Prometheus监控MongoDB数据库

article/2025/10/26 3:30:02

监控环境：Prometheus

数据库：MongoDB 3.4.6 集群，3个节点

监控工具：mongodb_exporter

我这个模板是自己二次开发的。使用mongodb_exporter 监控阿里云的MongoDB数据库

各位根据自己的需求进行使用

1、创建Mongodb监控可读账号

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

2、下载MongoDB监控软件

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

我使用的：mongodb_exporter-0.11.2.linux-amd64.tar.gz 版本

3、配置文件

nohup  ./mongodb_exporter --mongodb.uri mongodb://root:heian@192.168.82.105:27017/admin --collect.database --collect.collection --collect.topmetrics  --collect.indexusage  --collect.connpoolstats --suppress.collectshardingstatus  &

mongodb_exporter暴露的endpoint端口默认为9216

[root@prometheus-server exporter]# ./mongodb_exporter --help
usage: mongodb_exporter [<flags>]exports various MongoDB metrics in Prometheus format.Flags:-h, --help                   Show context-sensitive help (also try --help-long and --help-man).--web.auth-file=WEB.AUTH-FILE  Path to YAML file with server_user, server_password keys for HTTP Basic authentication (overrides HTTP_AUTH environment variable).--web.ssl-cert-file=WEB.SSL-CERT-FILE  Path to SSL certificate file.--web.ssl-key-file=WEB.SSL-KEY-FILE  Path to SSL key file.--web.listen-address=":9216"  Address to listen on for web interface and telemetry.--web.telemetry-path="/metrics"  Path under which to expose metrics.--collect.database       Enable collection of Database metrics--collect.collection     Enable collection of Collection metrics--collect.topmetrics     Enable collection of table top metrics--collect.indexusage     Enable collection of per index usage stats--collect.connpoolstats  Collect MongoDB connpoolstats--suppress.collectshardingstatus  Suppress the collection of Sharding Status--mongodb.uri=[mongodb://][user:pass@]host1[:port1][,host2[:port2],...][/database][?options]  MongoDB URI, format--test                   Check MongoDB connection, print buildInfo() information and exit.--version                Show application version.--log.level="info"       Only log messages with the given severity or above. Valid levels: [debug, info, warn, error, fatal]--log.format="logger:stderr"  Set the log target and format. Example: "logger:syslog?appname=bob&local=7" or "logger:stdout?json=true"

配置启动服务
vim /usr/lib/systemd/system/mongodb_exporter.service
[Unit]
Description=mongodb_exporter
Documentation=https://github.com/percona/mongodb_exporter
After=network.target[Service]
Type=simple
User=prometheus
Environment="MONGODB_URI=mongodb://mongodb_exporter:123456@localhost:27017"
ExecStart=/usr/local/bin/mongodb_exporter --log.level=error \--collect.database \--collect.collection \--collect.topmetrics \--collect.indexusage \--collect.connpoolstatsRestart=on-failure[Install]
WantedBy=multi-user.target

4、prometheus配置基于文件的自动发现

  - job_name: 'mongo_cluster'file_sd_configs:- files: ['/usr/local/prometheus/sd_config/mongo_cluster.yaml']refresh_interval: 5s
root:/usr/local/prometheus# cat /usr/local/prometheus/sd_config/mongo_cluster.yaml
- targets:- "192.168.88.140:9216"- "192.168.88.141:9216"- "192.168.88.142:9216"labels:project: mongounitname: "Mongodb_exporter"service: mongo