Ribbon实现Cloud负载均衡

安装Zookeeper要先安装JDK环境

解压

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

配置JAVA_HOME

vim /etc/profile

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

做Zookeeper做服务治理(安装Zookeeper)

Apache ZooKeeperhttps://zookeeper.apache.org/

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

现在可以进入bin目录直接启动

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

启动Zookeeper

./zkServer.sh start

如果需要配置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

搭建Cloud项目

创建父项目,只做依赖版本管理

pom.xml

 <!-- 统一管理jar包版本 -->
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <junit.version>4.12</junit.version>
        <log4j.version>1.2.17</log4j.version>
        <lombok.version>1.16.18</lombok.version>
        <mysql.version>5.1.47</mysql.version>
        <druid.version>1.1.16</druid.version>
        <mybatis.spring.boot.version>1.3.0</mybatis.spring.boot.version>
    </properties>

    <!-- 子模块继承之后，提供作用：锁定版本+子modlue不用写groupId和version  -->
    <dependencyManagement>
        <dependencies>
            <!--spring boot 2.2.2-->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>2.2.2.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!--spring cloud Hoxton.SR1-->
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Hoxton.SR1</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!--spring cloud alibaba 2.1.0.RELEASE-->
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>2.1.0.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>${mysql.version}</version>
            </dependency>
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>${druid.version}</version>
            </dependency>
            <dependency>
                <groupId>org.mybatis.spring.boot</groupId>
                <artifactId>mybatis-spring-boot-starter</artifactId>
                <version>${mybatis.spring.boot.version}</version>
            </dependency>
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>${junit.version}</version>
            </dependency>
            <dependency>
                <groupId>log4j</groupId>
                <artifactId>log4j</artifactId>
                <version>${log4j.version}</version>
            </dependency>
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>${lombok.version}</version>
                <optional>true</optional>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>2.2.2.RELEASE</version>
                <configuration>
                    <fork>true</fork>
                    <addResources>true</addResources>
                </configuration>
            </plugin>
        </plugins>
    </build>

生产者模块

pom.xml

 <dependencies>


        <!-- 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.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>

application.yml

server:
  port: 8081

spring:
  application:
    name: cloud-provider-payment
  cloud:
    zookeeper:
      connect-string: 222.22.22.2:2181

启动类

业务类

按相同套路再创建个8082

消费者模块

依赖

 <dependencies>

        <!-- 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.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