Canal Chapter 5

Canal Quick installation and deployment official website address ：https://github.com/alibaba/canal/wiki/ClientExample0. Machine preparation Canal Server side ：slave1MySQL Address ：slave11. download canal Download address ：https://github.com/alibaba/canal/releases/tag/canal-1.1.2 2. decompression mkdir /home/hadoop/app/canaltar zxvf canal.deployer-1.1.2.tar.gz -C /home/hadoop/app/canal After decompression , Get into /home/hadoop/app/canal Catalog , You can see the following structure 3. Modify the configuration file cd confcd example/vi instance.properties Modify the following items ## mysql serverId（ Cannot be associated with mysql The configuration of the server_id identical ）canal.instance.mysql.slaveId=1234# position info Need to change to your own database information canal.instance.master.address=slave1:3306# username/password Need to change to your own database information canal.instance.dbUsername=canalcanal.instance.dbPassword=canalcanal.instance.connectionCharset = UTF-8canal.instance.defaultDatabaseName =test The illustration ： You can also configure filtered tables , Here is no filtering 4. Download the client code 1） Download address https://github.com/alibaba/canal/releases/tag/canal-1.1.22） Import the source code into IDEAsssIDEA—>Open Open the downloaded project source code 3） find canal Test code SimpleCanalClientTest.javacanal-1.1.2—>example—>SimpleCanalClientTest.java take ip It is amended as follows canal host ip 5. Permission to modify related files chmod -R 777 /tmp Change the temporary directory to " Anyone can read, write and execute "6. start-up canal service bin/startup.sh Observe canal journal tail -f canal.log If there is no error, it indicates that the startup is normal .example Take a look at ： There are still errors ： The illustration ： Reset the password to canal 了 , And then in my.cnf The middle one should be removed
1. start-up canal The test program

8. Prepare database test data in slave1 Import into the database of the node stu.sql Table data , Then you can be right stu Insert table data 、 Delete or modify . 9. Observe IDEA The data operation of the console on the database table , You can print on the console binlog journal .