mysql5.6怎么升级到mysql5.7，相信很多没有经验的人对此束手无策，为此本文总结了问题出现的原因和解决方法，通过这篇文章希望你能解决这个问题。
1、停止mysql5.6数据库服务
[root@host2 mysql]# /etc/init.d/mysqld stop
Shutting down MySQL.. [ OK ]
[root@host2 mysql]#
2、进入/usr/local更换软连接指定到mysql5.7
[root@host2 local]# ls
bin games lib libexec mysql mysql-5.7.16-linux-glibc2.5-x86_64 mysql-utilities-1.6.5.tar.gz share
etc include lib64 my.cnf mysql-5.6.34-linux-glibc2.5-x86_64 mysql-utilities-1.6.5 sbin src
[root@host2 local]# unlink mysql
创建新的链接
[root@host2 local]# ln -s mysql-5.7.16-linux-glibc2.5-x86_64 mysql
[root@host2 local]# ll
total 712
drwxr-xr-x. 2 root root 4096 Jun 28 2011 bin
drwxr-xr-x. 2 root root 4096 Jun 28 2011 etc
drwxr-xr-x. 2 root root 4096 Jun 28 2011 games
drwxr-xr-x. 2 root root 4096 Jun 28 2011 include
drwxr-xr-x. 2 root root 4096 Jun 28 2011 lib
drwxr-xr-x. 2 root root 4096 Jun 28 2011 lib64
drwxr-xr-x. 2 root root 4096 Jun 28 2011 libexec
-rw-r--r--. 1 root root 2754 Nov 6 15:44 my.cnf
lrwxrwxrwx. 1 root root 34 Mar 8 15:34 mysql -> mysql-5.7.16-linux-glibc2.5-x86_64
drwxr-xr-x. 12 mysql mysql 4096 Feb 27 18:33 mysql-5.6.34-linux-glibc2.5-x86_64
drwxr-xr-x. 11 root mysql 4096 Nov 19 00:01 mysql-5.7.16-linux-glibc2.5-x86_64
drwxr-xr-x. 7 7161 31415 4096 Feb 28 02:00 mysql-utilities-1.6.5
-rw-r--r--. 1 root root 668241 Feb 28 01:59 mysql-utilities-1.6.5.tar.gz
drwxr-xr-x. 2 root root 4096 Jun 28 2011 sbin
drwxr-xr-x. 5 root root 4096 Nov 6 22:15 share
drwxr-xr-x. 2 root root 4096 Jun 28 2011 src
3、启动数据库并进入数据库
[root@host2 local]# /etc/init.d/mysqld start
Starting MySQL.............................................[ OK ]..............................
[root@host2 local]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.16-log MySQL Community Server (GPL)
（可以看到数据库已经到5.7版本了）
Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>
4、更新数据结构（生产环境使用mysql_upgrade更新的时候加-s参数 不重建表）
[root@host2 local]# mysql_upgrade -p123 -s
mysql_upgrade: [Warning] Using a password on the command line interface can be insecure.
The --upgrade-system-tables option was used, databases won't be touched.
Checking if update is needed.
Checking server version.
Running queries to upgrade MySQL server.
Upgrading the sys schema.
Upgrade process completed successfully.
Checking if update is needed.
至此升级成功
5、进入数据库查看
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
| test |
+--------------------+
可以看到sys库已经存在，但是直接安装的5.7的库是没有test库的，这里sys和test同时存在说明是从5.6升级到5.7看完上述内容，你们掌握mysql5.6怎么升级到mysql5.7的方法了吗？如果还想学到更多技能或想了解更多相关内容，欢迎关注亿速云行业资讯频道，感谢各位的阅读！
