{"id":1095,"date":"2026-03-26T15:19:47","date_gmt":"2026-03-26T07:19:47","guid":{"rendered":"https:\/\/yunyanglib.cn\/?p=1095"},"modified":"2026-03-26T15:19:48","modified_gmt":"2026-03-26T07:19:48","slug":"%e3%80%90mysql%e3%80%91mysql%e8%bf%90%e7%bb%b4%e7%a5%9e%e5%99%a8pt-kill%e5%ae%9e%e6%88%98%ef%bc%9a%e7%b2%be%e5%87%86%e6%96%a9%e6%9d%80%e5%9e%83%e5%9c%besql%e7%9a%84%e5%ae%8c%e6%95%b4%e6%8c%87%e5%8d%97","status":"publish","type":"post","link":"https:\/\/yunyanglib.cn\/?p=1095","title":{"rendered":"\u3010MySQL\u3011MySQL\u8fd0\u7ef4\u795e\u5668pt-kill\u5b9e\u6218\uff1a\u7cbe\u51c6\u65a9\u6740\u5783\u573eSQL\u7684\u5b8c\u6574\u6307\u5357"},"content":{"rendered":"\n

\u65e5\u5e38\u5de5\u4f5c\u8fc7\u7a0b\u4e2d\uff0c\u8c01\u6ca1\u9047\u5230\u8fc7\u8fd9\u79cd\u7a98\u5883\uff1a\u4e1a\u52a1\u9ad8\u5cf0\u671f\u7a81\u7136 CPU \u72c2\u98d9\uff0c\u5927\u91cf\u8fde\u63a5\u5806\u79ef\uff0c\u6392\u67e5\u53d1\u73b0\u662f\u51e0\u6761\u5931\u63a7\u7684\u6162\u67e5\u8be2\u5728\u75af\u72c2\u5360\u7528\u8d44\u6e90\u3002\u624b\u52a8\u6267\u884cshow processlist<\/code>\u67e5\u627e\u7ebf\u7a0b ID \u518dkill<\/code>\uff1f\u7b49\u64cd\u4f5c\u5b8c\u6210\uff0c\u4e1a\u52a1\u53ef\u80fd\u5df2\u7ecf\u53d7\u635f\u3002\u800c Percona Toolkit \u4e2d\u7684 pt-kill \u5de5\u5177\uff0c\u6b63\u662f\u89e3\u51b3\u8fd9\u7c7b\u95ee\u9898\u7684 “\u624b\u672f\u5200”\u2014\u2014 \u5b83\u80fd\u81ea\u52a8\u76d1\u63a7\u5e76\u65a9\u6740\u7b26\u5408\u6761\u4ef6\u7684\u5783\u573e SQL\uff0c\u8ba9\u6570\u636e\u5e93\u91cd\u83b7\u65b0\u751f\u3002\u4eca\u5929\u5c31\u5e26\u5927\u5bb6\u4ece\u57fa\u7840\u7528\u6cd5\u5230\u751f\u4ea7\u5b9e\u6218\uff0c\u5f7b\u5e95\u638c\u63e1\u8fd9\u4e2a\u8fd0\u7ef4\u5fc5\u5907\u5de5\u5177\uff01<\/p>\n\n\n\n

\u4e00\u3001\u73af\u5883\u51c6\u5907\uff1a\u6743\u9650\u914d\u7f6e\u662f\u524d\u63d0\uff08\u907f\u5751\u5173\u952e\uff09<\/h2>\n\n\n\n

\u5728\u5f00\u59cb\u4f7f\u7528 pt-kill \u524d\uff0c\u5fc5\u987b\u5148\u89e3\u51b3\u6743\u9650\u95ee\u9898\u3002\u5f88\u591a\u540c\u5b66\u53cd\u9988 “\u547d\u4ee4\u6267\u884c\u6210\u529f\u5374\u6ca1 kill \u6389 SQL”\uff0c\u672c\u8d28\u662f\u6743\u9650\u914d\u7f6e\u4e0d\u5f53\u3002<\/p>\n\n\n\n

1. \u57fa\u7840\u6743\u9650\u914d\u7f6e\uff08\u517c\u5bb9 MySQL 5.7\/8.0\uff09<\/h3>\n\n\n\n

\u521b\u5efa\u4e13\u7528\u8fd0\u7ef4\u8d26\u53f7\uff0c\u907f\u514d\u4f7f\u7528 root \u8d26\u53f7\u76f4\u63a5\u64cd\u4f5c\uff1a<\/p>\n\n\n\n

# \u521b\u5efadba\u7528\u6237\u5e76\u6388\u6743\nCREATE USER 'dba'@'localhost' IDENTIFIED WITH MYSQL_NATIVE_PASSWORD BY 'Id81Gdac_a';\n# \u5fc5\u9700\u6743\u9650\uff1aPROCESS\uff08\u67e5\u770b\u6240\u6709\u7ebf\u7a0b\uff09+ SUPER\uff08\u7ec8\u6b62\u7ebf\u7a0b\uff0c5.7\u53ca\u4ee5\u4e0b\uff09\nGRANT PROCESS, SUPER ON *.* TO 'dba'@'localhost';\nFLUSH PRIVILEGES;\n<\/code><\/pre>\n\n\n\n
2. MySQL 8.0 \u6743\u9650\u4f18\u5316\uff08\u63a8\u8350\u65b9\u6848\uff09<\/h3>\n\n\n\n
MySQL 8.0 \u5df2\u5e9f\u5f03 SUPER \u6743\u9650\u7684\u90e8\u5206\u529f\u80fd\uff0c\u63a8\u8350\u4f7f\u7528\u7ec6\u7c92\u5ea6\u52a8\u6001\u6743\u9650\uff0c\u66f4\u5b89\u5168\u53ef\u63a7\uff1a<\/p>\n\n\n\n
# 8.0\u4e13\u7528\u6388\u6743\uff1aCONNECTION_ADMIN\uff08\u66ff\u4ee3SUPER\u7684kill\u6743\u9650\uff09+SYSTEM_USER \uff08\u4fdd\u62a4\u6216\u64cd\u4f5c\u201c\u7cfb\u7edf\u8d26\u6237\u201d\uff09+ PROCESS\uff08\u67e5\u770b\u7ebf\u7a0b\uff09\nGRANT PROCESS, CONNECTION_ADMIN, SYSTEM_USER ON *.* TO 'dba'@'localhost';\n<\/code><\/pre>\n\n\n\n
\u26a0\ufe0f \u6ce8\u610f\uff1aPROCESS \u6743\u9650\u5141\u8bb8\u67e5\u770b\u6240\u6709\u7528\u6237\u7684 SQL \u539f\u6587\uff0c\u53ef\u80fd\u6cc4\u9732\u654f\u611f\u4fe1\u606f\uff0c\u5efa\u8bae\u4ec5\u6388\u6743\u7ed9\u4fe1\u4efb\u7684\u8fd0\u7ef4\u4eba\u5458\u3002<\/p>\n\n\n\n
3. \u5de5\u5177\u5b89\u88c5\uff08CentOS \u793a\u4f8b\uff09<\/h3>\n\n\n\n
\u82e5\u672a\u5b89\u88c5 Percona Toolkit\uff0c\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n\n\n\n
# \u4e0b\u8f7d\u6700\u65b0\u7a33\u5b9a\u72483.5.4\n\nwget https:\/\/downloads.percona.com\/downloads\/percona-toolkit\/3.5.4\/binary\/redhat\/7\/x86_64\/percona-toolkit-3.5.4-2.el7.x86_64.rpm\n\n# \u5b89\u88c5\u4f9d\u8d56\u5e76\u90e8\u7f72\n\nyum install -y percona-toolkit-3.5.4-2.el7.x86_64.rpm\n\n# \u9a8c\u8bc1\u5b89\u88c5\npt-kill --version<\/code><\/pre>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u4e8c\u3001\u6838\u5fc3\u7528\u6cd5\uff1a\u4ece\u6d4b\u8bd5\u5230\u751f\u4ea7\u7684\u5b8c\u6574\u6d41\u7a0b<\/h2>\n\n\n\n
1. \u6d4b\u8bd5\u6a21\u5f0f\uff1a\u53ea\u6253\u5370\u4e0d kill\uff08\u5b89\u5168\u9a8c\u8bc1\uff09<\/h3>\n\n\n\n
\u5148\u9a8c\u8bc1\u89c4\u5219\u662f\u5426\u6b63\u786e\u5339\u914d\u76ee\u6807 SQL\uff0c\u907f\u514d\u8bef\u6740\u6b63\u5e38\u4e1a\u52a1\uff1a<\/p>\n\n\n\n
# \u5339\u914d\u8fd0\u884c\u8d85\u8fc710\u79d2\u7684\u67e5\u8be2\uff0c\u4ec5\u6253\u5370\u4e0d\u7ec8\u6b62\npt-kill --user=dba --password='Id81Gdac_a' \\\n--socket=\/tmp\/mysql.sock \\\n--busy-time=10 \\  # \u8fd0\u884c\u65f6\u95f4\u9608\u503c\uff08\u79d2\uff09\n--interval=10 \\   # \u6bcf\u969410\u79d2\u68c0\u67e5\u4e00\u6b21\n--print           # \u6253\u5370\u5339\u914d\u7684SQL\n<\/code><\/pre>\n\n\n\n
\u6d4b\u8bd5\u9a8c\u8bc1\uff1a\u5728 MySQL \u4e2d\u6267\u884cselect sleep(60);<\/code>\uff0c\u7ec8\u7aef\u4f1a\u8f93\u51fa\u5339\u914d\u7684\u7ebf\u7a0b\u4fe1\u606f\u3002<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
2. \u6267\u884c kill\uff1a\u7cbe\u51c6\u7ec8\u6b62\u5783\u573e SQL<\/h3>\n\n\n\n
\u786e\u8ba4\u89c4\u5219\u65e0\u8bef\u540e\uff0c\u6dfb\u52a0--kill<\/code>\u53c2\u6570\u6267\u884c\u7ec8\u6b62\u64cd\u4f5c\uff1a<\/p>\n\n\n\n
# kill\u8fd0\u884c\u8d85\u8fc710\u79d2\u7684\u67e5\u8be2\uff0c\u5e76\u6253\u5370\u65e5\u5fd7\npt-kill --user=dba --password='Id81Gdac_a' \\\n--socket=\/tmp\/mysql.sock \\\n--busy-time=10 \\\n--kill \\          # \u7ec8\u6b62\u5339\u914d\u7684SQL\n--print           # \u540c\u65f6\u6253\u5370\u88abkill\u7684SQL\n<\/code><\/pre>\n\n\n\n
\u6b64\u65f6\u518d\u6267\u884cselect sleep(60);<\/code>\uff0c\u4f1a\u88ab\u7acb\u5373\u7ec8\u6b62\uff0c\u5ba2\u6237\u7aef\u63d0\u793a “Lost connection”\u3002<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
3. \u540e\u53f0\u5b88\u62a4\uff1a\u6301\u7eed\u76d1\u63a7\uff08\u751f\u4ea7\u73af\u5883\u5fc5\u5907\uff09<\/h3>\n\n\n\n
\u8ba9 pt-kill \u5728\u540e\u53f0\u8fd0\u884c\uff0c\u6301\u7eed\u5b88\u62a4\u6570\u636e\u5e93\uff1a<\/p>\n\n\n\n
# \u540e\u53f0\u8fd0\u884c\uff0c\u65e5\u5fd7\u8f93\u51fa\u5230\u6307\u5b9a\u6587\u4ef6\npt-kill --user=dba --password='Id81Gdac_a' \\\n--socket=\/tmp\/mysql.sock \\\n--busy-time=10 \\\n--kill \\\n--print \\\n--daemonize \\     # \u540e\u53f0\u5b88\u62a4\u8fdb\u7a0b\u6a21\u5f0f\n--log=\/data\/pt-kill.log  # \u65e5\u5fd7\u6587\u4ef6\u8def\u5f84\n<\/code><\/pre>\n\n\n\n
4. \u8fdb\u7a0b\u7ba1\u7406\uff1a\u542f\u505c\u4e0e\u67e5\u770b<\/h3>\n\n\n\n
# \u67e5\u770b\u540e\u53f0\u8fd0\u884c\u7684pt-kill\u8fdb\u7a0b\nps -ef | grep pt-kill\n# \u505c\u6b62\u8fdb\u7a0b\uff08\u66ff\u6362\u4e3a\u5b9e\u9645PID\uff09\nkill -9 3181<\/code><\/pre>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u4e09\u3001\u8fdb\u9636\u6280\u5de7\uff1a\u7cbe\u51c6\u8fc7\u6ee4\u4e0e\u4e2a\u6027\u5316\u914d\u7f6e<\/h2>\n\n\n\n
1. \u6309\u7528\u6237 \/ \u6570\u636e\u5e93\u8fc7\u6ee4\uff08\u907f\u514d\u8bef\u6740\u6838\u5fc3\u4e1a\u52a1\uff09<\/h3>\n\n\n\n
