Prometheus Service Discovery

How to perform static service discovery for Prometheus

当使用 prometheus_sd_method == ‘static’ 的静态文件服务发现模式时，Prometheus会使用静态文件进行服务发现，目标配置文件地址默认为 /etc/prometheus/targets/ 目录中的所有yml文件。

集中式配置

当 prometheus_sd_target 配置为batch 模式时，Pigsty会采用集中式配置管理Prometheus监控目标。

所有监控对象都定义于单一配置文件：/etc/prometheus/targets/all.yml 中。

#==============================================================#
# File      :   targets/all.yml
# Ctime     :   2021-02-18
# Mtime     :   2021-02-18
# Atime     :   2021-03-01 16:46
# Note      :   Managed by Ansible
# Desc      :   Prometheus Static Monitoring Targets Definition
# Path      :   /etc/prometheus/targets/all.yml
# Copyright (C) 2018-2021 Ruohang Feng
#==============================================================#

# static monitor targets, batch version

#======> pg-meta-1 [primary]
- labels: {cls: pg-meta, ins: pg-meta-1, ip: 10.10.10.10, role: primary, svc: pg-meta-primary}
  targets: [10.10.10.10:9630, 10.10.10.10:9100, 10.10.10.10:9631, 10.10.10.10:9101]

#======> pg-test-1 [primary]
- labels: {cls: pg-test, ins: pg-test-1, ip: 10.10.10.11, role: primary, svc: pg-test-primary}
  targets: [10.10.10.11:9630, 10.10.10.11:9100, 10.10.10.11:9631, 10.10.10.11:9101]

#======> pg-test-2 [replica]
- labels: {cls: pg-test, ins: pg-test-2, ip: 10.10.10.12, role: replica, svc: pg-test-replica}
  targets: [10.10.10.12:9630, 10.10.10.12:9100, 10.10.10.12:9631, 10.10.10.12:9101]

#======> pg-test-3 [replica]
- labels: {cls: pg-test, ins: pg-test-3, ip: 10.10.10.13, role: replica, svc: pg-test-replica}
  targets: [10.10.10.13:9630, 10.10.10.13:9100, 10.10.10.13:9631, 10.10.10.13:9101]

分立式配置

当 prometheus_sd_target 配置为single 模式时，Pigsty会采用分立式配置管理Prometheus监控目标。

每个监控实例，都拥有自己独占的单一配置文件：/etc/prometheus/targets/{{ pg_instance }}.yml 中。

以 pg-meta-1 实例为例，其配置文件位置为：/etc/prometheus/targets/pg-meta-1.yml，内容为：

# pg-meta-1 [primary]
- labels: {cls: pg-meta, ins: pg-meta-1, ip: 10.10.10.10, role: primary, svc: pg-meta-primary}
  targets: [10.10.10.10:9630, 10.10.10.10:9100, 10.10.10.10:9631, 10.10.10.10:9101]
Last modified 2021-03-28: update en docs (f994b54)