Ignite集群管理——基于Zookeeper的节点发现

Ignite支持基于组播，静态IP，Zookeeper，JDBC等方式发现节点，本文主要介绍基于Zookeeper的节点发现。

环境准备，两台笔记本电脑A，B。A笔记本上使用VMware虚拟机安装了Ubuntu系统C。

1、 C安装Zookeeper

由于主要测试Ignite，这里仅仅简单安装一个zookeeper节点，下载zookeeper解压后，直接执行zookeeper目录下的bin/zkServer.sh start命令则成功启动zookeeper。

查看Ubuntu系统C的IP地址为192.168.1.104，zookeeper默认端口为12181。

注意：这里VMware虚拟机的网络适配器一定要选择桥接模式，否则A机器无法访问虚拟机。

2、 A系统运行Ignite节点1；

代码中加粗的部分便是Ignite注册代码，十分简单。

package com.coshaho.learn.ignite.cluster;

import org.apache.ignite.Ignite;
import org.apache.ignite.IgniteCache;
import org.apache.ignite.Ignition;
import org.apache.ignite.cache.CacheMode;
import org.apache.ignite.configuration.CacheConfiguration;
import org.apache.ignite.configuration.IgniteConfiguration;
import org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi;
import org.apache.ignite.spi.discovery.tcp.ipfinder.zk.TcpDiscoveryZookeeperIpFinder;

/**
 *
 * IgniteCluster01.java Create on 2017年6月3日 下午10:52:38
 *
 * 类功能说明:   基于zookeeper集群
 *
 * Copyright: Copyright(c) 2013
 * Company: COSHAHO
 * @Version 1.0
 * @Author coshaho
 */
public class IgniteCluster01
{
    public static void main(String[] args)
    {
        TcpDiscoverySpi spi = new TcpDiscoverySpi();
        TcpDiscoveryZookeeperIpFinder ipFinder = new TcpDiscoveryZookeeperIpFinder();
        // Specify ZooKeeper connection string.
        ipFinder.setZkConnectionString("192.168.1.104:12181");
        spi.setIpFinder(ipFinder);
        IgniteConfiguration cfg = new IgniteConfiguration();
        // Override default discovery SPI.
        cfg.setDiscoverySpi(spi);
        // Start Ignite node.
        Ignite ignite =Ignition.start(cfg);


        System.out.println("IgniteCluster1 start OK.");
        CacheConfiguration<Integer, String> cacheCfg = new CacheConfiguration<Integer, String>();
        cacheCfg.setBackups(1);
        cacheCfg.setCacheMode(CacheMode.PARTITIONED);
        cacheCfg.setName("myCache");
        IgniteCache<Integer, String> cache = ignite.getOrCreateCache(cacheCfg);
        cache.put(1, "ignite1");
        System.out.println(cache.get(1));
        System.out.println(cache.get(2));
    }
}

3、 B系统运行Ignite节点2；

package com.coshaho.learn.ignite.cluster;

import org.apache.ignite.Ignite;
import org.apache.ignite.IgniteCache;
import org.apache.ignite.Ignition;
import org.apache.ignite.cache.CacheMode;
import org.apache.ignite.configuration.CacheConfiguration;
import org.apache.ignite.configuration.IgniteConfiguration;
import org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi;
import org.apache.ignite.spi.discovery.tcp.ipfinder.zk.TcpDiscoveryZookeeperIpFinder;

public class IgniteCluster02
{
    public static void main(String[] args)
    {
        TcpDiscoverySpi spi = new TcpDiscoverySpi();
        TcpDiscoveryZookeeperIpFinder ipFinder = new TcpDiscoveryZookeeperIpFinder();
        // Specify ZooKeeper connection string.
        ipFinder.setZkConnectionString("192.168.1.104:12181");
        spi.setIpFinder(ipFinder);
        IgniteConfiguration cfg = new IgniteConfiguration();
        // Override default discovery SPI.
        cfg.setDiscoverySpi(spi);
        // Start Ignite node.
        Ignite ignite =Ignition.start(cfg);
        System.out.println("IgniteCluster2 start OK.");
        CacheConfiguration<Integer, String> cacheCfg = new CacheConfiguration<Integer, String>();
        cacheCfg.setBackups(1);
        cacheCfg.setCacheMode(CacheMode.PARTITIONED);
        cacheCfg.setName("myCache");
        IgniteCache<Integer, String> cache = ignite.getOrCreateCache(cacheCfg);
        cache.put(2, "ignite2");
        System.out.println(cache.get(1));
        System.out.println(cache.get(2));
    }
}

可以看到，Ignite节点2可以成功访问到Ignite节点1存入缓存的数据。