# Prometheus-采集Redis指标
> Github:
* 云厂商地址: 1.1.1.1
* 服务器地址: 2.2.2.2
### **1. 下载** `redis_exporter`
```
cd /usr/local/src
wget https://github.com/oliver006/redis_exporter/releases/download/v1.55.0/redis_exporter-v1.55.0.linux-amd64.tar.gz
mv redis_exporter-v1.55.0.linux-amd64 /data/redis_exporter
```
* redis\_exporter -h
> -redis.addr：指明一个或多个 Redis 节点的地址，多个节点使用逗号分隔，默认为 redis\://[localhost:6379](http://localhost:6379)\
> -redis.password：验证 Redis 时使用的密码；\
> -redis.file：包含一个或多个redis 节点的文件路径，每行一个节点，此选项与 -redis.addr 互斥。\
> -web.listen-address：监听的地址和端口，默认为 0.0.0.0:912
### **2.运行 redis\_exporter 服务**
* 以 saas 为例, 新建用户: exporter， 权限: 只读， 密码: Qwe123456
* 1\. 方式 A 直接启动。
```
## 无密码
nohup ./redis_exporter redis//r-3nsfvqew8gr0wrr6ko.redis.rds.aliyuncs.com:6379 &
## 有密码
nohup redis_exporter -redis.addr 1.1.1.1:6379 -redis.user exporter -redis.password Qwe123456 -redis-only-metrics &
```
* 2.方式 B 通过 system 管理。
```
cat >> /usr/lib/systemd/system/redis_exporter.service << EOF
[Unit]
Description=redis_exporter
After=network.target
[Service]
Type=simple
ExecStart=/data/redis_exporter/redis_exporter -redis.addr 1.1.1.1:6379 -redis.user exporter -redis.password Qwe123456 -redis-only-metrics
Restart=on-failure
[Install]
WantedBy=multi-user.target
EOF
```
```
systemctl daemon-reload
systemctl enable redis_exporter
systemctl start redis_exporter
systemctl status redis_exporter
ss -antpl |grep 9121
LISTEN 0 128 [::]:9121 [::]:* users:(("redis_exporter",pid=3995,fd=3))
```
### **3. Prometheus 配置**
```
root@monitor-1:/data/monitor/prometheus cat prometheus.yml
#- job_name: 'mysql'
# static_configs:
# - targets: ['x.x.x.x:9104']
# labels:
# instance: db1
... 略
# MySQL数据库相关
- job_name: 'Redis数据库'
static_configs:
file_sd_configs:
- refresh_interval: 30s
files:
- "vhosts/redis/*.json"
```
```
root@monitor-1:/data/monitor/prometheus# cat vhosts/mysql/saas.json
[
{
"targets": ["2.2.2.2:9121"],
"labels": {
"label": "xxxx使用",
"account": "account@xxx.com",
"cloud": "xxxxx",
"instance": "1.1.1.1:6379" # Redis不在本地，覆盖 instance
}
}
]
```
```
- Prometheus 命令热加载, 我这里端口: 8090
```
bash\
./promtool check config prometheus.yml\
curl -XPOST [localhost:8090/-/reload](http://localhost:8090/-/reload) # 主配置文件热加载，修改子配置会自动加载
```
```
### **4. Grafana 大屏**
> 根据喜好自行选择:
---
# Agent Instructions: Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://close.gitbook.io/yun-wei-bi-ji/centos/prometheus/prometheus-cai-ji-redis-zhi-biao.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.