Prometheus监控手册

OpsAny支持集成Prometheus监控，社区版可以手工安装Exporter，进行监控。

Prometheus监控MySQL

1.部署MySQL Exporter

[root@dev ~]# cd /usr/local/src
[root@dev src]# wget https://github.com/prometheus/mysqld_exporter/releases/download/v0.13.0/mysqld_exporter-0.13.0.linux-amd64.tar.gz
[root@dev src]# tar zxf mysqld_exporter-0.13.0.linux-amd64.tar.gz
[root@dev src]# mv mysqld_exporter-0.13.0.linux-amd64 /usr/local/
[root@dev src]# ln -s /usr/local/mysqld_exporter-0.13.0.linux-amd64/ /usr/local/mysqld_exporter

2.配置系统服务

[root@dev src]# vim /usr/lib/systemd/system/mysql_exporter.service
[Unit]
Description=https://prometheus.io

[Service]
Restart=on-failure
ExecStart=/usr/local/mysqld_exporter/mysqld_exporter --config.my-cnf=/usr/local/mysqld_exporter/.my.cnf

[Install]
WantedBy=multi-user.target

3.请按照以下步骤配置MySQL监控

• 登录到受监控的MySQL中

[root@dev ~]# mysql -u root -p

• 创建MySQL监控账户并授权

MariaDB [(none)]> CREATE USER 'opsany_monitor'@'localhost' IDENTIFIED BY 'OpsAny@2020';
MariaDB [(none)]> GRANT PROCESS, REPLICATION CLIENT, SELECT ON *.* TO 'opsany_monitor'@'localhost';

• 配置MySQL监控账户

[root@dev ~]# vim /usr/local/mysqld_exporter/.my.cnf
[client]
user=opsany_monitor
password=OpsAny@2020

4.启动监控插件

systemctl daemon-reload
systemctl restart mysql_exporter.service

5.测试运行

curl http://127.0.0.1:9104/metrics

测试没有问题，可以修改Prometheus配置去添加target。

Prometheus监控Redis

1.部署Redis Exporter

• 下载并部署Redis Exporter

[root@dev ~]# cd /usr/local/src
[root@dev src]# wget https://github.com/oliver006/redis_exporter/releases/download/v1.25.0/redis_exporter-v1.25.0.linux-amd64.tar.gz
[root@dev src]# tar zxf redis_exporter-v1.25.0.linux-amd64.tar.gz
[root@dev src]# mv redis_exporter-v1.25.0.linux-amd64 /usr/local/
[root@dev src]# ln -s /usr/local/redis_exporter-v1.25.0.linux-amd64/ /usr/local/redis_exporter

• 启动参数介绍

启动参数

-redis.addr string：Redis实例的地址，可以使一个或者多个，多个节点使用逗号分隔，默认为 "redis://localhost:6379"
-redis.password string：Redis实例的密码       
-web.listen-address string：服务监听的地址，默认为 0.0.0.0:9121

2.启动Redis Exporter

• 创建启动用户prometheus

[root@dev-node0 ~]# groupadd prometheus
[root@dev-node0 ~]# useradd -g prometheus -m -d /var/lib/prometheus -s /sbin/nologin prometheus
[root@dev-node0 ~]# chown -R prometheus:prometheus /usr/local/redis_exporter

• 设置Systemd配置

[root@dev-node0 ~]# cat > /usr/lib/systemd/system/redis_exporter.service  <<EOF
[Unit]
Description=redis_exporter
After=network.target
[Service]
Type=simple
User=prometheus
ExecStart=/usr/local/redis_exporter/redis_exporter -redis.addr 127.0.0.1:6379  -redis.password 123456 -web.listen-address 0.0.0.0:9121
Restart=on-failure
[Install]
WantedBy=multi-user.target
EOF

3.启动Redis Exporter

[root@dev-node0 ~]# systemctl start redis_exporter
[root@dev-node0 ~]# systemctl enable redis_exporter

测试访问

curl http://127.0.0.1:9121/metrics

Prometheus监控MongoDB

官方地址：https://github.com/percona/mongodb_exporter

1.下载并部署Exporter

[root@dev-node0 ~]# cd /usr/local/src
[root@dev-node0 src]# wget https://github.com/percona/mongodb_exporter/releases/download/v0.34.0/mongodb_exporter-0.34.0.linux-amd64.tar.gz
[root@dev-node0 src]# tar zxf mongodb_exporter-0.34.0.linux-amd64.tar.gz
[root@dev-node0 src]# mv mongodb_exporter-0.34.0.linux-amd64 /usr/local/
[root@dev-node0 src]# ln -s /usr/local/mongodb_exporter-0.34.0.linux-amd64/ /usr/local/mongodb_exporter

2.启动MongoDB Exporter

• 创建启动用户prometheus

[root@dev-node0 ~]# groupadd prometheus
[root@dev-node0 ~]# useradd -g prometheus -m -d /var/lib/prometheus -s /sbin/nologin prometheus
[root@dev-node0 ~]# chown -R prometheus:prometheus /usr/local/mongodb_exporter

• 创建MongoDB监控用户并授权

use admin
db.createUser({ 
    user: "prometheus",
    pwd: "prometheus",
    roles: [
        { role: "read", db: "admin" },
        { role: "readAnyDatabase", db: "admin" },
        { role: "clusterMonitor", db: "admin" }
    ]
});

