环境说明

服务器	IP地址	服务
监控服务器	10.10.xxx.56	prometheus/grafana
k8s-vip	10.10.xxx.100	redis集群

将redis_exporter部署在监控服务器上，对各环境redis进行监控。此处以监控k8s平台的redis集群为例。

1. redis_exporter

创建redis_exporter目录，下边创建docker-compose.yml文件如下：

version: '2'
services:
  redis_exporter:
    image: harbocto.boe.com.cn/public/redis_exporter
    container_name: redis_exporter
    expose:
      - "9121"
    ports:
      - "9121:9121"
    restart: always
    command: ["--redis.addr","redis://10.10.xxx.100:30020","--redis.password","1W23lyc45j","redis://10.10.xxx.100:30022","--redis.password","1W23lyc45j","redis://10.10.xxx.100:30024","--redis.password","1W23lyc45j"]

【附】如果你要在k8s上启动，注意k8s和docker-compose中 command的对镜像中ENTRYPOINT的覆盖方式是不同的，k8s需要如下写：

         command: ["/redis_exporter"]
         args: ["--redis.addr","redis://10.10.xxx.100:30020","--redis.password","1W23lyc45j","redis://10.10.xxx.100:30022","--redis.password","1W23lyc45j","redis://10.10.xxx.100:30024","--redis.password","1W23lyc45j"]

启动

# docker-compose up -d

[root@monitor redis_exporter]# docker-compose ps
     Name                   Command               State           Ports
--------------------------------------------------------------------------------
redis_exporter   /redis_exporter --redis.ad ...   Up      0.0.0.0:9121->9121/tcp

查看 redis_exporter数据
如下图可见，exporter收集到了数据。

2. 配置prometheus

修改 prometheus.yml 文件，添加如下内容：

########################################
#             redis                    #
########################################
 - job_name: 'redis_exporter_targets'
   static_configs:
     - targets:
       - redis://10.10.xxx.100:30020
       - redis://10.10.xxx.100:30022
       - redis://10.10.xxx.100:30024

   metrics_path: /scrape
   relabel_configs:
     - source_labels: [__address__]
       target_label: __param_target
     - source_labels: [__param_target]
       target_label: instance
     - target_label: __address__
       replacement: 10.10.xxx.56:9121
 ## config for scraping the exporter itself
 - job_name: 'redis_exporter'
   static_configs:
     - targets:
       - 10.10.xxx.56:9121