以 Ubuntu 为例,安装 ZooKeeper
您将需要将Zookeeper的最新版本下载到/ opt目录。您可以使用以下命令下载它:
cd /opt
wget https://mirrors.estointernet.in/apache/zookeeper/zookeeper-3.6.2/apache-zookeeper-3.6.2-bin.tar.gz ```
下载完成后,使用以下命令解压缩下载的文件:
tar -xvzf apache-zookeeper-3.6.2-bin.tar.gz
接下来,使用以下命令将提取的目录重命名为zookeeper:
mv apache-zookeeper-3.6.2-bin zookeeper
接下来,使用以下命令更改zookeeper目录的所有权:
chown -R zookeeper:zookeeper /opt/zookeeper
在独立模式下配置ZooKeeper,您将需要创建ZooKeeper配置文件以独立模式设置ZooKeeper。您可以使用以下命令创建它: ``` nano /opt/zookeeper/conf/zoo.cfg
添加以下行: tickTime=2500 dataDir=/zookeeper clientPort=2181 maxClientCnxns=80 ```
``` cd /opt/zookeeper
bin/zkServer.sh start ```
ss -ntpl | grep 2181
![](https://gitee.com/qq343509740/BlogPic/raw/master/image/20201015161857.png)
##查看ip ifconfig
![](https://gitee.com/qq343509740/BlogPic/raw/master/image/20201015162150.png)
## 服务提供者
> 7-cloud-provider-zk-payment8004
### pom
```xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>SpringCloud_H_2020</artifactId>
<groupId>com.ray</groupId>
<version>1.0</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>7-cloud-provider-payment8004</artifactId>
<dependencies>
<dependency><!-- 引用自己定义的api通用包,可以使用Payment支付Entity -->
<groupId>com.ray</groupId>
<artifactId>1-cloud-api-commons</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!--监控-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<!--SpringBoot整合Zookeeper客户端-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
<exclusions>
<!--先排除自带的zookeeper3.5.3-->
<exclusion>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
</exclusion>
</exclusions>
</dependency>
<!--添加zookeeper3.6.2版本-->
<!-- https://mvnrepository.com/artifact/org.apache.zookeeper/zookeeper -->
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<version>3.6.2</version>
</dependency>
<!--热部署-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
</project>
# 8004 表示注册到 zookeeper 服务器的支持服务提供者端口
server:
port: 8004
# 服务别名 -- 在注册中心显示的名字(重要)
spring:
application:
name: cloud-provider-payment
cloud:
zookeeper:
# zookeeper 服务器 ip + port
connect-string: 192.168.116.128:2181
package com.ray.springcloud;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
/**
* @Description:
* @Author Administrator
* @Date 2020/10/11 9:19
* @Version 1.0
*/
@SpringBootApplication
@EnableDiscoveryClient // 该注解用于向使用 consul 或者 zookeeper 作为注册中心时注册服务
public class PaymentZkMain8004 {
public static void main(String[] args) {
SpringApplication.run(PaymentZkMain8004.class, args);
}
}
package com.ray.springcloud.controller;
import cn.hutool.core.lang.UUID;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* @Description:
* @Author Administrator
* @Date 2020/10/11 9:20
* @Version 1.0
*/
@Slf4j
@RestController
@RequestMapping(value = "/payment")
public class PaymentZkController {
@Value("${server.port}")
private String serverPort;
@RequestMapping(value = "zk")
public String zk() {
return "springCloud with zookeeper: " + serverPort + "\t" + UUID.randomUUID().toString();
}
}
一、启动项目,查看zookeeper是否注册成功
二、测试接口是否可用
http://localhost:8004/payment/zk
三、关闭8004,观察 zookeeper 服务器
结论:zookeeper 服务节点是临时节点
8-cloud-consumer-zk-order80
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>SpringCloud_H_2020</artifactId>
<groupId>com.ray</groupId>
<version>1.0</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>8-cloud-consumer-zk-order80</artifactId>
<dependencies>
<dependency><!-- 引用自己定义的api通用包,可以使用Payment支付Entity -->
<groupId>com.ray</groupId>
<artifactId>1-cloud-api-commons</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!--监控-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<!--SpringBoot整合Zookeeper客户端-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
<exclusions>
<!--先排除自带的zookeeper-->
<exclusion>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
</exclusion>
</exclusions>
</dependency>
<!--添加zookeeper3.6.2版本-->
<!-- https://mvnrepository.com/artifact/org.apache.zookeeper/zookeeper -->
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<version>3.6.2</version>
</dependency>
<!--热部署-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
</project>
# 8004 表示注册到 zookeeper 服务器的支持服务消费者端口
server:
port: 80
# 服务别名 -- 在注册中心显示的名字(重要)
spring:
application:
name: colud-consumer-zk-order
cloud:
zookeeper:
# zookeeper 服务器 ip + port
connect-string: 192.168.116.128:2181
package com.ray.springcloud;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
/**
* @Description:
* @Author Administrator
* @Date 2020/10/11 9:59
* @Version 1.0
*/
@SpringBootApplication
@EnableDiscoveryClient // 该注解用于向使用 consul 或者 zookeeper 作为注册中心时注册服务
public class OrderZkMain80 {
public static void main(String[] args) {
SpringApplication.run(OrderZkMain80.class, args);
}
}
package com.ray.springcloud.config;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;
/**
* @Description: 相当于封装了 HttpClient
* @Author Ray
* @Date 2020/10/07 11:40
* @Version 1.0
*/
@Configuration
public class RestTemplateConfig {
@Bean
@LoadBalanced
public RestTemplate getRestTemplate() {
return new RestTemplate();
}
}
package com.ray.springcloud.controller;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
import javax.annotation.Resource;
/**
* @Description:
* @Author Administrator
* @Date 2020/10/11 10:01
* @Version 1.0
*/
@RequestMapping(value = "/consumer")
@RestController
@Slf4j
public class OrderZkController {
// 与 zookeeper 服务器上面的提供者名称一致
public static final String INVOKE_URL = "http://cloud-provider-payment";
@Resource
private RestTemplate restTemplate;
@GetMapping("/payment/zk")
public String paymentInfo() {
String result = restTemplate.getForObject(INVOKE_URL + "/payment/zk", String.class);
return result;
}
}
一、启动项目,查看zookeeper是否注册成功
二、测试接口是否可用