Ubuntu 安装 Prometheus Grafana监控mysql ,redis

俗话说，没有监控的系统就是在裸奔，好的监控就是运维人员的第三只手，第三只眼。本文将使用prometheus及Grafana搭建一套监控系统来监控主机及数据库（MySQL、Redis）。

1. 安装Grafana

Grafana是一个可视化面板(Dashboard),有着非常漂亮的图表和布局展示,功能齐全的度量仪表盘和图形编辑器,支持Graphite、zabbix、InfluxDB、Prometheus等数据源。

1.1 下载并安装

下载地址：https://grafana.com/grafana/download

下载完了就可以安装：

sudo dpkg -i grafana_5.0.4_amd64.deb

启动查看状态：

sudo  systemctl start grafana-server
sudo  systemctl status grafana-server

 

 接下来设置prometheus用户和目录：

vagrant@vagrant:/htdocs/share$ sudo useradd --no-create-home --shell /bin/false prometheus
vagrant@vagrant:/htdocs/share$ sudo useradd --no-create-home --shell /bin/false node_exporter
vagrant@vagrant:/htdocs/share$ sudo mkdir /etc/prometheus
vagrant@vagrant:/htdocs/share$ sudo mkdir /var/lib/prometheus
vagrant@vagrant:/htdocs/share$ sudo chown prometheus:prometheus /etc/prometheus
vagrant@vagrant:/htdocs/share$ sudo chown prometheus:prometheus /var/lib/prometheus

接下来下载prometheus：

vagrant@vagrant:/htdocs/share$ cd 
vagrant@vagrant:~$ curl -LO https://github.com/prometheus/prometheus/releases/download/v2.0.0/prometheus-2.0.0.linux-amd64.tar.gz

 解压进入目录：

vagrant@vagrant:/htdocs/share$ sudo cp prometheus-2.0.0.linux-amd64/prometheus /usr/local/bin/
vagrant@vagrant:/htdocs/share$ sudo cp prometheus-2.0.0.linux-amd64/promtool /usr/local/bin/
vagrant@vagrant:/htdocs/share$ sudo chown prometheus:prometheus /usr/local/bin/prometheus
vagrant@vagrant:/htdocs/share$ sudo chown prometheus:prometheus /usr/local/bin/promtool
vagrant@vagrant:/htdocs/share$ sudo cp -r prometheus-2.0.0.linux-amd64/consoles /etc/prometheus
vagrant@vagrant:/htdocs/share$ sudo cp -r prometheus-2.0.0.linux-amd64/console_libraries /etc/prometheus
vagrant@vagrant:/htdocs/share$ sudo chown -R prometheus:prometheus /etc/prometheus/consoles
vagrant@vagrant:/htdocs/share$ sudo chown -R prometheus:prometheus /etc/prometheus/console_libraries

 

 添加监控任务：

 /etc/prometheus/prometheus.yml内容如下：

global:
  scrape_interval: 15s

scrape_configs:
  - job_name: 'prometheus'
    scrape_interval: 5s
    static_configs:
      - targets: ['localhost:9090']
  - job_name: 'Mysql'
    static_configs:
      - targets: ['192.168.0.200:9104']
        labels:
          instance: '192.168.0.200'
  - job_name: 'redis'
    static_configs:
      - targets: ['192.168.0.200:9121']
        labels:
          instance: '127.0.0.1'

 

 /etc/systemd/system/prometheus.service内容如下：

[Unit]
Description=Prometheus
Wants=network-online.target
After=network-online.target

[Service]
User=prometheus
Group=prometheus
Type=simple
ExecStart=/usr/local/bin/prometheus \
    --config.file /etc/prometheus/prometheus.yml \
    --storage.tsdb.path /var/lib/prometheus/ \
    --web.console.templates=/etc/prometheus/consoles \
    --web.console.libraries=/etc/prometheus/console_libraries

[Install]
WantedBy=multi-user.target
 

保存重启配置：

vagrant@vagrant:/htdocs/share$ sudo systemctl daemon-reload

vagrant@vagrant:/htdocs/share$ sudo systemctl start prometheus
vagrant@vagrant:/htdocs/share$ sudo systemctl enable prometheus

 打开首页：http://192.168.0.200:3000

默认密码: admin/admin

 http://192.168.0.200:9090/graph

 添加数据源：

 分别导入看板模板：

 

wget https://github.com/prometheus/mysqld_exporter/releases/download/v0.11.0/mysqld_exporter-0.11.0.linux-amd64.tar.gz

$ tar xvfz mysqld_exporter-0.11.0.linux-amd64.tar.gz

$ cd mysqld_exporter-0.11.0.linux-amd64/

$ sudo vim my.cnf

内容如下：

[client]
user=exporter
password=123456
port=3306

保存后，运行：

$ nohup ./mysqld_exporter --config.my-cnf="my.cnf" &

下载：

wget https://github.com/oliver006/redis_exporter/releases/download/v0.13/redis_exporter-v0.13.l

解压：

tar -xvf  redis_exporter-v0.13.linux-amd64.tar.gz

下载grafana的redis的prometheus-redis_rev1.json模板：

wget  https://grafana.com/api/dashboards/763/revisions/1/download

在grafana中导入json模板：

 

启动redis_exporter:

## 无密码
./redis_exporter redis//192.168.0.200:6379 &
## 有密码
./redis_exporter  -redis.addr 192.168.0.200:6379  -redis.password 123456 

 

下载my2.sql：

git clone https://github.com/john1337/my2Collector.git 

下载完成后，导入数据库。

 可以看到看板这些监控：