linux mysql5.1升级5.5_mysql5.1升级5.5操作步骤

参数的更改：

#skip-locking 在5.5里已经不识别了，改成

skip-external-locking

#log-long-format 在5.5里已经不识别了，改成

log-short-format

#log_slow_queries 在5.5里已经不识别了，改成

slow-query-log

#default-character-set = utf8 在5.5里已经不识别了，改成

character-set-server = utf8

basedir = /usr/local/mysql5.5

datadir =/usr/local/mysql5.5/data

innodb_data_home_dir = /usr/local/mysql5.5/data

innodb_log_group_home_dir = /usr/local/mysql5.5/data

user = mysql

#innodb_file_io_threads已经不识别了，改成

innodb_read_io_threads = 8

innodb_write_io_threads = 8

innodb_io_capacity = 2000

innodb_file_format = Barracuda

##增加半同步配置

rpl_semi_sync_master_enabled = 1

rpl_semi_sync_master_timeout = 1000

rpl_semi_sync_slave_enabled = 1

[Warning] --myisam_max_extra_sort_file_size is deprecated and does nothing in this version.It will be removed in a

future release.

第一步：

/usr/local/mysql5.5/bin/mysqld --defaults-file=/etc/my.cnf --skip-grant-tables &

第二步：执行更新程序

[root@vm02 mysql5.5]# bin/mysql_upgrade

Looking for 'mysql' as: bin/mysql

Looking for 'mysqlcheck' as: bin/mysqlcheck

Running 'mysqlcheck' with connection arguments: '--port=3306' '--socket=/tmp/mysql.sock'

Running 'mysqlcheck' with connection arguments: '--port=3306' '--socket=/tmp/mysql.sock'

mysql.columns_priv                                 OK

mysql.db                                           OK

mysql.event                                        OK

mysql.func                                         OK

mysql.general_log                                  OK

mysql.help_category                                OK

mysql.help_keyword                                 OK

mysql.help_relation                                OK

mysql.help_topic                                   OK

mysql.host                                         OK

mysql.ndb_binlog_index                             OK

mysql.plugin                                       OK

mysql.proc                                         OK

mysql.procs_priv                                   OK

mysql.servers                                      OK

mysql.slow_log                                     OK

mysql.tables_priv                                  OK

mysql.time_zone                                    OK

mysql.time_zone_leap_second                        OK

mysql.time_zone_name                               OK

mysql.time_zone_transition                         OK

mysql.time_zone_transition_type                    OK

mysql.user                                         OK

test.heartbeat                                     OK

test.log20111127                                   OK

test.log20111128                                   OK

test.log20111129                                   OK

test.log20111130                                   OK

test.log20111201                                   OK

test.log20111202                                   OK

test.log20111203                                   OK

test.log20111204                                   OK

test.log20111205                                   OK

test.log20111206                                   OK

test.log20111207                                   OK

test.t1                                            OK

test.t2                                            OK

Running 'mysql_fix_privilege_tables'...

OK

第三步：

/usr/local/mysql5.5/bin/mysqladmin -uroot -p123456 shutdown

第四步：

/usr/local/mysql5.5/bin/mysqld_safe  --defaults-file=/etc/my.cnf --user=mysql &

mysql> select version();

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

| version()  |

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

| 5.5.19-log |

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

1 row in set (0.00 sec)

mysql> select @@innodb_version;

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

| @@innodb_version |

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

| 1.1.8            |

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

1 row in set (0.00 sec)

mysql> install plugin rpl_semi_sync_master soname 'semisync_master.so';

mysql> SET GLOBAL rpl_semi_sync_master_enabled=ON;

mysql> install plugin rpl_semi_sync_slave soname 'semisync_slave.so';

mysql> SET GLOBAL rpl_semi_sync_slave_enabled =ON;

第一次执行完后，就无需再执行了。

至此，升级过程完毕。