Cloudera Manager5.12、Java1.8、Centos7集群部署（2）------ MySql安装配置_cloudera manager web怎么修改mysql的连接

2、安装配置MySQL

Cloudera-manager、monitor的配置信息，hive的元数据，oozie，hue的配置及元数据等都需要在MySQL中存储，于是我们这里就先从安装MySQL开始。

2.1  安装MySQL源

检查MySQL源是否安装成功

[root@hadoop1 ~]#  yum repolist enabled | grep "mysql.*-community.*"
!mysql-connectors-community/x86_64       MySQL Connectors Community           45
!mysql-tools-community/x86_64            MySQL Tools Community                59
!mysql57-community/x86_64                MySQL 5.7 Community Server          247

这个信息表示安装成功。

如果没有信息显示则没有安装MySQL源，需要运行下面安装。

yum localinstall mysql57-community-release-el7-8.noarch.rpm

没有rpm包的话，点击https://dev.mysql.com/get/mysql57-community-release-el7-1.noarch.rpm下载

2.2  安装MySQL

 yum install mysql-community-server -y

yum安装，需要服务器可以连接公网

2.3  启动MySQL服务

systemctl start mysqld

查看MySQL状态

systemctl status mysqld

● mysqld.service - MySQL Server
   Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)
   Active: active (running) since 一 2018-04-16 09:10:16 CST; 2h 3min ago
     Docs: man:mysqld(8)
           http://dev.mysql.com/doc/refman/en/using-systemd.html
  Process: 1150 ExecStart=/usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid $MYSQLD_OPTS (code=exited, status=0/SUCCESS)
  Process: 980 ExecStartPre=/usr/bin/mysqld_pre_systemd (code=exited, status=0/SUCCESS)
 Main PID: 1204 (mysqld)
   CGroup: /system.slice/mysqld.