Cloud整合Zookeeper代替Eureka

news2024/11/6 3:06:22

微服务间通信重构与服务治理笔记-CSDN博客

Zookeeper是一个分布式协调工具,可以实现注册中心功能

安装Zookeeper

随便就用最新版本吧

进入Zookeeper 包目录

cd /usr/local/develop/

解压

tar -zxvf apache-zookeeper-3.9.1-bin.tar.gz -C /usr/local/develop

进入配置文件

cd /usr/local/develop/apache-zookeeper-3.9.1-bin/conf

复制文件

cp zoo_sample.cfg zoo.cfg

编辑文件

vim zoo.cfg

mkdir /usr/local/develop/apache-zookeeper-3.9.1-bin/data 这个没必要会自动创建

cd /usr/local/develop/apache-zookeeper-3.9.1-bin/bin

启动Zookeeper

./zkServer.sh start

安装JDK

解压

tar -zxvf /usr/local/develop/jdk-8u191-linux-x64.tar.gz -C /usr/local/develop

配置JAVA_HOME

export JAVA_HOME=/usr/local/develop/jdk1.8.0_191

export PATH=$JAVA_HOME/bin:$PATH

export CLASSPATH=.:$JAVA_HOME/lib

让环境变量生效

source /etc/profile

java -version 查看jdk版本至此JDK安装完成

which java 查看调用的是安装在哪里的java

进入Zookeeper启动目录

cd /usr/local/develop/apache-zookeeper-3.9.1-bin/bin

启动

./zkServer.sh start

停止

./zkServer.sh stop

配置Zookeeper为系统服务

vim /etc/systemd/system/zookeeper.service

[Unit]
Description=Apache ZooKeeper server
After=network.target

[Service]
Type=forking
ExecStart=/usr/local/develop/apache-zookeeper-3.9.1-bin/bin/zkServer.sh start
ExecStop=/usr/local/develop/apache-zookeeper-3.9.1-bin/bin/zkServer.sh stop
User=root
Group=root
Restart=on-failure
Environment="JAVA_HOME=/usr/local/develop/jdk1.8.0_191"

[Install]
WantedBy=multi-user.target

是配置生效

systemctl daemon-reload

开机自启看自己实际需要

systemctl enable zookeeper.service

systemctl start zookeeper.service 启动
systemctl stop zookeeper.service 停止
systemctl restart zookeeper.service 重启
systemctl status zookeeper.service 查看状态

admin.serverPort=8888指定了ZooKeeper的管理服务器端口。这个管理服务器提供了一个简单的HTTP接口，用于获取ZooKeeper服务的状态和性能指标等信息。通过访问这个端口，你可以获取到ZooKeeper实例的各种管理信息，比如运行状态、连接数、节点数量等。

默认情况下，ZooKeeper的管理界面并不提供一个全面的Web界面来浏览这些信息，而是提供了一个简单的HTTP服务，通过发送HTTP请求到这个端口，可以获取到JSON格式的状态信息。

IP:8888/commands/stat

关闭Zookeeper服务

systemctl stop zookeeper.service

systemctl start zookeeper.service

Docker安装Zookeeper

docker run -d --name zookeeper --privileged=true -p 2181:2181 -v /mydata/zookeeper/data:/data -v /mydata/zookeeper/conf:/conf -v /mydata/zookeeper/logs:/datalog zookeeper:3.5.7

后面补

创建支付模块(生产者)

重新构建支付模块

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</artifactId>
        <groupId>org.example</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>cloud-provider-payment8084</artifactId>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.example</groupId>
            <artifactId>cloud-api-commons</artifactId>
            <version>${project.version}</version>
        </dependency>
        
        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-zookeeper-discovery -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-devtools -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-test -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>


    </dependencies>

</project>

application.yml

server:
  port: 8084

spring:
  application:
    name: cloud-provider-payment
  cloud:
    zookeeper:
      connect-string: xxx.xx.xxx.x:2181

启动类

控制器

package com.exempla.pay01.controller;

import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.UUID;

/**
 * @author hrui
 * @date 2024/3/2 6:07
 */
@RestController
@Slf4j
@RequestMapping("/payment")
public class PaymentController {

    @Value("${server.port}")
    private String serverPort;

    @GetMapping(value = "/zk")
    public String paymentzk(){
        return "springcloud with zookeeper:"+serverPort+"\t"+ UUID.randomUUID().toString();
    }
}

启动8084 注册进Zookeeper lombok找不到加个版本

记得Zookeeper服务器开通安全组

有可能版本冲突解决办法

cd /usr/local/develop/apache-zookeeper-3.9.1-bin/bin

./zkCli.sh

ls /

ls /services

ls /services/cloud-provider-payment

ls /services/cloud-provider-payment/04bbfd46-50e0-462a-bd22-b8083cc445cf

get /services/cloud-provider-payment/04bbfd46-50e0-462a-bd22-b8083cc445cf

上面这个JSON串就是微服务注册相关的信息

quit

也可以

IP:8888/commands/stat 看下

访问接口可以

localhost:8084/payment/zkhttp://localhost:8084/payment/zk

创建订单模块(消费者)

pom.xml


    <dependencies>

        <dependency>
            <groupId>com.atguigu.springcloud</groupId>
            <artifactId>cloud-api-commons</artifactId>
            <version>${project.version}</version>
        </dependency>


        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-zookeeper-discovery -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-devtools -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-test -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>


    </dependencies>

启动类

application.yml

server:
  port: 80

spring:
  application:
    name: cloud-consumer-order
  cloud:
    zookeeper:
      connect-string: xxx.xx.xx.x:2181

配置RestTemplate和负载均衡

控制器

启动服务

localhost/consumer/payment/zk

关于@EnableDiscoveryClient 注解早期版本确实生产者和消费者启动类要加后来就不需要了

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