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如何进行 Prometheus redis 监控，很多新手对此不是很清楚，为了帮助大家解决这个难题，下面丸趣 TV 小编将为大家详细讲解，有这方面需求的人可以来学习下，希望你能有所收获。
简介
redis_exporter 就是为了收集 redis 服务指标的应用。
下载运行
wget -c -t 100 https://github.com/oliver006/redis_exporter/releases/download/v1.15.0/redis_exporter-v1.15.0.linux-amd64.tar.gz
tar zxvf redis_exporter-v1.15.0.linux-amd64.tar.gz
cd redis_exporter-v1.15.0.linux-amd64
./redis_exporter
INFO[0000] Redis Metrics Exporter v1.15.0 build date: 2020-12-27-18:57:05 sha1: 43ec65f7a22041e64ec557291c36500d04c6f6b0 Go: go1.15.6 GOOS: linux GOARCH: amd64 INFO[0000] Providing metrics at :9121/metrics默认端口是 9121，默认链接是 redis://localhost:6379
如果设置了密码，就需要在执行的时候，指定密码
./redis_exporter -redis.addr redis://localhost:6379 -redis.password redispassword查看更多参数
./redis_exporter -h
Usage of ./redis_exporter: -check-key-groups string Comma separated list of lua regex for grouping keys -check-key-groups-batch-size int Check key groups batch size hint for the underlying SCAN (default 10000) -check-keys string Comma separated list of key-patterns to export value and length/size, searched for with SCAN -check-single-keys string Comma separated list of single keys to export value and length/size -check-single-streams string Comma separated list of single streams to export info about streams, groups and consumers -check-streams string Comma separated list of stream-patterns to export info about streams, groups and consumers, searched for with SCAN -config-command string What to use for the CONFIG command (default CONFIG) -connection-timeout string Timeout for connection to Redis instance (default 15s) -count-keys string Comma separated list of patterns to count, eg: db3=sessions:* . Warning: The exporter runs SCAN to count the keys. -debug Output verbose debug information -export-client-list Whether to scrape Client List specific metrics -export-client-port Whether to include the client s port when exporting the client list. Warning: including the port increases the number of metrics generated and will make your Prometheus server take up more memory -include-system-metrics Whether to include system metrics like e.g. redis_total_system_memory_bytes -is-tile38 Whether to scrape Tile38 specific metrics -log-format string Log format, valid options are txt and json (default txt) -max-distinct-key-groups int The maximum number of distinct key groups with the most memory utilization to present as distinct metrics per database, the leftover key groups will be aggregated in the overflow bucket (default 100) -namespace string Namespace for metrics (default redis) -ping-on-connect Whether to ping the redis instance after connecting -redis-only-metrics Whether to also export go runtime metrics -redis.addr string Address of the Redis instance to scrape (default redis://localhost:6379) -redis.password string Password of the Redis instance to scrape -redis.user string User name to use for authentication (Redis ACL for Redis 6.0 and newer) -script string Path to Lua Redis script for collecting extra metrics -set-client-name Whether to set client name to redis_exporter (default true) -skip-tls-verification Whether to to skip TLS verification -tls-ca-cert-file string Name of the CA certificate file (including full path) if the server requires TLS client authentication -tls-client-cert-file string Name of the client certificate file (including full path) if the server requires TLS client authentication -tls-client-key-file string Name of the client key file (including full path) if the server requires TLS client authentication -tls-server-cert-file string Name of the server certificate file (including full path) if the web interface and telemetry should use TLS -tls-server-key-file string Name of the server key file (including full path) if the web interface and telemetry should use TLS -version Show version information and exit -web.listen-address string Address to listen on for web interface and telemetry. (default :9121) -web.telemetry-path string Path under which to expose metrics. (default /metrics)部署脚本
#!/bin/bash VERSION= 1.15.0 wget -t 100 -c https://github.com/oliver006/redis_exporter/releases/download/v${VERSION}/redis_exporter-${VERSION}.linux-amd64.tar.gz if [ ! -e redis_exporter-${VERSION}.linux-amd64.tar.gz ] then echo 安装包下载失败 exit 1 fi tar xvfz redis_exporter-${VERSION}.linux-amd64.tar.gz -C /opt/ cd /opt ln -s redis_exporter-${VERSION}.linux-amd64 redis_exporter cat /etc/systemd/system/redis_exporter.service EOF [Unit] Description=redis_exporter After=network.target [Service] Type=simple WorkingDirectory=/opt/redis_exporter ExecStart=/opt/redis_exporter/redis_exporter -redis.addr redis://localhost:6379 -redis.password redispassword LimitNOFILE=65536 PrivateTmp=true RestartSec=2 StartLimitInterval=0 Restart=always [Install] WantedBy=multi-user.target EOF systemctl daemon-reload systemctl enable redis_exporter systemctl start redis_exporterprometheus 配置
添加下面的 job
- job_name: redis # metrics_path defaults to /metrics # scheme defaults to http . static_configs: - targets: [localhost:9121]配置好以后，reload 一下 prometheus 就可以加载
kill -HUP [promethues_pid]指标展示
指标可以通过 prometheus 的 WebUI 进行查看
http://[promethe server ip]:9090如果需要画图，可以直接使用 grafana，有人已经配置好了图形可以通过 grafana 官方下的 dashboard 搜索 redis_exporter，配置好 prometheus 数据源，直接导入 grafana 就可以直接展示了。
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