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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 tool‘s 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 tool‘s 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 = mysqlPlease 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 TABLE06-30T07:20:16 0 0 3 1 0 0.016 mydb.people06-30T07:20:16 0 0 3 1 0 0.014 mydb.people206-30T07:20:16 0 0 3 1 0 0.015 mydb.people_car06-30T07:20:16 0 0 3 1 0 0.014 mydb.people_car206-30T07:20:16 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 |+------+-------------+-------+------------+-------------+----------------+----------------+----------+----------+------------+------------+---------------------+