Centos使用MySQL工具Percona Toolkit

安装Percona Toolkit 的Repo 得以支持直接用yum 安装二进制包

yum install -y https://www.percona.com/redir/downloads/percona-release/redhat/latest/percona-release-0.1-4.noarch.rpm

yum install -y percona-toolkit

改MySQL表结构DDL pt-online-schema-change

pt-online-schema-change -u root -h 10.8.8.8 -p password --alter='add column vid int ' --execute A=utf8,D=database,t=table

D=database 库名

t=table 表名

–alter=’add column vid int ‘ 要执行的语句

注意：

mysql版本5.5 数据库和表都是utf8编码,

表的字段注释维中文

在执行 pt-online-schema-change的时候一定的加参数 -A=utf-8

Operation, tries, wait:

copy_rows, 10, 0.25

create_triggers, 10, 1

drop_triggers, 10, 1

swap_tables, 10, 1

update_foreign_keys, 10, 1

Altering `wwek`.`wwek_users`...

Creating new table...

Created new table wwek._wwek_users_new OK.

Altering new table...

Altered `wwek`.`_wwek_users_new` OK.

2015-09-18T10:56:16 Creating triggers...

2015-09-18T10:56:16 Created triggers OK.

2015-09-18T10:56:16 Copying approximately 183066 rows...

Copying `wwek`.`wwek_users`: 30% 01:10 remain

Copying `wwek`.`wwek_users`: 49% 01:01 remain

Copying `wwek`.`wwek_users`: 63% 00:51 remain

Copying `wwek`.`wwek_users`: 76% 00:37 remain

Copying `wwek`.`wwek_users`: 88% 00:20 remain

2015-09-18T10:59:03 Copied rows OK.

2015-09-18T10:59:03 Swapping tables...

2015-09-18T10:59:03 Swapped original and new tables OK.

2015-09-18T10:59:03 Dropping old table...

2015-09-18T10:59:04 Dropped old table `wwek`.`_wwek_users_old` OK.

2015-09-18T10:59:04 Dropping triggers...

2015-09-18T10:59:04 Dropped triggers OK.

Successfully altered `wwek`.`wwek_users`.

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