prometheus监控ES【转】

prometheus监控es，同样采用exporter的方案。

项目地址：

elasticsearch_exporter：https://github.com/justwatchcom/elasticsearch_exporter

默认端口 9114

1、安装部署

【1.0】封装成系统服务、一键部署

前提，把二进制包复制过来放到当前目录

vim es_exporter_install.sh

#!/bin/bash
init(){
    es_path_config=`ps -ef|grep elastic|grep "Des.path.conf"|sed 's# #\n#g'|grep "Des.path.conf"|awk -F'=' '{print $2}'`/
    configfile=elasticsearch.yml
    ip=`cat ${es_path_config}${configfile}|grep network.host|awk -F":" '{print $2}'|sed 's/[[:space:]]//g'`
    port=`cat ${es_path_config}${configfile}|grep http.port|awk -F":" '{print $2}'|sed 's/[[:space:]]//g'`
    if [ ! "$ip" -o ! "$port" ];then
        echo "init is error,can't get the es's ip and port!"
        exit 1
    fi
    if [ $ip == '0.0.0.0' ];then
    ip=127.0.0.1
    fi
    tar -zxf elasticsearch_exporter-1.1.0.linux-amd64.tar.gz
    mv elasticsearch_exporter-1.1.0.linux-amd64 /usr/local/elasticsearch_exporter
    groupadd prometheus
    useradd -g prometheus -m -d /var/lib/prometheus -s /sbin/nologin prometheus
    chown -R prometheus.prometheus /usr/local/elasticsearch_exporter

    
}



run(){
if [ `uname -a |grep el7|wc -l` -eq 1 ];then
cat << eof >/lib/systemd/system/es_exporter.service
[Unit]
Description=The es_exporter
After=network.target

[Service]
PrivateTmp=true
Type=simple
User=prometheus
ExecStart=/usr/local/elasticsearch_exporter/elasticsearch_exporter --es.uri=http://${ip}:${port} 
Restart=on-failure
ExecStop=/bin/kill -s QUIT $MAINPID
[Install]
WantedBy=multi-user.target
eof

    systemctl daemon-reload
    systemctl start es_exporter
    systemctl enable es_exporter
    elif [ `uname -a |grep el6|wc -l` -eq 1 ];then
cat << eof >/etc/init.d/es_exporter
#!/bin/bash
# chkconfig: 2345 10 90
# description: es's exporter
touch /var/log/es_exporter.log
chown prometheus.prometheus /var/log/es_exporter.log
es_path_config=`ps -ef|grep elastic|grep "Des.path.conf"|sed 's# #\n#g'|grep "Des.path.conf"|awk -F'=' '{print $2}'`/
configfile=elasticsearch.yml
ip=`cat ${es_path_config}${configfile}|grep network.host|awk -F":" '{print $2}'|sed 's/[[:space:]]//g'`
port=`cat ${es_path_config}${configfile}|grep http.port|awk -F":" '{print $2}'|sed 's/[[:space:]]//g'`
if [ $ip == '0.0.0.0' ];then
ip=127.0.0.1
fi
su prometheus -s /bin/bash -c "/usr/local/elasticsearch_exporter/elasticsearch_exporter --es.uri=http://${ip}:${port} &"  >> /var/log/es_exporter.log
eof
    chown prometheus.prometheus /etc/init.d/es_exporter
    chmod +x /etc/init.d/es_exporter
    chkconfig --add es_exporter
    chkconfig --level 3 es_exporter on
    service es_exporter start

else
    echo "your os not rel7/rel6,operator fail!"
fi
}
main(){
init
run
}
main
ps -ef|grep elasticsearch_exporter

sh es_exporter_install.sh

【1.2】简便一键部署、脚本方式

前提：把ES执行命令直接拿来放到一起

vim install_es.sh

#!/bin/bash

mv elasticsearch_exporter /bin/elasticsearch_exporter
chmod +x /bin/elasticsearch_exporter
es_path_config=`ps -ef|grep elastic|grep "Des.path.conf"|sed 's# #\n#g'|grep "Des.path.conf"|awk -F'=' '{print $2}'`/
configfile=elasticsearch.yml
ip=`cat ${es_path_config}${configfile}|grep network.host|awk -F":" '{print $2}'|sed 's/[[:space:]]//g'`
port=`cat ${es_path_config}${configfile}|grep http.port|awk -F":" '{print $2}'|sed 's/[[:space:]]//g'`
if [ ! "$ip" -o ! "$port" ];then
    echo 'init is error,can't get the es's ip and port!'
    exit 1
fi
if [ $ip == '0.0.0.0' ];then
ip=127.0.0.1
fi

