redis_exporter监控

# 1.下载 redis_exporter

访问官网地址下载<https://github.com/oliver006/redis_exporter/releases>

```bash
mkdir -p /opt/agent
cd /opt/agent
wget https://github.com/oliver006/redis_exporter/releases/download/v1.23.1/redis_exporter-v1.23.1.linux-amd64.tar.gz
```

# 2.配置 systemd 管理

## 2.1 创建启动用户和用户组

```bash
useradd -M -s /sbin/nologin prometheus
```

## 2.2 创建redis_exporter.service

```bash
# vim /etc/systemd/system/redis-exporter.service

[Unit]
Description=redis-export service agent by jonnyan404
Requires=network-online.target
After=network-online.target

[Service]
User=prometheus
Group=prometheus
Restart=on-failure
ExecStart=/opt/agent/redis_exporter -redis-only-metrics -redis.addr redis://<user>:<password>@192.168.163.134:6379
ExecReload=/bin/kill -HUP $MAINPID
KillMode=process
TimeoutStopSec=5

[Install]
WantedBy=multi-user.target
```

## 2.3 设置开机自启并启动

```bash
systemctl enable redis-exporter.service
systemctl start redis-exporter.service
```

## 2.4 查看日志

```bash
journalctl -u redis-exporter.service
```

# 3. 配置自动发现的主机列表

基于 file_sd_configs
有 yaml和json两种格式,这里我们采用yaml

- yaml格式

```yaml
# vim /opt/jonnyan404/prometheus/target/redis.yml 文件名字自己取
- targets: ['192.168.1.220:9121']
  labels:
    env:   'redis'
    hostname: 'redis-master'
- targets: ['192.168.1.221:9121']
  labels:
    env:   'redis'
    hostname: 'redis-slave'

```

# 4. 配置告警规则

- vim /opt/jonnyan404/prometheus/rules/redis-exporter-record.yml

```yaml
暂无
```

- vim /opt/jonnyan404/prometheus/rules/redis-exporter-alert.yml

```yaml
暂无
```

# 5.重启prometheus,使规则生效

```
docker restart prometheus
```

# 6.导入grafana模板

- ID: 2751
- ID: 763