OpenStack Senlin
此專案為集群及服務，可將VM和Container作為集群，對於集群內的資源可以管理，規模可彈性伸縮、成員間負載均衡、被管對象和策略可定制等等。Auto scaling的部分也由senlin管理，透過簡單的yaml定義，不需寫得像heat模板般複雜，目前Auto scaling 可以使用 senlin 或 Heat 來實現。
由於此篇是由很久之前的個人紀錄搬至gitbook
內容已過時，僅供參考
使用 Auto scaling 前，請先安裝 ceilometer、gnocchi、aodh 專案，以下範例為 Queens 版。
安裝步驟
安裝服務
以下步驟在 Controller 執行。 確認 openstack sdk 版本是否為 0.17.2，若不是可以用 pip 安裝
# pip show openstacksdk
---
Metadata-Version: 2.1
Name: openstacksdk
Version: 0.17.2
# pip install openstacksdk==0.17.2安裝 senlin 請至 pypi 查看版號
# pip install senlin==6.0.0建立資料夾及 user
# groupadd -r senlin
# adduser --system selin senlin
# mkdir /etc/senlin /var/log/senlin建立資料庫 (注意 database 的 user)
#mysql -u root -p
CREATE DATABASE senlin;
GRANT ALL PRIVILEGES ON senlin.* TO 'admin'@'localhost' \
IDENTIFIED BY 'openstack';
GRANT ALL PRIVILEGES ON senlin.* TO 'admin'@'%' \
IDENTIFIED BY 'openstack';建立資料表
# senlin-manage db_sync設定 /etc/senlin/senlin.conf，根據環境替換 IP 和 hostname
[DEFAULT]
log_dir = /var/log/senlin
transport_url = rabbit://openstack:openstack@controller1
[senlin_api]
bind_host = 10.50.2.4
bind_port = 8780
[receiver]
host = 10.50.2.4
port = 8780
[database]
connection = mysql+pymysql://senlin:openstack@10.50.2.3/senlin
[keystone_authtoken]
www_authenticate_uri = http://10.50.2.3:5000/v3
auth_url = http://10.50.2.3:5000
auth_type = password
project_name = service
username = senlin
password = openstack
project_domain_name = Default
user_domain_name = Default
memcached_servers = controller1:11211
[authentication]
auth_url = http://10.50.2.3:5000/v3
service_username = senlin
service_password = openstack
service_project_name = service
service_user_domain = Default
service_project_domain = Default
[oslo_messaging_notifications]
driver = messagingv2
transport_url = rabbit://openstack:openstack@10.50.2.14
[oslo_policy]
policy_file = /etc/senlin/policy.yaml建立 user 和 Endpoint，根據環境替換 IP 和 hostname
# openstack user create --domain default --password-prompt senlin
# openstack role add --project service --user senlin admin
# openstack service create --name senlin--description "Senlin Clustering Service V1"
# openstack endpoint create --region RegionOne clustering public http://ip:8780
# openstack endpoint create --region RegionOne clustering internal http://ip:8780
# openstack endpoint create --region RegionOne clustering admin http://ip:8780
建立 senlin-api service
# vim /lib/systemd/system/senlin-api.service
[Unit]
Description = OpenStack Clustering Service API
[Service]
ExecStart = /usr/local/bin/senlin-api --config-file /etc/senlin/senlin.conf --log-file /var/log/senlin/senlin-api.log
User = senlin
TimeoutStartSec=120
TimeoutStopSec=300
Restart=on-failure
RestartSec=2
[Install]
WantedBy = multi-user.target建立 senlin-engine 服務
# vim /lib/systemd/system/senlin-engine.service
[Unit]
Description = OpenStack Clustering engine Service API
[Service]
ExecStart = /usr/local/bin/senlin-engine --config-file /etc/senlin/senlin.conf --log-file /var/log/senlin/senlin-engine.log
User = senlin
TimeoutStartSec=120
TimeoutStopSec=300
Restart=on-failure
RestartSec=2
[Install]
WantedBy = multi-user.target建立 /etc/senlin/policy.yaml
# vim /etc/senlin/policy.yaml
#
#"context_is_admin": "role:admin"
#
#"deny_everybody": "!"
