{"id":10008221,"date":"2023-09-04T11:58:57","date_gmt":"2023-09-04T03:58:57","guid":{"rendered":"https:\/\/blog.itmax.cn\/?p=10008221"},"modified":"2023-09-04T11:58:57","modified_gmt":"2023-09-04T03:58:57","slug":"%e6%b5%85%e8%b0%88mysql%e8%af%bb%e5%86%99%e5%88%86%e7%a6%bb%e7%9a%84%e5%9d%91%e4%bb%a5%e5%8f%8a%e5%ba%94%e5%af%b9%e7%9a%84%e6%96%b9%e6%a1%88-%e4%ba%ac%e4%b8%9c%e4%ba%91%e6%8a%80%e6%9c%af%e5%9b%a2","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10008221","title":{"rendered":"\u6d45\u8c08Mysql\u8bfb\u5199\u5206\u79bb\u7684\u5751\u4ee5\u53ca\u5e94\u5bf9\u7684\u65b9\u6848 | 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title=\"\"><\/p>\n<p>\u4e0a\u9762\u8fd9\u4e2a\u56fe\u662f\u4e00\u4e2a\u57fa\u7840\u7684Mysql\u7684\u4e3b\u4ece\u67b6\u6784\uff0c1\u4e3b1\u59073\u4ece\u3002\u8fd9\u79cd\u67b6\u6784\u662f\u5ba2\u6237\u7aef\u4e3b\u52a8\u505a\u7684\u8d1f\u8f7d\u5747\u8861\uff0c\u6570\u636e\u5e93\u7684\u8fde\u63a5\u4fe1\u606f\u4e00\u822c\u662f\u653e\u5230\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u5c42\uff0c\u4e5f\u5c31\u662f\u8bf4\u7531\u5ba2\u6237\u7aef\u6765\u9009\u62e9\u6570\u636e\u5e93\u8fdb\u884c\u8bfb\u5199<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044178557\" alt=\"\" title=\"\" 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decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044178559\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u4e0a\u56fe\u8868\u793a\u4e86\u4e00\u4e2aupdate\u8bed\u53e5\u4ece\u8282\u70b9A\u540c\u6b65\u5230\u8282\u70b9B\u7684\u5b8c\u6574\u8fc7\u7a0b<\/p>\n<p>\u5907\u5e93B\u548c\u4e3b\u5e93A\u7ef4\u62a4\u4e86\u4e00\u4e2a\u957f\u8fde\u63a5\uff0c\u4e3b\u5e93A\u5185\u90e8\u6709\u4e00\u4e2a\u7ebf\u7a0b\uff0c\u4e13\u95e8\u7528\u6765\u670d\u52a1\u5907\u5e93B\u7684\u8fde\u63a5\u3002\u4e00\u4e2a\u4e8b\u52a1\u65e5\u5fd7\u540c\u6b65\u7684\u5b8c\u6574\u6d41\u7a0b\u662f\uff1a<\/p>\n<p>1.\u5728\u5907\u5e93 B \u4e0a\u901a\u8fc7 change master \u547d\u4ee4\uff0c\u8bbe\u7f6e\u4e3b\u5e93 A \u7684 IP\u3001\u7aef\u53e3\u3001\u7528\u6237\u540d\u3001\u5bc6\u7801\uff0c\u4ee5\u53ca\u8981\u4ece\u54ea\u4e2a\u4f4d\u7f6e\u5f00\u59cb\u8bf7\u6c42 binlog\uff0c\u8fd9\u4e2a\u4f4d\u7f6e\u5305\u542b\u6587\u4ef6\u540d\u548c\u65e5\u5fd7\u504f\u79fb\u91cf\u3002<\/p>\n<p>2.\u5728\u5907\u5e93 B \u4e0a\u6267\u884c start slave \u547d\u4ee4\uff0c\u8fd9\u65f6\u5019\u5907\u5e93\u4f1a\u542f\u52a8\u4e24\u4e2a\u7ebf\u7a0b\uff0c\u5c31\u662f\u56fe\u4e2d\u7684 io\/_thread \u548c sql\/_thread\u3002<\/p>\n<p>3.\u5176\u4e2d io_thread \u8d1f\u8d23\u4e0e\u4e3b\u5e93\u5efa\u7acb\u8fde\u63a5\u3002<\/p>\n<p>4.\u4e3b\u5e93 A \u6821\u9a8c\u5b8c\u7528\u6237\u540d\u3001\u5bc6\u7801\u540e\uff0c\u5f00\u59cb\u6309\u7167\u5907\u5e93 B \u4f20\u8fc7\u6765\u7684\u4f4d\u7f6e\uff0c\u4ece\u672c\u5730\u8bfb\u53d6 binlog\uff0c\u53d1\u7ed9 B\u3002\u5907\u5e93 B \u62ff\u5230 binlog \u540e\uff0c\u5199\u5230\u672c\u5730\u6587\u4ef6\uff0c\u79f0\u4e3a\u4e2d\u8f6c\u65e5\u5fd7\uff08relay log\uff09\u3002<\/p>\n<p>5.sql_thread \u8bfb\u53d6\u4e2d\u8f6c\u65e5\u5fd7\uff0c\u89e3\u6790\u51fa\u65e5\u5fd7\u91cc\u7684\u547d\u4ee4\uff0c\u5e76\u6267\u884c\u3002<\/p>\n<p>\u4e0a\u56fe\u4e2d\u7ea2\u8272\u7bad\u5934\uff0c\u5982\u679c\u7528\u989c\u8272\u6df1\u6d45\u8868\u793a\u5e76\u53d1\u5ea6\u7684\u8bdd\uff0c\u989c\u8272\u8d8a\u6df1\u5e76\u53d1\u5ea6\u8d8a\u9ad8\uff0c\u6240\u4ee5\u4e3b\u4ece\u5ef6\u8fdf\u65f6\u95f4\u7684\u957f\u77ed\u53d6\u51b3\u4e8e\u5907\u5e93\u540c\u6b65\u7ebf\u7a0b\u6267\u884c\u4e2d\u8f6c\u65e5\u5fd7(\u56fe\u4e2d\u7684relay log)\u7684\u5feb\u6162\u3002\u603b\u7ed3\u4e00\u4e0b\u53ef\u80fd\u51fa\u73b0\u4e3b\u4ece\u5ef6\u8fdf\u7684\u539f\u56e0\uff1a<\/p>\n<p>1.\u4e3b\u5e93\u5e76\u53d1\u9ad8\uff0cTPS\u5927\uff0c\u5907\u5e93\u538b\u529b\u5927\u6267\u884c\u65e5\u5fd7\u6162<\/p>\n<p>2.\u5927\u4e8b\u52a1\uff0c\u4e00\u4e2a\u4e8b\u52a1\u5728\u4e3b\u5e93\u6267\u884c5s\uff0c\u90a3\u4e48\u540c\u6837\u7684\u5230\u5907\u5e93\u4e5f\u5f97\u6267\u884c5s\uff0c\u6bd4\u5982\u4e00\u6b21\u6027\u5220\u9664\u5927\u91cf\u7684\u6570\u636e\uff0c\u5927\u8868DDL\u7b49\u90fd\u662f\u5927\u4e8b\u52a1<\/p>\n<p>3.\u4ece\u5e93\u7684\u5e76\u884c\u590d\u5236\u80fd\u529b\uff0cMsyql5.6\u4e4b\u524d\u7684\u7248\u672c\u662f\u4e0d\u652f\u6301\u5e76\u884c\u590d\u5236\u7684\u4e5f\u5c31\u662f\u4e0a\u56fe\u7684\u6a21\u578b\u3002\u5e76\u884c\u590d\u5236\u4e5f\u6bd4\u8f83\u590d\u6742\uff0c\u5c31\u4e0d\u5728\u8fd9\u513f\u8d58\u8ff0\u4e86\uff0c\u5927\u5bb6\u53ef\u4ee5\u81ea\u884c\u590d\u4e60\u4e86\u89e3\u4e00\u4e0b\u3002<\/p>\n<h2>\u4e09\u3001\u4e3b\u4ece\u5ef6\u8fdf\u89e3\u51b3\u65b9\u6848<\/h2>\n<h4>1.\u5f3a\u5236\u8d70\u4e3b\u5e93<\/h4>\n<p>\u8fd9\u79cd\u65b9\u6848\u5c31\u662f\u8981\u5bf9\u6211\u4eec\u7684\u8bf7\u6c42\u8fdb\u884c\u5206\u7c7b\uff0c\u901a\u5e38\u53ef\u4ee5\u5c06\u8bf7\u6c42\u5206\u6210\u4e24\u7c7b\uff1a<\/p>\n<p>1.\u5bf9\u4e8e\u5fc5\u987b\u8981\u62ff\u5230\u6700\u65b0\u7ed3\u679c\u7684\u8bf7\u6c42\uff0c\u53ef\u4ee5\u5f3a\u5236\u8d70\u4e3b\u5e93<\/p>\n<p>2.\u5bf9\u4e8e\u53ef\u4ee5\u8bfb\u5230\u65e7\u6570\u636e\u7684\u8bf7\u6c42\uff0c\u53ef\u4ee5\u5206\u914d\u5230\u4ece\u5e93<\/p>\n<p>\u8fd9\u79cd\u65b9\u6848\u662f\u6700\u7b80\u5355\u7684\u65b9\u6848\uff0c\u4f46\u662f\u8fd9\u79cd\u65b9\u6848\u6709\u4e00\u4e2a\u7f3a\u70b9\u5c31\u662f\uff0c\u5bf9\u4e8e\u6240\u6709\u7684\u8bf7\u6c42\u90fd\u4e0d\u80fd\u662f\u8fc7\u671f\u8bfb\u7684\u8bf7\u6c42\uff0c\u90a3\u4e48\u6240\u6709\u7684\u538b\u529b\u5c31\u53c8\u6765\u5230\u4e86\u4e3b\u5e93\uff0c\u5c31\u5f97\u653e\u5f03\u8bfb\u5199\u5206\u79bb\uff0c\u653e\u5f03\u6269\u5c55\u6027<\/p>\n<h4>2.sleep\u65b9\u6848<\/h4>\n<p>sleep\u65b9\u6848\u5c31\u662f\u6bcf\u6b21\u67e5\u8be2\u4ece\u5e93\u4e4b\u524d\u90fd\u5148\u6267\u884c\u4e00\u4e0b\uff1aselect sleep(1)\uff0c\u7c7b\u4f3c\u8fd9\u6837\u7684\u547d\u4ee4\uff0c\u8fd9\u79cd\u65b9\u5f0f\u6709\u4e24\u4e2a\u95ee\u9898\uff1a<\/p>\n<p>1.\u5982\u679c\u4e3b\u4ece\u5ef6\u8fdf\u5927\u4e8e1s\uff0c\u90a3\u4e48\u4f9d\u7136\u8bfb\u5230\u7684\u662f\u8fc7\u671f\u72b6\u6001<\/p>\n<p>2.