环境:
操作系统: rhel7.5
目标:
mysql 5.6.22升级到mysql 8.0.11
------------------------------------------------------------
mysql5.6.40升级到mysql8.0.11,不能直接升级,如果直接升级8.0.11,启动会报以下不支持redo log format 错误:
2018-07-08T09:42:27.773497Z 1 [ERROR] [MY-013090] [InnoDB] InnoDB: Unsupported redo log format (0). The redo log was created before MySQL 5.7.9
2018-07-08T09:42:27.773552Z 1 [ERROR] [MY-012930] [InnoDB] InnoDB: Plugin initialization aborted with error Generic error.
2018-07-08T09:42:28.377597Z 1 [ERROR] [MY-011013] [Server] Failed to initialize DD Storage Engine.
2018-07-08T09:42:28.378527Z 0 [ERROR] [MY-010020] [Server] Data Dictionary initialization failed.
2018-07-08T09:42:28.378601Z 0 [ERROR] [MY-010119] [Server] Aborting
正确的升级路径为:
mysql5.6.40-->mysql5.7.22-->mysql8.0.11
以下为具体的步骤。
1.准备步骤
--建立软件存储目录
mkdir /setup/mysql
--建立软件及数据目录
mkdir /data/db -p
mkdir /mysql
--建立mysql组和用户
groupadd mysql
useradd -g mysql mysql
--修改权限
chown -R mysql:mysql /data/db /mysql
chmod -R 775 /data/db /mysql
--软件上传到 /setup/mysql
ls -ltr /setup/mysql
-rw-r--r--. 1 root root 594580226 Jul 7 22:35 mysql-8.0.11-el7-x86_64.tar.gz
-rw-r--r--. 1 root root 328563044 Jul 8 15:05 mysql-5.6.40-linux-glibc2.12-x86_64.tar.gz
-rw-r--r--. 1 root root 712729170 Jul 8 18:07 mysql-5.7.22-el7-x86_64.tar.gz
--解压软件
--切换到mysql用户登陆
su - mysql
--进入到 /mysql
cd /mysql
--解压5.6.40
tar xzvf /setup/mysql/mysql-5.6.40-linux-glibc2.12-x86_64.tar.gz -C /mysql
mv mysql-5.6.40-linux-glibc2.12-x86_64 mysql-5.6.40
--解压5.7.22
tar xzvf /setup/mysql/mysql-5.7.22-el7-x86_64.tar.gz -C /mysql
mv mysql-5.7.22-el7-x86_64 mysql-5.7.22
--解压8.0.11
tar xzvf /setup/mysql/mysql-8.0.11-el7-x86_64.tar.gz -C /mysql
mv mysql-8.0.11-el7-x86_64 mysql-8.0.11
2.启动5.6.40
cd /mysql/mysql-5.6.40
--初始化mysql --以 mysql用户 完成
$ ./scripts/mysql_install_db--basedir=/mysql/mysql-5.6.40 --datadir=/data/db/--log-error=/data/db/mysql-error.log --socket=/data/db/mysql.sock --user=mysql
启动mysql server: $ ./bin/mysqld_safe--basedir=/mysql/mysql-5.6.40 --datadir=/data/db/--log-error=/data/db/mysql-error.log --socket=/data/db/mysql.sock &
修改mysql实例root口令: ./bin/mysqladmin -uroot -S/data/db/mysql.sock password 'mysql'
3.mysql 5.6.40升级到5.7.22
3.1 停 mysql server 5.6: $ cd /mysql/mysql-5.6.40 $ ./bin/mysql -uroot -p -S /data/db/mysql.sock 修改global变量innodb_fast_shutdown=0: mysql> set globalinnodb_fast_shutdown=0; --关闭数据库
$ ./bin/mysqladmin -uroot -p -S/data/db/mysql.sock shutdown
3.2 通过mysql server 5.7启动mysql实例: $ cd /mysql/mysql-5.7.22 $ ./bin/mysqld_safe--socket=/data/db/mysql.sock --basedir=/mysql/mysql-5.7.22 --datadir=/data/db/--log-error=/data/db/mysql-error.log &
3.3 确认mysql已经启动,日志中数据库已经启动
$ ps -ef|grep mysql
$ tail -100f /data/db/mysql-error.log
2018-07-09T04:24:20.041509Z 0 [Note] /mysql/mysql-5.7.22/bin/mysqld: ready for connections.
