Add a data store for ironic inspector introspection data

In environments without Swift we are currently unable to store hardware
introspection data. The inspection_store container runs an nginx server
that supports a restricted Swift-like HTTP API using WebDAV that supports
upload and retrieval of introspection data.

ansible/group_vars/all/inspector

@@ -316,3 +316,14 @@ inspector_rules: "{{ inspector_rules_default + inspector_rules_extra }}"
 # Ansible group containing switch hosts to which the workaround should be
 # applied.
 inspector_dell_switch_lldp_workaround_group:
+
+###############################################################################
+# Inspection store configuration.
+# The inspection store provides a Swift-like service for storing inspection
+# data which may be useful in environments without Swift.
+
+# Whether the inspection data store is enabled.
+inspector_store_enabled: "{{ not kolla_enable_swift | bool }}"
+
+# Port on which the inspection data store should listen.
+inspector_store_port: 8080

ansible/inspection-store.yml

@@ -0,0 +1,16 @@
+---
+# Deploy/pull/reconfigure/upgrade inspection data store.
+#
+# Follows kolla-ansible service deployment patterns.
+#
+# Variables:
+# action: One of deploy, destroy, pull, reconfigure, upgrade
+
+- name: Ensure inspection store is deployed
+  hosts: controllers[0]
+  roles:
+    - role: inspection-store
+      inspection_store_enabled: "{{ inspector_store_enabled }}"
+      inspection_store_port: "{{ inspector_store_port }}"
+      # FIXME: Use kayobe_config_path?
+      inspection_store_config_path: "/etc/kayobe/inspection-store"

ansible/kolla-openstack.yml

@@ -161,6 +161,13 @@
       kolla_inspector_enable_discovery: "{{ inspector_enable_discovery }}"
       kolla_inspector_discovery_enroll_node_driver: "{{ inspector_discovery_enroll_node_driver }}"
       kolla_inspector_extra_kernel_options: "{{ inspector_extra_kernel_options }}"
+      # Ironic inspector swift store configuration. Currently only supports the
+      # 'fake' inspection store.
+      kolla_inspector_enable_swift: "{{ inspector_store_enabled }}"
+      kolla_inspector_swift_auth:
+        auth_type: token_endpoint
+        url: "http://{% raw %}{{ api_interface_address }}{% endraw %}:{{ inspector_store_port }}"
+        token: fake-token
       # Ironic inspector's dnsmasq configuration.
       kolla_inspector_dhcp_pool_start: "{{ inspection_net_name | net_inspection_allocation_pool_start }}"
       kolla_inspector_dhcp_pool_end: "{{ inspection_net_name | net_inspection_allocation_pool_end }}"

ansible/overcloud-extras.yml

@@ -8,4 +8,5 @@
 # action: One of deploy, destroy, pull, reconfigure, upgrade
 
 - include: docker-registry.yml
+- include: inspection-store.yml
 - include: opensm.yml

ansible/roles/inspection-store/README.md

@@ -0,0 +1,37 @@
+Inspection Store
+================
+
+Ironic inspector can make use of Swift to store introspection data. Not all
+OpenStack deployments feature Swift, so it may be useful to provide a minimal
+HTTP interface that emulates Swift for storing ironic inspector's introspection
+data. This role deploys such an interface using nginx. Note that no
+authentication mechanism is provided.
+
+Requirements
+------------
+
+Docker engine should be running on the target system.
+
+Role Variables
+--------------
+
+Dependencies
+------------
+
+The `docker-py` python package is required on the target system.
+
+Example Playbook
+----------------
+
+The following playbook deploys an inspection store.
+
+    ---
+    - hosts: all
+
+      roles:
+        - role: inspection-store
+
+Author Information
+------------------
+
+- Mark Goddard (<mark@stackhpc.com>)

ansible/roles/inspection-store/defaults/main.yml

@@ -0,0 +1,37 @@
+---
+# Roughly follows kolla-ansible's service deployment patterns.
+
+# Whether an inspection store is enabled.
+inspection_store_enabled: true
+
+# Service deployment definition.
+inspection_store_services:
+  inspection_store:
+    container_name: inspection_store
+    enabled: "{{ inspection_store_enabled }}"
+    image: "{{ inspection_store_image_full }}"
+    ports:
+      - "{{ inspection_store_port }}:80"
+    volumes:
+      - "/etc/localtime:/etc/localtime:ro"
+      - "{{ inspection_store_config_path }}/nginx.conf:/etc/nginx/nginx.conf:ro"
+      - "inspection_store:/data"
+
+# The port on which the inspection store server should listen.
+inspection_store_port: 8080
+
+# Path in which to store inspection store server configuration.
+inspection_store_config_path: "/etc/inspection-store"
+
+####################
+# Inspection Store
+####################
+# NOTE: Namespace 'library' causes image task to always be changed and
+# container to never update to new images.
+inspection_store_namespace: ""
+inspection_store_image: "{{ inspection_store ~ '/' if inspection_store | default else '' }}{{ inspection_store_namespace ~ '/' if inspection_store_namespace else '' }}nginx"
+inspection_store_tag: "latest"
+inspection_store_image_full: "{{ inspection_store_image }}:{{ inspection_store_tag }}"
+
+inspection_store_restart_policy: "unless-stopped"
+inspection_store_restart_retries: 10

ansible/roles/inspection-store/handlers/main.yml

@@ -0,0 +1,15 @@
+---
+- name: Restart inspection store container
+  docker_container:
+    name: "{{ item.value.container_name }}"
+    state: started
+    restart: True
+  with_dict: "{{ inspection_store_services }}"
+  when: item.value.enabled
+
+- name: Ensure inspection store data directory exists
+  command: >
+    docker exec {{ inspection_store_services.inspection_store.container_name }}
+    bash -c "mkdir -p /data/ironic-inspector &&
+             chown nginx:nginx /data/ironic-inspector"
+  when: inspection_store_services.inspection_store.enabled

ansible/roles/inspection-store/tasks/config.yml

@@ -0,0 +1,17 @@
+---
+- name: Ensure inspection store configuration path exists
+  file:
+    path: "{{ inspection_store_config_path }}"
+    state: directory
+    owner: "{{ ansible_env.USER }}"
+    group: "{{ ansible_env.USER }}"
+    mode: 0750
+  become: True
+
+- name: Ensure inspection store server is configured
+  template:
+    src: nginx.conf
+    dest: "{{ inspection_store_config_path }}/nginx.conf"
+  notify:
+    - Restart inspection store container
+    - Ensure inspection store data directory exists

ansible/roles/inspection-store/tasks/deploy.yml

@@ -0,0 +1,3 @@
+---
+- include: config.yml
+- include: start.yml

ansible/roles/inspection-store/tasks/destroy.yml

@@ -0,0 +1,29 @@
+---
+- name: Ensure inspection store container is stopped
+  docker_container:
+    name: "{{ item.value.container_name }}"
+    state: "absent"
+  with_dict: "{{ inspection_store_services }}"
+
+- name: Check whether inspection store volumes are present
+  command: docker volume inspect {{ volume }}
+  changed_when: False
+  with_subelements:
+    - "{{ inspection_store_services }}"
+    - volumes
+  when: "'/' not in volume"
+  failed_when:
+    - volume_result.rc != 0
+    - "'No such volume' not in volume_result.stderr"
+  vars:
+    volume: "{{ item.1.split(':')[0] }}"
+  register: volume_result
+
+- name: Ensure inspection store volumes are absent
+  command: docker volume rm {{ volume }}
+  with_items: "{{ volume_result.results }}"
+  when:
+    - not item | skipped
+    - item.rc == 0
+  vars:
+    volume: "{{ item.item.1.split(':')[0] }}"

ansible/roles/inspection-store/tasks/main.yml

@@ -0,0 +1,2 @@
+---
+- include: "{{ action }}.yml"

ansible/roles/inspection-store/tasks/pull.yml

@@ -0,0 +1,10 @@
+---
+- name: Pulling inspection store container image
+  docker_image:
+    name: "{{ item.value.image }}"
+    repository: "{{ item.value.image }}"
+    state: present
+  with_dict: "{{ inspection_store_services }}"
+  when:
+    - item.value.enabled
+    - action != 'destroy'