# Show build information
# GET /v1/build-info
#"build_info:build_info": ""
# List profile types
# GET /v1/profile-types
#"profile_types:index": ""
# Show profile type details
# GET /v1/profile-types/{profile_type}
#"profile_types:get": ""
# List profile type operations
# GET /v1/profile-types/{profile_type}/ops
#"profile_types:ops": ""
# List policy types
# GET /v1/policy-types
#"policy_types:index": ""
# Show policy type details
# GET /v1/policy-types/{policy_type}
#"policy_types:get": ""
# List clusters
# GET /v1/clusters
#"clusters:index": ""
# Create cluster
# POST /v1/clusters
#"clusters:create": ""
# Delete cluster
# DELETE /v1/clusters/{cluster_id}
#"clusters:delete": ""
# Show cluster details
# GET /v1/clusters/{cluster_id}
#"clusters:get": ""
# Perform specified action on a cluster.
# POST /v1/clusters/{cluster_id}/actions
#"clusters:action": ""
# Update cluster
# PATCH /v1/clusters/{cluster_id}
#"clusters:update": ""
# Collect Attributes Across a Cluster
# GET v1/clusters/{cluster_id}/attrs/{path}
#"clusters:collect": ""
# Perform an Operation on a Cluster
# POST /v1/clusters/{cluster_id}/ops
#"clusters:operation": ""
# List profiles
# GET /v1/profiles
#"profiles:index": ""
# Create profile
# POST /v1/profiles
#"profiles:create": ""
# Show profile details
# GET /v1/profiles/{profile_id}
#"profiles:get": ""
# Delete profile
# DELETE /v1/profiles/{profile_id}
#"profiles:delete": ""
# Update profile
# PATCH /v1/profiles/{profile_id}
#"profiles:update": ""
# Validate profile
# POST /v1/profiles/validate
#"profiles:validate": ""
# List nodes
# GET /v1/nodes
#"nodes:index": ""
# Create node
# GET /v1/nodes
#"nodes:create": ""
# Adopt node
# POST /v1/nodes/adopt
#"nodes:adopt": ""
# Adopt node (preview)
# POST /v1/nodes/adopt-preview
#"nodes:adopt_preview": ""
# Show node details
# GET /v1/nodes/{node_id}
#"nodes:get": ""
# Perform specified action on a Node.
# POST /v1/nodes/{node_id}/actions
#"nodes:action": ""
# Update node
# PATCH /v1/nodes/{node_id}
#"nodes:update": ""
# Delete node
# DELETE /v1/nodes/{node_id}
#"nodes:delete": ""
# Perform an Operation on a Node
# POST /v1/nodes/{node_id}/ops
#"nodes:operation": ""
# List policies
# GET /v1/policies
#"policies:index": ""
# Create policy
# POST /v1/policies
#"policies:create": ""
# Show policy details
# GET /v1/policies/{policy_id}
#"policies:get": ""
# Update policy
# PATCH /v1/policies/{policy_id}
#"policies:update": ""
# Delete policy
# DELETE /v1/policies/{policy_id}
#"policies:delete": ""
