Spring Cloud 之服务注册中心高可用

服务注册中心高可用

服务注册中心 eureka-server 高可用实施

版本

Spring Boot 版本

# Spring Boot 版本:

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.9.RELEASE</version>
<relativePath/>
</parent>

Spring Cloud 版本

# Spring Cloud 版本:

<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Edgware.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>

主机

修改hosts 模拟两台主机

C:\Windows\System32\drivers\etc\hosts

# Copyright (c) 1993-1999 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
127.0.0.1 localhost
127.0.0.1 www.galsang.org
127.0.0.1 www.galsang.io

服务注册中心

一台机器模拟出的两台主机规划如下：

项目名称	spring.application.name	eureka.client.serviceUrl.defaultZone	eureka.instance.hostname	端口
spring-cloud-server	spring-cloud-server-discovery-eureka-ha	http://www.galsang.io:8999/eureka/	www.galsang.org	9000
spring-cloud-server-available	spring-cloud-server-discovery-eureka-ha	http://www.galsang.org:9000/eureka/	www.galsang.io	8999

spring-cloud-server

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"> <modelVersion>4.0.0</modelVersion>

<groupId>org.galsang.cloud</groupId>
<artifactId>spring-cloud-server</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>

<name>spring-cloud-server</name>
<description>注册中心</description>

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.9.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>

<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>

<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Edgware.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka-server</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>

<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>

</project>

application-pro.yml

## 生产环境 启用服务注册中心高可用
spring:
profiles: pro
cloud:
inetutils:
preferred-networks:
- 192.168
server:
port: 9000
context-path: /
# 服务治理中心实例
eureka:
instance:
hostname: www.galsang.org
leaseRenewalIntervalInSeconds: 1
leaseExpirationDurationInSeconds: 2
# 是否作为服务进行注册，在此仅作为服务治理中心，不作为服务进行注册
client:
register-with-eureka: true
fetch-registry: true
serviceUrl.defaultZone: http://www.galsang.io:8999/eureka/ # 关闭自我保护
server:
enableSelfPreservation: false

spring-cloud-server-available

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"> <modelVersion>4.0.0</modelVersion>

<groupId>org.galsang.cloud</groupId>
<artifactId>spring-cloud-server-available</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>

<name>spring-cloud-server-available</name>
<description>注册中心</description>

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.9.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>

<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>

<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Edgware.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-s
b17a
tarter-eureka-server</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>

<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>

</project>

application-pro.yml

## 生产环境 启用服务注册中心高可用
spring:
profiles: pro
cloud:
inetutils:
preferred-networks:
- 192.168
server:
port: 8999
context-path: /
# 服务治理中心实例
eureka:
instance:
hostname: www.galsang.io
leaseRenewalIntervalInSeconds: 1
leaseExpirationDurationInSeconds: 2
# 是否作为服务进行注册，在此仅作为服务治理中心，不作为服务进行注册
client:
register-with-eureka: true
fetch-registry: true
serviceUrl.defaultZone: http://www.galsang.org:9000/eureka/ # 关闭自我保护
server:
enableSelfPreservation: false

启动项目

浏览器打开

http://www.galsang.org:9000

或

http://www.galsang.io:8999



说明 服务注册中心 eureka-server 高可用已经成功

源码请移步： https://gitee.com/vimx86/SpringCloud-Learning

参考资料

Spring基础：快速入门spring cloud（2）：服务发现之eureka

SpringCloud系列(2)—Netfilx-Eureka