Metadata Repository

Metadata Repository

Background

Apache ShardingSphere provides different metadata persistence methods for different running modes. Users can choose an appropriate way to store metadata while configuring the running mode.

Parameters

Database Repository

Type: JDBC

Mode: Standalone

Attributes:

Name	Type	Description	Default Value
provider	String	Type for metadata persist	H2
jdbc_url	String	JDBC URL	jdbc:h2:mem:config;DB_CLOSE_DELAY=-1;DATABASE_TO_UPPER=false;MODE=MYSQL
username	String	username	sa
password	String	password

ZooKeeper Repository

Type: ZooKeeper

Mode: Cluster

Attributes:

Name	Type	Description	Default Value
retryIntervalMilliseconds	int	Milliseconds of retry interval	500
maxRetries	int	Max retries of client connection	3
timeToLiveSeconds	int	Seconds of ephemeral data live	60
operationTimeoutMilliseconds	int	Milliseconds of operation timeout	500
digest	String	Password of login

Etcd Repository

Type: Etcd

Mode: Cluster

Attributes:

Name	Type	Description	Default Value
timeToLiveSeconds	long	Seconds of ephemeral data live	30
connectionTimeout	long	Seconds of connection timeout	30

Nacos Repository

Type: Nacos

Mode: Cluster

Attributes:

Name	Type	Description	Default Value
clusterIp	String	Unique identifier in cluster	Host IP
retryIntervalMilliseconds	long	Milliseconds of retry interval	500
maxRetries	int	Max retries for client to check data availability	3
timeToLiveSeconds	int	Seconds of ephemeral instance live	30

Consul Repository

Type: Consul

Mode: Cluster

Attributes:

Name	Type	Description	Default Value
timeToLiveSeconds	String	Seconds of ephemeral instance live	30s
blockQueryTimeToSeconds	long	Seconds of query timeout	60

Procedure

Configure running mode in server.yaml.
Configure metadata persistence warehouse type.

Sample

Standalone mode configuration method.

mode:
  type: Standalone
  repository:
    type: JDBC
    props:
      provider: H2
      jdbc_url: jdbc:h2:mem:config;DB_CLOSE_DELAY=-1;DATABASE_TO_UPPER=false;MODE=MYSQL
      username: test
      password: Test@123

Cluster mode.

mode:
  type: Cluster
  repository:
    type: zookeeper
    props:
      namespace: governance_ds
      server-lists: localhost:2181
      retryIntervalMilliseconds: 500
      timeToLiveSeconds: 60
      maxRetries: 3
      operationTimeoutMilliseconds: 500