OpenStack组件安装配置测试之：Aodh

运维扫盲人 2021-06-12

1134

一、创建database

CREATE DATABASE aodh;
GRANT ALL PRIVILEGES ON aodh.* TO 'aodh'@'localhost' IDENTIFIED BY 'AODH_DBPASS';
GRANT ALL PRIVILEGES ON aodh.* TO 'aodh'@'%' IDENTIFIED BY 'AODH_DBPASS';

二、添加用户

openstack user create --domain default --password-prompt aodh
openstack role add --project service --user aodh admin

三、创建service

openstack service create --name aodh --description "Telemetry" alarming

四、添加endpoint

openstack endpoint create --region RegionOne alarming public http://controller:8042
openstack endpoint create --region RegionOne alarming internal http://controller:8042
openstack endpoint create --region RegionOne alarming admin http://controller:8042

五、部署服务

5.1 安装服务

apt-get install aodh-api aodh-evaluator aodh-notifier aodh-listener aodh-expirer python3-aodhclient

5.2 配置文件

root@controller-01:~# cat etc/aodh/aodh.conf | egrep -v "^$|^#"
[DEFAULT]
transport_url = rabbit://openstack:RABBIT_PASS@controller
auth_strategy = keystone
log_dir = var/log/aodh
[api]
[coordination]
[cors]
[database]
connection = mysql+pymysql://aodh:AODH_DBPASS@controller/aodh
[evaluator]
[healthcheck]
[keystone_authtoken]
www_authenticate_uri = http://controller:5000
auth_url = http://controller:5000
memcached_servers = controller:11211
auth_type = password
project_domain_id = default
user_domain_id = default
project_name = service
username = aodh
password = AODH
service_token_roles_required = true
[listener]
[notifier]
[oslo_messaging_amqp]
[oslo_messaging_kafka]
[oslo_messaging_notifications]
[oslo_messaging_rabbit]
[oslo_middleware]
[oslo_policy]
[service_credentials]
auth_type = password
auth_url = http://controller:5000/v3
project_domain_id = default
user_domain_id = default
project_name = service
username = aodh
password = AODH
interface = internalURL
region_name = RegionOne
[service_types]

5.3 启动服务

service aodh-api restart
service aodh-evaluator restart
service aodh-notifier restart
service aodh-listener restart

TIPs：openstack stein版本aodh组件存在bug，apt安装服务后无法自动生成aodh.service文件，需要手动添加；且/usr/bin/aodh-api程序默认监听8000端口，为了与catalog端口一致，修改为8042端口。

root@controller-01:~# cat lib/systemd/system/aodh-api.service 
[Unit]
Description=OpenStack Alarm API service
After=syslog.target network.target


[Service]
Type=simple
User=aodh
ExecStart=/usr/bin/aodh-api --port 8042 -- --logfile var/log/aodh/api.log
#ExecStart=/usr/bin/aodh-api -- --logfile var/log/aodh/api.log
Restart=on-failure


[Install]
WantedBy=multi-user.target

5.4 生成数据表

aodh-dbsync

六、排错

6.1 无法加载程序为python module

2021-03-10 15:07:27.800284 mod_wsgi (pid=11385): Target WSGI script '/usr/share/aodh/app.wsgi' cannot be loaded as Python module.

6.2 解决办法

该问题是由于mod-wsgi与python版本不匹配造成的。

apt-get remove libapache2-mod-python libapache2-mod-wsgi 
apt-get install libapache2-mod-wsgi-py3

TIPs：卸载完libapache2-mod-python后会导致keystone与openstack-dashboard也被卸载，重新安装即可。

七、验证

root@controller-01:~# aodh capabilities list
+---------------+----------------------------------------------------------------------------------------------------------------------------------------+
| Field         | Value                                                                                                                                  |
+---------------+----------------------------------------------------------------------------------------------------------------------------------------+
| alarm_storage | {'storage:production_ready': True}                                                                                                     |
| api           | {'alarms:history:query:complex': True, 'alarms:history:query:simple': True, 'alarms:query:complex': True, 'alarms:query:simple': True} |
+---------------+----------------------------------------------------------------------------------------------------------------------------------------+
root@controller-01:~# aodh alarm list