# Validate policy.
# POST /v1/policies/validate
#"policies:validate": ""
# List cluster policies
# GET /v1/clusters/{cluster_id}/policies
#"cluster_policies:index": ""
# Attach a Policy to a Cluster
# POST /v1/clusters/{cluster_id}/actions
#"cluster_policies:attach": ""
# Detach a Policy from a Cluster
# POST /v1/clusters/{cluster_id}/actions
#"cluster_policies:detach": ""
# Update a Policy on a Cluster
# POST /v1/clusters/{cluster_id}/actions
#"cluster_policies:update": ""
# Show cluster_policy details
# GET /v1/clusters/{cluster_id}/policies/{policy_id}
#"cluster_policies:get": ""
# List receivers
# GET /v1/receivers
#"receivers:index": ""
# Create receiver
# POST /v1/receivers
#"receivers:create": ""
# Show receiver details
# GET /v1/receivers/{receiver_id}
#"receivers:get": ""
# Update receiver
# PATCH /v1/receivers/{receiver_id}
#"receivers:update": ""
# Delete receiver
# DELETE /v1/receivers/{receiver_id}
#"receivers:delete": ""
# Notify receiver
# POST /v1/receivers/{receiver_id}/notify
#"receivers:notify": ""
# List actions
# GET /v1/actions
#"actions:index": ""
# Show action details
# GET /v1/actions/{action_id}
#"actions:get": ""
# Update action
# PATCH /v1/actions/{action_id}
#"actions:update": ""
# List events
# GET /v1/events
#"events:index": ""
# Show event details
# GET /v1/events/{event_id}
#"events:get": ""
# Trigger webhook action
# POST /v1/webhooks/{webhook_id}/trigger
#"webhooks:trigger": ""
# List services
# GET /v1/services
#"services:index": "role:admin"修改資料夾權限
# chown -R senlin:senlin /etc/senlin /var/log/senlin啟用服務
# systemctl enable senlin-api
# systemctl enable senlin-engine
安裝 senlin-dashboard
# git clone https://github.com/openstack/senlin-dashboard.git -b stable/queens
# cd senlin-dashboard
# pip install .啟用 dashboard
# cp /opt/senlin-dashboard/senlin_dashboard/enabled/_50_senlin.py /usr/share/openstack-dashboard/openstack_dashboard/local/enabled/_50_senlin.pyAuto Scaling 前置設定
請先安裝 ceilometer，gnocchi，aodh
senlin 和 gnocchi、整合有些 bug，因此需要修改一下程式碼
Heat 的 autoscaling 是透過 vm 中 metadata 的 server_group=stack_id 來辨識是否為同一個 heat stack，gnocchi 所儲存的資源有包含 server_group。
senlin 所產生的 cluster 會有 cluster_id，並且在 VM 的 metadata 加上 clusetr_id 加以辨認，但是 gnocchi 的資源並沒有 clusetr_id，因此需要手動增加。
修改 /usr/lib/python2.7/dist-packages/ceilometer/gnocchi_client.py，在 server_group 的下一行增加 cluster_id resource type
resources_initial = {
"instance": {
"server_group": {"type": "string", "min_length": 0, "max_length": 255,
"required": False},
"cluster_id": {"type": "string", "min_length": 0, "max_length": 255,
"required": False},
},
resources_update_operations = [
{"desc": "add cluster_id to instance",
"type": "update_attribute_type",
"resource_type": "instance",
"data": [{
"op": "add",
"path": "/attributes/cluster_id",
"value": {"type": "string", "min_length": 0, "max_length": 255,
"required": False}
}]},修改 /usr/lib/python2.7/dist-packages/ceilometer/publisher/data/gnocchi_resources.yaml， 在 server_group: 下一行加入 cluster_id
- resource_type: instance
attributes:
server_group: resource_metadata.user_metadata.server_group
cluster_id: resource_metadata.user_metadata.cluster_id 刪除已編譯的 gnocchi_client.pyc
# rm /usr/lib/python2.7/dist-packages/ceilometer/gnocchi_client.pyc更新 ceilometer 和 gnocchi 資料庫
# gnocchi-upgrade
# ceilometer-upgrade如果不想修改程式碼 可以使用 gnocchi api 更新 resource
PATCH /v1/resource_type/my_custom_type HTTP/1.1
Content-Type: application/json-patch+json
[
{
"op": "add",
"path": "/attributes/cluster_id",
"value": {
"type": "string",
"min_length": 0,
"max_length": 255,
"required": false
}
}
]在 /etc/ceilometer/ceilometer.conf 增加
[DEFAULT]
