6.14. 使用自动扩展服务

流程

1. 对 OpenStackControlPlane CR 进行补丁来部署自动扩展服务：

   $ oc patch openstackcontrolplane openstack --type=merge --patch '
   spec:
     telemetry:
       enabled: true
       template:
         autoscaling:
           enabled: true
           aodh:
             passwordSelector:
               aodhService: AodhPassword
             databaseAccount: aodh
             databaseInstance: openstack
             secret: osp-secret
             serviceUser: aodh
           heatInstance: heat
   '

2. 检查 aodh pod:

   $ AODH_POD=`oc get pods -l service=aodh | tail -n 1 | cut -f 1 -d' '`
   $ oc exec -t $AODH_POD -c aodh-api -- cat /etc/aodh/aodh.conf

3. 检查 aodh API 服务是否在 Identity 服务中注册：

   $ openstack endpoint list | grep aodh
   | d05d120153cd4f9b8310ac396b572926 | regionOne | aodh  | alarming  | True    | internal  | http://aodh-internal.openstack.svc:8042  |
   | d6daee0183494d7a9a5faee681c79046 | regionOne | aodh  | alarming  | True    | public    | http://aodh-public.openstack.svc:8042    |

4. 可选：使用 PrometheusAlarm 警报类型创建 aodh 警报：

   注意

   您必须使用 PrometheusAlarm 警报类型，而不是 GnocchiAggregationByResourcesAlarm。

   $ openstack alarm create --name high_cpu_alarm \
   --type prometheus \
   --query "(rate(ceilometer_cpu{resource_name=~'cirros'})) * 100" \
   --alarm-action 'log://' \
   --granularity 15 \
   --evaluation-periods 3 \
   --comparison-operator gt \
   --threshold 7000000000

   1. 验证警报是否已启用：

      $ openstack alarm list
      +--------------------------------------+------------+------------------+-------------------+----------+
      | alarm_id                             | type       | name             | state  | severity | enabled  |
      +--------------------------------------+------------+------------------+-------------------+----------+
      | 209dc2e9-f9d6-40e5-aecc-e767ce50e9c0 | prometheus | prometheus_alarm |   ok   |    low   |   True   |
      +--------------------------------------+------------+------------------+-------------------+----------+