Zookeeper

配置虚拟机和zookeeper

1. 虚拟机终端输入ifconfig查看 ens33 下的端口号

2. 查看主机与虚拟机之间通信是否畅通

   0. 虚拟机端口号：ifconfig查看 ens33 下的端口号
   1. 主机端口号：网络连接下的 VMnet8 的端口号
   2. 使用虚拟机ping主机，使用主机ping虚拟机确保都可以ping通

3. 新建项目

   0. pom

 <dependency>
     <groupId>org.springframework.cloud</groupId>
     <artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
 </dependency>

4. 解压zookeeper #tar -zxvf zookeeper-3.4.10.tar.gz
5. 启动 zookeeper 注意此时应该修改conf里的zoo_sample.cfg名字为zoo.cfg [root@localhost ~]# cd /usr/local/zookeeper/zookeeper-3.4.14/bin [root@localhost bin]# ./zkServer.sh start
6. 启用端口 [root@localhost bin]# ./zkCli.sh Connecting to localhost:2181

新建项目

pom文件 注意：

1. 排除zookeeper-discovery中自带的 zookeeper，同时引入与linux相同版本的 zookeeper
2. 排除引入 zookeeper 的日志，因为日志会会冲突

 <dependencies>
   <!--引入自己的公共api-->
   <dependency>
       <groupId>com.wxh.springcloud</groupId>
       <artifactId>cloud-api-commons</artifactId>
       <version>${project.version}</version>
   </dependency>
   <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-web</artifactId>
   </dependency>
   <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-actuator</artifactId>
   </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>
   </dependency>
   <dependency>
       <groupId>org.springframework.cloud</groupId>
       <artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
       <!-- 排除自身的zookeeper        -->
       <exclusions>
           <exclusion>
               <groupId>org.apache.zookeeper</groupId>
               <artifactId>zookeeper</artifactId>
           </exclusion>
       </exclusions>
   </dependency>
   <!-- 添加zookeeper,与linux上的版本一致     -->
   <dependency>
       <groupId>org.apache.zookeeper</groupId>
       <artifactId>zookeeper</artifactId>
       <version>3.4.14</version>
       <exclusions>
           <exclusion>
               <groupId>log4j</groupId>
               <artifactId>log4j</artifactId>
           </exclusion>
           <exclusion>
               <groupId>org.slf4j</groupId>
               <artifactId>slf4j-log4j12</artifactId>
           </exclusion>
       </exclusions>
   </dependency>
 </dependencies>

yml 文件

 server:
   port: 8004
 ​
 spring:
   application:
     name: cloud-provider-payment
   cloud:
     zookeeper:
       # ip地址为linux中的网络接口，2181为zookeeper的默认端口
       connect-string: 192.168.150.66:2181

linux测试

 [zk: localhost:2181(CONNECTED) 3] ls /services
 [cloud-provider-payment]

能看到服务名即为配置成功

测试2

1. http://localhost:8004/payment/zk 可以看到信息
2. linux

 # 获取服务名
 [zk: localhost:2181(CONNECTED) 0] ls /services
 [cloud-provider-payment]
 # 获取流水号
 [zk: localhost:2181(CONNECTED) 1] ls /services/cloud-provider-payment
 [efc76371-522d-4d5d-8f56-f8fe4deb7a47]
 # 获取详细信息
 [zk: localhost:2181(CONNECTED) 2] get /services/cloud-provider-payment/efc76371-522d-4d5d-8f56-f8fe4deb7a47
 {"name":"cloud-provider-payment","id":"efc76371-522d-4d5d-8f56-f8fe4deb7a47","address":"WINDOWS-N0GUAG7","port":8004,"sslPort":null,"payload":{"@class":"org.springframework.cloud.zookeeper.discovery.ZookeeperInstance","id":"application-1","name":"cloud-provider-payment","metadata":{}},"registrationTimeUTC":1590232919360,"serviceType":"DYNAMIC","uriSpec":{"parts":[{"value":"scheme","variable":true},{"value":"://","variable":false},{"value":"address","variable":true},{"value":":","variable":false},{"value":"port","variable":true}]}}

服务节点是临时还是持久

关闭8004后在linux终端中,一段时间后失去连接

 [zk: localhost:2181(CONNECTED) 18] ls /services/cloud-provider-payment
 [efc76371-522d-4d5d-8f56-f8fe4deb7a47]
 [zk: localhost:2181(CONNECTED) 19] ls /services/cloud-provider-payment
 [efc76371-522d-4d5d-8f56-f8fe4deb7a47]
 [zk: localhost:2181(CONNECTED) 20] ls /services/cloud-provider-payment
 [efc76371-522d-4d5d-8f56-f8fe4deb7a47]
 [zk: localhost:2181(CONNECTED) 21] ls /services/cloud-provider-payment
 []
 [zk: localhost:2181(CONNECTED) 22]

再开启8004，再次查看流水号可以发现流水号跟之前的不一样 ，所以服务节点是临时的，在关闭服务后完全删除。

订单服务入住zookeeper

1. 新建订单 moudle
2. 该pom
3. 建yml

 server:
   port: 80
 spring:
   application:
     name: cloud-consumerzk-order80
   cloud:
     zookeeper:
       connect-string: 192.168.150.66:2181

4. 写主类
5. 配置类生成 RestTemplate
6. Controller 调用 8004
7. linux 输入，查看节点是否注册上

 [zk: localhost:2181(CONNECTED) 1] ls /services
 [cloud-provider-payment, cloud-consumerzk-order80]

8. 网址登陆查看 http://localhost:8004/payment/zk http://localhost/consumer/payment/zk

存在问题

zookeeper集群?????????