简介

Prometheus针对redis的监控，需要安装redis_exporter来获取指标。

下载地址

项目地址：https://github.com/oliver006/redis_exporter

下载地址：https://github.com/oliver006/redis_exporter/releases/download/v1.6.1/redis_exporter-v1.6.1.linux-amd64.tar.gz

安装

直接解压就可以直接运行，我们可以使用systemd来管理服务。

vim  /usr/lib/systemd/system/redis_exporter.service

[Unit]
Description=redis_exporter
After=network.target

[Service]
Type=simple
ExecStart=/usr/local/redis_exporter/redis_exporter --redis.addr  redis://127.0.0.1:7000  --redis.password "opcai"
LimitNOFILE=65536
PrivateTmp=true
RestartSec=2
StartLimitInterval=0
Restart=always

[Install]
WantedBy=multi-user.targe

redis_exporter 参数

redis.addr ：指定redis的地址 ，不指定，默认是 redis://127.0.0.1:6379 redis.password：redis密码，默认是空字符串，没有密码。

默认端口是9121

Prometheus设置


  + job_name: redis_exporter

    static_configs:

    - targets: ['192.168.100.100:9121']

启动服务

客户端：

systemctl daemon-reload

systemctl enable redis_exporter

systemctl start redis_export

Prometheus：reload 一下即可，确保服务端能访问到客户端的端口。

全部参数

Name Environment Variable Name Description
redis.addr REDIS_ADDR Address of the Redis instance, defaults to redis://localhost:6379 .
redis.password REDIS_PASSWORD Password of the Redis instance, defaults to "" (no password).
check-keys REDIS_EXPORTER_CHECK_KEYS Comma separated list of key patterns to export value and length/size, eg: db3=user_count will export key user_count from db 3 . db defaults to 0 if omitted. The key patterns specified with this flag will be found using SCAN. Use this option if you need glob pattern matching; check-single-keys is faster for non-pattern keys. Warning: using --check-keys to match a very large number of keys can slow down the exporter to the point where it doesn’t finish scraping the redis instance.
check-single-keys REDIS_EXPORTER_CHECK_SINGLE_KEYS Comma separated list of keys to export value and length/size, eg: db3=user_count will export key user_count from db 3 . db defaults to 0 if omitted. The keys specified with this flag will be looked up directly without any glob pattern matching. Use this option if you don’t need glob pattern matching; it is faster than check-keys .
script REDIS_EXPORTER_SCRIPT Path to Redis Lua script for gathering extra metrics.
debug REDIS_EXPORTER_DEBUG Verbose debug output
log-format REDIS_EXPORTER_LOG_FORMAT Log format, valid options are txt (default) and json .
namespace REDIS_EXPORTER_NAMESPACE Namespace for the metrics, defaults to redis .
connection-timeout REDIS_EXPORTER_CONNECTION_TIMEOUT Timeout for connection to Redis instance, defaults to “15s” (in Golang duration format)
web.listen-address REDIS_EXPORTER_WEB_LISTEN_ADDRESS Address to listen on for web interface and telemetry, defaults to 0.0.0.0:9121 .
web.telemetry-path REDIS_EXPORTER_WEB_TELEMETRY_PATH Path under which to expose metrics, defaults to /metrics .
redis-only-metrics REDIS_EXPORTER_REDIS_ONLY_METRICS Whether to also export go runtime metrics, defaults to false.
include-system-metrics REDIS_EXPORTER_INCL_SYSTEM_METRICS Whether to include system metrics like total_system_memory_bytes , defaults to false.
ping-on-connect REDIS_EXPORTER_PING_ON_CONNECT Whether to ping the redis instance after connecting and record the duration as a metric, defaults to false.
is-tile38 REDIS_EXPORTER_IS_TILE38 Whether to scrape Tile38 specific metrics, defaults to false.
export-client-list REDIS_EXPORTER_EXPORT_CLIENT_LIST Whether to scrape Client List specific metrics, defaults to false.
skip-tls-verification REDIS_EXPORTER_SKIP_TLS_VERIFICATION Whether to to skip TLS verification
tls-client-key-file REDIS_EXPORTER_TLS_CLIENT_KEY_FILE Name of the client key file (including full path) if the server requires TLS client authentication
tls-client-cert-file REDIS_EXPORTER_TLS_CLIENT_CERT_FILE Name the client cert file (including full path) if the server requires TLS client authentication
set-client-name REDIS_EXPORTER_SET_CLIENT_NAME Whether to set client name to redis_exporter, defaults to true.