reserved_metadata_keys = cluster_id重啟 ceilometer 服務 (controller)
# service ceilometer-agent-notification restart
# service ceilometer-agent-central restart重啟 ceilometer-agent-compute (compute)
# service ceilometer-agent-compute restart
此段官方好像修復了，應該不用改了
再來修改 aodh，senlin 的 VM scaling 是透過呼叫 webhook 的方式增加減少 VM，但是呼叫 webhook 時，不能送出有值的 body，而 aodh alarm 所觸發的 webhook 一定會送出含有資料的 body，之後 senlin 增加了功能，如果呼叫 scaling 的 webhook，要送出有值的 body ，必須要加入 header openstack-api-version = clustering 1.10，但是 aodh 的 alarm 所送出的 header 只有 content-type = application/json，因此需要修改程式碼。
修改 /usr/lib/python2.7/dist-packages/aodh/notifier/rest.py，在 headers[‘content-type’]下一行增加 header ‘openstack-api-version’
headers['content-type'] = 'application/json'
headers['openstack-api-version'] = 'clustering 1.10'刪除已編譯的 rest.pyc
# rm /usr/lib/python2.7/dist-packages/aodh/notifier/rest.pyc重啟 aodh 服務
# service apache2 restart
# service aodh-evaluator restart
# service aodh-notifier restart
# service aodh-listener restart檢查是否成功新增 gnocchi instance 的 resource type 裡的 cluster_id 屬性
openstack metric resource-type show instance
+-------------------------+-----------------------------------------------------------+
| Field | Value |
+-------------------------+-----------------------------------------------------------+
| attributes/cluster_id | max_length=255, min_length=0, required=False, type=string |
| attributes/created_at | required=False, type=datetime |
| attributes/deleted_at | required=False, type=datetime |
| attributes/display_name | max_length=255, min_length=0, required=True, type=string |
| attributes/flavor_id | max_length=255, min_length=0, required=True, type=string |
| attributes/flavor_name | max_length=255, min_length=0, required=True, type=string |
| attributes/host | max_length=255, min_length=0, required=True, type=string |
| attributes/image_ref | max_length=255, min_length=0, required=False, type=string |
| attributes/launched_at | required=False, type=datetime |
| attributes/server_group | max_length=255, min_length=0, required=False, type=string |
| name | instance |
| state | active |
+-------------------------+-----------------------------------------------------------+使用 Auto Scaling
建立 VM 模板，此模板為 scaling 的 VM，建立 server.yaml
type: os.nova.server
version: 1.0
properties:
name: cirros_server
flavor: m1.tiny
image: cirros-0.3.5-x86_64-disk
key_name: oskey
networks:
- network: private建立 profile ，也就是樣板
# openstack cluster profile create --spec-file server.yaml pserver
+------------+----------------------------------------------+
| Field | Value |
+------------+----------------------------------------------+
| created_at | 2019-02-19T07:08:10Z |
| domain_id | None |
| id | 3a3ad404-5676-4f9d-b424-a74b25abce88 |
| location | None |
| metadata | {} |
| name | pserver |
| project_id | e214ad5b451a4616a4689afb58e7dbc8 |
| spec | +------------+-----------------------------+ |
| | | property | value | |
| | +------------+-----------------------------+ |
| | | properties | { | |
| | | | "key_name": "mykey", | |
| | | | "flavor": "m1.tiny", | |
| | | | "networks": [| |
| | | | { | |
| | | | "network": "demo-net" | |
| | | | } | |
| | | | ], | |
| | | | "image": "cirros", | |
| | | | "name": "cirros_server" | |
| | | | } | |
| | | type | os.nova.server | |
| | | version | 1.0 | |
| | +------------+-----------------------------+ |
| type | os.nova.server-1.0 |
| updated_at | None |
| user_id | e26bd520e7044d78b8966c7f3ce9b364 |
+------------+----------------------------------------------+
建立 cluster，–desired-capacity 指定 cluster node 起始數量
# openstack cluster create --profile pserver --desired-capacity 1 --min-size 1 mycluster
+------------------+--------------------------------------+