# \u53eakill\u6765\u81eamaria\u7528\u6237\u3001\u8fd0\u884c\u8d85\u8fc710\u79d2\u7684\u67e5\u8be2\npt-kill --user=dba --password='Id81Gdac_a' \\\n--socket=\/tmp\/mysql.sock \\\n--match-user='maria' \\  # \u5339\u914d\u6307\u5b9a\u7528\u6237\n--busy-time=10 \\\n--kill --print\n\n# \u53eakill\u7279\u5b9a\u6570\u636e\u5e93\u7684\u6162\u67e5\u8be2\uff08\u4f8b\u5982test\u5e93\uff09\npt-kill --user=dba --password='Id81Gdac_a' \\\n--socket=\/tmp\/mysql.sock \\\n--match-db='test' \\     # \u5339\u914d\u6307\u5b9a\u6570\u636e\u5e93\n--busy-time=10 \\\n--kill --print\n<\/code><\/pre>\n\n\n\n
2. \u6309 SQL \u5185\u5bb9\u5339\u914d\uff08\u7cbe\u51c6\u65a9\u6740\u7279\u5b9a\u7c7b\u578b SQL\uff09<\/h3>\n\n\n\n
\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u5339\u914d SQL \u5173\u952e\u8bcd\uff0c\u6bd4\u5982\u53ea kill \u5305\u542bsleep<\/code>\u6216order by rand()<\/code>\u7684\u4f4e\u6548\u67e5\u8be2\uff1a<\/p>\n\n\n\n
pt-kill --user=dba --password='Id81Gdac_a' \\\n--socket=\/tmp\/mysql.sock \\\n--match-info='(?i-xsm:sleep|order by rand)' \\  # \u4e0d\u533a\u5206\u5927\u5c0f\u5199\u5339\u914d\n--busy-time=5 \\\n--kill --print<\/code><\/pre>\n\n\n\n
3. \u62a5\u8b66\u589e\u5f3a\uff1a\u6162 SQL \u5b9e\u65f6\u901a\u77e5\uff08\u91cd\u6784\u7248\u529f\u80fd\uff09<\/h3>\n\n\n\n
\u539f\u751f pt-kill \u4ec5\u652f\u6301\u65e5\u5fd7\u8f93\u51fa\uff0c\u63a8\u8350\u4f7f\u7528 PHP \u91cd\u6784\u7248\uff08\u652f\u6301\u90ae\u4ef6 \/ \u5fae\u4fe1\u62a5\u8b66\uff09\uff1a<\/p>\n\n\n\n
# \u4e0b\u8f7d\u91cd\u6784\u7248pt-kill\uff08\u542b\u62a5\u8b66\u529f\u80fd\uff09\n\nwget https:\/\/github.com\/hcymysql\/pt-kill\/archive\/refs\/heads\/master.zip\n\nunzip master.zip && cd pt-kill-master\n\n# \u5b89\u88c5\u4f9d\u8d56\n\nyum install -y php-process php php-mysql\n\n# \u5e26\u5fae\u4fe1\u62a5\u8b66\u7684\u540e\u53f0\u8fd0\u884c\u793a\u4f8b\n\nphp pt-kill.php -u dba -p 'Id81Gdac_a' \\\n\n-h localhost -P 3306 \\\n\n-B 10 \\  # \u8d85\u65f6\u9608\u503c\uff08\u79d2\uff09\n\n--match-info='select|alter' \\\n\n--kill --weixin --daemon 1<\/code><\/pre>\n\n\n\n
\u26a0\ufe0f \u9700\u63d0\u524d\u914d\u7f6e\u5fae\u4fe1 \/ \u90ae\u4ef6\u53c2\u6570\uff08\u53c2\u8003\u811a\u672c\u5185\u8bf4\u660e\uff09\uff0c\u5b9e\u73b0\u6162 SQL \u5b9e\u65f6\u63a8\u9001\u3002<\/p>\n\n\n\n
\u56db\u3001\u751f\u4ea7\u73af\u5883\u907f\u5751\u6307\u5357<\/h2>\n\n\n\n
    \n
  1. \u6743\u9650\u6700\u5c0f\u5316<\/strong>\uff1a\u4f18\u5148\u4f7f\u7528 MySQL 8.0 \u7684\u52a8\u6001\u6743\u9650\uff0c\u907f\u514d\u6388\u4e88 SUPER \u6743\u9650\uff0c\u964d\u4f4e\u5b89\u5168\u98ce\u9669\u3002<\/li>\n\n\n\n
