内容简介:列出几种常用场景,并进行分析实战测试七、kill掉非系统用户的select,update,delete开头,且执行时间超过3秒,且不是被locked住 的 connection八、kill掉非系统用户,指定state(Locked、login、Updating、Sorting for order等状态),且执行时间超过3秒 的 connection
列出几种常用场景,并进行分析实战测试
特殊、 打印出执行时间超过3秒的connection,仅仅打印,不kill
- 每2秒循环一次,超过10秒就退出pt-kill程序
pt-kill --host xx.xxx.126.164 --port 3306 --user pt_kill --ask-pass --print --ignore-self --busy-time=3 --interval 2 --run-time=10 重点注意: 这里的--busy-time=3,指的是Command=Query的连接,其他的并不会被匹配哦 , 所以一般情况下删除的都是比较安全的用户thread 重点注意2: ddl,dml,select,都是属于Command=Query +------+---------------+----------------------+--------------+------------------+--------+---------------------------------------------------------------+-------------------------------------------+ | Id | User | Host | db | Command | Time | State | Info | +------+---------------+----------------------+--------------+------------------+--------+---------------------------------------------------------------+-------------------------------------------+ | 3 | repl | xx.xxx.126.166:60528 | NULL | Binlog Dump GTID | 492777 | Master has sent all binlog to slave; waiting for more updates | NULL | | 4 | repl | xx.xxx.126.165:48604 | NULL | Binlog Dump GTID | 492765 | Master has sent all binlog to slave; waiting for more updates | NULL | | 502 | job_heartbeat | xx.xxx.2.217:34626 | heartbeat_db | Sleep | 0 | | NULL | | 1053 | dbadmin | localhost | heartbeat_db | Query | 1 | altering table | alter table heartbeat add column ts2 date| | 1055 | pt_kill | xx.xxx.126.166:63167 | NULL | Sleep | 1 | | NULL | | 1056 | dbadmin | localhost | NULL | Query | 0 | starting | show processlist | +------+---------------+----------------------+--------------+------------------+--------+---------------------------------------------------------------+-------------------------------------------+ +------+---------------+----------------------+--------------+------------------+--------+---------------------------------------------------------------+-------------------------------------------------+ | Id | User | Host | db | Command | Time | State | Info | +------+---------------+----------------------+--------------+------------------+--------+---------------------------------------------------------------+-------------------------------------------------+ | 3 | repl | xx.xxx.126.166:60528 | NULL | Binlog Dump GTID | 492716 | Master has sent all binlog to slave; waiting for more updates | NULL | | 4 | repl | xx.xxx.126.165:48604 | NULL | Binlog Dump GTID | 492704 | Master has sent all binlog to slave; waiting for more updates | NULL | | 502 | job_heartbeat | xx.xxx.2.217:34626 | heartbeat_db | Sleep | 0 | | NULL | | 1053 | dbadmin | localhost | heartbeat_db | Query | 3 | updating | update heartbeat set ts = '2018-09-06 00:07:58'| | 1055 | pt_kill | xx.xxx.126.166:63167 | NULL | Sleep | 0 | | NULL | | 1056 | dbadmin | localhost | NULL | Query | 0 | starting | show processlist | +------+---------------+----------------------+--------------+------------------+--------+---------------------------------------------------------------+-------------------------------------------------+ +------+---------------+----------------------+--------------+------------------+--------+---------------------------------------------------------------+-------------------+ | Id | User | Host | db | Command | Time | State | Info | +------+---------------+----------------------+--------------+------------------+--------+---------------------------------------------------------------+-------------------+ | 3 | repl | xx.xxx.126.166:60528 | NULL | Binlog Dump GTID | 492613 | Master has sent all binlog to slave; waiting for more updates | NULL | | 4 | repl | xx.xxx.126.165:48604 | NULL | Binlog Dump GTID | 492601 | Master has sent all binlog to slave; waiting for more updates | NULL | | 502 | job_heartbeat | xx.xxx.2.217:34626 | heartbeat_db | Sleep | 0 | | NULL | | 1053 | dbadmin | localhost | heartbeat_db | Query | 3 | User sleep | select 1,sleep(4) | | 1055 | pt_kill | xx.xxx.126.166:63167 | NULL | Sleep | 1 | | NULL | | 1056 | dbadmin | localhost | NULL | Query | 0 | starting | show processlist | +------+---------------+----------------------+--------------+------------------+--------+---------------------------------------------------------------+-------------------+ +------+---------------+----------------------+--------------+------------------+--------+---------------------------------------------------------------+------------------+ | Id | User | Host | db | Command | Time | State | Info | +------+---------------+----------------------+--------------+------------------+--------+---------------------------------------------------------------+------------------+ | 3 | repl | xx.xxx.126.166:60528 | NULL | Binlog Dump GTID | 492740 | Master has sent all binlog to slave; waiting for more updates | NULL | | 4 | repl | xx.xxx.126.165:48604 | NULL | Binlog Dump GTID | 492728 | Master has sent all binlog to slave; waiting for more updates | NULL | | 502 | job_heartbeat | xx.xxx.2.217:34626 | heartbeat_db | Sleep | 0 | | NULL | | 1053 | dbadmin | localhost | heartbeat_db | Query | 4 | starting | rollback | | 1055 | pt_kill | xx.xxx.126.166:63167 | NULL | Sleep | 0 | | NULL | | 1056 | dbadmin | localhost | NULL | Query | 0 | starting | show processlist | +------+---------------+----------------------+--------------+------------------+--------+---------------------------------------------------------------+------------------+
一、打印出sleep时间超过3秒的connection,仅仅打印,不kill
- 每2秒循环一次,无限循环下去
pt-kill --host xx.xxx.126.164 --port 3306 --user pt_kill --ask-pass --print --ignore-self --idle-time=3 --interval 2
- 每2秒循环一次,超过10秒就退出pt-kill程序
pt-kill --host xx.xxx.126.164 --port 3306 --user pt_kill --ask-pass --print --ignore-self --idle-time=3 --interval 2 --run-time=10
二、kill掉query语句中带有sleep关键字(不区分大小写)的connection, 且Time超过3秒
pt-kill --host xx.xxx.126.164 --port 3306 --user pt_kill --ask-pass --print --ignore-self --interval 2 --match-info "(?i-xsm:(sleep))" --busy-time=3 --kill --victims all
三、kill掉非系统用户的select开头,且执行时间超过3秒的 connection
pt-kill --host xx.xxx.126.164 --port 3306 --user pt_kill --ask-pass --ignore-self --print --interval 2 --match-info "(?i-xsm:^(select))" --ignore-user="root|repl" --busy-time=3 --kill --victims all
四、kill掉非系统用户的select,update,delete开头,且执行时间超过3秒的 connection
pt-kill --host xx.xxx.126.164 --port 3306 --user pt_kill --ask-pass --ignore-self --print --interval 2 --match-info "(?i-xsm:^(select))|(?i-xsm:^(update))|(?i-xsm:^(delete))" --ignore-user="root|repl" --busy-time=3 --kill --victims all
五、kill掉指定特征的query语句
- kill掉非系统用户,且query语句中同时包含heartbeat 和 where ,且heartbeat在前where在后,且执行时间超过3秒的 connection
pt-kill --host xx.xxx.126.164 --port 3306 --user pt_kill --ask-pass --ignore-self --print --interval 2 --match-info ".*heartbeat.*where.*" --ignore-user="root|repl" --busy-time=3 --kill --victims all # 2018-11-15T10:38:03 KILL 1053 (Query 27 sec) select *,sleep(10) from heartbeat where id < '1000000000' # 2018-11-15T10:38:05 KILL 1053 (Query 29 sec) select *,sleep(10) from heartbeat where id < '1000000000' # 2018-11-15T10:38:07 KILL 1053 (Query 31 sec) select *,sleep(10) from heartbeat where id < '1000000000' # 2018-11-15T10:38:09 KILL 1053 (Query 33 sec) select *,sleep(10) from heartbeat where id < '1000000000'
六、kill掉非系统库的select开头,且执行时间超过3秒的 connection
pt-kill --host xx.xxx.126.164 --port 3306 --user pt_kill --ask-pass --ignore-self --print --interval 2 --match-info "(?i-xsm:^(select))" --ignore-db="mysql|information_schema" --ignore-user="root|repl" --busy-time=3 --kill --victims all
七、kill掉非系统用户的select,update,delete开头,且执行时间超过3秒,且不是被locked住 的 connection
pt-kill --host xx.xxx.126.164 --port 3306 --user pt_kill --ask-pass --ignore-self --print --interval 2 --match-info "(?i-xsm:^(select))|(?i-xsm:^(update))|(?i-xsm:^(delete))" --ignore-state="Locked" --ignore-user="root|repl" --busy-time=3 --kill --victims all
八、kill掉非系统用户,指定state(Locked、login、Updating、Sorting for order等状态),且执行时间超过3秒 的 connection
- 指定Locked的connection删除掉
pt-kill --host xx.xxx.126.164 --port 3306 --user pt_kill --ask-pass --ignore-self --print --interval 2 --match-info "(?i-xsm:^(select))|(?i-xsm:^(update))|(?i-xsm:^(delete))" --match-state="Locked" --ignore-user="root|repl" --busy-time=3 --kill --victims all