| Field | Value |
+------------------+--------------------------------------+
| config | {} |
| created_at | None |
| data | {} |
| dependents | {} |
| desired_capacity | 1 |
| domain_id | None |
| id | 2682c9e0-0231-4506-8a69-a95bb764bcea |
| init_at | 2019-02-19T07:30:29Z |
| location | None |
| max_size | -1 |
| metadata | {} |
| min_size | 0 |
| name | mycluster |
| node_ids | |
| profile_id | 3a3ad404-5676-4f9d-b424-a74b25abce88 |
| profile_name | pserver |
| project_id | e214ad5b451a4616a4689afb58e7dbc8 |
| status | INIT |
| status_reason | Initializing |
| timeout | 3600 |
| updated_at | None |
| user_id | e26bd520e7044d78b8966c7f3ce9b364 |
+------------------+--------------------------------------+查看 cluster 資訊
# openstack cluster show mycluster
+------------------+--------------------------------------------------------------------------------+
| Field | Value |
+------------------+--------------------------------------------------------------------------------+
| config | {} |
| created_at | 2019-02-19T07:31:00Z |
| data | {} |
| dependents | {} |
| desired_capacity | 1 |
| domain_id | None |
| id | 2682c9e0-0231-4506-8a69-a95bb764bcea |
| init_at | 2019-02-19T07:30:29Z |
| location | None |
| max_size | -1 |
| metadata | {} |
| min_size | 0 |
| name | mycluster |
| node_ids | 27aab314-9d4a-4a3f-9545-788ec12bd5f9 |
| profile_id | 3a3ad404-5676-4f9d-b424-a74b25abce88 |
| profile_name | pserver |
| project_id | e214ad5b451a4616a4689afb58e7dbc8 |
| status | ACTIVE |
| status_reason | CLUSTER_CREATE: number of active nodes is equal or above desired_capacity (1). |
| timeout | 3600 |
| updated_at | 2019-02-19T07:31:00Z |
| user_id | e26bd520e7044d78b8966c7f3ce9b364 |
+------------------+--------------------------------------------------------------------------------+
將上述所得到的 cluster id 匯入環境變數
# export MYCLUSTER_ID=2682c9e0-0231-4506-8a69-a95bb764bcea建立 Receiver webhook，透過觸發 webhook，可以執行所設定的 action，Receiver 可以設定的 action 如下:
CLUSTER_SCALE_OUT
CLUSTER_SCALE_IN
CLUSTER_RESIZE
CLUSTER_CHECK
CLUSTER_UPDATE
CLUSTER_DELETE
CLUSTER_ADD_NODES
CLUSTER_DEL_NODES
NODE_CREATE
NODE_DELETE
NODE_UPDATE
NODE_CHECK
NODE_RECOVER
Auto scaling 需要 scale_out 和 sacle_in ，因此建立兩個 Receiver，count 是指觸發一次後要增加減少的 node 數量 建立 Receiver CLUSTER_SCALE_OUT
# openstack cluster receiver create --action CLUSTER_SCALE_OUT --params count=1 --cluster mycluster scale_out
+------------+-------------------------------------------------------------------------------------------------------------+
| Field | Value |
+------------+-------------------------------------------------------------------------------------------------------------+
| action | CLUSTER_SCALE_OUT |
| actor | { |
| | "trust_id": "1795bf3ee52a44f6bcf681144f15c4c3" |
| | } |
| channel | { |
| | "alarm_url": "http://10.50.2.4:8780/v1/webhooks/706eab3c-6269-409f-9675-abf14523de31/trigger?V=1&count=1" |
| | } |
| cluster_id | 2682c9e0-0231-4506-8a69-a95bb764bcea |
| created_at | 2019-02-19T07:40:22Z |
| domain_id | None |
| id | 706eab3c-6269-409f-9675-abf14523de31 |
| location | None |
| name | scale_out |
| params | { |
| | "count": "1" |
| | } |
| project_id | e214ad5b451a4616a4689afb58e7dbc8 |
| type | webhook |
| updated_at | None |
| user_id | e26bd520e7044d78b8966c7f3ce9b364 |
+------------+-------------------------------------------------------------------------------------------------------------+建立 Receiver CLUSTER_SCALE_IN
# openstack cluster receiver create --action CLUSTER_SCALE_IN --params count=1 --cluster mycluster scale_in
+------------+-------------------------------------------------------------------------------------------------------------+
