mysql_tools_pt_percona_tookits

目录

1.下载安装

2.部分工具

   - pt-table-checksum

   - pt-table-sync

   - pt-pmp

 

 

1.下载安装

 下载地址:http://www.percona.com/software/percona-toolkit rpm安装包

 依赖:perl-IO

 安装:sudo rpm -ivh percona-toolkit-2.2.8-1.noarch.rpm

2.部分工具

   percona-toolkits是一个整合的安装包,包含很多小工具。详见http://www.percona.com/doc/percona-toolkit/2.2/,分不同小工具来测试

 pt-table-checksum

   作用:检查mysql主从数据是否一致

   用法:pt-table-checksum [OPTIONS] [DSN]

   参数:

    u=‘‘,p=‘‘,h=‘127.0.0.1‘,P=‘3306‘,登陆参数,用户需要有

GRANT CREATE,SELECT,DELETE,UPDATE,INSERT, PROCESS, SUPER, REPLICATION SLAVE ON *.* TO repl@192.168.% IDENTIFIED BY 123456;

    --ask-pass:连接时手动输入密码

    --[no]check-binlog-format:不检查主从服务器日志格式是否相同。默认检查。binlog-format是row,报错示例:

sudo /usr/bin/pt-table-checksum u=repl,P=3306,h=192.168.1.241,p=123456

Replica hd-dm-test03 has binlog_format MIXED which could cause pt-table-checksum to break replication. Please read "Replicas using row-based replication" in the LIMITATIONS section of the tools documentation. If you understand the risks, specify --no-check-binlog-format to disable this check. Replica hd-dm-test02 has binlog_format MIXED which could cause pt-table-checksum to break replication. Please read "Replicas using row-based replication" in the LIMITATIONS section of the tools documentation. If you understand the risks, specify --no-check-binlog-format to disable this check.

    --check-interval:每次check的时间间隔,默认1s。

    --[no]check-plan:检查计划,默认yes。

    --[no]check-replication-filters:不检查复制过滤器,默认检查。需要设置启动--no-check-replication-filters ,启用--databases参数,指定检查的库

sudo /usr/bin/pt-table-checksum --no-check-binlog-format u=repl,P=3306,h=192.168.1.241,p=‘123456‘
06-30T07:07:08 Replication filters are set on these hosts:
  hd-dm-test03
    replicate_ignore_db = mysql
  hd-dm-test02
    replicate_ignore_db = mysql
Please read the --check-replication-filters documentation to learn how to solve this problem. at /usr/bin/pt-table-checksum line 9535.

    --check-slave-lag:

    --replicate:输出结果至表checksums。缺少建表权限,删改查等权限,加上就行;

sudo /usr/bin/pt-table-checksum --no-check-binlog-format --no-check-replication-filters --databases=mydb --replicate=mydb.checksums u=repl,P=3306,h=192.168.1.241,p=‘123456‘
06-30T07:15:01 --create-replicate-table failed: DBD::mysql::db do failed: CREATE command denied to user ‘repl‘@‘192.168.1.241‘ for table ‘checksums‘ at /usr/bin/pt-table-checksum line 11036.
06-30T07:15:01 --replicate table checksums does not exist and it cannot be created automatically.  You need to create the table.

   输出:

    TS: 完成检测的时间;

    ERRORS:检测过程碰到的错误数;

    DIFFS:差异点

    ROWS:表行数

    CHUNKS:被划分到表中的块的数据,就是page

    SKIPPED:由于错误或警告或过大,则跳过块的数目。

    TIME:检查消耗的时间,单位s

    TABLE:被检查的表名

            TS ERRORS  DIFFS     ROWS  CHUNKS SKIPPED    TIME TABLE
06-30T07:20:16      0      0        3       1       0   0.016 mydb.people
06-30T07:20:16      0      0        3       1       0   0.014 mydb.people2
06-30T07:20:16      0      0        3       1       0   0.015 mydb.people_car
06-30T07:20:16      0      0        3       1       0   0.014 mydb.people_car2
06-30T07:20:16      0      0        0       1       0   0.016 mydb.t2

查看表中数据:

    db:库名,ta1:表名,chunk:表占用的page数,chunk_time:检查消耗的时间,chunk_index:检查的索引页,this_crc:从的校验码,master_crc:主的校验码,this_cnt:从的行数,master_cnt:主的行数,ts:检测完成的时间点

mysql> select * from checksums;
+------+-------------+-------+------------+-------------+----------------+----------------+----------+----------+------------+------------+---------------------+
| db   | tbl         | chunk | chunk_time | chunk_index | lower_boundary | upper_boundary | this_crc | this_cnt | master_crc | master_cnt | ts                  |
+------+-------------+-------+------------+-------------+----------------+----------------+----------+----------+------------+------------+---------------------+
| mydb | people      |     1 |   0.000785 | NULL        | NULL           | NULL           | 8255d963 |        3 | 8255d963   |          3 | 2014-06-30 07:20:16 |
| mydb | people2     |     1 |    0.00064 | NULL        | NULL           | NULL           | 8255d963 |        3 | 8255d963   |          3 | 2014-06-30 07:20:16 |
| mydb | people_car  |     1 |   0.000883 | NULL        | NULL           | NULL           | 4f6817d5 |        3 | 4f6817d5   |          3 | 2014-06-30 07:20:16 |
| mydb | people_car2 |     1 |   0.000696 | NULL        | NULL           | NULL           | 4f6817d5 |        3 | 4f6817d5   |          3 | 2014-06-30 07:20:16 |
| mydb | t2          |     1 |   0.000689 | NULL        | NULL           | NULL           | 0        |        0 | 0          |          0 | 2014-06-30 07:20:16 |
+------+-------------+-------+------------+-------------+----------------+----------------+----------+----------+------------+------------+---------------------+

    

    

    

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