{"id":3934,"date":"2019-02-27T14:13:56","date_gmt":"2019-02-27T06:13:56","guid":{"rendered":"http:\/\/www.xttblog.com\/?p=3934"},"modified":"2019-10-17T18:30:04","modified_gmt":"2019-10-17T10:30:04","slug":"%e9%98%bf%e9%87%8c%e5%b7%b4%e5%b7%b4%e5%bc%80%e6%ba%90%e7%9a%84-canal-%e4%bd%bf%e7%94%a8%e6%95%99%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/www.xttblog.com\/?p=3934","title":{"rendered":"\u963f\u91cc\u5df4\u5df4\u5f00\u6e90\u7684 Canal \u4f7f\u7528\u6559\u7a0b"},"content":{"rendered":"<p>\u6211\u767e\u5ea6\u4e86\u4e00\u4e0b&nbsp;Canal\uff0c\u53d1\u73b0\u4e0e&nbsp;Canal \u76f8\u5173\u7684\u6280\u672f\u6587\u7ae0\u5e76\u4e0d\u591a\uff0c\u518d\u52a0\u4e0a\u6211\u4e0a\u4e00\u7bc7\u6587\u7ae0\u300a<a href=\"https:\/\/www.xttblog.com\/?p=3932\">\u963f\u91cc canal \u5185\u5b58\u6ea2\u51fa Java heap space \u95ee\u9898\u89e3\u51b3<\/a>\u300b\u4e2d\u8d70\u5165\u7684\u8bef\u533a\uff0c\u5bfc\u81f4\u4e86\u6211\u60f3\u8981\u5199\u4e00\u7bc7\u5173\u4e8e Canal \u6559\u7a0b\u7684\u6587\u7ae0\u3002\u6240\u4ee5\u4fbf\u6709\u4e86\u672c\u6587\uff0c\u4e0b\u9762\u5c31\u548c\u6211\u4e00\u8d77\u6765\u770b\u770b\u5982\u4f55\u4f7f\u7528 canal \u5427\u3002<\/p>\n<p><img decoding=\"async\" style=\"width: 586px;height: 263px\" src=\"https:\/\/images.weserv.nl\/?url=https:\/\/wx1.sinaimg.cn\/large\/8fa5dcfcly1g0kummvwz0j20ga07bq4c.jpg\" alt=\"Canal \u6559\u7a0b\"><\/p>\n<p>\u6839\u636e <a href=\"https:\/\/github.com\/alibaba\/canal\">https:\/\/github.com\/alibaba\/canal<\/a> \u4e0a\u7684\u539f\u7406\u89e3\u91ca\uff0c\u6211\u4eec\u77e5\u9053 canal \u4f1a\u6a21\u62df mysql slave \u7684\u4ea4\u4e92\u534f\u8bae\uff0c\u4f2a\u88c5\u81ea\u5df1\u4e3a mysql slave\uff0c\u7136\u540e\u5411 mysql master \u53d1\u9001 dump \u534f\u8bae\u3002<\/p>\n<p>mysql master \u6536\u5230 dump \u8bf7\u6c42\uff0c\u5f00\u59cb\u63a8\u9001 binary log \u7ed9 slave(\u4e5f\u5c31\u662f canal)\uff0c\u7136\u540e canal \u89e3\u6790 binary log \u5bf9\u8c61(\u539f\u59cb\u4e3a byte\u6d41)\u3002<\/p>\n<p>\u7ecf canal \u89e3\u6790\u8fc7\u7684\u5bf9\u8c61\uff0c\u6211\u4eec\u4f7f\u7528\u8d77\u6765\u5c31\u975e\u5e38\u7684\u65b9\u4fbf\u4e86\u3002<\/p>\n<p>\u518d\u6839\u636e <a href=\"https:\/\/github.com\/alibaba\/canal\/releases\">https:\/\/github.com\/alibaba\/canal\/releases<\/a> \u63d0\u4f9b\u7684\u7248\u672c\u4fe1\u606f\uff0c\u4f60\u4f1a\u53d1\u73b0 canal \u5176\u5b9e\u76f8\u5f53\u4e8e\u4e00\u4e2a\u4e2d\u95f4\u4ef6\uff0c\u4e13\u95e8\u7528\u6765\u89e3\u6790 MySQL \u7684 binlog \u65e5\u5fd7\u3002canal \u89e3\u6790\u597d\u4e86\u4e4b\u540e\uff0c\u4f1a\u5c01\u88c5\u6210\u4e00\u4e2a\u6570\u636e\u5bf9\u8c61\uff0c\u901a\u8fc7 protobuf3.0 \u534f\u8bae\u8fdb\u884c\u4ea4\u4e92\uff0c\u8ba9 canal \u5ba2\u6237\u7aef\u8fdb\u884c\u6d88\u8d39\u3002<\/p>\n<p>\u6839\u636e\u4e0a\u9762\u7684\u89e3\u91ca\uff0c\u4ee5\u53ca canal \u63d0\u4f9b\u7684\u7248\u672c\u4fe1\u606f\uff0c\u6211\u4eec\u5728\u4f7f\u7528&nbsp;canal \u7684\u65f6\u5019\uff0c\u9996\u9009\u8981\u5b89\u88c5\u4e00\u4e2a&nbsp;canal.deployer-1.1.2.tar.gz \u8fdb\u884c\u89e3\u6790 MySQL \u7684 binlog \u65e5\u5fd7\u3002<\/p>\n<p><img decoding=\"async\" style=\"width: 