Prometheus ValKey & Redis Metrics Exporter
Prometheus Redis Metrics Exporter 下载页面
redis_exporter 安装
wget https://github.com/oliver006/redis_exporter/releases/download/v1.59.0/redis_exporter-v1.59.0.linux-amd64.tar.gz
tar -xf redis_exporter-v1.59.0.linux-amd64.tar.gz
mv redis_exporter-v1.59.0.linux-amd64/redis_exporter /usr/bin/
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为 redis_exporter 生成 systemd 服务配置文件 /usr/lib/systemd/system/redis_exporter.service
/usr/lib/systemd/system/redis_exporter.service[Unit]
Description=redis_exporter
After=syslog.target
After=network.target
[Service]
Type=simple
ExecStart=/usr/bin/redis_exporter
Restart=always
RestartSec=10
StartLimitInterval=100
[Install]
WantedBy=multi-user.target
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启动 redis_exporter 服务
# systemctl daemon-reload
# systemctl enable --now redis_exporter
# systemctl status redis_exporter
● redis_exporter.service - redis_exporter
Loaded: loaded (/usr/lib/systemd/system/redis_exporter.service; enabled; vendor preset: disabled)
Active: active (running) since Tue 2024-04-30 10:45:58 CST; 5s ago
Main PID: 12126 (redis_exporter)
CGroup: /system.slice/redis_exporter.service
└─12126 /usr/bin/redis_exporter
Apr 30 10:45:58 ip-172-31-26-219.us-west-1.compute.internal systemd[1]: Started redis_exporter.
Apr 30 10:45:58 ip-172-31-26-219.us-west-1.compute.internal redis_exporter[12126]: time="2024-04-30T10:45:58+08:00" level=info msg="Redis Metrics Exp...md64"
Apr 30 10:45:58 ip-172-31-26-219.us-west-1.compute.internal redis_exporter[12126]: time="2024-04-30T10:45:58+08:00" level=info msg="Providing metrics...rics"
Hint: Some lines were ellipsized, use -l to show in full.
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redis_exporter 服务启动后，默认启动 9121 端口提供 Metrics 数据供 Prometheus 抓取。
redis_exporter 配置
redis 实例及认证信息配置
如果要通过一个 redis_exporter 实例监控多个 Redis 实例，可以参照以下配置文件配置 Redis 实例及其认证信息，如果无需密码认证，则保留密码项为空。
/etc/redis_exporter_pwd_file.json
{
"redis://localhost:7380": "paswd12",
"redis://localhost:7381": "paswd12",
"redis://localhost:7382": "paswd12",
"redis://172.31.19.9:7380": "paswd12",
"redis://172.31.19.9:7381": "paswd12",
"redis://172.31.19.9:7382": ""
}
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修改 redis_exporter 启动参数，使其读取上面配置的实例和其认证信息
/usr/bin/redis_exporter -redis.password-file /etc/redis_exporter_pwd_file.json
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配置 Prometheus 抓取 redis_exporter 指标
参考以下配置使用文件发现的方式配置被监控的 Redis 实例
scrape_configs:
- job_name: 'redis_exporter_targets'
file_sd_configs:
- files:
- targets-redis-instances.yml
metrics_path: /scrape
relabel_configs:
- source_labels: [__address__]
target_label: __param_target
- source_labels: [__param_target]
target_label: instance
- target_label: __address__
replacement: <<REDIS-EXPORTER-HOSTNAME>>:9121
#
- job_name: 'redis_exporter'
static_configs:
- targets:
- <<REDIS-EXPORTER-HOSTNAME>>:9121
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targets-redis-instances.yml 文件内容包含 Targets 内容：
targets-redis-instances.yml- labels:
label1: value1
targets: [ "redis://redis-host-01:6379", "redis://redis-host-02:6379"]
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