{"id":5400,"date":"2020-07-30T00:21:31","date_gmt":"2020-07-29T16:21:31","guid":{"rendered":"http:\/\/39.97.231.10\/?p=5400"},"modified":"2020-07-30T00:21:31","modified_gmt":"2020-07-29T16:21:31","slug":"pt-heartbeat%e4%bd%bf%e7%94%a8%e5%8f%8a%e9%97%ae%e9%a2%98%e6%b1%87%e6%80%bb","status":"publish","type":"post","link":"http:\/\/www.weijing.co\/?p=5400","title":{"rendered":"pt-heartbeat\u4f7f\u7528\u53ca\u95ee\u9898\u6c47\u603b"},"content":{"rendered":"<div>\n<div>\n<div>\n<div>\n\u68c0\u6d4bMySQL\u4e3b\u4ece\u5ef6\u8fdf\uff0c\u901a\u5e38\u4f7f\u7528MySQL\u81ea\u5e26\u7684Seconds_Behind_Master\uff0c\u4f46\u662f\u8fd9\u4e2a\u72b6\u6001\u53d8\u91cf\u53cd\u6620\u7684\u662f\u79d2\u7ea7\u522b\u7684\u590d\u5236\u5ef6\u8fdf\uff0c\u65e0\u6cd5\u505a\u5230\u66f4\u7cbe\u786e\u7684\u5ef6\u8fdf\u68c0\u6d4b\u3002\u6b64\u5916\uff0c\u670d\u52a1\u5668\u65f6\u95f4\u4e0d\u540c\u6b65\u4e5f\u4f1a\u5bfc\u81f4\u8fd9\u4e2a\u72b6\u6001\u53d8\u91cf\u4e0d\u80fd\u771f\u5b9e\u53cd\u6620\u4e3b\u4ece\u95f4\u7684\u590d\u5236\u5ef6\u8fdf\u3002\u4e0b\u9762\u4ecb\u7ecd\u4e00\u4e2a\u66f4\u7406\u60f3\u7684MySQL\u4e3b\u4ece\u590d\u5236\u5ef6\u8fdf\u68c0\u6d4b\u5de5\u5177pt-heartbeat\u3002<\/p>\n<h5>pt-heartbeat\u539f\u7406\uff1a<\/h5>\n<p>pt-heartbeat\u9700\u8981\u5728\u6570\u636e\u5e93\u4e2d\u521b\u5efa\u4e00\u5f20\u8868\uff0c\u8868\u4e2d\u6709\u4e00\u4e2a\u65f6\u95f4\u6233\u5b57\u6bb5\uff0c\u6bcf\u9694\u4e00\u6bb5\u65f6\u95f4\u53bb\u66f4\u65b0\u8fd9\u4e2a\u65f6\u95f4\u6233\uff0c\u901a\u8fc7\u5bf9\u6bd4\u4ece\u5e93\u7684\u8fd9\u6761\u8bb0\u5f55\u65f6\u95f4\u6233\u4e0e\u5f53\u524d\u7cfb\u7edf\u65f6\u95f4\uff0c\u6765\u83b7\u5f97MySQL\u4e3b\u4ece\u5ef6\u8fdf\u7684\u5927\u5c0f\u3002\u8868\u7ed3\u6784\u5982\u4e0b\uff1a<\/p>\n<pre>CREATE TABLE `heartbeat` (\n\u00a0\u00a0`ts` varchar(26) NOT NULL,\n\u00a0\u00a0`server_id` int(10) unsigned NOT NULL,\n\u00a0\u00a0`file` varchar(255) DEFAULT NULL,\n\u00a0\u00a0`position` bigint(20) unsigned DEFAULT NULL,\n\u00a0\u00a0`relay_master_log_file` varchar(255) DEFAULT NULL,\n\u00a0\u00a0`exec_master_log_pos` bigint(20) unsigned DEFAULT NULL,\n\u00a0\u00a0PRIMARY KEY (`server_id`)\n) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;\n<\/pre>\n<h5>pt-heartbeat\u4f7f\u7528\uff1a<\/h5>\n<p>\u7248\u672c\uff1a<\/p>\n<ul>\n<li>pt-heartbeat 3.1.0<\/li>\n<li>MySQL 5.7.19<\/li>\n<\/ul>\n<p>\u5728MySQL\u4e3b\u4ece\u96c6\u7fa4\u4e2d\u521b\u5efapt-heartbeat\u7528\u7684\u6570\u636e\u5e93\u548c\u8d26\u53f7\u5bc6\u7801\u3002<br \/>\n\u5728\u4e3b\u5e93\u521b\u5efaheartbeat\u8868\uff0c\u5e76\u5728\u540e\u53f0\u5b9a\u65f6\u66f4\u65b0heartbeat\u8868\u8bb0\u5f55\uff1a<br \/>\npt-heartbeat -D pt_heartbeat -h master_ip -uxxx -p\\&#8217;xxx\\&#8217; &#8211;update &#8211;daemonize &#8211;create-table<br \/>\n\u68c0\u6d4b\u4ece\u5e93\u590d\u5236\u5ef6\u8fdf\uff1a<br \/>\npt-heartbeat -D pt_heartbeat -h slave_ip -uxxx -p\\&#8217;xxx\\&#8217; &#8211;master-server-id=1 &#8211;monitor<br \/>\n\u8f93\u51fa\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n<pre>0.00s [ 0.00s, 0.00s, 0.00s ]\n0.00s [ 0.00s, 0.00s, 0.00s ]\n0.00s [ 0.00s, 0.00s, 0.00s ]\n0.00s [ 0.00s, 0.00s, 0.00s ]\n0.00s [ 0.00s, 0.00s, 0.00s ]\n0.00s [ 0.00s, 0.00s, 0.00s ]\n0.00s [ 0.00s, 0.00s, 0.00s ]\n0.00s [ 0.00s, 0.00s, 0.00s ]\n0.00s [ 0.00s, 0.00s, 0.00s ]\n0.00s [ 0.00s, 0.00s, 0.00s ]\n0.00s [ 0.00s, 0.00s, 0.00s ]\n0.00s [ 0.00s, 0.00s, 0.00s ]\n0.00s [ 0.00s, 0.00s, 0.00s ]\n0.00s [ 0.00s, 0.00s, 0.00s ]\n<\/pre>\n<p>\u7b2c\u4e00\u5217\u8868\u793a\u5f53\u524d\u6700\u65b0\u7684\u590d\u5236\u5ef6\u8fdf\u65f6\u95f4\uff0c[ 0.00s, 0.00s, 0.00s ]\u8868\u793a1min\uff0c5min\uff0c15min\u7684\u5e73\u5747\u5ef6\u8fdf\u65f6\u95f4\u3002<\/p>\n<h5>pt-heartbeat\u95ee\u9898\uff1a<\/h5>\n<ol>\n<li>\u590d\u5236\u5ef6\u8fdf\u663e\u793a\u7cbe\u5ea6\u95ee\u9898\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u5ef6\u8fdf\u7684\u6700\u5c0f\u503c\u4e3a10ms\uff0c\u5c0f\u4e8e10ms\u7684\u5ef6\u8fdf\u90fd\u663e\u793a\u4e3a0\u3002pt-heartbeat\u5de5\u5177\u4e5f\u6ca1\u6709\u53c2\u6570\u6765\u8c03\u6574\u663e\u793a\u7cbe\u5ea6\u3002<\/li>\n<li>\u8f93\u51fa\u7ed3\u679c\u65e0\u6cd5\u91cd\u5b9a\u5411\uff0c\u867d\u7136\u53ef\u4ee5\u6307\u5b9a\u53c2\u6570&#8211;file\u00a0\u5c06\u7ed3\u679c\u6253\u5370\u5230\u6587\u4ef6\u4e2d\uff0c\u4f46\u662f\u6bcf\u4e2a\u95f4\u9694\uff0c\u90fd\u4f1a\u8986\u76d6\u4e0a\u4e00\u6b21\u7684\u7ed3\u679c\uff0c\u65e0\u6cd5\u4fdd\u7559\u5386\u53f2\u3002<\/li>\n<\/ol>\n<p>\u901a\u8fc7\u4fee\u6539pt-heartbeat\u6e90\u7801\/usr\/bin\/pt-heartbeat\uff0c\u89e3\u51b3\u4ee5\u4e0a2\u4e2a\u95ee\u9898\u3002<br \/>\n\u663e\u793a\u7cbe\u5ea6\u95ee\u9898\u4fee\u6539\u4ee3\u7801\u884c6310\u548c6314\uff0c\u5982\u4e0b\uff1a<\/p>\n<pre># 2.00s [\u00a0\u00a00.05s,\u00a0\u00a00.01s,\u00a0\u00a00.00s ]\n\u00a0\u00a0\u00a0my $format = ($hires_ts ? \\'%1$.6f\\' : \\'%1$4d\\') . \\\"s [ \\\";\n\u00a0\u00a0\u00a0my $findex = 2;\n\u00a0\u00a0\u00a0foreach (@$frames) {\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0$format .= $findex &gt; 2 ? \\', \\' : \\'\\';\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0$format .= \\'%\\'.$findex.\\'$5.6fs\\';\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0$findex++;\n\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0$format .= \\\" ]\\\";\n\u00a0\u00a0\u00a0$format .= ($o-&gt;get(\\'print-master-server-id\\') ? \\'\u00a0\u00a0%\\'.$findex.