echo "nohup /bin/elasticsearch_exporter --es.uri="http://${ip}:${port}" --web.listen-address="0.0.0.0:9114" >>/var/log/es_exporter.log 2>&1 & "
nohup /bin/elasticsearch_exporter --es.uri="http://${ip}:${port}" --web.listen-address="0.0.0.0:9114" >> /var/log/es_exporter.log 2>&1 &  
echo "nohup /bin/elasticsearch_exporter --es.uri="http://${ip}:${port}" --web.listen-address="0.0.0.0:9114" >>/var/log/es_exporter.log 2>&1 &  " >>/etc/rc.local
ps -ef|grep elasticsearch_exporter

【1.2】详细步骤

接着分别在如上三台主机上进行如下配置：

wget https://github.com/justwatchcom/elasticsearch_exporter/releases/download/v1.1.0/elasticsearch_exporter-1.1.0.linux-amd64.tar.gz
tar -zxf elasticsearch_exporter-1.1.0.linux-amd64.tar.gz
mv elasticsearch_exporter-1.1.0.linux-amd64 /usr/local/elasticsearch_exporter

创建用户等

groupadd prometheus
useradd -g prometheus -m -d /var/lib/prometheus -s /sbin/nologin prometheus
chown -R prometheus.prometheus /usr/local/elasticsearch_exporter

启动监控客户端：

nohup ./elasticsearch_exporter --web.listen-address ":9114"  --es.uri http://192.168.75.21:9200 &

使用systemd管理：

cat << eof >>/lib/systemd/system/es_exporter.service
[Unit]
Description=The es_exporter
After=network.target

[Service]
Type=simple
User=prometheus
ExecStart=/usr/local/elasticsearch_exporter/elasticsearch_exporter 
Restart=on-failure
ExecStop=/bin/kill -s QUIT $MAINPID

[Install] 
WantedBy=multi-user.target 
eof

启动：

systemctl daemon-reload
systemctl start es_exporter
systemctl enable es_exporter

查看metrics：

curl 127.0.0.1:9114/metrics

2、配置 prometheus.yml 添加监控目标

vim /usr/local/prometheus/prometheus.yml

  - job_name: 'elasticsearch'
    scrape_interval: 60s
    scrape_timeout:  30s
    metrics_path: "/metrics"
    static_configs:
    - targets: ['192.168.75.21:9308']
      labels:
       service: elasticsearch

重启服务。

systemctl restart prometheus

或者通过命令热加载：

curl  -XPOST localhost:9090/-/reload

3、配置 Grafana 的模板

模板通过json文件进行导入，文件就在解压的包内。

参考地址：https://shenshengkun.github.io/posts/550bdf86.html

或者通过如下ID进行导入：2322以及其他。

4、开启认证的启动方式

如果es开启了认证，那么启动的时候需要将用户名密码加载进去：

elasticsearch_exporter --web.listen-address ":9308"  --es.uri http://username:password@192.168.75.21:9200 &

其中使用的是monitoring的用户密码。

当然，除去这种命令行的启动方式之外，还可以像上边一样，基于systemd进行管理，只需将认证的参数信息写入到如下内容当中：

参考网址：https://github.com/justwatchcom/elasticsearch_exporter

cat /etc/default/elasticsearch_exporter

[Unit]
Description=The es_exporter
After=network.target

[Service]
Type=simple
User=prometheus
ExecStart=/usr/local/elasticsearch_exporter/elasticsearch_exporter --web.listen-address ":9308" --es.uri=http://username:password@192.168.75.21:9200
Restart=on-failure

[Install]
WantedBy=multi-user.target

【5】【最佳实践】es_alert.yml

groups:
- name: ES告警
  rules:
  - alert: ES-集群状态变红
    expr: elasticsearch_cluster_health_status{color="red"}==1
    for: 1m
    labels:
      severity: warning 
    annotations:
      description: "主/副本分片分配有误,该问题发生在集群：{{ $labels.cluster }}"    

  - alert: ES-集群状态变黄
    expr: elasticsearch_cluster_health_status{color="yellow"}==1 
    for: 1m
    labels:
      severity: warning
    annotations:
      description: "主/副本分片分配有误,该问题发生在集群：{{ $labels.cluster }}."    

