配置中心服务器
- 配置中心服务器,以版本的管理方式对分布式系统提供外部配置支持;
- SpringCloud中采用Spring Cloud Config 进行集成,而想要进行实施更新则需要采用spring cloud bus的方式, 如 Rabbit、Kafka 等。
- 版本管理采用 Git
- 这里采用Kafka,因为本地有开发测试环境
- 服务注册与发现参考
- /bus/refresh 为消息总线带来的刷新方式,可以手动调用
- destination参数:用于刷新指定的应用服务
- e.g. /bus/refresh?destination=feignserver:8084
配置中心服务
创建配置中心服务module
在build.gradle引入:cloud:spring-cloud-config-server、spring-boot-autoconfigure; 因为我们还想可以自动更新所以引入 spring-cloud-starter-bus-kafka,引入spring-boot-starter-actuator、spring-cloud-config-monitor用于监听
build.gradle
apply plugin: 'org.springframework.boot'
dependencyManagement {
imports {
mavenBom "org.springframework.cloud:spring-cloud-dependencies:"+ springCloudVersion
mavenBom "org.springframework.boot:spring-boot-dependencies:"+ springBootVersion
mavenBom "org.springframework.boot:spring-boot-starter:"+ springBootVersion
}
}
dependencies {
compile('org.springframework.cloud:spring-cloud-config-server')
compile('org.springframework.cloud:spring-cloud-starter-eureka')
compile('org.springframework.boot:spring-boot-autoconfigure')
compile('org.springframework.cloud:spring-cloud-starter-bus-kafka')
compile('org.springframework.boot:spring-boot-starter-log4j2')
compile('org.springframework.boot:spring-boot-starter-actuator')
compile('org.springframework.cloud:spring-cloud-config-monitor')
compile('org.apache.logging.log4j:log4j-1.2-api:'+ log4jAPIVersion)
compile('org.xerial.snappy:snappy-java:' + snappyVersion)
testCompile('org.springframework.boot:spring-boot-starter-test')
testCompile group: 'junit', name: 'junit', version: '4.11'
}
configurations {
all*.exclude module: 'spring-boot-starter-logging'
all*.exclude module: 'logback-classic'
all*.exclude module: 'log4j-over-slf4j'
all*.exclude module: 'snappy-java'
}
sourceSets {
main {
resources.srcDirs = ['src/main/resources', 'src/main/java']
resources.includes = ['**/*.xml', '**/*.yml']
}
}
jar {
baseName = 'configserver-bootcwenao'
}
因为引入了spring-cloud-starter-bus-kafka需要排除掉这个组件自带 logback,然后又需要兼容本身的log,所以还需要引入org.apache.logging.log4j:log4j-1.2-api
排除logging
configurations {
all*.exclude module: 'spring-boot-starter-logging'
all*.exclude module: 'logback-classic'
all*.exclude module: 'log4j-over-slf4j'
all*.exclude module: 'snappy-java'
}
在application.yml中配置Git
spring:
cloud:
config:
server:
git:
uri: https://git.oschina.net/youraccount/project/
search-paths: dir
username: xxxxxxxx@xx.com
password: xxxxxx
default-label: master
在application.yml中配置Kafka
spring:
cloud:
stream:
kafka:
binder:
brokers: localhost:9092
zk-nodes: localhost:2181
通过 @EnableConfigServer 启用配置服务
/**
* @author cwenao
* @version $Id ConfigserverBootcwenaoApplication.java, v 0.1 2017-01-12 14:21 cwenao Exp $$
*/
@EnableDiscoveryClient
@SpringBootApplication
@EnableAutoConfiguration
@EnableConfigServer
public class ConfigserverBootcwenaoApplication {
public static void main(String[] args) {
new SpringApplicationBuilder(ConfigserverBootcwenaoApplication.class).web(true).run(args);
}
}
创建Config-Client服务
在build.gradle引入:cloud:spring-cloud-starter-config,同时引入 spring-cloud-starter-bus-kafka
apply plugin: 'org.springframework.boot'
dependencyManagement {
imports {
mavenBom "org.springframework.cloud:spring-cloud-dependencies:"+ springCloudVersion
mavenBom "org.springframework.boot:spring-boot-dependencies:"+ springBootVersion
mavenBom "org.springframework.boot:spring-boot-starter:"+ springBootVersion
}
}
dependencies {
compile('org.springframework.cloud:spring-cloud-starter-config')
compile('org.springframework.cloud:spring-cloud-starter-eureka')
compile('org.springframework.cloud:spring-cloud-netflix-sidecar')
compile('org.springframework.cloud:spring-cloud-starter-bus-kafka')
compile('org.springframework.cloud:spring-cloud-stream')
compile('org.xerial.snappy:snappy-java:' + snappyVersion)
compile ('org.springframework.boot:spring-boot-starter-web')
compile('org.springframework.boot:spring-boot-starter-log4j2')
compile('org.apache.logging.log4j:log4j-1.2-api:'+ log4jAPIVersion)
testCompile('org.springframework.boot:spring-boot-starter-test')
testCompile group: 'junit', name: 'junit', version: '4.11'
}
configurations {
all*.exclude module: 'spring-boot-starter-logging'
all*.exclude module: 'logback-classic'
all*.exclude module: 'log4j-over-slf4j'
all*.exclude module: 'snappy-java'
}
sourceSets {
main {
resources.srcDirs = ['src/main/resources', 'src/main/java']
resources.includes = ['**/*.xml', '**/*.yml']
}
}
jar {
baseName = 'apigateway-bootcwenao'
}
配置 bootstarp.yml 中 discovery开启访问配置服务中心
server:
port: 10002
sidecar:
port: 20001
#configServer
spring:
application:
name: apigateway
profiles:
active: dev
cloud:
config:
uri: http://localhost:8888/
discovery:
enabled: true
stream:
kafka:
binder:
brokers: localhost:9092
zk-nodes: localhost:2181
注解 @EnableDiscoveryClient
@SpringCloudApplication
@EnableDiscoveryClient
@EnableSidecar
public class ApiGatewayBootcwenaoApplication {
public static void main(String[] args) {
SpringApplication.run(ApiGatewayBootcwenaoApplication.class, args);
}
}
Git 中文件名字 apigateway-dev.yml
内容为原先在本地的配置
启动顺序
服务注册中心 --> 配置中心 --> 其他服务
注册中心可以看到配置中心服务于想依赖的服务都已经启动注册成功
手动调用刷新
- 修改任意的配置文件
- 在postman中调用 /bus/refresh ,post方式调用
自动更新配置/webhook
webhook配置
- 在application.yml中加入encrypt.key
- 此key与github上的Secret,gitoschina上的密码对应
- **webhook url: ** http://cwenao.eicp.net/configserver/bus/refresh
application.yml
encrypt:
key: cwenao
git仓库 webhook配置
Github webhook webhook入口 url与 secret 配置完成可能的错误
- zookeeper没有读取到
- kafka没启动
- log4j2与其他冲突
- git uri地址错误,需要最后加“/”
代码
代码请移步 Github参考地址
如有疑问请加公众号(K171),如果觉得对您有帮助请 github start
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