4.2. 자동 스케일링을 위한 스택 배포 생성

프로세스

1. openstack 클라이언트 Pod에 액세스합니다.

   $ oc rsh openstackclient

2. 스택을 생성합니다.

   $ openstack stack create -t /tmp/templates/autoscaling.yaml -e /tmp/templates/resources.yaml stack1

검증

1. 스택을 성공적으로 생성했는지 확인합니다.

   $ openstack stack show stack1 -c id -c stack_status
   +--------------+--------------------------------------+
   | Field        | Value                                |
   +--------------+--------------------------------------+
   | id           | 9ac44c45-4917-4cd5-a713-9ef7828d8457 |
   | stack_status | CREATE_COMPLETE                      |
   +--------------+--------------------------------------+

2. 알람, 확장 정책 및 자동 스케일링 그룹을 포함하여 스택 리소스를 생성했는지 확인합니다.

   $ export STACK_ID=$(openstack stack show stack1 -c id -f value)
   
   $ openstack stack resource list $STACK_ID
   +------------------+--------------------------------------+----------------------------+-----------------+----------------------+
   | resource_name    | physical_resource_id                 | resource_type              | resource_status | updated_time         |
   +------------------+--------------------------------------+----------------------------+-----------------+----------------------+
   | scaleup_policy   | 3cfb2a746dcf4fb6b3284b6c164e4ff5     | OS::Heat::ScalingPolicy    | CREATE_COMPLETE | 2024-03-26T09:17:54Z |
   | scaledown_policy | ef60360ae7564abda088e67b3cc542f4     | OS::Heat::ScalingPolicy    | CREATE_COMPLETE | 2024-03-26T09:17:54Z |
   | cpu_alarm_low    | 95503054-aada-457c-b586-f98a88b00962 | OS::Aodh::PrometheusAlarm  | CREATE_COMPLETE | 2024-03-26T09:17:54Z |
   | cpu_alarm_high   | 65be604f-1262-4567-851d-ac28ae1bb178 | OS::Aodh::PrometheusAlarm  | CREATE_COMPLETE | 2024-03-26T09:17:54Z |
   | autoscalinggroup | 8c4fea31-3beb-47b7-841d-fe82fb284628 | OS::Heat::AutoScalingGroup | CREATE_COMPLETE | 2024-03-26T09:17:54Z |
   +------------------+--------------------------------------+----------------------------+-----------------+----------------------+

3. 스택 생성을 통해 인스턴스가 시작되었는지 확인합니다.

   $ openstack server list --long | grep $STACK_ID
   | 9e2e9266-d69e-4de1-8b3a-e75f7111d1d9 | autoscaling_server_stack1-autoscalinggroup-oqmxiukze6dg-hdtuapbjxcow-q366nn4k5utr | ACTIVE | None       | Running     | private=192.168.0.209, 192.168.122.205 | cirros     | 239959f7-3d16-4744-8eca-435cdfc1a4cf | m1.small | nova              | edpm-compute-0.ctlplane.example.com | metering.server_group='9ac44c45-4917-4cd5-a713-9ef7828d8457' | UP          |

4. 스택에 대한 알람을 생성했는지 확인합니다.

   1. 알람 ID를 나열합니다. 알람 상태가 데이터가 충분하지 않으면 데이터가 수집된 후 다시 확인하십시오.

      $ openstack alarm list
      +--------------------------------------+------------+------------------------------------+-------+----------+---------+
      | alarm_id                             | type       | name                               | state | severity | enabled |
      +--------------------------------------+------------+------------------------------------+-------+----------+---------+
      | 65be604f-1262-4567-851d-ac28ae1bb178 | prometheus | stack1-cpu_alarm_high-q5yw2fg4h2vh | ok    | low      | True    |
      | 95503054-aada-457c-b586-f98a88b00962 | prometheus | stack1-cpu_alarm_low-hjmpszetdpsw  | alarm | low      | True    |
      +--------------------------------------+------------+------------------------------------+-------+----------+---------+

   2. 스택의 리소스를 나열하고 cpu_alarm_high 및 cpu_alarm_low 리소스의 physical_resource_id 값을 기록해 둡니다.

      $ openstack stack resource list $STACK_ID
      +------------------+--------------------------------------+----------------------------+-----------------+----------------------+
      | resource_name    | physical_resource_id                 | resource_type              | resource_status | updated_time         |
      +------------------+--------------------------------------+----------------------------+-----------------+----------------------+
      | scaleup_policy   | 3cfb2a746dcf4fb6b3284b6c164e4ff5     | OS::Heat::ScalingPolicy    | CREATE_COMPLETE | 2024-03-26T09:17:54Z |
      | scaledown_policy | ef60360ae7564abda088e67b3cc542f4     | OS::Heat::ScalingPolicy    | CREATE_COMPLETE | 2024-03-26T09:17:54Z |
      | cpu_alarm_low    | 95503054-aada-457c-b586-f98a88b00962 | OS::Aodh::PrometheusAlarm  | CREATE_COMPLETE | 2024-03-26T09:17:54Z |
      | cpu_alarm_high   | 65be604f-1262-4567-851d-ac28ae1bb178 | OS::Aodh::PrometheusAlarm  | CREATE_COMPLETE | 2024-03-26T09:17:54Z |
      | autoscalinggroup | 8c4fea31-3beb-47b7-841d-fe82fb284628 | OS::Heat::AutoScalingGroup | CREATE_COMPLETE | 2024-03-26T09:17:54Z |
      +------------------+--------------------------------------+----------------------------+-----------------+----------------------+

5. 스택에 대한 지표 리소스 및 측정이 있는지 확인합니다. server_group에 스택의 ID를 사용합니다.

   $ openstack metric query "(rate(ceilometer_cpu{server_group=~'ac2e87ba-f55e-46e7-8f8d-f09fe91d63d1'}[150s]))/10000000"
   +---------+--------------------------------------+----------------------------------------+----------------------------------+--------------------------------------+-------------------------------------------------------------------------+--------------------------------------+------+------+----------------------------------+----------------------------------------------------------+--------------------+
   | counter | cpu                              	| instance                           	| project                      	| resource                         	| resource_name                                                       	| server_group                     	| type | unit | user                         	| vm_instance                                          	| value          	|
   +---------+--------------------------------------+----------------------------------------+----------------------------------+--------------------------------------+-------------------------------------------------------------------------+--------------------------------------+------+------+----------------------------