| Field | Value |
+------------+-------------------------------------------------------------------------------------------------------------+
| action | CLUSTER_SCALE_IN |
| actor | { |
| | "trust_id": "1795bf3ee52a44f6bcf681144f15c4c3" |
| | } |
| channel | { |
| | "alarm_url": "http://10.50.2.5:8780/v1/webhooks/e8079cfd-2e21-4630-93f0-5dfed1c55299/trigger?V=1&count=1" |
| | } |
| cluster_id | 2682c9e0-0231-4506-8a69-a95bb764bcea |
| created_at | 2019-02-19T07:40:56Z |
| domain_id | None |
| id | e8079cfd-2e21-4630-93f0-5dfed1c55299 |
| location | None |
| name | scale_in |
| params | { |
| | "count": "1" |
| | } |
| project_id | e214ad5b451a4616a4689afb58e7dbc8 |
| type | webhook |
| updated_at | None |
| user_id | e26bd520e7044d78b8966c7f3ce9b364 |
+------------+-------------------------------------------------------------------------------------------------------------+
匯入環境變數 alarm_url，此 URL 為 webhook
# export ALRM_URLOUT="http://10.50.2.4:8780/v1/webhooks/706eab3c-6269-409f-9675-abf14523de31/trigger?V=1&count=1"
# export ALRM_URLIN="http://10.50.2.5:8780/v1/webhooks/e8079cfd-2e21-4630-93f0-5dfed1c55299/trigger?V=1&count=1"建立 aodh alarm，以下為參數設定
metric: 根據什麼發出 alarm，這裡選擇 cpu 使用率，cpu_util
alarm-action: alarm 時要觸發的 webhook，為上述的 alarm_url
query: query 出 VM 的 metadata 中相同 cluster_id 的 VM，並聚合所有的 metric，請填入 cluster_id
threshold: 閥值，當監測的量此值，會觸發 1 次 alarm，這裡設定 cpu 70%
comparison-operator: 跟 threshold 結合，gt 就是大於，lt 小於，範例 gt 就是大於 70
evaluation-periods: 週期，到達幾次定的 threshold，就會發出 alarm，此範例為到達 1 次 cpu 大於 70%，就發出 alarm
aggregation-method: 如何計算 query 出的 metric 值，這裡填入平均 mean， repeat-actions: 重複執行 alarm-action，當 alarm 持續發生時，是否重複觸發 alarm-action
建立 cpu-high 警示
# aodh alarm create \
--type gnocchi_aggregation_by_resources_threshold \
--name cpu-high \
--metric cpu_util \
--threshold 70 \
--comparison-operator gt \
--description 'instance running hot' \
--evaluation-periods 1 \
--aggregation-method mean \
--alarm-action $ALRM_URLOUT \
--granularity 60 \
--repeat-actions True \
--query '{"=": {"cluster_id": "2682c9e0-0231-4506-8a69-a95bb764bcea"}}' \
--resource-type instance
+---------------------------+-------------------------------------------------------------------------------------------------+
| Field | Value |
+---------------------------+-------------------------------------------------------------------------------------------------+
| aggregation_method | mean |
| alarm_actions | [u'http://10.50.2.4:8780/v1/webhooks/706eab3c-6269-409f-9675-abf14523de31/trigger?V=1&count=1'] |
| alarm_id | c541927c-2611-48a3-8e45-3bdcd4ccb533 |
| comparison_operator | gt |
| description | instance running hot |
| enabled | True |
| evaluation_periods | 1 |
| granularity | 60 |
| insufficient_data_actions | [] |
| metric | cpu_util |
| name | cpu-high |
| ok_actions | [] |
| project_id | e214ad5b451a4616a4689afb58e7dbc8 |
| query | {"=": {"cluster_id": "2682c9e0-0231-4506-8a69-a95bb764bcea"}} |
| repeat_actions | True |
| resource_type | instance |
| severity | low |
| state | insufficient data |
| state_reason | Not evaluated yet |
| state_timestamp | 2019-02-19T10:02:16.086730 |
| threshold | 70.0 |
| time_constraints | [] |
| timestamp | 2019-02-19T10:02:16.086730 |
| type | gnocchi_aggregation_by_resources_threshold |
| user_id | e26bd520e7044d78b8966c7f3ce9b364 |
+---------------------------+-------------------------------------------------------------------------------------------------+建立 cpu-low 警示
# aodh alarm create \
--type gnocchi_aggregation_by_resources_threshold \
