查看“Prometheus监控Redis集群”的源代码

[[category:ops]] [[category:container]]

=pre=
[[Monitoring with prometheus]]



Prometheus 监控 Redis cluster，其实套路都是一样的，使用 exporter。
exporter 负责采集指标，通过 http 暴露给 Prometheus 拉取。granafa 则通过这些指标绘图展示数据。Prometheus 收集的数据还会根据你设置的告警规则判断是否要发送给 Alertmanager， Alertmanager 则要判断是否要发出告警。

Alertmanager 告警分为三个阶段

    Inactive 触发告警的规则会被发送到这来。
    Pending 你设置的等待时间，即规则里面的 for
    Firing 发送告警到邮件、钉钉之类的

=* redis_exporter=

==** redis_exporter from binary ==
<pre>
解压而已  

#is me 如果不同一台机器 也是只跑一个 node  加上所以的IP on prometheus.yml就行了呢
./redis_exporter -redis.addr  192.168.10.193:7000 -redis.password 3passd123yui  -web.listen-address  192.168.10.193:9121

./redis_exporter -redis.addr  192.168.10.193:7000 -redis.password 3passd123yui  -web.listen-address  192.168.10.193:9121


nohup ./redis_exporter -redis.addr 172.18.11.139:7000  -redis.password xxxxxx  -web.listen-address 172.18.11.139:9121 > /dev/null 2>&1 &


-redis.addr string
-redis.password
nohup ./redis_exporter -redis.password xxxxx  &


# 这些看起来 监听内网IP 其它在外网 开了防火墙还是可以通的呢 

#启动文件
cat  /usr/lib/systemd/system/redis-exporter.service
[Unit]
Description=prometheus  redis  exporter
After=network.target

[Service]
Type=simple
Restart=on-failure
ExecStart=/data/mon/redis_exporter/redis_exporter \
-redis.addr 172.31.22.218:7000 \
-redis.password hellopasswD9923   \
-web.listen-address 172.31.22.218:9121


[Install]
WantedBy=multi-user.target


systemctl daemon-reload#记得加x
systemctl enable   redis-exporter.service
systemctl start   redis-exporter.service


https://github.com/oliver006/redis_exporter/releases/download/v1.5.3/redis_exporter-v1.5.3.linux-amd64.tar.gz

https://github.com/oliver006/redis_exporter/releases/
</pre>

==**ins redis_exporter  using docker==
https://hub.docker.com/r/oliver006/redis_exporter

==** prome conf==
<pre>
#这个成功的单机配置 记得要 '' 全部当str
  - job_name: 'redis'
    static_configs:
      - targets: ['192.168.11.125:9121']




#暂时可以在prome 出数据的redis cluster 
#scrape_configs:
  - job_name: 'redis_cluster'
    scrape_interval: 10s
    static_configs:
      #- targets: ['192.168.11.125:9121']
  ## config for the multiple Redis targets that the exporter will scrape
  #  - job_name: 'redis_exporter_targets'
  #  static_configs:
      - targets:
        - redis://192.168.10.193:7000
        - redis://192.168.10.193:7001
        - redis://192.168.10.193:7002
        - redis://192.168.10.193:7003
        - redis://192.168.10.193:7004
        - redis://192.168.10.193:7005
    metrics_path: /scrape
    relabel_configs:
      - source_labels: [__address__]
        target_label: __param_target
      - source_labels: [__param_target]
        target_label: instance
      - target_label: __address__
        replacement: 192.168.10.193:9121

http://192.168.10.144:9090/graph?g0.range_input=1h&g0.expr=redis_cluster_state&g0.tab=1

graph 输入下面的 命令 
redis_cluster_state
</pre>
=err=

<pre>
现在 外网能telnet 通 hello的 redis 端口  不过  prometheus  那里还是 0


记得要用 dos2unix 去格式化一下 不然配置很容易出错的  yml

0 err="error loading config from \"/etc/prometheus/prometheus.yml\": couldn't load configuration (--config.file=\"/etc/prometheus/prometheus.yml\"): parsing YAML file /etc/prometheus/prometheus.yml: yaml: line 47: did not find expected key"


</pre>
=* grafana  模板 =
 ~/prometheus/redis_mon.yml 

* 如果client  export  那边服务没起来 是跑不动 9090的 例如 昨天加的mysql 没跑  今天加redis 完全打不开


* redis 单机 版本

图形garafa 还不行 有空再看吧 
https://yq.aliyun.com/articles/251478
=*  see also=
https://www.cnblogs.com/fsckzy/p/12053604.html  Prometheus 监控Redis的正确姿势(redis集群)