八、添加告警规则

https://docs.openstack.org/aodh/latest/admin/telemetry-alarms.html

8.1 添加instance类型资源利用率告警

root@controller-01:~# aodh alarm create \
  --name cpu_hi \
  --type gnocchi_resources_threshold \
  --description 'instance running hot' \
  --metric cpu_util \
  --threshold 1.0 \
  --comparison-operator gt \
  --aggregation-method mean \
  --granularity 60 \
  --evaluation-periods 3 \
  --alarm-action 'log://' \
  --resource-id 6583b3b0-96fd-45fa-bd75-fa7b0ae389e3 \
  --resource-type instance

root@controller-01:~# aodh alarm list
+--------------------------------------+-----------------------------+--------+-------+----------+---------+
| alarm_id                             | type                        | name   | state | severity | enabled |
+--------------------------------------+-----------------------------+--------+-------+----------+---------+
| c5fd0a6e-b389-414e-826c-e830c9448261 | gnocchi_resources_threshold | cpu_hi | ok    | low      | True    |
+--------------------------------------+-----------------------------+--------+-------+----------+---------+

TIPs：insufficient表示尚未通过该告警规则的苹果周期，无法判定是否告警。

8.2 更新alarm的告警阈值为75%

root@controller-01:~# aodh alarm update 566ef2f3-3302-4244-8b11-e49888fa732f --threshold 75

8.3 设定alarm告警规则状态

root@controller-01:~# aodh  alarm state get 566ef2f3-3302-4244-8b11-e49888fa732f
+-------+-------------------+
| Field | Value             |
+-------+-------------------+
| state | ok                |
+-------+-------------------+

8.4 查看alarm告警规则告警历史

aodh alarm-history show c5fd0a6e-b389-414e-826c-e830c9448261
+----------------------------+------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+--------------------------------------+
| timestamp                  | type             | detail                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | event_id                             |
+----------------------------+------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+--------------------------------------+
| 2021-03-22T10:04:34.355141 | state transition | {"transition_reason": "aggregation mean does not exist for metric cpu of resource f4bf417d-c2cc-4e8f-be65-f2e4e4f13d11", "state": "insufficient data"}                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | 412bc50f-342e-4b14-beda-0bf62b27cf53 |
| 2021-03-22T10:03:40.313080 | state transition | {"state": "ok", "state_reason": "Manually set via API"}                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | ae4d7b6d-9e15-42df-96a0-5e3833b09bf1 |
| 2021-03-22T09:51:51.297369 | creation         | {"state_reason": "Not evaluated yet", "user_id": "1d51703e805548d99cb35b0c3fb83a58", "name": "cpu_hi", "state": "insufficient data", "timestamp": "2021-03-22T09:51:51.297369", "description": "instance running hot", "enabled": true, "state_timestamp": "2021-03-22T09:51:51.297369", "rule": {"evaluation_periods": 3, "metric": "cpu", "resource_id": "f4bf417d-c2cc-4e8f-be65-f2e4e4f13d11", "aggregation_method": "mean", "granularity": 10, "threshold": 1.0, "comparison_operator": "gt", "resource_type": "instance"}, "alarm_id": "c5fd0a6e-b389-414e-826c-e830c9448261", "time_constraints": [], "insufficient_data_actions": [], "repeat_actions": false, "ok_actions": [], "project_id": "15b1010426194e309cd8f3de6bf63e1a", "type": "gnocchi_resources_threshold", "alarm_actions": ["log://"], "severity": "low"} | 8afa9dd9-8e9c-42fe-a867-d3e87c91e4fa |
+----------------------------+------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+--------------------------------------+
+----------------------------+-------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+--------------------------------------+

数据库

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OpenStack组件安装配置测试之：Aodh

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