• 设置Systemd配置

[root@dev-node0 ~]# cat > /usr/lib/systemd/system/mongodb_exporter.service  <<EOF
[Unit]
Description=mongodb_exporter
After=network.target
[Service]
Type=simple
User=prometheus
ExecStart=/usr/local/mongodb_exporter/mongodb_exporter --mongodb.uri=mongodb://prometheus:prometheus@127.0.0.1:27017/admin --collect-all --collector.topmetrics --collector.indexstats --collector.dbstats --web.listen-address=":9216"
Restart=on-failure
[Install]
WantedBy=multi-user.target
EOF

3.启动MongoDB Exporter

[root@dev-node0 ~]# systemctl start mongodb_exporter
[root@dev-node0 ~]# systemctl enable mongodb_exporter

测试访问

curl http://127.0.0.1:9216/metrics

Prometheus监控Elasticsearch

Prometheus社区提供了Elasticsearch监控的Exporter，地址如下：

• 官网地址：https://github.com/prometheus-community/elasticsearch_exporter
• 下载地址：https://github.com/prometheus-community/elasticsearch_exporter/releases

1.部署Elasticsearch Exporter

• 下载并部署Elasticsearch Exporter

[root@dev ~]# cd /usr/local/src
[root@dev src]# wget https://opsany-saas.oss-cn-beijing.aliyuncs.com/exporter/elasticsearch_exporter-1.5.0.linux-amd64.tar.gz
[root@dev src]# tar zxf elasticsearch_exporter-1.5.0.linux-amd64.tar.gz
[root@dev src]# mv elasticsearch_exporter-1.5.0.linux-amd64 /usr/local/
[root@dev src]# ln -s /usr/local/elasticsearch_exporter-1.5.0.linux-amd64/ /usr/local/elasticsearch_exporter

2.设置Elasticsearch Exporter

• 创建启动用户prometheus

[root@dev-node0 ~]# groupadd prometheus
[root@dev-node0 ~]# useradd -g prometheus -m -d /var/lib/prometheus -s /sbin/nologin prometheus
[root@dev-node0 ~]# chown -R prometheus:prometheus /usr/local/elasticsearch_exporter

• 设置Systemd配置

[root@dev-node0 ~]# cat > /usr/lib/systemd/system/elasticsearch_exporter.service  <<EOF
[Unit]
Description=elasticsearch_exporter
After=network.target
[Service]
Type=simple
User=prometheus
ExecStart=/usr/local/elasticsearch_exporter/elasticsearch_exporter --web.listen-address 0.0.0.0:9114 --es.uri http://elastic@OpsAny@2023@127.0.0.1:9200 --es.all --es.indices --es.cluster_settings --es.indices_settings --es.shards --es.snapshots
Restart=on-failure
[Install]
WantedBy=multi-user.target
EOF

3.启动Elasticsearch Exporter

[root@dev-node0 ~]# systemctl daemon-reload
[root@dev-node0 ~]# systemctl start elasticsearch_exporter
[root@dev-node0 ~]# systemctl enable elasticsearch_exporter

测试访问

curl http://127.0.0.1:9114/metrics

4.添加Grafana Dashboard

• 官方提供的：https://github.com/prometheus-community/elasticsearch_exporter/blob/master/examples/grafana/dashboard.json

Prometheus监控RabbitMQ

使用Prometheus监控RabbitMQ有两种方式：

• RabbitMQ官方提供了Prometheus监控的插件 https://www.rabbitmq.com/prometheus.html

使用RabbitMQ自带的监控插件

1. 启用官方自带的监控插件

# 启用插件
rabbitmq-plugins enable rabbitmq_prometheus

# 测试访问
curl -s localhost:15692/metrics | head -n 3

使用独立的RabbitMQ Exporter

1.部署Elasticsearch Exporter

• 下载并部署Elasticsearch Exporter

[root@dev ~]# cd /usr/local/src
[root@dev src]# wget https://opsany-saas.oss-cn-beijing.aliyuncs.com/exporter/elasticsearch_exporter-1.5.0.linux-amd64.tar.gz
[root@dev src]# tar zxf elasticsearch_exporter-1.5.0.linux-amd64.tar.gz
[root@dev src]# mv elasticsearch_exporter-1.5.0.linux-amd64 /usr/local/
[root@dev src]# ln -s /usr/local/elasticsearch_exporter-1.5.0.linux-amd64/ /usr/local/elasticsearch_exporter

2.设置Elasticsearch Exporter

• 创建启动用户prometheus

[root@dev-node0 ~]# groupadd prometheus
[root@dev-node0 ~]# useradd -g prometheus -m -d /var/lib/prometheus -s /sbin/nologin prometheus
[root@dev-node0 ~]# chown -R prometheus:prometheus /usr/local/elasticsearch_exporter

• 设置Systemd配置

[root@dev-node0 ~]# cat > /usr/lib/systemd/system/elasticsearch_exporter.service  <<EOF
[Unit]
Description=elasticsearch_exporter
After=network.target
[Service]
Type=simple
User=prometheus
ExecStart=/usr/local/elasticsearch_exporter/elasticsearch_exporter --web.listen-address 0.0.0.0:9114 --es.uri http://elastic@OpsAny@2023@127.0.0.1:9200 --es.all --es.indices --es.cluster_settings --es.indices_settings --es.shards --es.snapshots
Restart=on-failure
[Install]
WantedBy=multi-user.target
EOF

3.启动Elasticsearch Exporter

[root@dev-node0 ~]# systemctl daemon-reload
[root@dev-node0 ~]# systemctl start elasticsearch_exporter
[root@dev-node0 ~]# systemctl enable elasticsearch_exporter

测试访问

curl http://127.0.0.1:9114/metrics

添加Grafana Dashboard

• 官方提供的：https://github.com/prometheus-community/elasticsearch_exporter/blob/master/examples/grafana/dashboard.json