Upgrade MySQL 5.1 to 5.5.36 in CentOS

This article records the process of upgrading MySQL 5.1 to 5.5.36 in the CentOS 6.4 environment. I hope it can be a reference for everyone.

1. For safety reasons, you first need to back up the original data

2. Uninstall the original MySQL, stop the original MySQL service first, then search find / -name mysql

[root@linuxidc /]# find / -name mysql

/var/lib/mysql

/var/lib/mysql/mysql

/usr/lib64/mysql

and remove the service

[root@linuxidc /]# rm -rf /var/lib/mysql

[root@linuxidc /]# rm -rf /var/lib/mysql

[root@linuxidc /]# rm -rf /usr/lib64/mysql

3. Install cmake

[root@linuxidc download]# wget http://www.cmake.org/files/v2.8/cmake-2.8.12.2.tar.gz

[root@linuxidc download]# tarx zvfc cmake-2.8.12.2.tar.gz

[root@linuxidc download]# cd cmake-2.8.12.2

[root@linuxidc cmake-2.8.12.2]# ./configure

[root@linuxidc cmake-2.8.12.2]# make && make install

4. Download and install MySQL 5.5.36

[root@linuxidc download]# wget http://dev.mysql.com/get/Downloads/MySQL-5.5/mysql-5.5.36.tar.gz

[root@linuxidc download]# tar xzvf mysql-5.5.36.tar.gz

[root@linuxidc download]# cd mysql-5.5.36

[root@linuxidc mysql-5.5.36]# cmake -DCMAKE_INSTALL_PREFIX=/usr/local/mysql -DEXTRA_CHARSETS=all -DDEFAULT_CHARSET=utf8 -DDEFAULT_COLLATION=utf8_general_ci -DWITH_READLINE=1 -DWITH_SSL=system -DWITH_ZLIB=system -DWITH_EMBEDDED_SERVER=1 -DENABLED_LOCAL_INFILE=1 -DMYSQL_DATADIR=/home/mysql

[root@linuxidc mysql-5.5.36]# make && make install

An error occurred during the cmake process, prompting Could NOT find Curses (missing: CURSES_LIBRARY CURSES_INCLUDE_PATH)

Just execute the following code, after execution, continue with cmake, then make && make install

[root@localhost mysql-5.5.36]# rm CMakeCache.txt

[root@localhost mysql-5.5.36]# yum install ncurses-devel

5. Next, you need to copy the previously backed up my.cnf file to /etc/my.cnf

MySQL will read /etc/my.cnf /etc/mysql/my.cnf /usr/local/mysql/etc/my.cnf /.my.cnf. The file on the left has the highest priority.

6. After configuration, we start MySQL and find a problem. Starting MySQL prompts: The server quit without updating PID file (…) failed

Check the log file address /var/log/mysqld.log set in the my.cnf file. The error message is as follows

170715 12:31:36 mysqld_safe mysqld from pid file /var/lib/mysql/linuxidc.pid ended

170715 12:57:48 mysqld_safe Starting mysqld daemon with databases from /home/mysql

170715 12:57:48 InnoDB: The InnoDB memory heap is disabled

170715 12:57:48 InnoDB: Mutexes and rw_locks use GCC atomic builtins

170715 12:57:48 InnoDB: Compressed tables use zlib 1.2.3

170715 12:57:48 InnoDB: Initializing buffer pool, size = 128.0M

170715 12:57:48 InnoDB: Completed initialization of buffer pool

170715 12:57:48 InnoDB: highest supported file format is Barracuda.

170715 12:57:48 InnoDB: Waiting for the background threads to start

170715 12:57:49 InnoDB: 5.5.36 started; log sequence number 2645823

170715 12:57:49 [ERROR] /usr/local/mysql/bin/mysqld: unknown variable 'default-character-set=utf8'

170715 12:57:49 [ERROR] Aborting

This error is caused by the character set of [mysqld] in the /etc/my.cnf configuration file. The solution is to change default-character-set=utf8 to character_set_server=utf8

7. Connect to mysql through the mysql -u root -p command. (We have installed MySQL before, and the database files are still there, so there is no need to add users to set permissions)

An error message appeared: ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock'

The reason for the error is that our mysql.sock file is in the /usr/lib/mysql/ folder

You can try to connect through the following command and check the mysql version

[root@linuxidc var]# mysql -u root -p -S /usr/lib/mysql/mysql.sock

mysql> select version();

+-----------+

| version() |

+-----------+

| 5.5.36 |

+-----------+

1 row in set (0.00 sec)