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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

  1. Configure running mode in server.yaml.
  2. 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