canalClient+canal.deployer-1.1.0配合MySQL5.7时，数据库权限问题

问题描述：

2018-08-24 17:02:24.611 [destination = example , address = /127.0.0.1:3306 , EventParser] ERROR c.a.o.c.p.inbound.mysql.rds.RdsBinlogEventParserProxy - dump address /127.0.0.1:3306 has an error, retrying. caused by 
com.alibaba.otter.canal.parse.exception.CanalParseException: java.io.IOException: ErrorPacket [errorNumber=1142, fieldCount=-1, message=SHOW VIEW command denied to user 'canal'@'localhost' for table 'actor_info', sqlState=42000, sqlStateMarker=#]
 with command: show create table `sakila`.`actor`;show create table `sakila`.`actor_info`;show create table `sakila`.`address`;show create table `sakila`.`category`;show create table `sakila`.`city`;show create table `sakila`.`country`;show create table `sakila`.`customer`;show create table `sakila`.`customer_list`;show create table `sakila`.`film`;show create table `sakila`.`film_actor`;show create table `sakila`.`film_category`;show create table `sakila`.`film_list`;show create table `sakila`.`film_text`;show create table `sakila`.`inventory`;show create table `sakila`.`language`;show create table `sakila`.`nicer_but_slower_film_list`;show create table `sakila`.`payment`;show create table `sakila`.`rental`;show create table `sakila`.`sales_by_film_category`;show create table `sakila`.`sales_by_store`;show create table `sakila`.`staff`;show create table `sakila`.`staff_list`;show create table `sakila`.`store`;
Caused by: java.io.IOException: ErrorPacket [errorNumber=1142, fieldCount=-1, message=SHOW VIEW command denied to user 'canal'@'localhost' for table 'actor_info', sqlState=42000, sqlStateMarker=#]
 with command: show create table `sakila`.`actor`;show create table `sakila`.`actor_info`;show create table `sakila`.`address`;show create table `sakila`.`category`;show create table `sakila`.`city`;show create table `sakila`.`country`;show create table `sakila`.`customer`;show create table `sakila`.`customer_list`;show create table `sakila`.`film`;show create table `sakila`.`film_actor`;show create table `sakila`.`film_category`;show create table `sakila`.`film_list`;show create table `sakila`.`film_text`;show create table `sakila`.`inventory`;show create table `sakila`.`language`;show create table `sakila`.`nicer_but_slower_film_list`;show create table `sakila`.`payment`;show create table `sakila`.`rental`;show create table `sakila`.`sales_by_film_category`;show create table `sakila`.`sales_by_store`;show create table `sakila`.`staff`;show create table `sakila`.`staff_list`;show create table `sakila`.`store`;
    at com.alibaba.otter.canal.parse.driver.mysql.MysqlQueryExecutor.queryMulti(MysqlQueryExecutor.java:109) ~[canal.parse.driver-1.1.0.jar:na]
    at com.alibaba.otter.canal.parse.inbound.mysql.MysqlConnection.queryMulti(MysqlConnection.java:107) ~[canal.parse-1.1.0.jar:na]
    at com.alibaba.otter.canal.parse.inbound.mysql.tsdb.DatabaseTableMeta.dumpTableMeta(DatabaseTableMeta.java:175) ~[canal.parse-1.1.0.jar:na]
    at com.alibaba.otter.canal.parse.inbound.mysql.tsdb.DatabaseTableMeta.rollback(DatabaseTableMeta.java:129) ~[canal.parse-1.1.0.jar:na]
    at com.alibaba.otter.canal.parse.inbound.mysql.AbstractMysqlEventParser.processTableMeta(AbstractMysqlEventParser.java:91) ~[canal.parse-1.1.0.jar:na]
    at com.alibaba.otter.canal.parse.inbound.AbstractEventParser$3.run(AbstractEventParser.java:188) ~[canal.parse-1.1.0.jar:na]
    at java.lang.Thread.run(Unknown Source) [na:1.8.0_181]

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在执行canal.deployer-1.1.0源码中的example示例时，文档中的

通过对数据库MYSQL的canal进行权限设置，

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

然而，这对于MySQL５.７版本而言，需要的赋权限还是不够的，会出现上面的问题。所以需要更多权限授予

 

 GRANT ALL ON *.* TO 'canal'@'%';

 flush privileges;
这样就可以解决上面的权限不足问题。