\u5982\u679c\u8fd9\u4e2a\u8bf7\u6c42\u53ef\u80fd0.5s\u5c31\u80fd\u5728\u4ece\u5e93\u62ff\u5230\u7ed3\u679c\uff0c\u4ecd\u7136\u8981\u7b491s<\/p>\n<p>\u8fd9\u79cd\u65b9\u6848\u770b\u8d77\u6765\u5341\u5206\u7684\u4e0d\u9760\u8c31\uff0c\u4e0d\u4e13\u4e1a\uff0c\u4f46\u662f\u8fd9\u79cd\u65b9\u6848\u786e\u5b9e\u4e5f\u6709\u4f7f\u7528\u7684\u573a\u666f\u3002<\/p>\n<p>\u4e4b\u524d\u5728\u505a\u9879\u76ee\u7684\u65f6\u5019\uff0c\u6709\u8fd9\u6837\u4e48\u4e00\u79cd\u573a\u666f\uff0c\u5c31\u662f\u6211\u4eec\u5148\u5199\u4e3b\u5e93\uff0c\u5199\u5b8c\u540e\uff0c\u53d1\u9001\u4e00\u4e2aMQ\u6d88\u606f\uff0c\u7136\u540e\u6d88\u8d39\u65b9\u63a5\u5230\u6d88\u606f\u540e\uff0c\u8c03\u7528\u6211\u4eec\u7684\u67e5\u8be2\u63a5\u53e3\u67e5\u6570\u636e\uff0c\u5f53\u7136\u6211\u4eec\u4e5f\u662f\u8bfb\u5199\u5206\u79bb\u7684\u6a21\u5f0f\uff0c\u5c31\u51fa\u73b0\u4e86\u67e5\u4e0d\u5230\u6570\u636e\u7684\u60c5\u51b5\uff0c\u8fd9\u4e2a\u65f6\u5019\u5efa\u8bae\u6d88\u8d39\u65b9\u5bf9\u6d88\u606f\u8fdb\u884c\u4e00\u4e2a\u5ef6\u8fdf\u6d88\u8d39\uff0c\u6bd4\u5982\u5ef6\u8fdf30ms\uff0c\u7136\u540e\u95ee\u9898\u5c31\u89e3\u51b3\u4e86\uff0c\u8fd9\u79cd\u65b9\u5f0f\u7c7b\u4f3csleep\u65b9\u6848\uff0c\u53ea\u4e0d\u8fc7\u628asleep\u653e\u5230\u4e86\u8c03\u7528\u65b9<\/p>\n<h4>3.\u5224\u65ad\u4e3b\u4ece\u65e0\u5ef6\u8fdf\u65b9\u6848<\/h4>\n<ol>\n<li>\u547d\u4ee4\u5224\u65ad<\/li>\n<\/ol>\n<p>show slave status\uff0c\u8fd9\u4e2a\u547d\u4ee4\u662f\u5728\u4ece\u5e93\u4e0a\u6267\u884c\u7684\uff0c\u6267\u884c\u7684\u7ed3\u679c\u91cc\u9762\u6709\u4e2aseconds\/_behind\/_master\u5b57\u6bb5\uff0c\u8fd9\u4e2a\u5b57\u6bb5\u8868\u793a\u4e3b\u4ece\u5ef6\u8fdf\u591a\u5c11s,\u6ce8\u610f\u5355\u4f4d\u662f\u79d2\u3002\u6240\u4ee5\u8fd9\u79cd\u65b9\u6848\u5c31\u662f\u901a\u8fc7\u5224\u65ad\u5f53\u524d\u8fd9\u4e2a\u503c\u662f\u5426\u4e3a0\uff0c\u5982\u679c\u4e3a0\u5219\u76f4\u63a5\u67e5\u8be2\u83b7\u53d6\u7ed3\u679c\uff0c\u5982\u679c\u4e0d\u4e3a0\uff0c\u5219\u4e00\u76f4\u7b49\u5f85\uff0c\u76f4\u5230\u4e3b\u4ece\u5ef6\u8fdf\u53d8\u4e3a0<\/p>\n<p>\u56e0\u4e3a\u8fd9\u4e2a\u503c\u662f\u79d2\u7ea7\u7684\uff0c\u4f46\u662f\u6211\u4eec\u7684\u4e00\u4e9b\u573a\u666f\u4e0b\u662f\u6beb\u79d2\u7ea7\u7684\u8bf7\u6c42\uff0c\u6240\u4ee5\u901a\u8fc7\u8fd9\u4e2a\u65b9\u5f0f\u5224\u65ad\uff0c\u4e0d\u662f\u7279\u522b\u7cbe\u786e<\/p>\n<ol start=\"2\">\n<li>\u5bf9\u6bd4\u4f4d\u70b9\u5224\u65ad\u4e3b\u4ece\u65e0\u5ef6\u8fdf<\/li>\n<\/ol>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044178560\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u4e0a\u56fe\u662f\u6267\u884c\u4e00\u6b21show slave status \u90e8\u5206\u7ed3\u679c<\/p>\n<ul>\n<li>Master\/_Log\/_File\u548cRead\/_Master\/_Log_Pos\u8868\u793a\u8bfb\u5230\u7684\u4e3b\u5e93\u7684\u6700\u65b0\u7684\u4f4d\u70b9<\/li>\n<li>Relay\/_Master\/_Log\/_File\u548cExec\/_Master\/_Log\/_Pos\u8868\u793a\u5907\u5e93\u6267\u884c\u7684\u6700\u65b0\u7684\u4f4d\u70b9<\/li>\n<\/ul>\n<p>\u5982\u679cMaster\/_Log\/_File\u548cRelay\/_Master\/_Log\/_File\uff0cRead\/_Master\/_Log\/_Pos\u548cExec\/_Master\/_Log_Pos\u8fd9\u4e24\u7ec4\u503c\u5b8c\u5168\u4e00\u81f4\uff0c\u8868\u793a\u4e3b\u4ece\u4e4b\u95f4\u662f\u6ca1\u6709\u5ef6\u8fdf\u7684<\/p>\n<p>3)\u5bf9\u6bd4GTID\u5224\u65ad\u4e3b\u4ece\u65e0\u5ef6\u8fdf<\/p>\n<ul>\n<li>Auto_Position\uff1a1\u8868\u793a\u8fd9\u5bf9\u4e3b\u4ece\u4e4b\u95f4\u542f\u7528\u4e86GTID\u534f\u8bae<\/li>\n<li>Retrieved\/_Gtid\/_Set:\u8868\u793a\u4ece\u5e93\u63a5\u6536\u5230