ${CEPH_LOOPBACK_DISK_SIZE}
# populate ceph directory
sudo mkdir -p ${CEPH_DATA_DIR}/{bootstrap-mds,bootstrap-osd,mds,mon,osd,tmp}
# create ceph monitor initial key and directory
sudo ceph-authtool /var/lib/ceph/tmp/keyring.mon.$(hostname) --create-keyring --name=mon. --add-key=$(ceph-authtool --gen-print-key) --cap mon 'allow *'
sudo mkdir /var/lib/ceph/mon/ceph-$(hostname)
# create a default ceph configuration file
sudo tee -a ${CEPH_CONF_FILE} > /dev/null <<EOF
[global]
fsid = ${CEPH_FSID}
mon_initial_members = $(hostname)
mon_host = ${SERVICE_HOST}
auth_cluster_required = cephx
auth_service_required = cephx
auth_client_required = cephx
filestore_xattr_use_omap = true
osd crush chooseleaf type = 0
osd journal size = 100
EOF
# bootstrap the ceph monitor
sudo ceph-mon -c ${CEPH_CONF_FILE} --mkfs -i $(hostname) --keyring /var/lib/ceph/tmp/keyring.mon.$(hostname)
if is_ubuntu; then
sudo touch /var/lib/ceph/mon/ceph-$(hostname)/upstart
sudo initctl emit ceph-mon id=$(hostname)
else
sudo touch /var/lib/ceph/mon/ceph-$(hostname)/sysvinit
sudo service ceph start mon.$(hostname)
fi
# wait for the admin key to come up otherwise we will not be able to do the actions below
until [ -f ${CEPH_CONF_DIR}/ceph.client.admin.keyring ]; do
echo_summary "Waiting for the Ceph admin key to be ready..."
count=$(($count + 1))
if [ $count -eq 3 ]; then
die $LINENO "Maximum of 3 retries reached"
fi
sleep 5
done
# pools data and metadata were removed in the Giant release so depending on the version we apply different commands
local ceph_version=$(get_ceph_version)
# change pool replica size according to the CEPH_REPLICAS set by the user
if [[ ${ceph_version%%.*} -eq 0 ]] && [[ ${ceph_version##*.} -lt 87 ]]; then
sudo ceph -c ${CEPH_CONF_FILE} osd pool set rbd size ${CEPH_REPLICAS}
sudo ceph -c ${CEPH_CONF_FILE} osd pool set data size ${CEPH_REPLICAS}
sudo ceph -c ${CEPH_CONF_FILE} osd pool set metadata size ${CEPH_REPLICAS}
else
sudo ceph -c ${CEPH_CONF_FILE} osd pool set rbd size ${CEPH_REPLICAS}
fi
# create a simple rule to take OSDs instead of host with CRUSH
# then apply this rules to the default pool
if [[ $CEPH_REPLICAS -ne 1 ]]; then
sudo ceph -c ${CEPH_CONF_FILE} osd crush rule create-simple devstack default osd
RULE_ID=$(sudo ceph -c ${CEPH_CONF_FILE} osd crush rule dump devstack | awk '/rule_id/ {print $3}' | cut -d ',' -f1)
sudo ceph -c ${CEPH_CONF_FILE} osd pool set rbd crush_ruleset ${RULE_ID}
sudo ceph -c ${CEPH_CONF_FILE} osd pool set data crush_ruleset ${RULE_ID}
sudo ceph -c ${CEPH_CONF_FILE} osd pool set metadata crush_ruleset ${RULE_ID}
fi
# create the OSD(s)
for rep in ${CEPH_REPLICAS_SEQ}; do
OSD_ID=$(sudo ceph -c ${CEPH_CONF_FILE} osd create)
sudo mkdir -p ${CEPH_DATA_DIR}/osd/ceph-${OSD_ID}
sudo ceph-osd -c ${CEPH_CONF_FILE} -i ${OSD_ID} --mkfs
sudo ceph -c ${CEPH_CONF_FILE} auth get-or-create osd.${OSD_ID} mon 'allow profile osd ' osd 'allow *' | sudo tee ${CEPH_DATA_DIR}/osd/ceph-${OSD_ID}/keyring
