适用openGauss系列数据库的监控指标列表说明
每个数据库都有一套自己的监控指标列表，OG系列数据库也不例外，针对与数据库监控安装部署可以直接参考监控合集，此合集文章基本够用，如果不足欢迎留言。
OG exporter下地地址为：https://gitee.com/opengauss/opengauss-prometheus-exporter ,此exporter目前主要由恩墨刘斌同学维护。
default_all.yaml
grafana dashboard
配置说明
这里以查看数据库配置信息为例，对监控指标的关键字段进行解读，方便用户自定义监控指标。
pg_database:
name: pg_database
desc: openGauss Database size
query:
- name: pg_database
sql: |-
SELECT datname,
pg_database_size(pg_database.datname) as size_bytes,
age(datfrozenxid64) AS age,
datistemplate AS is_template,
datallowconn AS allow_conn,
datconnlimit AS conn_limit,
datfrozenxid::TEXT::BIGINT as frozen_xid
FROM pg_database
where datname NOT IN ('template0','template1');
version: '>=0.0.0'
timeout: 1
ttl: 60
status: enable
dbRole: ""
metrics:
- name: datname
description: Name of this database
usage: LABEL
- name: size_bytes
description: Disk space used by the database
usage: GAUGE
- name: age
description: database age calculated by age(datfrozenxid64)
usage: GAUGE
- name: is_template
description: 1 for template db and 0 for normal db
usage: GAUGE
- name: allow_conn
description: 1 allow connection and 0 does not allow
usage: GAUGE
- name: conn_limit
description: connection limit, -1 for no limit
usage: GAUGE
- name: frozen_xid
description: tuple with xmin below this will always be visable (until wrap around)
usage: GAUGE
public: true
