Containerize HAProxy for HA

This service allows configuring and deploying HAProxy containers
in a HA overcloud managed by pacemaker.

The containers are managed and run by pacemaker. Pacemaker runs the
standard Kolla image but overrides the initial command so that
it explicitely calls HAProxy. This way, we shield ourselves from any
unexpected future change in Kolla.
This container needs to use the 'docker_config' section to invoke
puppet (as opposed to 'docker_puppet_tasks'), because due to the HA
composability each resource creation needs to happen on the bootstrap
node of that service and 'docker_puppet_tasks' will only run on the
controller/primary role.

Co-Authored-By: Michele Baldessari <michele@acksyn.org>
Closes-Bug: #1692908

Depends-On: Ifcf890a88ef003d3ab754cb677cbf34ba8db9312

Change-Id: I2f679bfe195733f4507e9b9e920b678e1370bb82

diff --git a/docker/services/pacemaker/haproxy.yaml b/docker/services/pacemaker/haproxy.yaml
new file mode 100644 (file)
index 0000000..ae19652
--- /dev/null
+++ b/docker/services/pacemaker/haproxy.yaml
@@ -0,0 +1,116 @@
+heat_template_version: pike
+
+description: >
+  OpenStack containerized HAproxy service for pacemaker
+
+parameters:
+  DockerNamespace:
+    description: namespace
+    default: 'tripleoupstream'
+    type: string
+  DockerHAProxyImage:
+    description: image
+    default: 'centos-binary-haproxy:latest'
+    type: string
+  ServiceNetMap:
+    default: {}
+    description: Mapping of service_name -> network name. Typically set
+                 via parameter_defaults in the resource registry.  This
+                 mapping overrides those in ServiceNetMapDefaults.
+    type: json
+  DefaultPasswords:
+    default: {}
+    type: json
+  EndpointMap:
+    default: {}
+    description: Mapping of service endpoint -> protocol. Typically set
+                 via parameter_defaults in the resource registry.
+    type: json
+  RoleName:
+    default: ''
+    description: Role name on which the service is applied
+    type: string
+  RoleParameters:
+    default: {}
+    description: Parameters specific to the role
+    type: json
+
+resources:
+
+  HAProxyBase:
+    type: ../../../puppet/services/pacemaker/haproxy.yaml
+    properties:
+      EndpointMap: {get_param: EndpointMap}
+      ServiceNetMap: {get_param: ServiceNetMap}
+      DefaultPasswords: {get_param: DefaultPasswords}
+      RoleName: {get_param: RoleName}
+      RoleParameters: {get_param: RoleParameters}
+
+outputs:
+  role_data:
+    description: Role data for the HAproxy role.
+    value:
+      service_name: {get_attr: [HAProxyBase, role_data, service_name]}
+      config_settings:
+        map_merge:
+          - get_attr: [HAProxyBase, role_data, config_settings]
+          - tripleo::haproxy::haproxy_daemon: false
+            haproxy_docker: true
+            tripleo::profile::pacemaker::haproxy_bundle::haproxy_docker_image: &haproxy_image
+              list_join:
+                - '/'
+                - [ {get_param: DockerNamespace}, {get_param: DockerHAProxyImage} ]
+      step_config:
+          list_join:
+            - "\n"
+            - - &noop_pcmk "['pcmk_bundle', 'pcmk_resource', 'pcmk_property', 'pcmk_constraint', 'pcmk_resource_default'].each |String $val| { noop_resource($val) }"
+              - 'include ::tripleo::profile::pacemaker::haproxy_bundle'
+      service_config_settings: {get_attr: [HAProxyBase, role_data, service_config_settings]}
+      # BEGIN DOCKER SETTINGS
+      puppet_config:
+        config_volume: haproxy
+        puppet_tags: haproxy_config
+        step_config:
+          list_join:
+            - "\n"
+            - - "exec {'wait-for-settle': command => '/bin/true' }"
+              - &noop_firewall "class tripleo::firewall(){}; define tripleo::firewall::rule( $port = undef, $dport = undef, $sport = undef, $proto = undef, $action = undef, $state = undef, $source = undef, $iniface = undef, $chain = undef, $destination = undef, $extras = undef){}"
+              - *noop_pcmk
+              - 'include ::tripleo::profile::pacemaker::haproxy_bundle'
+        config_image: *haproxy_image
+      kolla_config:
+        /var/lib/kolla/config_files/haproxy.json:
+          command: haproxy -f /etc/haproxy/haproxy.cfg
+      docker_config:
+        step_2:
+          haproxy_init_bundle:
+            start_order: 3
+            detach: false
+            net: host
+            user: root
+            command:
+              - '/bin/bash'
+              - '-c'
+              - str_replace:
+                  template:
+                    list_join:
+                      - '; '
+                      - - "cp -a /tmp/puppet-etc/* /etc/puppet; echo '{\"step\": 2}' > /etc/puppet/hieradata/docker.json"
+                        - "FACTER_uuid=docker puppet apply --tags file,file_line,concat,augeas,TAGS -v -e 'CONFIG'"
+                  params:
+                    TAGS: 'pacemaker::resource::bundle,pacemaker::property,pacemaker::resource::ip,pacemaker::resource::ocf,pacemaker::constraint::order,pacemaker::constraint::colocation'
+                    CONFIG:
+                      list_join:
+                        - ';'
+                        - - *noop_firewall
+                          - 'include ::tripleo::profile::base::pacemaker;include ::tripleo::profile::pacemaker::haproxy_bundle'
+            image: *haproxy_image
+            volumes:
+              - /etc/hosts:/etc/hosts:ro
+              - /etc/localtime:/etc/localtime:ro
+              - /etc/puppet:/tmp/puppet-etc:ro
+              - /usr/share/openstack-puppet/modules:/usr/share/openstack-puppet/modules:ro
+              - /etc/corosync/corosync.conf:/etc/corosync/corosync.conf:ro
+              - /dev/shm:/dev/shm:rw
+      metadata_settings:
+        get_attr: [HAProxyBase, role_data, metadata_settings]