Question

k8s的新手。

通过https://cloud.spring.io/spring-cloud-static/spring-cloud-kubernetes/2.1.0.RC1/multi/multi__kubernetes_propertysource_implementations.html

我在配置映射中有多个配置文件，希望我的应用基于spring.profiles.active来获取属性。

案例1：-

我的ConfigMap看起来像

kind: ConfigMap
apiVersion: v1
metadata:
  name: example-configmap-overriding-new-02
data:
  application.properties: |-
    globalkey = global key value
    TeamName = Team Name value
    Purpose = Purpose value
    RootFile = Root file value
    Company = company value
    Place = Place value
    Country = Country value
    ---
    spring.profiles = qa
    globalkey = global key qa value
    TeamName = Team Name qa value
    Purpose = Purpose qa value
    RootFile = Root file qa value
    ---
    spring.profiles = prod
    globalkey = global key prod value
    Company = company prod value
    Place = Place prod value
    Country = Country prod value

我的部署文件看起来像

apiVersion: apps/v1
kind: Deployment
metadata: 
  name: demo-configmapsingleprofile
spec:  
  selector:
    matchLabels:
      app: demo-configmapsingleprofile
  replicas: 1
  template: 
    metadata:
      labels:
        app: demo-configmapsingleprofile
    spec:
      serviceAccountName: config-reader
      containers:
      - name: demo-configmapsingleprofile
        image: image name
        ports:
        - containerPort: 8080
        envFrom:
          - configMapRef:
              name: example-configmap-overriding-new-02
        securityContext:
            privileged: false

Spring Boot中的我的配置文件看起来像

@Configuration
public class ConfigConsumerConfig {

@Value(value = "${globalkey}")
private String globalkey;

@Value(value = "${TeamName}")
private String teamName;

@Value(value = "${Purpose}")
private String purpose;

@Value("${RootFile}")
private String rootFile;

@Value("${Company}")
private String company;

@Value("${Place}")
private String place;

@Value("${Country}")
private String country;

//With getters and setters
}

我的application.properties看起来像

spring.profiles.active=prod
spring.application.name=example-configmap-overriding-new-02
spring.cloud.kubernetes.config.name=example-configmap-overriding-new-02
spring.cloud.kubernetes.config.namespace=default
spring.cloud.kubernetes.config.sources[0].name=example-configmap-overriding-new-02
spring.cloud.kubernetes.config.enabled=true

应用运行正常，并从配置映射中获取了值。但这是从错误的配置文件中挑选的。从“质量检查”配置文件中提取了一些值。

我得到的最终结果是：-

{"globalkey":"global key prod value","teamName":"Team Name qa value","purpose":"Purpose qa value","rootFile":"Root file qa value","company":"company prod value","place":"Place prod value","country":"Country prod value"}

案例2：-

但是，当我将配置映射与yaml一起使用时，如下所示，

kind: ConfigMap
apiVersion: v1
metadata:
  name: example-configmap-overriding-new-02
data:
  application.yml: |-    
    globalkey : global key value
    TeamName : Team Name value
    Purpose : Purpose value
    RootFile : Root file value
    Company : company value
    Place : Place value
    Country : Country value
    ---
    spring:
      profiles: qa
    globalkey : global key qa value
    TeamName : Team Name qa value
    Purpose : Purpose qa value
    RootFile : Root file qa value
    ---
    spring:
      profiles: prod
    globalkey : global key prod value
    Company : company prod value
    Place : Place prod value
    Country : Country prod value

我得到了预期的结果。它按预期从产品配置文件中选取。

{"globalkey":"global key prod value","teamName":"Team Name value","purpose":"Purpose value","rootFile":"Root file value","company":"company prod value","place":"Place prod value","country":"Country prod value"}

第2种情况按预期运行，但第一种情况未达到预期效果。

我对配置映射有任何错误/误解吗？可以在这里提出一些建议吗？

谢谢。

Answer 1

鉴于尚无其他答案，请让我尝试帮助您。

YAML文件中的---分隔符可分隔多个YAML文档。在属性文件中不是这样。不确定如何使用这些---来加载属性文件，但是现在不知道它的结构方式会导致重复的密钥，其中一个密钥会覆盖之前的相同密钥。

使用属性文件时，创建多个键/值对-每个配置文件一个。像这样：

kind: ConfigMap
apiVersion: v1
metadata:
  name: example-configmap-overriding-new-02
data:
  application.properties: |-
    globalkey = global key value
    TeamName = Team Name value
    Purpose = Purpose value
    RootFile = Root file value
    Company = company value
    Place = Place value
    Country = Country value
  application-qa.properties: |-
    spring.profiles = qa
    globalkey = global key qa value
    TeamName = Team Name qa value
    Purpose = Purpose qa value
    RootFile = Root file qa value
  application-prod.properties: |-
    spring.profiles = prod
    globalkey = global key prod value
    Company = company prod value
    Place = Place prod value
    Country = Country prod value

它们将在正在运行的容器中“实现”为单个文件，位于安装位置。

Answer 2

根据文档here

另一种选择是为每个配置文件创建一个不同的配置映射，Spring Boot会根据活动的配置文件自动获取它。

您还可以考虑以下方法：

RuntimeContext

ConfigMap无法与application.properties配合使用，但与application.yml配合使用

2 个答案: