[Posts] springboot + k8s + discarded springcloud.eureka springboot + k8s + discarded springcloud.eureka

springboot+k8s+抛弃springcloud.eureka

 

https://www.cnblogs.com/lori/p/12048743.html

 

springboot development of micro-services framework generally used springcloud family bucket, and the entire project is containerized, orchestrated by k8s, and k8s themselves have a service discovery mechanism, so we can abandon springcloud in the eureka, and direct use k8s own service .
# Add components

<dependency>
    <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-ribbon</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-kubernetes-ribbon</artifactId> <version>0.3.0.RELEASE</version> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-kubernetes</artifactId> <version>0.3.0.RELEASE</version> </dependency>

important point

1. Application.name the same k8s service name, that feign in the name of the service
2. You must be open @EnableDiscoveryClient comment
3. springcloud configuration center needs and projects in a namespace that k8s of clusterIp not cross namespace, if multiple namespace need nodeport mode
4. When using feign, its services also need to be under the same namespace

spring:
 application:
   name: hello-world-service
 cloud:  config:  uri: http://config-server-service #集群内部的端口，需要是一个namespace里的，目前配置中心的端口为80  fail-fast: true 

# Add k8s in user permissions
by default, error k8s service call will appear in the user's permission Message: Forbidden!Configured service account doesn't have access.then you need to add permissions for the account role k8s

kubectl create clusterrolebinding permissive-binding \
  --clusterrole=cluster-admin \
  --user=admin \
  --user=kubelet \
  --group=system:serviceaccounts

springboot development of micro-services framework generally used springcloud family bucket, and the entire project is containerized, orchestrated by k8s, and k8s themselves have a service discovery mechanism, so we can abandon springcloud in the eureka, and direct use k8s own service .
# Add components

<dependency>
    <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-ribbon</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-kubernetes-ribbon</artifactId> <version>0.3.0.RELEASE</version> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-kubernetes</artifactId> <version>0.3.0.RELEASE</version> </dependency>

important point

1. Application.name the same k8s service name, that feign in the name of the service
2. You must be open @EnableDiscoveryClient comment
3. springcloud configuration center needs and projects in a namespace that k8s of clusterIp not cross namespace, if multiple namespace need nodeport mode
4. When using feign, its services also need to be under the same namespace

spring:
 application:
   name: hello-world-service
 cloud:  config:  uri: http://config-server-service #集群内部的端口，需要是一个namespace里的，目前配置中心的端口为80  fail-fast: true 

# Add k8s in user permissions
by default, error k8s service call will appear in the user's permission Message: Forbidden!Configured service account doesn't have access.then you need to add permissions for the account role k8s

kubectl create clusterrolebinding permissive-binding \
  --clusterrole=cluster-admin \
  --user=admin \
  --user=kubelet \
  --group=system:serviceaccounts