  - alert: ES-JVM堆内存使用过高
    expr: round(elasticsearch_jvm_memory_used_bytes{area="heap"} / elasticsearch_jvm_memory_max_bytes{area="heap"}*100,0.01)>85
    for: 1m
    labels:
      severity: warning
    annotations:
      description: "JVM堆内存使用率超过80%\n当前:{{ $value }}"

  - alert: ES-集群健康状态获取失败
    expr: elasticsearch_cluster_health_up!=1
    for: 1m
    labels:
      severity: warning
    annotations:
      description: "该ES节点，获取集群监控状态失败 in cluster:[ {{ $labels.cluster }} ]"

  - alert: ES-太少节点运行
    expr: elasticsearch_cluster_health_number_of_nodes < 5
    for: 1m
    labels:
      severity: warning
    annotations:
      description: "ES集群运行的节点<5个(total 7) in cluster:[ {{ $labels.cluster }} ]\n当前运行节点个数:{{ $value }}"

  - alert: ES-GC平均执行次数过多
    expr: rate(elasticsearch_jvm_gc_collection_seconds_count{}[5m])>5
    for: 1m
    labels:
      severity: warning
    annotations:
      description: "JVM GC 1m内平均执行次数>5/s in cluster:[ {{ $labels.cluster }} ]\n当前：{{ $value }}/s"

  - alert: ES-GC平均运行时间过长
    expr: round((node_filesystem_size_bytes{fstype=~"ext.?|xfs"} - node_filesystem_free_bytes{fstype=~"ext.?|xfs"}) * 100 / (node_filesystem_avail_bytes{fstype=~"ext.?|xfs"} + (node_filesystem_size_bytes{fstype=~"ext.?|xfs"} - node_filesystem_free_bytes{fstype=~"ext.?|xfs"})),0.1) > 90
    for: 1m
    labels:
      severity: warning
    annotations:
      description: "ES 1m 内平均运行时间>0.3/s in cluster:[ {{ $labels.cluster }} ]\n当前：{{ $value }}/s"

  - alert: ES-JSON解析失败
    expr: elasticsearch_cluster_health_json_parse_failures>0
    for: 5m
    labels:
      severity: warning
    annotations:
      description: "ES节点解析json失败数 > 0 in cluster:[ {{ $labels.cluster }} ]\n当前：{{ $value }}"

  - alert: ES-断路器触发
    expr: rate(elasticsearch_breakers_tripped{}[5m])>0
    for: 1m
    labels:
      severity: warning
    annotations:
      description: "ES 断路器触发数 in cluster:[ {{ $labels.cluster }} ]> 0\n当前：{{ $value }}"
      
  - alert: ES-等待进程过多
    expr: elasticsearch_cluster_health_number_of_pending_tasks>10
    for: 1m
    labels:
      severity: warning
    annotations:
      description: "ES pending_tasks in cluster:[ {{ $labels.cluster }} ] > 10\n当前：{{ $value }}"      
      
  - alert: ES-增加集群节点
    expr: increase(elasticsearch_cluster_health_number_of_nodes[1m]) > 0
    for: 1s
    labels:
      severity: warning
    annotations:
      description: "ES-增加集群节点 in cluster:[ {{ $labels.cluster }} ]\n增加个数：{{ $value }}" 
      
  - alert: ES-减少集群节点
    expr: increase(elasticsearch_cluster_health_number_of_nodes[1m]) > 0
    for: 1s
    labels:
      severity: warning
    annotations:
      description: "ES-减少集群节点 in cluster:[ {{ $labels.cluster }} ]\n减少个数：{{ $value }}"

【6】【最佳实践】grafana模板

模版：链接:https://pan.baidu.com/s/1mAtVhko18gD4LxdSkuCGEg 密码:3mtd

【参考文档】

prometheus 监控 ES：https://blog.csdn.net/aa1215018028/article/details/87003907?utm_medium=distribute.pc_relevant.none-task-blog-2~default~BlogCommendFromMachineLearnPai2~default-1.control&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2~default~BlogCommendFromMachineLearnPai2~default-1.control

基本安装：转自：https://www.cnblogs.com/fat-girl-spring/p/13143603.html

posted @ 2021-05-14 17:36 郭大侠1 阅读(1091) 评论(0) 编辑收藏举报

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