ansible/roles/inspection-store/tasks/reconfigure.yml

@@ -0,0 +1,2 @@
+---
+- include: deploy.yml

ansible/roles/inspection-store/tasks/start.yml

@@ -0,0 +1,15 @@
+---
+- name: Ensure inspection store container is running
+  docker_container:
+    image: "{{ item.value.image }}"
+    name: "{{ item.value.container_name }}"
+    ports: "{{ item.value.ports | default(omit) }}"
+    privileged: "{{ item.value.privileged | default(omit) }}"
+    read_only: "{{ item.value.read_only | default(omit) }}"
+    restart_policy: "{{ inspection_store_restart_policy }}"
+    restart_retries: "{{ inspection_store_restart_retries }}"
+    state: "{{ item.value.enabled | ternary('started', 'absent') }}"
+    volumes: "{{ item.value.volumes }}"
+  with_dict: "{{ inspection_store_services }}"
+  notify:
+    - Ensure inspection store data directory exists

ansible/roles/inspection-store/tasks/upgrade.yml

@@ -0,0 +1,3 @@
+---
+- include: pull.yml
+- include: deploy.yml

ansible/roles/inspection-store/templates/nginx.conf

@@ -0,0 +1,40 @@
+user  nginx;
+worker_processes  1;
+
+error_log  /var/log/nginx/error.log warn;
+pid        /var/run/nginx.pid;
+
+
+events {
+    worker_connections  1024;
+}
+
+
+http {
+    include       /etc/nginx/mime.types;
+    default_type  application/octet-stream;
+
+    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
+                      '$status $body_bytes_sent "$http_referer" '
+                      '"$http_user_agent" "$http_x_forwarded_for"';
+
+    access_log  /var/log/nginx/access.log  main;
+
+    sendfile        on;
+    #tcp_nopush     on;
+
+    keepalive_timeout  65;
+
+    #gzip  on;
+
+    server {
+        listen 80;
+        root /data;
+        location /ironic-inspector {
+            return 200 "";
+        }
+        location /ironic-inspector/ {
+            dav_methods PUT DELETE;
+        }
+    }
+}

ansible/roles/kolla-openstack/defaults/main.yml

@@ -163,6 +163,13 @@ kolla_inspector_ipa_kernel_path:
 # Mutually exclusive with kolla_inspector_ipa_ramdisk_upstream_url.
 kolla_inspector_ipa_ramdisk_path:
 
+# Whether to enable the Swift introspection data store.
+kolla_inspector_enable_swift:
+
+# Dict of authentication parameters for accessing the Swift introspection data
+# store.
+kolla_inspector_swift_auth: {}
+
 # Free form extra configuration to append to ironic-inspector.conf.
 kolla_extra_inspector:
 

ansible/roles/kolla-openstack/templates/ironic-inspector.conf.j2

@@ -27,7 +27,20 @@ always_store_ramdisk_logs = True
 {% if kolla_inspector_enable_discovery %}
 # Enable discovery when nodes do not exist in Ironic.
 node_not_found_hook = enroll
+{% endif %}
 
+{% if kolla_inspector_enable_swift %}
+store_data = swift
+{% endif %}
+
+{% if kolla_inspector_enable_swift %}
+[swift]
+{% for key, value in kolla_inspector_swift_auth.items() %}
+{{ key }} = {{ value }}
+{% endfor %}
+{% endif %}
+
+{% if kolla_inspector_enable_discovery %}
 [discovery]
 # The driver with which to enroll newly discovered nodes in Ironic.
 enroll_node_driver = {{ kolla_inspector_discovery_enroll_node_driver }}

etc/kayobe/inspector.yml

@@ -109,6 +109,17 @@
 # applied.
 #inspector_dell_switch_lldp_workaround_group:
 
+###############################################################################
+# Inspection store configuration.
+# The inspection store provides a Swift-like service for storing inspection
+# data which may be useful in environments without Swift.
+
+# Whether the inspection data store is enabled.
+#inspector_store_enabled:
+
+# Port on which the inspection data store should listen.
+#inspector_store_port:
+
 ###############################################################################
 # Dummy variable to allow Ansible to accept this file.
 workaround_ansible_issue_8743: yes