如何进行Prometheus redis监控

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

1. wget -c -t 100 https://github.com/oliver006/redis_exporter/releases/download/v1.15.0/redis_exporter-v1.15.0.linux-amd64.tar.gz

2. tar zxvf redis_exporter-v1.15.0.linux-amd64.tar.gz

3. cd redis_exporter-v1.15.0.linux-amd64

4. ./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

1. ./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 <
prometheus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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