Version: '5.7.22' socket: '/data/db/mysql.sock' port: 3306 MySQL Community Server (GPL)
3.4 升级.mysql实例数据字典:
$ ./bin/mysql_upgrade -uroot -p -S/data/db/mysql.sock
下面是过程信息:
Checking if update is needed.
Checking server version.
Running queries to upgrade MySQL server.
Checking system database.
mysql.columns_priv OK
mysql.db OK
mysql.engine_cost OK
mysql.event OK
。。。
mysql.time_zone_transition_type OK
mysql.user OK
Upgrading the sys schema.
Checking databases.
sys.sys_config OK
Upgrade process completed successfully.
Checking if update is needed.
3.5 重启mysql 5.7实例: ./bin/mysqladmin -uroot -p -S/data/db/mysql.sock shutdown ./bin/mysqld_safe --socket=/data/db/mysql.sock--basedir=/mysql/mysql-5.7.22 --datadir=/data/db/--log-error=/data/db/mysql-error.log &
3.6 检查升级后mysql server版本: ./bin/mysql -uroot -pmysql -S /data/db/mysql.sock
mysql> select version();
+-----------+
| version() |
+-----------+
| 5.7.22 |
+-----------+
1 row in set (0.00 sec)
--还应该检查日志文件,是否有错误出现。
到5.7.22的升级结束
4.mysql 5.7.22升级到8.0.11
4.1 先修改 innodb_fast_shutdown =0 $ cd /mysql/mysql-5.7.22 $ ./bin/mysql -uroot -p -S /data/db/mysql.sock
mysql> set globalinnodb_fast_shutdown=0;
4.2 停 mysql server 5.7 cd /mysql/mysql-5.7.22 $ ./bin/mysqladmin -uroot -p -S/data/db/mysql.sock shutdown
4.3 通过mysql server 8.0.11启动mysql实例: $ cd /mysql/mysql-8.0.11 $ ./bin/mysqld_safe--socket=/data/db/mysql.sock --basedir=/mysql/mysql-8.0.11 --datadir=/data/db/--log-error=/data/db/mysql-error.log &
4.4 确认mysql已经启动,日志中数据库已经启动
$ ps -ef|grep mysql
$ tail -100f /data/db/mysql-error.log
[System] [MY-010931] [Server] /mysql/mysql-8.0.11/bin/mysqld: ready for connections. Version: '8.0.11' socket: '/data/db/mysql.sock' port: 3306 MySQL Community Server - GPL.
4.5 升级.mysql实例数据字典
$ cd /mysql/mysql-8.0.11
$ ./bin/mysql_upgrade -uroot -p -S/data/db/mysql.sock
下面是过程信息:
Checking if update is needed.
Checking server version.
Running queries to upgrade MySQL server.
Checking system database.
mysql.columns_priv OK
mysql.db OK
mysql.engine_cost OK
mysql.event OK
。。。
mysql.time_zone_transition_type OK
mysql.user OK
Upgrading the sys schema.
Checking databases.
sys.sys_config OK
Upgrade process completed successfully.
Checking if update is needed.
4.6 重启mysql 8.0.11实例 $ cd /mysql/mysql-8.0.11
$ ./bin/mysqladmin -uroot -p -S/data/db/mysql.sock shutdown $ ./bin/mysqld_safe --socket=/data/db/mysql.sock--basedir=/mysql/mysql-8.0.11 --datadir=/data/db/--log-error=/data/db/mysql-error.log &
4.7 检查升级后mysql server版本: $ cd /mysql/mysql-8.0.11
./bin/mysql -uroot -pmysql -S /data/db/mysql.sock
mysql> select version();
+-----------+
| version() |
+-----------+
| 8.0.11 |
+-----------+
1 row in set (0.00 sec)
--还应该检查日志文件,是否有错误出现。
到此,5.6.40 升级到 8.0.11全部完成。
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