|NO.Z.00066|——————————|^^ 部署 ^^|——|Hadoop&实时数仓.V06|——|可视化.v06|监控：grafana部署.V6|

一、通过grafana工具监控，可视化效果友好：

### --- 下载grafana版本

~~~     # 下载grafana版本包
[root@hadoop00 software]# wget -c https://dl.grafana.com/oss/release/grafana-7.3.1.linux-amd64.tar.gz      

### --- 解压部署grafana版本包

~~~     # 解压grafana版本包
[root@hadoop00 software]# tar -zxvf grafana-7.3.1.linux-amd64.tar.gz -C ../servers/
[root@hadoop00 ~]# mv /opt/yanqi/servers/grafana-7.3.1/ /opt/yanqi/servers/grafana      

~~~     # grafana客户端可执行指令：在给grafana加入一些可执行插件的时候需要用到这个指令

[root@hadoop00 ~]# ll /opt/yanqi/servers/grafana/bin/grafana-cli
/opt/yanqi/servers/grafana/bin/grafana-cli      

### --- 创建grafana用户及数据存放目录

~~~     # 创建grafana用户
[root@hadoop00 ~]# useradd -s /sbin/nologin -M grafana
~~~     # 创建grafana数据存放目录
[root@hadoop00 ~]# mkdir -p /opt/yanqi/servers/grafana/
[root@hadoop00 ~]# mkdir -p /opt/yanqi/servers/data/grafana/
[root@hadoop00 ~]# chown -R grafana:grafana /opt/yanqi/servers/grafana/
[root@hadoop00 ~]# chown -R grafana:grafana /opt/yanqi/servers/data/grafana/      

### --- 修改配置文件参数

~~~     # 修改配置文件参数，数据目录为/data/grafana/
[root@hadoop00 ~]# vim /opt/yanqi/servers/grafana/conf/defaults.ini
 ~~~修改如下配置参数
data = /opt/yanqi/servers/data/grafana/data                         #  第15行
logs = /opt/yanqi/servers/data/grafana/log                          # 第21行
plugins = /opt/yanqi/servers/data/grafana/plugins                   # 第24行
provisioning = /opt/yanqi/servers/data/grafana/conf/provisioning    # 第27行      

### --- 启动grafana服务并设置开机自启动

~~~     # 启动grafana并设置开机自启动
~~~     # 前台启动grafana服务
[root@hadoop00 ~]# /opt/yanqi/servers/grafana/bin/grafana-server -homepath /opt/yanqi/servers/grafana      

二、创建grafana自启动脚本

### --- 创建grafana自启动脚本

~~~     # 新增 grafana-server.service 文件，使用systemd来管理grafana服务
[root@hadoop00 ~]# vim /etc/systemd/system/grafana-server.service
~~~ 写入如下配置内容
[Unit]
Description=Grafana
After=network.target

[Service]
User=grafana
Group=grafana
Type=notify
ExecStart=/opt/yanqi/servers/grafana/bin/grafana-server -homepath /opt/yanqi/servers/grafana # --web.listen-address=:3000 --web.enable-admin-api --web.enable-lifecycle
Restart=on-failure

[Install]
WantedBy=multi-user.target      

### --- 启动并设置开机自启动grafana

~~~     # 通过自启动脚本启动grafana服务
[root@hadoop00 ~]# systemctl start grafana-server.service
[root@hadoop00 ~]# systemctl status grafana-server.service
[root@hadoop00 ~]# systemctl enable grafana-server.service
Created symlink from /etc/systemd/system/multi-user.target.wants/grafana-server.service to /etc/systemd/system/grafana-server.service.      

三、通过web_UI访问grafana_UI：http://hadoop00:3000/login

### --- 通过web_UI访问grafana_UI：http://hadoop00:3000/login

~~~     # 通过Chrome访问grafana-UI：http://hadoop00:3000/login    账号： admin；密码：admin
~~~     # 控制台页面      

附录一：报错处理一：

### --- 报错现象

[root@hadoop00 ~]#  systemctl status  grafana-server | grep error
Nov 16 20:45:40 hadoop00 grafana-server[18659]: t=2021-11-16T20:45:40+0800 lvl=eror msg="can't read datasource provisioning files from directory" logger=provisioning.datasources path=/data/grafana/conf/provisioning/datasources error="open /data/grafana/conf/provisioning/datasources: no such file or directory"      

### --- 解决方案

[root@hadoop00 ~]# cp -r /opt/yanqi/servers/grafana/conf /opt/yanqi/servers/data/grafana/
[root@hadoop00 ~]# chown -R grafana:grafana /opt/yanqi/servers/data/grafana/      

Walter Savage Landor:strove with none,for none was worth my strife.Nature I loved and, next to Nature, Art:I warm'd both hands before the fire of life.It sinks, and I am ready to depart