  2. \u907f\u514d\u8bef\u6740\u7cfb\u7edf\u7ebf\u7a0b<\/strong>\uff1apt-kill \u9ed8\u8ba4\u8fc7\u6ee4\u590d\u5236\u7ebf\u7a0b\u7b49\u7cfb\u7edf\u7ebf\u7a0b\uff0c\u4f46\u4ecd\u5efa\u8bae\u6dfb\u52a0--ignore-user='system user'<\/code>\u53c2\u6570\u3002<\/li>\n\n\n\n
  3. \u65e5\u5fd7\u8f6e\u8f6c<\/strong>\uff1a\u957f\u671f\u8fd0\u884c\u9700\u914d\u7f6e\u65e5\u5fd7\u8f6e\u8f6c\uff0c\u907f\u514d\u65e5\u5fd7\u6587\u4ef6\u8fc7\u5927\uff1a<\/li>\n<\/ol>\n\n\n\n
    # \u6dfb\u52a0\u5230crontab\uff0c\u6bcf\u65e5\u5207\u5272\u65e5\u5fd7 <\/code>\n0 0 * * * mv \/data\/pt-kill.log \/data\/pt-kill.log.$(date +%Y%m%d) && touch \/data\/pt-kill.log<\/code><\/code><\/pre>\n\n\n\n
        4. \u4e2d\u6587\u4e71\u7801\u5904\u7406<\/strong>\uff1a\u82e5 SQL \u5305\u542b\u4e2d\u6587\u5b57\u7b26\u5bfc\u81f4\u5de5\u5177\u5931\u6548\uff0c\u4fee\u6539 pt-kill \u811a\u672c\u5934\u90e8\uff1a<\/p>\n\n\n\n
    use utf8;\nuse open \":encoding(utf8)\", \":std\";<\/code><\/pre>\n\n\n\n
       5. \u8c28\u614e\u4f7f\u7528 –victims=all<\/strong>\uff1a\u9ed8\u8ba4\u53ea kill \u6700\u65e7\u7684\u6162\u67e5\u8be2\uff08--victims=oldest<\/code>\uff09\uff0c\u4f7f\u7528all<\/code>\u4f1a\u7ec8\u6b62\u6240\u6709\u5339\u914d\u67e5\u8be2\uff0c\u9700\u8bc4\u4f30\u4e1a\u52a1\u5f71\u54cd\u3002<\/p>\n\n\n\n
    \u7ed3\u8bed<\/h2>\n\n\n\n
    pt-kill \u4f5c\u4e3a MySQL \u8fd0\u7ef4\u7684 “\u6551\u706b\u795e\u5668”\uff0c\u6838\u5fc3\u4ef7\u503c\u5728\u4e8e\u5feb\u901f\u6b62\u635f\uff0c\u4f46\u66f4\u91cd\u8981\u7684\u662f\u901a\u8fc7\u65e5\u5fd7\u5206\u6790\u6162 SQL \u6839\u6e90\uff0c\u4ece\u4f18\u5316 SQL\u3001\u6dfb\u52a0\u7d22\u5f15\u7b49\u89d2\u5ea6\u5f7b\u5e95\u89e3\u51b3\u95ee\u9898\u3002\u5982\u679c\u5927\u5bb6\u5728\u4f7f\u7528\u4e2d\u9047\u5230\u6743\u9650\u62a5\u9519\u3001\u5339\u914d\u89c4\u5219\u5931\u6548\u7b49\u95ee\u9898\uff0c\u6b22\u8fce\u5728\u8bc4\u8bba\u533a\u4ea4\u6d41\uff0c\u6211\u4f1a\u7b2c\u4e00\u65f6\u95f4\u56de\u590d\uff01<\/p>\n\n\n\n
    \u6700\u540e\u9644\u4e0a\u5de5\u5177\u5b98\u65b9\u6587\u6863\uff1aPercona pt-kill \u5b98\u65b9\u6307\u5357<\/a>\uff0c\u5efa\u8bae\u6536\u85cf\u5907\u7528\uff5e<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u65e5\u5e38\u5de5\u4f5c\u8fc7\u7a0b\u4e2d\uff0c\u8c01\u6ca1\u9047\u5230\u8fc7\u8fd9\u79cd\u7a98\u5883\uff1a\u4e1a\u52a1\u9ad8\u5cf0\u671f\u7a81\u7136 CPU \u72c2\u98d9\uff0c\u5927\u91cf\u8fde\u63a5\u5806\u79ef\uff0c\u6392\u67e5\u53d1\u73b0\u662f\u51e0\u6761\u5931\u63a7\u7684\u6162\u67e5\u8be2\u5728\u75af<\/p>\n
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