\\'$d\\' : \\'\\')\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0. \\\"\n\\\";\n<\/pre>\n<p>&#8211;file\u53c2\u6570\u7ed3\u679c\u8986\u76d6\u95ee\u9898\uff0c\u4fee\u6539\u4ee3\u7801\u884c6387\uff0c &gt; \u6539\u4e3a &gt;&gt; \uff0c\u5982\u4e0b\uff1a<\/p>\n<pre>my $output = sprintf $format, $delay, @vals, $pk_val;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if ( my $file = $o-&gt;get(\\'file\\') ) {\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0open my $file, \\'&gt;&gt;\\', $file\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0or die \\\"Can\\'t open $file: $OS_ERROR\\\";\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0print $file $output\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0or die \\\"Can\\'t print to $file: $OS_ERROR\\\";\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0close $file\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0or die \\\"Can\\'t close $file: $OS_ERROR\\\";\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0else {\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0print $output;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/pre>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u68c0\u6d4bMySQL\u4e3b\u4ece\u5ef6\u8fdf\uff0c\u901a\u5e38\u4f7f\u7528MySQL\u81ea\u5e26\u7684Seconds_Behind_Master\uff0c\u4f46\u662f\u8fd9\u4e2a\u72b6\u6001\u53d8\u91cf\u53cd &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"http:\/\/www.weijing.co\/?p=5400\"> <span class=\"screen-reader-text\">pt-heartbeat\u4f7f\u7528\u53ca\u95ee\u9898\u6c47\u603b<\/span> \u67e5\u770b\u5168\u6587 &raquo;<\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":""},"categories":[90,88],"tags":[],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"mailpoet_newsletter_max":false,"woocommerce_thumbnail":false,"woocommerce_single":false,"woocommerce_gallery_thumbnail":false,"shop_catalog":false,"shop_single":false,"shop_thumbnail":false},"uagb_author_info":{"display_name":"weijing","author_link":"http:\/\/www.weijing.co\/?author=4"},"uagb_comment_info":0,"uagb_excerpt":"\u68c0\u6d4bMySQL\u4e3b\u4ece\u5ef6\u8fdf\uff0c\u901a\u5e38\u4f7f\u7528MySQL\u81ea\u5e26\u7684Seconds_Behind_Master\uff0c\u4f46\u662f\u8fd9\u4e2a\u72b6\u6001\u53d8\u91cf\u53cd&hellip;","_links":{"self":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/5400"}],"collection":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5400"}],"version-history":[{"count":0,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/5400\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5400"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5400"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5400"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}