\u7684\u6240\u6709\u7684GTID\u7684\u96c6\u5408<\/li>\n<li>Executed\/_Gtid\/_Set:\u8868\u793a\u4ece\u5e93\u6267\u884c\u5b8c\u6210\u7684\u6240\u6709\u7684GTID\u96c6\u5408<\/li>\n<\/ul>\n<p>\u901a\u8fc7\u6bd4\u8f83Retrieved\/_Gtid\/_Set\u548cExecuted\/_Gtid\/_Set\u96c6\u5408\u662f\u5426\u4e00\u81f4\uff0c\u6765\u786e\u5b9a\u4e3b\u4ece\u662f\u5426\u5b58\u5728\u5ef6\u8fdf\u3002<\/p>\n<p>\u53ef\u89c1\u5bf9\u6bd4\u4f4d\u70b9\u548c\u5bf9\u6bd4GTID\u96c6\u5408\uff0c\u6bd4sleep\u8981\u51c6\u786e\u4e00\u70b9\u513f\uff0c\u5728\u67e5\u8be2\u4e4b\u524d\u90fd\u53ef\u4ee5\u5148\u5224\u65ad\u4e00\u4e0b\u662f\u5426\u63a5\u6536\u5230\u7684\u65e5\u5fd7\u90fd\u6267\u884c\u5b8c\u6210\u4e86\uff0c\u867d\u7136\u51c6\u786e\u5ea6\u63d0\u5347\u4e86\uff0c\u4f46\u662f\u8fd8\u8fbe\u4e0d\u5230\u7cbe\u786e\uff0c\u4e3a\u5565\u8fd9\u4e48\u8bf4\u5462\uff1f<\/p>\n<p>\u5148\u56de\u987e\u4e00\u4e0bbinlog\u5728\u4e00\u4e2a\u4e8b\u7269\u4e0b\u7684\u72b6\u6001<\/p>\n<p>1.\u4e3b\u5e93\u6267\u884c\u5b8c\u6210\uff0c\u5199\u5165binlog\uff0c\u53cd\u9988\u7ed9\u5ba2\u6237\u7aef<\/p>\n<p>2.binlog\u88ab\u4ece\u4e3b\u5e93\u53d1\u9001\u5230\u5907\u5e93\uff0c\u5907\u5e93\u63a5\u6536\u5230\u65e5\u5fd7<\/p>\n<p>3.\u5907\u5e93\u6267\u884cbinlog<\/p>\n<p>\u6211\u4eec\u4e0a\u9762\u5224\u65ad\u4e3b\u5907\u65e0\u5ef6\u8fdf\u65b9\u6848\uff0c\u90fd\u662f\u5224\u65ad\u5907\u5e93\u6536\u5230\u7684\u65e5\u5fd7\u90fd\u6267\u884c\u8fc7\u4e86\uff0c\u4f46\u662f\u4ecebinlog\u5728\u4e3b\u5907\u4e4b\u95f4\u7684\u72b6\u6001\u5206\u6790\uff0c\u53ef\u4ee5\u770b\u51fa\uff0c\u8fd8\u6709\u4e00\u90e8\u5206\u65e5\u5fd7\u5904\u4e8e\u5ba2\u6237\u7aef\u5df2\u7ecf\u6536\u5230\u63d0\u4ea4\u786e\u8ba4\uff0c\u4f46\u662f\u5907\u5e93\u8fd8\u6ca1\u6709\u6536\u5230\u65e5\u5fd7\u7684\u72b6\u6001<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044178561\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u8fd9\u4e2a\u65f6\u5019\u4e3b\u5e93\u6267\u884c\u4e863\u4e2a\u4e8b\u7269\uff0ctrx1,trx2,trx3\uff0c\u5176\u4e2d<\/p>\n<ul>\n<li>trx1,trx2\u5df2\u7ecf\u4f20\u5230\u4ece\u5e93\uff0c\u5e76\u4e14\u4ece\u5e93\u5df2\u7ecf\u6267\u884c\u5b8c\u6210<\/li>\n<li>trx3\u4e3b\u5e93\u5df2\u7ecf\u6267\u884c\u5b8c\u6210\uff0c\u5e76\u4e14\u5df2\u7ecf\u7ed9\u5ba2\u6237\u7aef\u56de\u590d\uff0c\u4f46\u662f\u8fd8\u6ca1\u6709\u4f20\u7ed9\u4ece\u5e93<\/li>\n<\/ul>\n<p>\u8fd9\u4e2a\u65f6\u5019\u5982\u679c\u5728\u4ece\u5e93B\u6267\u884c\u67e5\u8be2\uff0c\u6309\u7167\u4e0a\u9762\u6211\u4eec\u5224\u65ad\u4f4d\u70b9\u7684\u65b9\u5f0f\uff0c\u8fd9\u4e2a\u65f6\u5019\u4e3b\u4ece\u662f\u6ca1\u6709\u5ef6\u8fdf\u7684\uff0c\u4f46\u662f\u8fd8\u67e5\u4e0d\u5230trx3,\u4e25\u683c\u8bf4\u5c31\u662f\u51fa\u73b0\u4e86&#8221;\u8fc7\u671f\u8bfb&#8221;\u3002\u90a3\u4e48\u8fd9\u4e2a\u95ee\u9898\u6709\u4ec0\u4e48\u65b9\u6cd5\u53ef\u4ee5\u89e3\u51b3\u4e48\uff1f<\/p>\n<p>\u8981\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u53ef\u4ee5\u5f15\u5165\u534a\u540c\u6b65\u590d\u5236\uff0c\u4e5f\u5c31\u662fsemi-sync repliacation(\u53c2\u8003\uff1a<a target=\"_blank\" href=\"https:\/\/link.segmentfault.com\/?enc=d5VWttbalwDpqrVbGKbCcw%3D%3D.JzEpvqTKUttjaum5smcOGTh4vR4e0wbCLthIKl%2B4C3glDBUci0cm3kqxHnCMEQeGsvN1cDnNUwCQXnZFk7hDYVXNnwwoDjtA4%2Fxi3mdtXZ4%3D\" rel=\"noopener