Prometheus 监控之 zookeeper

Git 项目地址：https://github.com/jiankunking/zookeeper_exporter
exporter 下载地址：https://github.com/carlpett/zookeeper_exporter/releases/download/v1.0.2/zookeeper_exporter
注意：export 适合 zookeeper3.4+
①下载 zookeeper_export
wget https://github.com/carlpett/zookeeper_exporter/releases/download/v1.0.2/zookeeper_exporter
②启动 zookeeper_export
nohup /usr/local/bin/zookeeper_exporter >>/dev/null 2>&1 &
③查看是否正常

④将 export 加入到 prometheus 服务端。

⑤登陆 grafana，导入模板；搜索 Zookeeper Exporer Overview 或者拷贝 pid 9236

zookeeper alter 监控参考如下：

groups:
- name: zookeeperStatsAlert
  rules:
  - alert: 堆积请求数过大
    expr: avg(zk_outstanding_requests) by (instance) > 10    for: 1m
    labels:      severity: critical
    annotations:
      summary: "Instance {{ $labels.instance }} "
      description: "积请求数过大"
  - alert: 阻塞中的 sync 过多
    expr: avg(zk_pending_syncs) by (instance) > 10
    for: 1m
    labels:
      severity: critical
    annotations:
      summary: "Instance {{ $labels.instance }} "
      description: "塞中的 sync 过多"
  - alert: 平均响应延迟过高
    expr: avg(zk_avg_latency) by (instance) > 10
    for: 1m
    labels:
      severity: critical
    annotations:
      summary: "Instance {{ $labels.instance }} "
      description: '平均响应延迟过高'
  - alert: 打开文件描述符数大于系统设定的大小
    expr: zk_open_file_descriptor_count > zk_max_file_descriptor_count * 0.85
    for: 1m
    labels:
      severity: critical
    annotations:
      summary: "Instance {{ $labels.instance }} "
      description: '打开文件描述符数大于系统设定的大小'
  - alert: zookeeper服务器宕机
    expr: zk_up == 0
    for: 1m
    labels:
      severity: critical
    annotations:
      summary: "Instance {{ $labels.instance }} "
      description: 'zookeeper服务器宕机'
  - alert: zk主节点丢失
    expr: absent(zk_server_state{state="leader"})  != 1
    for: 1m
    labels:
      severity: critical
    annotations:
      summary: "Instance {{ $labels.instance }} "
      description: 'zk主节点丢失'

需要指定阈值的指标

zk_outstanding_requests 堆积请求数
zk_pending_syncs 阻塞中的 sync 操作
zk_avg_latency 平均响应延迟
zk_open_file_descriptor_count 打开文件描述符数
zk_max_file_descriptor_count 最大文件描述符数
zk_up 1
zk_server_state 主从状态
zk_num_alive_connections 活跃连接数

source:https://hacpai.com/article/1575868724409