--name cpu-low \
--metric cpu_util \
--threshold 30 \
--comparison-operator lt \
--description 'instance running cold' \
--evaluation-periods 1 \
--aggregation-method mean \
--alarm-action $ALRM_URLIN \
--granularity 60 \
--repeat-actions True \
--query '{"=": {"cluster_id": "2682c9e0-0231-4506-8a69-a95bb764bcea"}}' \
--resource-type instance
+---------------------------+-------------------------------------------------------------------------------------------------+
| Field | Value |
+---------------------------+-------------------------------------------------------------------------------------------------+
| aggregation_method | mean |
| alarm_actions | [u'http://10.50.2.5:8780/v1/webhooks/e8079cfd-2e21-4630-93f0-5dfed1c55299/trigger?V=1&count=1'] |
| alarm_id | 7b0e8f10-251c-42db-be40-f46a1e276faa |
| comparison_operator | lt |
| description | instance running cold |
| enabled | True |
| evaluation_periods | 1 |
| granularity | 60 |
| insufficient_data_actions | [] |
| metric | cpu_util |
| name | cpu-low |
| ok_actions | [] |
| project_id | e214ad5b451a4616a4689afb58e7dbc8 |
| query | {"=": {"cluster_id": "2682c9e0-0231-4506-8a69-a95bb764bcea"}} |
| repeat_actions | True |
| resource_type | instance |
| severity | low |
| state | insufficient data |
| state_reason | Not evaluated yet |
| state_timestamp | 2019-02-20T02:50:17.389596 |
| threshold | 30.0 |
| time_constraints | [] |
| timestamp | 2019-02-20T02:50:17.389596 |
| type | gnocchi_aggregation_by_resources_threshold |
| user_id | e26bd520e7044d78b8966c7f3ce9b364 |
+---------------------------+-------------------------------------------------------------------------------------------------+進入 VM，對 VM 做 CPU 壓力測試，此為 cirros 範例
$ cat /dev/zero > /dev/bull使用 openstack alarm 查看警示狀態
# watch openstack alarm list
+--------------------------------------+--------------------------------------------+----------+-------+----------+---------+
| alarm_id | type | name | state | severity | enabled |
+--------------------------------------+--------------------------------------------+----------+-------+----------+---------+
| 7b0e8f10-251c-42db-be40-f46a1e276faa | gnocchi_aggregation_by_resources_threshold | cpu-low | ok | low | True |
| c541927c-2611-48a3-8e45-3bdcd4ccb533 | gnocchi_aggregation_by_resources_threshold | cpu-high | alarm | low | True |
+--------------------------------------+--------------------------------------------+----------+-------+----------+---------+使用 openstack cluster 查看集群是否有擴展
# watch openstack cluster show
+------------------+------------------------------------------+
| Field | Value |
+------------------+------------------------------------------+
| config | {} |
| created_at | 2019-02-19T07:31:00Z |
| data | {} |
| dependents | {} |
| desired_capacity | 4 |
| domain_id | None |
| id | 2682c9e0-0231-4506-8a69-a95bb764bcea |
| init_at | 2019-02-19T07:30:29Z |
| location | None |
| max_size | -1 |
| metadata | {} |
| min_size | 0 |
| name | mycluster |
| node_ids | 2e23692b-388c-4fd6-b159-8398bf1a5688 |
| | 3fc73090-80d5-4e31-b3fc-15901c1d1cd1 |
| | c2ef243d-697c-476b-b74a-cdbb61f5c4b2 |
| | eb959317-5dc8-466f-a054-aaf75134875f |
| profile_id | 3a3ad404-5676-4f9d-b424-a74b25abce88 |
| profile_name | pserver |
| project_id | e214ad5b451a4616a4689afb58e7dbc8 |
| status | RESIZING |
| status_reason | Node node-Zb9FrKHm: Creation in progress |
| timeout | 3600 |
| updated_at | 2019-02-20T03:07:01Z |
| user_id | e26bd520e7044d78b8966c7f3ce9b364 |
+------------------+------------------------------------------+Last updated
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