491px;height: 257px\" src=\"https:\/\/images.weserv.nl\/?url=https:\/\/wx1.sinaimg.cn\/large\/8fa5dcfcly1g0ky6pb57tj20dn07574v.jpg\" alt=\"Canal \u90e8\u7f72\u5b89\u88c5\"><\/p>\n<p>\u4e0b\u8f7d\u540e\uff0c\u590d\u5236 canal.deployer-1.1.2.tar.gz \u5230 MySQL \u4e3b\u673a\u4e0a\uff0c\u6bd4\u5982\u653e\u5728 \/var\/xttblog\/otter \u76ee\u5f55\u4e0b\u3002\u7136\u540e\u4f9d\u6b21\u6267\u884c\u4e0b\u9762\u7684\u547d\u4ee4\uff1a<\/p>\n<pre class=\"brush:bash;\">mkdir canal\ncd canal\ntar -zxvf ..\/canal.deployer-1.1.2.tar.gz<\/pre>\n<p>\u7136\u540e\u4fee\u6539 canal \u7684\u914d\u7f6e\u6587\u4ef6 vi conf\/example\/instance.properties\u3002<\/p>\n<p><img decoding=\"async\" style=\"width: 423px;height: 147px\" src=\"https:\/\/images.weserv.nl\/?url=https:\/\/wx1.sinaimg.cn\/large\/8fa5dcfcly1g0ky92x898j20br043gmd.jpg\" alt=\"instance.properties \u914d\u7f6e\"><\/p>\n<p>\u8fd9\u4e09\u9879\u6539\u6210\u4f60\u81ea\u5df1\u7684\uff0c\u6bd4\u5982\u6211\u7684\u914d\u7f6e\u5982\u4e0b\uff1a<\/p>\n<pre class=\"brush:java;\">canal.instance.dbUsername=xttblog\ncanal.instance.dbPassword=xttblog\ncanal.instance.connectionCharset = UTF-8\ncanal.instance.defaultDatabaseName =xttblog<\/pre>\n<p>\u7136\u540e\u4fdd\u5b58\u5e76\u9000\u51fa\u3002\uff08VI \u6a21\u5f0f\u4e0b\uff0c\u6309 Esc \u8f93\u5165 :wq \u56de\u8f66\u9000\u51fa\u3002\uff09<\/p>\n<p>\u63a5\u7740\uff0c\u6211\u4eec\u68c0\u67e5\u4e00\u4e0b MySQL \u7684\u914d\u7f6e\u3002\u786e\u5b9a\u7248\u672c\u548c\u662f\u5426\u5f00\u542f\u4e86 binlog \u65e5\u5fd7\uff0c\u4ee5\u53ca\u65e5\u5fd7\u683c\u5f0f\u3002<\/p>\n<pre class=\"brush:java;\">show variables like 'binlog_format';\nshow variables like 'log_bin';\nselect version();<\/pre>\n<p>canal \u652f\u6301 binlog \u683c\u5f0f\u4e3a ROW \u7684\u6a21\u5f0f\u3002\u5982\u679c\u4f60\u6ca1\u5f00\u542f binlog\uff0c\u5e76\u4e14\u683c\u5f0f\u662f\u975e row \u7684\uff0c\u5efa\u8bae\u4fee\u6539\u4e00\u4e0b mysql \u7684\u914d\u7f6e\u6587\u4ef6\u3002<\/p>\n<p>\u6267\u884c mysql \u2013help | grep my.cnf \u627e\u5230 mysql \u7684 my.cnf \u6587\u4ef6\u3002<\/p>\n<p>\u6267\u884c vi \/etc\/my.cnf \u547d\u4ee4\u3002\u6dfb\u52a0\u4e0b\u9762 3 \u4e2a\u914d\u7f6e\u3002<\/p>\n<pre class=\"brush:bash;\">log-bin=mysql-bin #\u6dfb\u52a0\u8fd9\u4e00\u884c\u5c31ok \nbinlog-format=ROW #\u9009\u62e9row\u6a21\u5f0f \nserver_id=1 #\u914d\u7f6emysql replaction\u9700\u8981\u5b9a\u4e49\uff0c\u4e0d\u80fd\u548ccanal\u7684slaveId\u91cd\u590d<\/pre>\n<p>\u7136\u540e\u4fdd\u5b58\u5e76\u9000\u51fa\u3002\uff08VI \u6a21\u5f0f\u4e0b\uff0c\u6309 Esc \u8f93\u5165 :wq \u56de\u8f66\u9000\u51fa\u3002\uff09<\/p>\n<p>\u63a5\u7740\u6267\u884c sudo service mysqld restart \u91cd\u542f MySQL\u3002<\/p>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\u4f60\u7684 mysql \u7528\u6237\uff0c\u5fc5\u987b\u8981\u6709 REPLICATION SLAVE \u6743\u9650\u3002\u8be5\u6743\u9650\u6388\u4e88 slave \u670d\u52a1\u5668\u4ee5\u8be5\u8d26\u6237\u8fde\u63a5 master \u540e\u53ef\u4ee5\u6267\u884c replicate \u64cd\u4f5c\u7684\u6743\u5229\u3002<\/p>\n<p>\u5982\u679c\u6ca1\u6709\u6743\u9650\uff0c\u5219\u4f7f\u7528 root \u8d26\u6237\u767b\u5f55\u8fdb MySQL\uff0c\u6267\u884c\u4e0b\u9762\u7684\u8bed\u53e5\uff0c\u521b\u5efa\u7528\u6237\uff0c\u5206\u914d\u6743\u9650\u3002<\/p>\n<pre class=\"brush:bash;\">CREATE USER xttblog IDENTIFIED BY \u2018xttblog\u2019; \nGRANT SELECT, REPLICATION SLAVE, REPLICATION CLIENT ON . TO \u2018\u2018xttblog\u2019\u2019@\u2019%\u2019;\nFLUSH PRIVILEGES;<\/pre>\n<p>MySQL \u542f\u52a8\u540e\uff0c\u5c31\u53ef\u4ee5\u5f00\u542f canal \u670d\u52a1\u4e86\u3002<\/p>\n<pre class=\"brush:bash;\">\/var\/xttblog\/otter\/canal\/bin\/startup.sh<\/pre>\n<p>\u5f00\u542f\u540e\uff0c\u89c2\u5bdf canal \u670d\u52a1\u7684\u65e5\u5fd7\uff0c\u786e\u4fdd\u670d\u52a1\u6b63\u5e38\u3002<\/p>\n<pre class=\"brush:bash;\">tail -n 200 \/var\/xttblog\/otter\/canal\/logs\/canal\/canal.log<\/pre>\n<p><img decoding=\"async\" style=\"width: 521px;height: 73px\" src=\"https:\/\/images.weserv.nl\/?url=https:\/\/wx1.sinaimg.cn\/large\/8fa5dcfcly1g0kyc7b3ijj20eh021t96.jpg\" alt=\"\u67e5\u770b canal \u7684\u65e5\u5fd7\"><\/p>\n<p>\u786e\u5b9a\u6ca1\u6709\u95ee\u9898\u540e\uff0c\u5f00\u59cb\u7f16\u5199\u6211\u4eec\u7684\u6d4b\u8bd5\u7a0b\u5e8f\u3002<\/p>\n<p>pom.xml \u4e2d\u5bfc\u5165\u4e0b\u9762\u7684\u4f9d\u8d56\u3002<\/p>\n<pre class=\"brush:xml;\">&lt;dependency&gt;\n    &lt;groupId&gt;com.alibaba.otter&lt;\/groupId&gt;\n    &lt;artifactId&gt;canal.client&lt;\/artifactId&gt;\n    &lt;version&gt;1.1.2&lt;\/version&gt;\n&lt;\/dependency&gt;<\/pre>\n<p>\u7136\u540e\u7f16\u5199\u4e0b\u9762\u7684 Java \u4ee3\u7801\u3002<\/p>\n<pre class=\"brush:java;\">package com.xttblog.canal.test;\nimport java.net.InetSocketAddress;\nimport java.util.List;\nimport com.alibaba.otter.canal.client.CanalConnectors;\nimport com.alibaba.otter.canal.client.CanalConnector;\nimport com.alibaba.otter.canal.common.utils.AddressUtils;\nimport com.alibaba.otter.canal.protocol.Message;\nimport com.alibaba.otter.canal.protocol.CanalEntry.Column;\nimport com.alibaba.otter.canal.protocol.CanalEntry.Entry;\nimport com.alibaba.otter.canal.protocol.CanalEntry.EntryType;\nimport com.alibaba.otter.canal.protocol.CanalEntry.EventType;\nimport com.alibaba.otter.canal.protocol.CanalEntry.RowChange;\nimport com.alibaba.otter.canal.protocol.CanalEntry.RowData;\n\/**\n * CanalTest\n * @author www.xttblog.com\n * @date 2019\/2\/27 \u4e0a\u534810:01\n *\/\npublic class CanalTest {\n    public static void main(String args[]) {\n        \/\/ \u521b\u5efa\u94fe\u63a5\n        CanalConnector connector = CanalConnectors.newSingleConnector(\n                new InetSocketAddress(AddressUtils.getHostIp(),\n                11111), \"example\", \"\", \"\");\n        int batchSize = 1000;\n        int emptyCount = 0;\n        try {\n            connector.connect();\n            connector.subscribe(\".*\\\\..*\");\n            connector.rollback();\n            int totalEmptyCount = 120;\n            while (emptyCount &lt; totalEmptyCount) {\n                Message message = connector.getWithoutAck(batchSize); \/\/ \u83b7\u53d6\u6307\u5b9a\u6570\u91cf\u7684\u6570\u636e\n                long batchId = message.getId();\n                int size = message.getEntries().size();\n                if (batchId == -1 || size == 0) {\n                    emptyCount++;\n                    System.out.println(\"empty count : \" + emptyCount);\n                    try {\n                        Thread.sleep(1000);\n                    } catch (InterruptedException e) {\n                    }\n                } else {\n                    emptyCount = 0;\n                    \/\/ System.out.printf(\"message[batchId=%s,size=%s] \\n\", batchId, size);\n                    printEntry(message.getEntries());\n                }\n\n                connector.ack(batchId); \/\/ \u63d0\u4ea4\u786e\u8ba4\n                \/\/ connector.rollback(batchId); \/\/ \u5904\u7406\u5931\u8d25, \u56de\u6eda\u6570\u636e\n            }\n            System.out.println(\"empty too many times, exit\");\n        } finally {\n            connector.disconnect();\n        }\n    }\n    private static void printEntry(List&lt;Entry&gt; entrys) {\n        for (Entry entry : entrys) {\n            if (entry.getEntryType() == EntryType.TRANSACTIONBEGIN \n                    || entry.getEntryType() == EntryType.TRANSACTIONEND) {\n                continue;\n            }\n            RowChange rowChage = null;\n            try {\n                rowChage = RowChange.parseFrom(entry.getStoreValue());\n            } catch (Exception e) {\n                throw new RuntimeException(\"ERROR ## parser of eromanga-event \" +\n                        \"has an error , data:\" + entry.toString(), e);\n            }\n            EventType eventType = rowChage.getEventType();\n            System.out.println(String.format(\"================&amp;gt; \" +\n                            \"binlog[%s:%s] , name[%s,%s] , eventType : %s\",\n                    entry.getHeader().getLogfileName(), entry.getHeader().getLogfileOffset(),\n                    entry.getHeader().getSchemaName(), entry.getHeader().getTableName(),\n                    eventType));\n            for (RowData rowData : rowChage.getRowDatasList()) {\n                if (eventType == EventType.DELETE) {\n                    printColumn(rowData.getBeforeColumnsList());\n                } else if (eventType == EventType.INSERT) {\n                    printColumn(rowData.getAfterColumnsList());\n                } else {\n                    System.out.println(\"-------&amp;gt; before\");\n                    printColumn(rowData.getBeforeColumnsList());\n                    System.out.println(\"-------&amp;gt; after\");\n                    printColumn(rowData.getAfterColumnsList());\n                }\n            }\n        }\n    }\n    private static void printColumn(List&lt;Column&gt; columns) {\n        for (Column column : columns) {\n            System.out.println(column.getName() + \n                    \" : \" + column.getValue() + \n                    \"    update=\" + column.getUpdated());\n        }\n    }\n}<\/pre>\n<p>\u7136\u540e\u6267\u884c main \u65b9\u6cd5\u3002\u4f60\u518d\u4fee\u6539\u4fee\u6539 MySQL \u4e2d\u7684\u6570\u636e\uff0c\u4f60\u4f1a\u53d1\u73b0\u6240\u6709\u6539\u53d8\u90fd\u540c\u6b65\u8fc7\u6765\u4e86\u3002<\/p>\n<!-- <audio autoplay=\"autoplay\" height=\"100\" width=\"100\" hidden=\"true\"><source src=\"https:\/\/c.coka.la\/orAvPR.mp3\" type=\"audio\/mp3\"\/><\/audio><img decoding=\"async\" src=\"https:\/\/images.weserv.nl\/?url=https:\/\/ws3.sinaimg.cn\/large\/8fa5dcfcgy1g4em3rzar5j20ib089ae0.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/> --><p><!-- <img decoding=\"async\" src=\"https:\/\/raw.githubusercontent.com\/xmt1139057136\/xttblog\/master\/8fa5dcfcgy1g4em3rzar5j20ib089ae0.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/>--><img decoding=\"async\" src=\"https:\/\/saas.51autoparts.cn\/api\/admin\/sys-file\/oss\/file?fileName=84db51f8561e448f9a4fda2eff0811f9.jpg\" alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/><\/p><p>\u6700\u540e\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\u7684\u4e2a\u4eba\u5fae\u4fe1\u516c\u4f17\u53f7\uff1a\u4e1a\u4f59\u8349\uff08yyucao\uff09\uff01<b>\u53ef\u52a0\u4f5c\u8005\u5fae\u4fe1\u53f7\uff1a<font color=\"red\">xttblog2<\/font>\u3002\u5907\u6ce8\uff1a\u201c1\u201d\uff0c\u6dfb\u52a0\u535a\u4e3b\u5fae\u4fe1\u62c9\u4f60\u8fdb\u5fae\u4fe1\u7fa4\u3002\u5907\u6ce8\u9519\u8bef\u4e0d\u4f1a\u540c\u610f\u597d\u53cb\u7533\u8bf7\u3002<\/b>\u518d\u6b21\u611f\u8c22\u60a8\u7684\u5173\u6ce8\uff01\u540e\u7eed\u6709\u7cbe\u5f69\u5185\u5bb9\u4f1a\u7b2c\u4e00\u65f6\u95f4\u53d1\u7ed9\u60a8\uff01\u539f\u521b\u6587\u7ae0\u6295\u7a3f\u8bf7\u53d1\u9001\u81f3532009913@qq.com\u90ae\u7bb1\u3002\u5546\u52a1\u5408\u4f5c\u4e5f\u53ef\u6dfb\u52a0\u4f5c\u8005\u5fae\u4fe1\u8fdb\u884c\u8054\u7cfb\uff01<\/p><p>\u672c\u6587\u539f\u6587\u51fa\u5904\uff1a<a href=\"https:\/\/www.xttblog.com\">\u4e1a\u4f59\u8349<\/a>\uff1a &raquo; <a href=\"https:\/\/www.xttblog.com\/?p=3934\">\u963f\u91cc\u5df4\u5df4\u5f00\u6e90\u7684 Canal \u4f7f\u7528\u6559\u7a0b<\/a><\/p><!-- <div class=\"bd-reward-stl\"><button id=\"bdRewardBtn\"><span><\/span><\/button><\/div> -->","protected":false},"excerpt":{"rendered":"<p>\u6211\u767e\u5ea6\u4e86\u4e00\u4e0b&nbsp;Canal\uff0c\u53d1\u73b0\u4e0e&nbsp;Canal \u76f8\u5173\u7684\u6280\u672f\u6587\u7ae0\u5e76\u4e0d\u591a\uff0c\u518d\u52a0\u4e0a\u6211\u4e0a\u4e00\u7bc7\u6587\u7ae0\u300a\u963f [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[1918,1938,83,392,393],"class_list":["post-3934","post","type-post","status-publish","format-standard","hentry","category-java","tag-binlog","tag-canal","tag-mysql"],"_links":{"self":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/3934","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3934"}],"version-history":[{"count":2,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/3934\/revisions"}],"predecessor-version":[{"id":4526,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/3934\/revisions\/4526"}],"wp:attachment":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3934"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3934"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3934"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}