# ceph's init script is parsing ${CEPH_DATA_DIR}/osd/ceph-${OSD_ID}/ and looking for a file
# 'upstart' or 'sysinitv', thanks to these 'touches' we are able to control OSDs daemons
# from the init script.
if is_ubuntu; then
sudo touch ${CEPH_DATA_DIR}/osd/ceph-${OSD_ID}/upstart
else
sudo touch ${CEPH_DATA_DIR}/osd/ceph-${OSD_ID}/sysvinit
fi
done
}
# configure_ceph_glance() - Glance config needs to come after Glance is set up
function configure_ceph_glance {
# configure Glance service options, ceph pool, ceph user and ceph key
sudo ceph -c ${CEPH_CONF_FILE} osd pool create ${GLANCE_CEPH_POOL} ${GLANCE_CEPH_POOL_PG} ${GLANCE_CEPH_POOL_PGP}
sudo ceph -c ${CEPH_CONF_FILE} osd pool set ${GLANCE_CEPH_POOL} size ${CEPH_REPLICAS}
if [[ $CEPH_REPLICAS -ne 1 ]]; then
sudo ceph -c ${CEPH_CONF_FILE} osd pool set ${GLANCE_CEPH_POOL} crush_ruleset ${RULE_ID}
fi
sudo ceph -c ${CEPH_CONF_FILE} auth get-or-create client.${GLANCE_CEPH_USER} mon "allow r" osd "allow class-read object_prefix rbd_children, allow rwx pool=${GLANCE_CEPH_POOL}" | sudo tee ${CEPH_CONF_DIR}/ceph.client.${GLANCE_CEPH_USER}.keyring
sudo chown ${STACK_USER}:$(id -g -n $whoami) ${CEPH_CONF_DIR}/ceph.client.${GLANCE_CEPH_USER}.keyring
# NOTE(eharney): When Glance has fully migrated to Glance store,
# default_store can be removed from [DEFAULT]. (See lib/glance.)
iniset $GLANCE_API_CONF DEFAULT default_store rbd
iniset $GLANCE_API_CONF DEFAULT show_image_direct_url True
iniset $GLANCE_API_CONF glance_store default_store rbd
iniset $GLANCE_API_CONF glance_store stores "file, http, rbd"
iniset $GLANCE_API_CONF glance_store rbd_store_ceph_conf $CEPH_CONF_FILE
iniset $GLANCE_API_CONF glance_store rbd_store_user $GLANCE_CEPH_USER
iniset $GLANCE_API_CONF glance_store rbd_store_pool $GLANCE_CEPH_POOL
}
# configure_ceph_nova() - Nova config needs to come after Nova is set up
function configure_ceph_nova {
# configure Nova service options, ceph pool, ceph user and ceph key
sudo ceph -c ${CEPH_CONF_FILE} osd pool create ${NOVA_CEPH_POOL} ${NOVA_CEPH_POOL_PG} ${NOVA_CEPH_POOL_PGP}
sudo ceph -c ${CEPH_CONF_FILE} osd pool set ${NOVA_CEPH_POOL} size ${CEPH_REPLICAS}
if [[ $CEPH_REPLICAS -ne 1 ]]; then
sudo -c ${CEPH_CONF_FILE} ceph osd pool set ${NOVA_CEPH_POOL} crush_ruleset ${RULE_ID}
fi
iniset $NOVA_CONF libvirt rbd_user ${CINDER_CEPH_USER}
iniset $NOVA_CONF libvirt rbd_secret_uuid ${CINDER_CEPH_UUID}
iniset $NOVA_CONF libvirt inject_key false
iniset $NOVA_CONF libvirt inject_partition -2
iniset $NOVA_CONF libvirt disk_cachemodes "network=writeback"
iniset $NOVA_CONF libvirt images_type rbd
iniset $NOVA_CONF libvirt images_rbd_pool ${NOVA_CEPH_POOL}
iniset $NOVA_CONF libvirt images_rbd_ceph_conf ${CEPH_CONF_FILE}
