[MYCAT] MYCAT configuration file

Mycat The configuration file

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1. service （server）

Service related configuration , stay conf Under the path , The default configuration is enough

2. user （user）

Configure user related information , stay conf/users Under the path

Command mode ：{ user name }.user.json

vim root.user.json

{
    
    "ip":null,
    "password":"123456",
    "transactionType":"xa",
    "username":"root",
    "isolation":3
}

#  Field meaning 
#ip： Client access ip, Suggestion is empty , After filling in, the client will be ip Limit 
#username： user name 
#password： password 

#isolation： Initialized transaction isolation level 
READ_UNCOMMITTED:1
READ_COMMITTED:2
REPEATED_READ:3, Default 
SERIALIZABLE:4

#transactionType： Transaction type 
proxy  Local transactions , Involving more than  1  Transactions of databases ,commit  Phase failure can lead to inconsistencies , But the compatibility is the best 
xa  Business , You need to confirm whether the storage node cluster type supports  XA

3. data source （datasource）

To configure mycat Connected data source information , stay conf/datasources Under the path

Command mode ：{ Data source name }.datasource.json

vim protorypeDs.datasource.json

{
    
    "dbType": "mysql",
    "idleTimeout": 60000,
    "initSqls": [],
    "initSqlsGetConnection": true,
    "instanceType": "READ_WRITE",
    "maxCon": 1000,
    "maxConnectTimeout": 3000,
    "maxRetryCount": 5,
    "minCon": 1,
    "name": "prototype",
    "password": "123456",
    "type": "JDBC",
    "url":
    "jdbc:mysql://127.0.0.1:3306/mysql?useUnicode=true&serverTimezone=UTC",
    "user": "root",
    "weight": 0,
    "queryTimeout":30,//mills
}

# Field meaning 
# dbType： Database type ,mysql
# name： user name 
# password： password 
# type： Data source type , Default JDBC
# url： Database access address 
# idleTimeout： Idle connection timeout 
# initSqls： initialization SQL
# initSqlsGetConnection： about jdbc Whether to execute every time you get a connection initSqls
# instanceType： Configure whether the instance is read-only or read-write ,READ_WRITE,READ,WRITE
# weight： The weight 

#  Connection related configuration 
"maxCon": 1000,
"maxConnectTimeout": 3000,
"maxRetryCount": 5,
"minCon": 1

4. colony （cluster）

Configure cluster information , stay conf/clusters Under the path

stay mycat in , Create a cluster , A corresponding cluster file

Command mode ：{ Cluster name }.cluster.json

vim prototype.cluster.json

{
    
    "clusterType":"MASTER_SLAVE",
    "heartbeat":{
    
        "heartbeatTimeout":1000,
        "maxRetryCount":3,//2021-6-4 Before is maxRetry, Later, it is corrected to maxRetryCount
        "minSwitchTimeInterval":300,
        "slaveThreshold":0
    },
    "masters":[ // Configure multiple master nodes , During the main connection, a data source that detects the survival will be selected as the main node 
    	"prototypeDs"
    ],
    "replicas":[// Configure multiple slave nodes 
    	"xxxx"
    ],
    "maxCon":200,
    "name":"prototype",
    "readBalanceType":"BALANCE_ALL",
    "switchType":"SWITCH",
    "timer":{
     //MySQL Cluster heartbeat cycle , Configure to start the cluster heartbeat ,Mycat Actively detect master-slave delay and high availability master-slave handover 
        "initialDelay": 30,
        "period":5,
        "timeUnit":"SECONDS"
    },
    readBalanceName:"BALANCE_ALL",
    writeBalanceName:"BALANCE_ALL",
}

# Field meaning 
# clusterType： Cluster type , Optional value SINGLE_NODE: Single node ,MASTER_SLAVE: Common master and slave ,GARELA_CLUSTER:garela cluster/PXC colony ,MHA：MHA  colony ,MGR：MGR  colony 

# readBalanceType： Query load balancing policy 
 Optional value :
BALANCE_ALL( The default value is )
 Get all data sources in the cluster 
BALANCE_ALL_READ
 Get the data sources that are allowed to be read in the cluster 
BALANCE_READ_WRITE
 Get the data sources that are allowed to read and write in the cluster , But data sources that are allowed to read take precedence 
BALANCE_NONE
 Get the data sources that are allowed to write in the cluster , That is, select... From the master node 

# switchType： Switch type 
 Optional value :
NOT_SWITCH: No master-slave switching 
SWITCH: Switch between master and slave 

Official website ：mycat file

5. Logical library table （schema）

Configure logical library table , Realize the sub database and sub table , stay conf/schemas route

stay mycat Create a logic library in , It will generate a corresponding schema file

Command mode ：{ Library name }.schema.json

vim mysql.schema.json

#  Library Configuration 
{
    
    "schemaName": "mydb",
	"targetName": "prototype"
}
# schemaName： Logical library name 
# targetName： Destination data source or cluster ,targetName Automatically from prototype Target load test The physical table or view under the library is regarded as a single table ,prototype Must be mysql The server 

# Single table configuration 
{
    
    "schemaName": "mysql-test",
    "normalTables": {
    
    "role_edges": {
    
    "createTableSQL":null,// Optional 
    "locality": {
    
        "schemaName": "mysql",// Physics library , Optional 
        "tableName": "role_edges",// Physical watch , Optional 
        "targetName": "prototype"// Point to cluster , Or data sources 
	}
}
......
# See sub database and sub table for detailed configuration