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etcd Configuration

etcd is a distributed key-value store system. ElasticJob supports using etcd3 as a registry center.

Maven Dependency

<dependency>
    <groupId>org.apache.shardingsphere.elasticjob</groupId>
    <artifactId>elasticjob-registry-center-etcd</artifactId>
    <version>${elasticjob.version}</version>
</dependency>

Configuration

Configuration Properties

Name Data Type Default Value Description
serverLists String etcd server IP list
namespace String etcd namespace
connectionTimeoutMilliseconds long 5000 Connection timeout in milliseconds
username String Authentication username
password String Authentication password
authority String Authority header for HTTP/2

Core Configuration Description

serverLists:

Include IP and port, multiple addresses are separated by commas, protocol prefix is required, such as: http://host1:2379,http://host2:2379

namespace:

etcd namespace for isolating different job clusters. It is recommended to use meaningful names, such as: elasticjob

username and password:

etcd authentication information. If etcd has authentication enabled, you need to configure both username and password.

authority:

HTTP/2 authority header, used for some special network environment configurations.

Usage Examples

Java API

import org.apache.shardingsphere.elasticjob.reg.etcd.EtcdConfiguration;
import org.apache.shardingsphere.elasticjob.reg.etcd.EtcdRegistryCenter;
import org.apache.shardingsphere.elasticjob.reg.base.CoordinatorRegistryCenter;

public class EtcdRegistryCenterExample {
    
    public static void main(String[] args) {
        EtcdConfiguration etcdConfig = new EtcdConfiguration("http://host1:2379,http://host2:2379", "elasticjob");
        etcdConfig.setConnectionTimeoutMilliseconds(5000);
        etcdConfig.setUsername("root");
        etcdConfig.setPassword("password");
        
        CoordinatorRegistryCenter registryCenter = new EtcdRegistryCenter(etcdConfig);
        registryCenter.init();
        
        // Use registry center...
        
        registryCenter.close();
    }
}

Spring Boot Starter and Spring Namespace

The Spring Boot Starter and the Spring Namespace only support ZooKeeper at present, so etcd can only be used through the Java API or RegistryCenterFactory. See the Registry Center Configuration page for details.