if ! is_service_enabled cinder; then
sudo ceph -c ${CEPH_CONF_FILE} auth get-or-create client.${CINDER_CEPH_USER} mon "allow r" osd "allow class-read object_prefix rbd_children, allow rwx pool=${CINDER_CEPH_POOL}, allow rwx pool=${NOVA_CEPH_POOL},allow rx pool=${GLANCE_CEPH_POOL}" | sudo tee ${CEPH_CONF_DIR}/ceph.client.${CINDER_CEPH_USER}.keyring > /dev/null
sudo chown ${STACK_USER}:$(id -g -n $whoami) ${CEPH_CONF_DIR}/ceph.client.${CINDER_CEPH_USER}.keyring
fi
}
# configure_ceph_cinder() - Cinder config needs to come after Cinder is set up
function configure_ceph_cinder {
# Configure Cinder service options, ceph pool, ceph user and ceph key
sudo ceph -c ${CEPH_CONF_FILE} osd pool create ${CINDER_CEPH_POOL} ${CINDER_CEPH_POOL_PG} ${CINDER_CEPH_POOL_PGP}
sudo ceph -c ${CEPH_CONF_FILE} osd pool set ${CINDER_CEPH_POOL} size ${CEPH_REPLICAS}
if [[ $CEPH_REPLICAS -ne 1 ]]; then
sudo ceph -c ${CEPH_CONF_FILE} osd pool set ${CINDER_CEPH_POOL} crush_ruleset ${RULE_ID}
fi
sudo ceph -c ${CEPH_CONF_FILE} auth get-or-create client.${CINDER_CEPH_USER} mon "allow r" osd "allow class-read object_prefix rbd_children, allow rwx pool=${CINDER_CEPH_POOL}, allow rwx pool=${NOVA_CEPH_POOL},allow rx pool=${GLANCE_CEPH_POOL}" | sudo tee ${CEPH_CONF_DIR}/ceph.client.${CINDER_CEPH_USER}.keyring
sudo chown ${STACK_USER}:$(id -g -n $whoami) ${CEPH_CONF_DIR}/ceph.client.${CINDER_CEPH_USER}.keyring
}
# init_ceph() - Initialize databases, etc.
function init_ceph {
# clean up from previous (possibly aborted) runs
# make sure to kill all ceph processes first
sudo pkill -f ceph-mon || true
sudo pkill -f ceph-osd || true
}
# install_ceph() - Collect source and prepare
function install_ceph {
# NOTE(dtroyer): At some point it'll be easier to test for unsupported distros,
# leveraging the list in stack.sh
if [[ ${os_CODENAME} =~ trusty ]] || [[ ${os_CODENAME} =~ SchrödingersCat ]] || [[ ${os_CODENAME} =~ Heisenbug ]]; then
NO_UPDATE_REPOS=False
install_package ceph
else
exit_distro_not_supported "Ceph since your distro doesn't provide (at least) the Firefly release. Please use Ubuntu Trusty or Fedora 19/20"
fi
}
# start_ceph() - Start running processes, including screen
function start_ceph {
if is_ubuntu; then
sudo initctl emit ceph-mon id=$(hostname)
for id in $(sudo ceph -c ${CEPH_CONF_FILE} osd ls); do
sudo start ceph-osd id=${id}
done
else
sudo service ceph start
fi
}
# stop_ceph() - Stop running processes (non-screen)
function stop_ceph {
if is_ubuntu; then
sudo service ceph-mon-all stop > /dev/null 2>&1
sudo service ceph-osd-all stop > /dev/null 2>&1
else
sudo service ceph stop > /dev/null 2>&1
fi
}
# Restore xtrace
$XTRACE
## Local variables:
## mode: shell-script
## End: