准备

• 对于自建 MySQL , 需要先开启 Binlog 写入功能，配置 binlog-format 为 ROW 模式，my.cnf 中配置如下

  [mysqld]
  
  log-bin=mysql-bin # 开启 binlog
  
  binlog-format=ROW # 选择 ROW 模式
  
  server_id=1 # 配置 MySQL replaction 需要定义，不要和 canal 的 slaveId 重复
  
  

  • 注意：针对阿里云 RDS for MySQL , 默认打开了 binlog , 并且账号默认具有 binlog dump 权限 , 不需要任何权限或者 binlog 设置,可以直接跳过这一步

• 授权 canal 链接 MySQL 账号具有作为 MySQL slave 的权限, 如果已有账户可直接 grant

  CREATE USER canal IDENTIFIED BY 'canal';
  
  GRANT SELECT, REPLICATION SLAVE, REPLICATION CLIENT ON *.* TO 'canal'@'%';
  
  -- GRANT ALL PRIVILEGES ON *.* TO 'canal'@'%' ;
  
  FLUSH PRIVILEGES;

启动

• 下载 canal, 访问 release 页面 , 选择需要的包下载, 如以 1.0.17 版本为例

  wget https://github.com/alibaba/canal/releases/download/canal-1.0.17/canal.deployer-1.0.17.tar.gz

• 解压缩

  mkdir /tmp/canal
  
  tar zxvf canal.deployer-$version.tar.gz  -C /tmp/canal
  
  

  • 解压完成后，进入 /tmp/canal 目录，可以看到如下结构

    drwxr-xr-x 2 jianghang jianghang  136 2013-02-05 21:51 bin
    
    drwxr-xr-x 4 jianghang jianghang  160 2013-02-05 21:51 conf
    
    drwxr-xr-x 2 jianghang jianghang 1.3K 2013-02-05 21:51 lib
    
    drwxr-xr-x 2 jianghang jianghang   48 2013-02-05 21:29 logs
    
    

• 配置修改

  vi conf/example/instance.properties
  
  

  ## mysql serverId
  
  canal.instance.mysql.slaveId = 1234
  
  #position info，需要改成自己的数据库信息
  
  canal.instance.master.address = 127.0.0.1:3306
  
  canal.instance.master.journal.name =
  
  canal.instance.master.position =
  
  canal.instance.master.timestamp =
  
  #canal.instance.standby.address =
  
  #canal.instance.standby.journal.name =
  
  #canal.instance.standby.position =
  
  #canal.instance.standby.timestamp =
  
  #username/password，需要改成自己的数据库信息
  
  canal.instance.dbUsername = canal
  
  canal.instance.dbPassword = canal
  
  canal.instance.defaultDatabaseName =
  
  canal.instance.connectionCharset = UTF-8
  
  #table regex
  
  canal.instance.filter.regex = .\*\\\\..\*

  • canal.instance.connectionCharset 代表数据库的编码方式对应到 java 中的编码类型，比如 UTF-8，GBK , ISO-8859-1
  • 如果系统是1个 cpu，需要将 canal.instance.parser.parallel 设置为 false

• 启动

  sh bin/startup.sh
  
  

• 查看 server 日志

  vi logs/canal/canal.log</pre>
  
  

  2013-02-05 22:45:27.967 [main] INFO  com.alibaba.otter.canal.deployer.CanalLauncher - ## start the canal server.
  
  2013-02-05 22:45:28.113 [main] INFO  com.alibaba.otter.canal.deployer.CanalController - ## start the canal server[10.1.29.120:11111]
  
  2013-02-05 22:45:28.210 [main] INFO  com.alibaba.otter.canal.deployer.CanalLauncher - ## the canal server is running now ......
  
  

• 查看 instance 的日志

  vi logs/example/example.log
  
  

  2013-02-05 22:50:45.636 [main] INFO  c.a.o.c.i.spring.support.PropertyPlaceholderConfigurer - Loading properties file from class path resource [canal.properties]
  
  2013-02-05 22:50:45.641 [main] INFO  c.a.o.c.i.spring.support.PropertyPlaceholderConfigurer - Loading properties file from class path resource [example/instance.properties]
  
  2013-02-05 22:50:45.803 [main] INFO  c.a.otter.canal.instance.spring.CanalInstanceWithSpring - start CannalInstance for 1-example
  
  2013-02-05 22:50:45.810 [main] INFO  c.a.otter.canal.instance.spring.CanalInstanceWithSpring - start successful....
  
  

• 关闭

  sh bin/stop.sh

php操作

composer require xingwenge/canal_php

https://github.com/xingwenge/canal-php

<?php

use xingwenge\canal_php\CanalClient;

use xingwenge\canal_php\CanalConnectorFactory;

use xingwenge\canal_php\Fmt;

require "./vendor/autoload.php";

try {

    //$client = CanalConnectorFactory::createClient(CanalClient::TYPE_SOCKET_CLUE);

    $client = CanalConnectorFactory::createClient(CanalClient::TYPE_SWOOLE);

    $client->connect("192.168.33.10", 11111);

    $client->checkValid();

    $client->subscribe("1001", "example", ".*\\..*");

    //$client->subscribe("1001", "example", "test.*"); # 设置过滤

    while (true) {

        $message = $client->get(100);

        if ($entries = $message->getEntries()) {

            foreach ($entries as $key=>$entry) {

                Fmt::println($entry);

            }

        }

    }

    $client->disConnect();

} catch (\Exception $e) {

    echo $e->getMessage(), PHP_EOL;

}

[root@localhost wang]# php index.php 

================> binlog[mysql-bin.000015 : 242],name[test,user], eventType: 1

id : 56  update= true

name : d  update= true

================> binlog[mysql-bin.000015 : 438],name[test,user], eventType: 1

id : 57  update= true

name : d  update= true

================> binlog[mysql-bin.000015 : 634],name[test,user], eventType: 1

id : 58  update= true

name : d  update= true

================> binlog[mysql-bin.000015 : 830],name[test,user], eventType: 1

id : 59  update= true

name : d  update= true