Centos7 upgrade MySQL 5.6.40 to enterprise 5.6.49

Operating system environment ：CentOS Linux release 7.4.1708 (Core) x64

used MySQL edition ：MySQL-server-5.6.40

Enterprises MySQL edition ：mysql-advanced-5.6.49-linux-glibc2.12-x86_64

Prepare for upgrade

1、 Backup database

2、 Backup my.cnf The configuration file

Start the upgrade operation

One 、 Enterprise installation package preprocessing

    First unzip the enterprise version MySQL Installation package to /opt ( The directory is freely selectable , It is best to store the directory where the data disk is mounted )

cd /opt
tar -zxvf mysql-advanced-5.6.49-linux-glibc2.12-x86_64.tar.gz
mv mysql-advanced-5.6.49-linux-glibc2.12-x86_64 mysql-advanced-5.6.49

  Unzip and rename the folder , Rename here just to look leaner , Optional operation

Then follow these steps step by step

shell> cd /usr/local
shell> tar zxvf /path/to/mysql-VERSION-OS.tar.gz
shell> ln -s full-path-to-mysql-VERSION-OS mysql
shell> cd mysql
shell> mkdir mysql-files
shell> chown mysql:mysql mysql-files
shell> chmod 750 mysql-files         

After performing this step , Deal with old MySQL Service and configuration

1、 modify /etc/my.cnf Make sure datadir This configuration item has a storage directory for configuring the current data , Can't be empty

2、 Stop the old MySQL The server   servic