noreferrer\">https:\/\/dev.mysql.com\/doc\/refman\/8.0\/en\/replication-semisync.html<\/a>)\u3002<\/p>\n<p>\u53ef\u4ee5\u901a\u8fc7<\/p>\n<pre><code>show variables like '%rpl_semi_sync_master_enabled%'\nshow variables like '%rpl_semi_sync_slave_enabled%'\n\n\n<\/code><\/pre>\n<p>\u8fd9\u4e24\u4e2a\u547d\u4ee4\u6765\u67e5\u770b\u4e3b\u4ece\u662f\u5426\u90fd\u5f00\u542f\u4e86\u534a\u540c\u6b65\u590d\u5236\u3002<\/p>\n<p>semi-sync\u505a\u4e86\u8fd9\u6837\u7684\u8bbe\u8ba1\uff1a<\/p>\n<p>1.\u4e8b\u7269\u63d0\u4ea4\u7684\u65f6\u5019\uff0c\u4e3b\u5e93\u628abinlog\u53d1\u7ed9\u4ece\u5e93<\/p>\n<p>2.\u4ece\u5e93\u63a5\u6536\u5230\u4e3b\u5e93\u53d1\u8fc7\u6765\u7684binlog\uff0c\u7ed9\u4e3b\u5e93\u4e00\u4e2aack\u786e\u8ba4\uff0c\u8868\u793a\u6536\u5230\u4e86<\/p>\n<p>3.\u4e3b\u5e93\u6536\u5230\u8fd9\u4e2aack\u786e\u8ba4\u540e\uff0c\u624d\u7ed9\u5ba2\u6237\u7aef\u8fd4\u56de\u4e00\u4e2a\u4e8b\u7269\u5b8c\u6210\u7684\u786e\u8ba4<\/p>\n<p>\u4e5f\u5c31\u662f\u542f\u7528\u4e86semi-sync\uff0c\u8868\u793a\u6240\u6709\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\u5df2\u7ecf\u786e\u8ba4\u5b8c\u6210\u7684\u4e8b\u7269\uff0c\u4ece\u5e93\u90fd\u6536\u5230\u4e86binlog\u65e5\u5fd7\uff0c\u8fd9\u6837\u901a\u8fc7semi-sync\u914d\u5408\u5224\u65ad\u4f4d\u70b9\u7684\u65b9\u5f0f\uff0c\u5c31\u53ef\u4ee5\u786e\u5b9a\u5728\u4ece\u5e93\u4e0a\u7684\u67e5\u8be2\uff0c\u907f\u514d\u4e86\u8fc7\u671f\u8bfb\u7684\u51fa\u73b0\u3002<\/p>\n<p>\u4f46\u662fsemi-sync\u914d\u5408\u5224\u65ad\u4f4d\u70b9\u7684\u65b9\u5f0f\uff0c\u53ea\u9002\u7528\u4e00\u4e3b\u4e00\u5907\u7684\u60c5\u51b5\uff0c\u5728\u4e00\u4e3b\u591a\u4ece\u7684\u60c5\u51b5\u4e0b\uff0c\u4e3b\u5e93\u53ea\u8981\u6536\u5230\u4e00\u4e2a\u4ece\u5e93\u7684ack\u786e\u8ba4\uff0c\u5c31\u7ed9\u5ba2\u6237\u7aef\u8fd4\u56de\u4e8b\u7269\u6267\u884c\u5b8c\u6210\u7684\u786e\u8ba4\uff0c\u8fd9\u4e2a\u65f6\u5019\u5728\u4ece\u5e93\u4e0a\u6267\u884c\u67e5\u8be2\u5c31\u6709\u4e24\u79cd\u60c5\u51b5<\/p>\n<ul>\n<li>\u5982\u679c\u67e5\u8be2\u521a\u597d\u662f\u5728\u7ed9\u4e3b\u5e93\u54cd\u5e94ack\u786e\u8ba4\u7684\u4ece\u5e93\u4e0a\uff0c\u90a3\u4e48\u53ef\u4ee5\u67e5\u8be2\u5230\u6b63\u786e\u7684\u6570\u636e<\/li>\n<li>\u4f46\u662f\u5982\u679c\u8bf7\u6c42\u843d\u5230\u5176\u4ed6\u7684\u4ece\u5e93\u4e0a\uff0c\u4ed6\u4eec\u53ef\u80fd\u8fd8\u6ca1\u6536\u5230\u65e5\u5fd7\uff0c\u6240\u4ee5\u4f9d\u7136\u53ef\u80fd\u5b58\u5728\u8fc7\u671f\u8bfb<\/li>\n<\/ul>\n<p>\u5176\u5b9e\u901a\u8fc7\u5224\u65ad\u540c\u6b65\u4f4d\u70b9\u6216\u8005GTID\u96c6\u5408\u7684\u65b9\u6848\uff0c\u8fd8\u5b58\u5728\u4e00\u4e2a\u6f5c\u5728\u7684\u95ee\u9898\uff0c\u5c31\u662f\u4e1a\u52a1\u9ad8\u5cf0\u671f\uff0c\u4e3b\u5e93\u7684\u4f4d\u70b9\u6216\u8005GITD\u96c6\u5408\u66f4\u65b0\u7684\u975e\u5e38\u5feb\uff0c\u90a3\u4e48\u4e24\u4e2a\u4f4d\u70b9\u7684\u5224\u65ad\u4e00\u76f4\u4e0d\u76f8\u7b49\uff0c\u5f88\u53ef\u80fd\u51fa\u73b0\u4ece\u5e93\u4e00\u76f4\u65e0\u6cd5\u54cd\u5e94\u67e5\u8be2\u8bf7\u6c42\u7684\u60c5\u51b5\u3002<\/p>\n<p>\u4e0a\u9762\u7684\u4e24\u79cd\u65b9\u6848\u5728\u9760\u8c31\u7a0b\u5ea6\u548c\u7cbe\u786e\u6027\u4e0a\u90fd\u5dee\u4e86\u4e00\u70b9\u513f\uff0c\u63a5\u4e0b\u6765\u4ecb\u7ecd\u4e24\u79cd\u76f8\u5bf9\u9760\u8c31\u548c\u7cbe\u786e\u4e00\u70b9\u513f\u7684\u65b9\u6848<\/p>\n<h4>4.