九、kill掉非系统用户,指定Command(Query、Sleep、Binlog Dump、Connect等状态),且执行时间超过3秒 的 connection
- kill掉指定Connect的command connection
pt-kill --host xx.xxx.126.164 --port 3306 --user pt_kill --ask-pass --ignore-self --print --interval 2 --match-info "(?i-xsm:^(select))|(?i-xsm:^(update))|(?i-xsm:^(delete))" --match-command="Connect" --ignore-user="root|repl" --busy-time=3 --kill --victims all
十、kill掉指定来源host ip ,且select开头的,且执行时间超过3s的connection
pt-kill --host xx.xxx.126.164 --port 3306 --user pt_kill --ask-pass --ignore-self --print --interval 2 --match-info "(?i-xsm:^(select))" --ignore-host="x.x.x.x" --ignore-user="root|repl" --busy-time=3 --kill --victims all
十一、kill掉非系统用户,Command=Sleep,且空闲时间为3s的connection
pt-kill --host xx.xxx.126.164 --port 3306 --user pt_kill --ask-pass --ignore-self --print --interval 2 --ignore-user="root|repl" --idle-time=3 --kill --victims all
十二、kill掉非系统用户,指定特征的query,在后台运行,并打印日志
pt-kill --host xx.xxx.126.164 --port 3306 --user pt_kill --ask-pass --ignore-self --print --interval 2 --match-info ".*heartbeat.*where.*" --ignore-user="root|repl" --busy-time=3 --daemonize --log='/root/kill.log' --kill --victims all
十三、—victims的用法
- 背景
pid:1103 , 是最早开启事务的空闲进程 T1 pid:1095 , 是第二早开启事务的ddl进程 T2 pid:502 , 是最后一个开启事务的dml进程 T3 事务顺序是: T1 锁住了 T2,T3, T2锁住了T3 , T3被T1,T2锁住 +------+---------------+----------------------+--------------+------------------+--------+---------------------------------------------------------------+---------------------------------------------------------+ | Id | User | Host | db | Command | Time | State | Info | +------+---------------+----------------------+--------------+------------------+--------+---------------------------------------------------------------+---------------------------------------------------------+ | 3 | repl | xx.xxx.126.166:60528 | NULL | Binlog Dump GTID | 507504 | Master has sent all binlog to slave; waiting for more updates | NULL | | 4 | repl | xx.xxx.126.165:48604 | NULL | Binlog Dump GTID | 507492 | Master has sent all binlog to slave; waiting for more updates | NULL | | 502 | job_heartbeat | xx.xxx.2.217:34626 | heartbeat_db | Query | 328 | Waiting for table metadata lock | insert into heartbeat(ts) values('2018-11-15 13:43:50') | | 1095 | dbadxxx | localhost | heartbeat_db | Query | 329 | Waiting for table metadata lock | alter table heartbeat add column ts3 date | | 1103 | dbadxxx | localhost | heartbeat_db | Sleep | 341 | | NULL | | 1104 | dbadxxx | localhost | NULL | Query | 0 | starting | show processlist | +------+---------------+----------------------+--------------+------------------+--------+---------------------------------------------------------------+---------------------------------------------------------+ 6 rows in set (0.00 sec)
- —match-command=”Query|Sleep” —victims oldest —busy-time=3
只kill最老的command为Query|Sleep的最老的链接
pt-kill --host xx.xxx.126.164 --port 3306 --user pt_kill --ask-pass --ignore-self --print --interval 2 --ignore-user="root|repl" --match-command="Query|Sleep" --busy-time=3 --victims oldest Enter MySQL password: # 2018-11-15T13:49:07 KILL 1103 (Sleep 330 sec) NULL # 2018-11-15T13:49:09 KILL 1103 (Sleep 332 sec) NULL
- —match-command=”Query|Sleep” —victims all —busy-time=3
kill 所有command=”Query|Sleep” 的所有链接
Enter MySQL password: # 2018-11-15T13:48:41 KILL 1103(Sleep 304sec)NULL # 2018-11-15T13:48:41 KILL 1095 (Query 292 sec) alter table heartbeat add column ts3 date # 2018-11-15T13:48:41 KILL 502 (Query 291 sec) insert into heartbeat(ts) values('2018-11-15 13:43:50') # 2018-11-15T13:48:41 KILL 1104 (Sleep 262 sec) NULL
- —match-command=”Query” —victims all —busy-time=3
kill 所有 command=”Query”(默认不填也就是Query)的所有链接
Enter MySQL password: # 2018-11-15T13:46:59 KILL 1095(Query 190sec)alter table heartbeat add column ts3 date # 2018-11-15T13:46:59 KILL 502 (Query 189 sec) insert into heartbeat(ts) values('2018-11-15 13:43:50')
- —match-command=”Query” —victims oldest —busy-time=3
kill 所有 command=”Query”(默认不填也就是Query)的最老的链接
Enter MySQL password: # 2018-11-15T13:59:01 KILL 1095(Query 912sec)alter table heartbeat add column ts3 date
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