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HomeDatabaseMysql TutorialMysql5升级到Mysql5.5的方法_MySQL

安装5.5依赖安装包

代码如下


yum install -y autoconf* automake* zlib* libxml* ncurses-devel* libgcrypt* libtool* openssl*


  安装cmake

代码如下


yum install -y cmake


  在升级前,建议先将之前5.1的mysql及数据库目录备份一下

  停止掉mysql

代码如下


service mysql stop


升级mysql 5.5.36

代码如下


http://download.csdn.net/download/cike121272604/6943279
tar xf mysql-5.5.36.tar.gz
cd mysql-5.5.36
cmake -DCMAKE_INSTALL_PREFIX=/usr/local/mysql -DSYSCONFDIR=/etc -DMYSQL_DATADIR=/usr/local/mysql/var 
-DMYSQL_TCP_PORT=3306 -DMYSQL_UNIX_ADDR=/tmp/mysqld.sock -DMYSQL_USER=mysql -DEXTRA_CHARSETS=all 
-DWITH_READLINE=1 -DWITH_SSL=system -DWITH_EMBEDDED_SERVER=1 -DENABLED_LOCAL_INFILE=1 
-DWITH_INNOBASE_STORAGE_ENGINE=1
make && make install


 删除/etc/下的my.cnf配置文件

代码如下


rm -rf /etc/my.cnf


拷贝5.5的配置文件

代码如下


cp support-files/my-huge.cnf /etc/my.cnf


尝试启动一下

代码如下


service mysql start


  执行更新程序并重启mysql

代码如下


/usr/local/mysql/bin/mysql_upgrade


  如果一路OK就没事儿,但要是出了错误,请参考我另外一篇文章 mysql5.5升级过程中mysql_upgrade失败的问题

  查看下现在的mysql版本

代码如下


cat mysql_upgrade_info


  好了,升级工作完成。

  再附升级失败问题解决

  在升级mysql5.5过程中,执行/usr/local/mysql/bin/mysql_upgrade

  提示:

代码如下


Looking for 'mysql' in: /usr/local/mysql/bin/mysql
Looking for 'mysqlcheck' in: /usr/local/mysql/bin/mysqlcheck
Running 'mysqlcheck'...
/usr/local/mysql/bin/mysqlcheck: Got error: 1064: You have an error in your SQL syntax; 
check the manual that corresponds to your MySQL server version for the right syntax to use 
near 'FOR UPGRADE' at line 1 when executing 'CHECK TABLE ... FOR UPGRADE'
FATAL ERROR: Upgrade failed


  想起之前5.1好像是有密码的!这儿换种方式尝试

代码如下


/usr/local/mysql/bin/mysql_upgrade -S /var/data/mysql.sock -uroot -p


  这个也不行了,突然想到出奇招,还是使用5.5的二进制程序,然后更改启动参数,因为我只想要把data目录下的表结构升级而已,必须指定的参数只是data目录,于是我做了如下尝试

  # 启用 --skip-grant-tables参数避开检查,先启动再说

代码如下


/usr/local/mysql/bin/mysqld --datadir=/usr/local/mysql/var/ --user=mysql --skip-grant-tables &


 # 看上去成功了

  # 中间报了一些innodb的错误,不去理会,应该是配置或是这个半阴半阳状态下问题,这个以后再解决

  # 接下来停止这个服务 mysqladmin shutdown 之,然后以正常参数启动mysqld服务…… 修改些my.cnf中的配置参数,以适合mysql5.5

  一句话总结:

代码如下

/usr/local/mysql/bin/mysqld --datadir=/usr/local/mysql/var/ --user=mysql --skip-grant-tables &


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