mycat 集群双主双从

数据库主从备从搭建参考：《mysql主备从》

mycat安装参考：《安装mycat2》

 

ip端口
8066	mycat
3307	master	主
3308	slave	从
3309	master01	备
3310	slave01	从

进入master、slave、slave01创建用户，作为数据源连接使用

CREATE USER 'mycat'@'%' IDENTIFIED BY '123123';
GRANT ALL PRIVILEGES ON *.* to 'mycat'@'%';
FLUSH PRIVILEGES;

参考《通过注释配置》

Navicat连接mycat，在Navicat窗口执行如下

# 创建数据源

/*+ mycat:createDataSource{
	"dbType":"MysqL",
	"idleTimeout":60000,
	"initsqls":[],
	"initsqlsGetConnection":true,
	"instanceType":"READ_WRITE",
	"maxCon":1000,
	"maxConnectTimeout":3000,
	"maxRetryCount":5,
	"minCon":1,
	"name":"master",
	"password":"123123",
	"type":"JDBC",
	"url":"jdbc:MysqL://192.168.153.19:3307/mydb1?useUnicode=true&serverTimezone=Asia/Shanghai&characterEncoding=UTF-8",
	"user":"mycat",
	"weight":0
} */;


/*+ mycat:createDataSource{
	"dbType":"MysqL",
	"idleTimeout":60000,
	"initsqls":[],
	"initsqlsGetConnection":true,
	"instanceType":"READ",
	"maxCon":1000,
	"maxConnectTimeout":3000,
	"maxRetryCount":5,
	"minCon":1,
	"name":"slave",
	"password":"123123",
	"type":"JDBC",
	"url":"jdbc:MysqL://192.168.153.19:3308/mydb1?useUnicode=true&serverTimezone=Asia/Shanghai&characterEncoding=UTF-8",
	"user":"mycat",
	"weight":0
} */;

/*+ mycat:createDataSource{
	"dbType":"MysqL",
	"idleTimeout":60000,
	"initsqls":[],
	"initsqlsGetConnection":true,
	"instanceType":"READ_WRITE",
	"maxCon":1000,
	"maxConnectTimeout":3000,
	"maxRetryCount":5,
	"minCon":1,
	"name":"master01",
	"password":"123123",
	"type":"JDBC",
	"url":"jdbc:MysqL://192.168.153.19:3309/mydb1?useUnicode=true&serverTimezone=Asia/Shanghai&characterEncoding=UTF-8",
	"user":"mycat",
	"weight":0
} */;

/*+ mycat:createDataSource{
	"dbType":"MysqL",
	"idleTimeout":60000,
	"initsqls":[],
	"initsqlsGetConnection":true,
	"instanceType":"READ",
	"maxCon":1000,
	"maxConnectTimeout":3000,
	"maxRetryCount":5,
	"minCon":1,
	"name":"slave01",
	"password":"123123",
	"type":"JDBC",
	"url":"jdbc:MysqL://192.168.153.19:3310/mydb1?useUnicode=true&serverTimezone=Asia/Shanghai&characterEncoding=UTF-8",
	"user":"mycat",
	"weight":0
} */;

查看/usr/local/mycat/conf/datasources文件夹下，就会生成相应的数据源配置文件

 

 

 创建集群配置

/*! mycat:createCluster{
	"clusterType":"MASTER_SLAVE",
	"heartbeat":{
		"heartbeatTimeout":1000,
		"maxRetry":3,
		"minSwitchTimeInterval":300,
		"slaveThreshold":0
	},
	"masters":[
		"master","master01"   // master节点
	],
	"maxCon":200,
	"name":"master-slave",
	"readBalanceType":"BALANCE_ALL",
	"replicas":[
		 "slave","slave","master01"  //从库 master01即作为备机也作为从机
	],
	"switchType":"SWITCH"
} */;

 

 

 

创建Schema

/*+ mycat:createSchema{
	"customTables":{},
	"globalTables":{},
	"normalTables":{},
	"schemaName":"mydb1",      // 物理库
	"shardingTables":{},
	"targetName":"master-slave"   // 配置的集群名称 取/usr/local/mycat/conf/clusters/master-slave.cluster.json 配置中的name
} */;

注：可以直接修改原先的MysqL.schema.json配置，否则废弃掉mv MysqL.schema.json MysqL.schema.bak

启动mycat建议用console方便调试

/usr/local/mycat/bin/mycat console