\u7b49\u4e3b\u5e93\u4f4d\u70b9<\/h4>\n<p>\u8981\u7406\u89e3\u7b49\u4e3b\u5e93\u4f4d\u70b9\uff0c\u5148\u4ecb\u7ecd\u4e00\u6761\u547d\u4ee4<\/p>\n<pre><code>select master_pos_wait(file, pos[, timeout]);\n<\/code><\/pre>\n<p>\u8fd9\u6761\u547d\u4ee4\u6267\u884c\u7684\u903b\u8f91\u662f\uff1a<\/p>\n<p>1.\u9996\u5148\u662f\u5728\u4ece\u5e93\u6267\u884c\u7684<\/p>\n<p>2.\u53c2\u6570file\u548cpos\u662f\u4e3b\u5e93\u7684binlog\u6587\u4ef6\u540d\u548c\u6267\u884c\u5230\u7684\u4f4d\u7f6e<\/p>\n<p>3.timeout\u53c2\u6570\u662f\u975e\u5fc5\u987b\uff0c\u8bbe\u7f6e\u4e3a\u6b63\u6574\u6570N\uff0c\u8868\u793a\u8fd9\u4e2a\u51fd\u6570\u6700\u591a\u7b49\u5230N\u79d2<\/p>\n<p>\u8fd9\u4e2a\u547d\u4ee4\u6267\u884c\u7ed3\u679cM\u53ef\u80fd\u5b58\u5728\u7684\u60c5\u51b5\uff1a<\/p>\n<ul>\n<li>M&gt;0\u8868\u793a\u4ece\u547d\u4ee4\u6267\u884c\u5f00\u59cb\uff0c\u5230\u5e94\u7528\u5b8cfile\u548cpos\u8868\u793a\u7684binlog\u4f4d\u7f6e\uff0c\u4e00\u5171\u6267\u884c\u4e86M\u4e2a\u4e8b\u52a1<\/li>\n<li>\u5982\u679c\u6267\u884c\u671f\u95f4\uff0c\u5907\u5e93\u7684\u540c\u6b65\u7ebf\u7a0b\u53d1\u751f\u5f02\u5e38\uff0c\u5219\u8fd4\u56denull<\/li>\n<li>\u5982\u679c\u7b49\u5f85\u8d85\u8fc7N\u79d2\uff0c\u8fd4\u56de-1<\/li>\n<li>\u5982\u679c\u521a\u5f00\u59cb\u6267\u884c\u7684\u65f6\u5019\uff0c\u53d1\u73b0\u5df2\u7ecf\u6267\u884c\u4e86\u8fc7\u4e86\u8fd9\u4e2apos\uff0c\u5219\u8fd4\u56de0<\/li>\n<\/ul>\n<p>\u5f53\u4e00\u4e2a\u4e8b\u52a1\u6267\u884c\u5b8c\u6210\u540e\uff0c\u6211\u4eec\u8981\u9a6c\u4e0a\u53d1\u8d77\u4e00\u4e2a\u67e5\u8be2\u8bf7\u6c42\uff0c\u53ef\u4ee5\u901a\u8fc7\u4e0b\u9762\u7684\u6b65\u9aa4\u5b9e\u73b0\uff1a<\/p>\n<p>1.\u5f53\u4e00\u4e2a\u4e8b\u52a1\u6267\u884c\u5b8c\u6210\u540e\uff0c\u9a6c\u4e0a\u6267\u884cshow master status\uff0c\u83b7\u53d6\u4e3b\u5e93\u7684File\u548cPosition<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000044178562\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>2.\u9009\u62e9\u4e00\u4e2a\u4ece\u5e93\u6267\u884c\u67e5\u8be2<\/p>\n<p>3.\u5728\u4ece\u5e93\u4e0a\u6267\u884c select master\/_pos\/_wait(File,Poistion,1)<\/p>\n<p>4.\u5982\u679c\u8fd4\u56de\u7684\u503c&gt;=0\uff0c\u5219\u5728\u8fd9\u4e2a\u4ece\u5e93\u4e0a\u6267\u884c<\/p>\n<p>5.\u5426\u5219\u56de\u4e3b\u5e93\u67e5\u8be2<\/p>\n<p>\u8fd9\u91cc\u6211\u4eec\u5047\u8bbe\uff0c\u8fd9\u6761\u67e5\u8be2\u8bf7\u6c42\u5728\u4ece\u5e93\u4e0a\u6700\u591a\u7b49\u5f851s,\u90a3\u4e48\u5982\u679c1s\u5185master\/_pos\/_wait\u8fd4\u56de\u4e00\u4e2a\u5927\u4e8e\u7b49\u4e8e0\u7684\u6570\uff0c\u90a3\u4e48\u5c31\u80fd\u4fdd\u8bc1\u5728\u8fd9\u4e2a\u4ece\u5e93\u4e0a\u80fd\u67e5\u5230\u521a\u6267\u884c\u5b8c\u7684\u4e8b\u52a1\u7684\u6700\u65b0\u7684\u6570\u636e\u3002<\/p>\n<p>\u4e0a\u8ff0\u7684\u6b65\u9aa45\u662f\u8fd9\u7c7b\u65b9\u6848\u7684\u515c\u5e95\u65b9\u6848\uff0c\u56e0\u4e3a\u4ece\u5e93\u7684\u5ef6\u8fdf\u65f6\u95f4\u4e0d\u53ef\u63a7\uff0c\u4e0d\u80fd\u65e0\u9650\u7b49\u5f85\uff0c\u6240\u4ee5\u5982\u679c\u8d85\u65f6\uff0c\u5c31\u5e94\u8be5\u653e\u5f03\uff0c\u5230\u4e3b\u5e93\u67e5\u8be2\u3002<\/p>\n<p>\u53ef\u80fd\u6709\u540c\u5b66\u4f1a\u89c9\u7684\uff0c\u5982\u679c\u6240\u6709\u7684\u5ef6\u8fdf\u90fd\u8d85\u8fc71s\uff0c\u90a3\u4e48\u6240\u6709\u7684\u538b\u529b\u90fd\u5230\u4e86\u4e3b\u5e93\uff0c\u786e\u5b9e\u662f\u8fd9\u6837\u7684\uff0c\u4f46\u662f\u6309\u7167\u6211\u4eec\u8bbe\u5b9a\u7684\u4e0d\u5141\u8bb8\u51fa\u73b0\u8fc7\u671f\u8bfb\uff0c\u90a3\u4e48\u5c31\u53ea\u6709\u4e24\u79cd\u9009\u62e9\uff0c\u8981\u4e48\u8d85\u65f6\u653e\u5f03\uff0c\u8981\u4e48\u8f6c\u5230\u4e3b\u5e93\uff0c\u5177\u4f53\u9009\u62e9\u54ea\u79cd\uff0c\u9700\u8981\u6211\u4eec\u6839\u636e\u4e1a\u52a1\u8fdb\u884c\u5177\u4f53\u7684\u5206\u6790\u3002<\/p>\n<h4>5.\u7b49GTID\u65b9\u6848<\/h4>\n<p>\u5982\u679c\u6570\u636e\u5e93\u5f00\u542f\u7684GTID\u6a21\u5f0f\uff0c\u90a3\u4e48\u76f8\u5e94\u7684\u4e5f\u6709\u7b49GTID\u7684\u65b9\u6848<\/p>\n<pre><code> select wait_for_executed_gtid_set(gtid_set, 1);\n\n\n<\/code><\/pre>\n<p>\u8fd9\u6761\u547d\u4ee4\u7684\u903b\u8f91\u662f\uff1a<\/p>\n<p>1.\u7b49\u5f85\uff0c\u76f4\u5230\u8fd9\u4e2a\u5e93\u6267\u884c\u7684\u4e8b\u52a1\u4e2d\u5305\u542b\u4f20\u5165\u7684giid_set\u96c6\u5408\uff0c\u8fd4\u56de0<\/p>\n<p>2.\u8d85\u65f6\u8fd4\u56de1<\/p>\n<p>\u5728\u524d\u9762\u7b49\u5f85\u4e3b\u5e93\u4f4d\u70b9\u7684\u65b9\u6848\u4e2d\uff0c\u6267\u884c\u5b8c\u4e8b\u52a1\u540e\uff0c\u9700\u8981\u5230\u4e3b\u5e93\u6267\u884cshow master status\u3002\u4ecemysql5.7.6\u5f00\u59cb\uff0c\u5141\u8bb8\u4e8b\u52a1\u6267\u884c\u5b8c\u6210\u540e\uff0c\u628a\u8fd9\u4e2a\u4e8b\u52a1\u6267\u884c\u7684GTID\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\uff0c\u8fd9\u6837\u7b49\u5f85GTIID\u7684\u65b9\u6848\u5c31\u51cf\u5c11\u4e86\u4e00\u6b21\u67e5\u8be2\u3002<\/p>\n<p>\u8fd9\u65f6\u7b49GTID\u65b9\u6848\u7684\u6d41\u7a0b\u5c31\u53d8\u6210\u8fd9\u6837\uff1a<\/p>\n<p>1.\u4e8b\u52a1\u6267\u884c\u5b8c\u6210\u540e\uff0c\u4ece\u8fd4\u56de\u5305\u89e3\u6790\u83b7\u53d6\u8fd9\u4e2a\u4e8b\u52a1\u7684GTID,\u8bb0\u4e3agtid1<\/p>\n<p>2.\u9009\u5b9a\u4e00\u4e2a\u4ece\u5e93\u6267\u884c\u67e5\u8be2<\/p>\n<p>3.\u5728\u4ece\u5e93\u4e0a\u6267\u884cselect wait\/_for\/_executed\/_gtid\/_set(gtid1,1)<\/p>\n<p>4.\u5982\u679c\u8fd4\u56de0\uff0c\u5219\u5728\u8fd9\u4e2a\u4ece\u5e93\u4e0a\u6267\u884c\u67e5\u8be2<\/p>\n<p>5.\u5426\u5219\u56de\u5230\u4e3b\u5e93\u67e5\u8be2<\/p>\n<p>\u548c\u7b49\u5f85\u4e3b\u5e93\u4f4d\u70b9\u65b9\u6848\u4e00\u6837\uff0c\u6700\u540e\u7684\u515c\u5e95\u65b9\u6848\u90fd\u662f\u8f6c\u5230\u4e3b\u5e93\u67e5\u8be2\u4e86\uff0c\u9700\u8981\u7efc\u5408\u4e1a\u52a1\u8003\u8651\u786e\u5b9a\u65b9\u6848<\/p>\n<p>\u4e0a\u9762\u7684\u4e8b\u7269\u6267\u884c\u5b8c\u6210\u540e\uff0c\u4ece\u8fd4\u56de\u7684\u5305\u4e2d\u89e3\u6790GTID\uff0cmysql\u5176\u5b9e\u6ca1\u6709\u63d0\u4f9b\u5bf9\u5e94\u7684\u547d\u4ee4\uff0c\u53ef\u4ee5\u53c2\u8003Mysql\u63d0\u4f9b\u7684api(<a target=\"_blank\" href=\"https:\/\/link.segmentfault.com\/?enc=ZXmUMhehhdx%2BuispIiRNSQ%3D%3D.VN3LVp87VnytXfyjHDto6P3diqNzJeiFQM7MVZAkhYOD10r%2FUFB9MdZJSQvt8gZyjUUdK5ZyOYoEWuNdNbdOs64qr8umXWFmRe43OFY7yzY%3D\" rel=\"noopener noreferrer\">https:\/\/dev.mysql.com\/doc\/c-api\/8.0\/en\/mysql-session-track-get-first.html<\/a>),\u5728\u6211\u4eec\u7684\u5ba2\u6237\u7aef\u53ef\u4ee5\u8c03\u7528\u8fd9\u4e2a\u51fd\u6570\u83b7\u53d6GTID<\/p>\n<h2>\u56db\u3001\u603b\u7ed3<\/h2>\n<p>\u4ee5\u4e0a\u7b80\u5355\u4ecb\u7ecd\u4e86\u8bfb\u5199\u5206\u79bb\u67b6\u6784\uff0c\u548c\u51fa\u73b0\u4e3b\u4ece\u5ef6\u8fdf\u540e\uff0c\u5982\u679c\u6211\u4eec\u7528\u7684\u8bfb\u5199\u5206\u79bb\u7684\u67b6\u6784\uff0c\u90a3\u4e48\u6211\u4eec\u5e94\u8be5\u600e\u4e48\u5904\u7406\u8fd9\u79cd\u60c5\u51b5\uff0c\u76f8\u4fe1\u5728\u65e5\u5e38\u6211\u4eec\u7684\u4e3b\u4ece\u8fd8\u662f\u6216\u591a\u6216\u5c11\u7684\u5b58\u5728\u5ef6\u8fdf\u3002\u4e0a\u9762\u4ecb\u7ecd\u7684\u51e0\u79cd\u65b9\u6848\uff0c\u6709\u4e9b\u65b9\u6848\u770b\u4e0a\u53bb\u5341\u5206\u4e0d\u9760\u8c31\uff0c\u6709\u4e9b\u65b9\u6848\u505a\u4e86\u4e00\u4e9b\u59a5\u534f\uff0c\u4f46\u662f\u90fd\u6709\u5b9e\u9645\u7684\u5e94\u7528\u573a\u666f\uff0c\u9700\u8981\u6211\u4eec\u6839\u636e\u81ea\u8eab\u7684\u4e1a\u52a1\u60c5\u51b5\uff0c\u5408\u7406\u9009\u62e9\u5bf9\u5e94\u7684\u65b9\u6848\u3002<\/p>\n<p>\u4f46\u8bdd\u8bf4\u56de\u6765\uff0c\u5bfc\u81f4\u8fc7\u671f\u8bfb\u7684\u672c\u8d28\u8fd8\u662f\u4e00\u5199\u591a\u8bfb\u5bfc\u81f4\u7684\uff0c\u5728\u5b9e\u9645\u7684\u5e94\u7528\u4e2d\uff0c\u53ef\u80fd\u6709\u522b\u7684\u4e0d\u7528\u7b49\u5f85\u5c31\u53ef\u4ee5\u6c34\u5e73\u6269\u5c55\u7684\u6570\u636e\u5e93\u65b9\u6848\uff0c\u4f46\u8fd9\u5f80\u5f80\u90fd\u662f\u901a\u8fc7\u727a\u7272\u5199\u6027\u80fd\u83b7\u5f97\u7684\uff0c\u4e5f\u5c31\u662f\u9700\u8981\u6211\u4eec\u5728\u8bfb\u6027\u80fd\u548c\u5199\u6027\u80fd\u4e4b\u95f4\u505a\u4e2a\u6743\u8861\u3002<\/p>\n<p>\u6587\u4e2d\u6709\u4e0d\u592a\u4e25\u8c28\u6216\u8005\u9519\u8bef\u7684\u5730\u65b9\u8fd8\u671b\u5927\u5bb6\u591a\u591a\u6307\u6b63\u3002<\/p>\n<blockquote>\n<p>\u4f5c\u8005\uff1a\u4eac\u4e1c\u96f6\u552e \u5c1a\u6709\u667a<\/p>\n<p>\u6765\u6e90\uff1a\u4eac\u4e1c\u4e91\u5f00\u53d1\u8005\u793e\u533a \u8f6c\u8f7d\u8bf7\u6ce8\u660e\u6765\u6e90<\/p>\n<\/blockquote>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000044178554\">https:\/\/segmentfault.com\/a\/1190000044178554<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001\u4e3b\u4ece\u67b6\u6784 \u4e3a\u4ec0\u4e48\u6211\u4eec\u8981\u8fdb\u884c\u8bfb\u5199\u5206\u79bb\uff1f\u4e2a\u4eba\u89c9\u5f97\u8fd8\u662f\u4e1a\u52a1\u53d1\u5c55\u5230\u4e00\u5b9a\u7684\u89c4\u6a21\uff0c\u9a71\u52a8\u6280\u672f\u67b6\u6784\u7684\u6539\u9769\uff0c\u8bfb\u5199\u5206\u79bb\u53ef\u4ee5\u51cf\u8f7b [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-10008221","post","type-post","status-publish","format-standard","hentry","category-share"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10008221","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10008221"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10008221\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10008221"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10008221"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10008221"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}