MySQL 5.6 --> 5.7 的升级
一、环境描述
- 数据库版本：MySQL5.6.20（GA）
- 数据库软件目录：/usr/local/mysql
- my.cnf位置：/etc/my.cnf
- 数据库data目录：/data/
- 慢日志目录：/data/mysql-server.err
二、升级前准备
1、关闭MySQL，便于完成数据的备份与替换
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$ service mysqld stop
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Shutting down MySQL.. SUCCESS!
2、备份my.cnf、basedir、datadir
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$ cd /etc/
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$ cp -rp my.cnf my_56_old.cnf
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$ cd /usr/local/
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$ cp -rp mysql/ mysql_56_old
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$ cd /data
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$ cp -rp /data/ /data_56_old
3、解压新版本的MySQL
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$ tar -zxvf mysql-5.7.17-linux-glibc2.5-x86_64.tar.gz -C /usr/local/
4、删除basedir并替换
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$ cd /usr/local/
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$ rm -rf mysql
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$ mv mysql-5.7.17-linux-glibc2.5-x86_64/ mysql
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$ chown -R mysql: /usr/local/mysql
5、替换5.7的my.cnf
6、替换新版mysqld启动脚本
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$ cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld
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cp: overwrite `/etc/init.d/mysqld'? y
三、升级
1、启动MySQL
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$ service mysqld start
启动时常见参数错误
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2017-09-13T16:08:04.043612Z 0 [ERROR] InnoDB: Cannot open '/data/ib_buffer_pool' for reading: No such file or directory
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2017-09-13T16:08:04.043930Z 0 [Note] Plugin 'FEDERATED' is disabled.
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2017-09-13T16:08:04.096185Z 0 [Warning] System table 'plugin' is expected to be transactional.
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2017-09-13T16:08:04.096579Z 0 [ERROR] unknown variable 'innodb_additional_mem_pool_size=512M'
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2017-09-13T16:08:04.096602Z 0 [ERROR] Aborting
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7
2017-09-13T16:11:03.329138Z 0 [ERROR] unknown variable 'thread_concurrency=16'
2、注释或修改相应参数后重启服务
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$ service mysqld start
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Starting MySQL.. SUCCESS!
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$ ps -ef | grep mysql
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root 7926 1 0 00:12 pts/2 00:00:00 /bin/sh /usr/local/mysql//bin/mysqld_safe --datadir=/data/ --pid-file=/data/mysqld.pid
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mysql 8542 7926 1 00:12 pts/2 00:00:00 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql/ --datadir=/data/ --plugin-dir=/usr/local/mysql//lib/plugin --user=mysql --log-error=/data/mysql-server.err --pid-file=/data/mysqld.pid --socket=/data/mysql.sock --port=3306
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root 8575 3512 0 00:12 pts/2 00:00:00 grep mysql
3、升级数据字典
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$ /usr/local/mysql/bin/mysql_upgrade -uroot -p123456
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mysql_upgrade: [Warning] Using a password on the command line interface can be insecure.
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Checking if update is needed.
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Checking server version.
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Running queries to upgrade MySQL server.
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Checking system database.
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mysql.columns_priv OK
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mysql.db OK
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mysql.engine_cost OK
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mysql.event OK
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mysql.func OK
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mysql.general_log OK
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mysql.gtid_executed OK
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mysql.help_category OK
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mysql.help_keyword OK
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mysql.help_relation OK
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mysql.help_topic OK
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mysql.innodb_index_stats OK
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mysql.innodb_table_stats OK
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mysql.ndb_binlog_index OK
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mysql.plugin OK
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mysql.proc OK
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mysql.procs_priv OK
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mysql.proxies_priv OK
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mysql.server_cost OK
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mysql.servers OK
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mysql.slave_master_info OK
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mysql.slave_relay_log_info OK
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mysql.slave_worker_info OK
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mysql.slow_log OK
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mysql.tables_priv OK
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mysql.time_zone OK
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mysql.time_zone_leap_second OK
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mysql.time_zone_name OK
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mysql.time_zone_transition OK
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mysql.time_zone_transition_type OK
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mysql.user OK
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Upgrading the sys schema.
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Checking databases.
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employees.departments OK
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employees.dept_emp OK
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employees.dept_manager OK
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employees.employees OK
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employees.expected_values OK
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employees.found_values OK
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employees.salaries OK
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employees.tchecksum OK
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employees.titles OK
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sys.sys_config OK
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Upgrade process completed successfully.
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Checking if update is needed.
4、启动服务
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$ service mysqld restart
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Shutting down MySQL.. SUCCESS!
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Starting MySQL. SUCCESS!