【ZK】ubuntu下zookeeper安装

参考链接：

https://blog.csdn.net/gaokao2011/article/details/17020209

https://blog.csdn.net/u011404265/article/details/72869920
知识点总结：

https://blog.csdn.net/abcde474524573/article/details/53026110

duboo中文：

https://dubbo.gitbooks.io/dubbo-user-book/content/preface/background.html

系统：

乌班图16.04

安装：

1、下载：

wget http://apache.osuosl.org/zookeeper/zookeeper-3.4.10/zookeeper-3.4.10.tar.gz

2、解压：

tar -xzvf zookeeper-3.4.6.tar.gz -C   /usr/local

3、复制配置文件：

cd conf
cp zoo_sample.cfg zoo.cfg

4、可以百度修改下配置文件内容，我没有修改也正常使用

5、启动：

sh zkServer.sh start //启动

报错：

zkServer.sh: 81: /usr/local/zookeeper-3.4.10/bin/zkEnv.sh: Syntax error: "(" unexpected (expecting "fi")

根据https://blog.csdn.net/u011404265/article/details/72869920提供的解决方案已解决

[email protected]:~# cd /bin/
[email protected]:/bin# ls -l /bin/sh
lrwxrwxrwx 1 root root 4 Dec 23 22:30 /bin/sh -> dash(默认)
[email protected]:/bin# ln -sf bash /bin/sh
[email protected]:/bin# ls -l /bin/sh
lrwxrwxrwx 1 root root 4 Dec 23 22:37 /bin/sh -> bash

使用：

我直接使用dubooDemo做的测试：

生产者：

public interface DemoService {

    String sayHello(String name);

}

public class DemoServiceImpl implements DemoService {

    public String sayHello(String name) {
        System.out.println("[" + new SimpleDateFormat("HH:mm:ss").format(new Date()) + "] Hello " + 
        name + ", request from consumer: " + RpcContext.getContext().getRemoteAddress());
        return "Hello " + name + ", response form provider: " + RpcContext.getContext().getLocalAddress();
    }

}

public class Provider {

    public static void main(String[] args) throws Exception {
        //Prevent to get IPV6 address,this way only work in debug mode
        //But you can pass use -Djava.net.preferIPv4Stack=true,then it work well whether in debug mode or not
        System.setProperty("java.net.preferIPv4Stack", "true");
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[]{"META-INF/spring/dubbo-demo-provider.xml"});
        context.start();

        System.in.read(); // press any key to exit
    }

}

<?xml version="1.0" encoding="UTF-8"?>
<!--
 - Copyright 1999-2011 Alibaba Group.
 -  
 - Licensed under the Apache License, Version 2.0 (the "License");
 - you may not use this file except in compliance with the License.
 - You may obtain a copy of the License at
 -  
 -      http://www.apache.org/licenses/LICENSE-2.0
 -  
 - Unless required by applicable law or agreed to in writing, software
 - distributed under the License is distributed on an "AS IS" BASIS,
 - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 - See the License for the specific language governing permissions and
 - limitations under the License.
-->
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
       xmlns="http://www.springframework.org/schema/beans"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
	http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">

    <!-- 提供方应用信息，用于计算依赖关系 -->
    <dubbo:application name="demo-provider"/>

    <!-- 使用multicast广播注册中心暴露服务地址 -->
    <!--<dubbo:registry address="multicast://224.5.6.7:1234"/>-->
    <dubbo:registry address="zookeeper://192.168.0.17:2181" />

    <!-- 用dubbo协议在20880端口暴露服务 -->
    <dubbo:protocol name="dubbo" port="20880"/>

    <!-- 和本地bean一样实现服务 -->
    <bean id="demoService" class="com.alibaba.dubbo.demo.provider.DemoServiceImpl"/>

    <!-- 声明需要暴露的服务接口 -->
    <dubbo:service interface="com.alibaba.dubbo.demo.DemoService" ref="demoService"/>

</beans>

消费者：

public class Consumer {

    public static void main(String[] args) {
        //Prevent to get IPV6 address,this way only work in debug mode
        //But you can pass use -Djava.net.preferIPv4Stack=true,then it work well whether in debug mode or not
        System.setProperty("java.net.preferIPv4Stack", "true");
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[]{"META-INF/spring/dubbo-demo-consumer.xml"});
        context.start();
        DemoService demoService = (DemoService) context.getBean("demoService"); // get remote service proxy

        while (true) {
            try {
                Thread.sleep(1000);
                String hello = demoService.sayHello("world"); // call remote method
                System.out.println(hello); // get result

            } catch (Throwable throwable) {
                throwable.printStackTrace();
            }


        }

    }
}

<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
       xmlns="http://www.springframework.org/schema/beans"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
	http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">

    <!-- 消费方应用名，用于计算依赖关系，不是匹配条件，不要与提供方一样 -->
    <dubbo:application name="demo-consumer"/>

    <!-- 使用multicast广播注册中心暴露发现服务地址 -->
    <!--<dubbo:registry address="multicast://224.5.6.7:1234"/>-->
    <dubbo:registry address="zookeeper://192.168.0.17:2181" />
    <!-- 生成远程服务代理，可以和本地bean一样使用demoService -->
    <dubbo:reference id="demoService" check="false" interface="com.alibaba.dubbo.demo.DemoService"/>

</beans>