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Mysql 5.6.40 升级到 Mysql 8.0.11 的步骤

mysql huahua 1299℃

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.{{773497:0}}Z 1 [ERROR] [MY-0{{13090:0}}] [InnoDB] InnoDB:
Unsupported redo log format (0). The redo log was created before MySQL
5.7.9
2018-07-08T09:42:27.{{773552:0}}Z 1 [ERROR] [MY-0{{12930:0}}]
[InnoDB] InnoDB: Plugin initialization aborted with error Generic error.
2018-07-08T09:42:28.{{377597:0}}Z 1 [ERROR] [MY-0{{11013:0}}] [Server] Failed to initialize DD Storage Engine.
2018-07-08T09:42:28.{{378527:0}}Z 0 [ERROR] [MY-0{{10020:0}}] [Server] Data Dictionary initialization failed.
2018-07-08T09:42:28.{{378601:0}}Z 0 [ERROR] [MY-0{{10119:0}}] [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 {{594580226:0}} Jul 7 22:35 mysql-8.0.11-el7-x86_64.tar.gz
-rw-r--r--. 1 root root {{328563044:0}} Jul 8 15:05 mysql-5.6.40-linux-glibc2.12-x86_64.tar.gz
-rw-r--r--. 1 root root {{712729170:0}} 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

2018-07-09T04:24:20.0{{41509:0}}Z 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-0{{10931:0}}] [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。

— 此内容引用自https://zhuanlan.zhihu.com/p/39341418

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