kubernetes yaml中的变量原因:无法解析值"${ACTUATOR_PASSWORD}“中的占位符”“ACTUATOR_PASSWORD”“

Question

当我从IntelliJ运行我的应用程序时，我得到了一个warning / error，尽管应用程序构建良好并通过了所有测试，这是我应该忽略的东西，或者这个问题可以被修复吗？

Kubernetes secret用于创建随机密码，因此我为该特定变量设置了一个占位符。

2019-02-26 19:45:29.600  INFO 38918 --- [           main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2019-02-26 19:45:29.684  WARN 38918 --- [           main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'actuatorSecurity': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'ACTUATOR_PASSWORD' in value "${ACTUATOR_PASSWORD}"
2019-02-26 19:45:29.685  INFO 38918 --- [           main] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default'
2019-02-26 19:45:29.685  INFO 38918 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Shutdown initiated...
2019-02-26 19:45:29.707  INFO 38918 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Shutdown completed.
2019-02-26 19:45:29.713  INFO 38918 --- [           main] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]

qronicle-deployment.yaml

apiVersion: v1
kind: Secret
metadata:
  name: actuator
  namespace: {{ .Release.Namespace }}
type: Opaque
data:
  actuator-password: {{ randAlphaNum 10 | b64enc | quote }}
....
- name: ACTUATOR_PASSWORD
  valueFrom:
    secretKeyRef:
      name: actuator
      key: actuator-password

application.properties

# spring boot actuator access control
management.endpoints.web.exposure.include=*
security.user.actuator-username=admin
security.user.actuator-password=${ACTUATOR_PASSWORD}

ACTUATOR_PASSWORD在此处使用

@Configuration
@EnableWebSecurity
class ActuatorSecurity : WebSecurityConfigurerAdapter() {
    @Value("\${security.user.actuator-username}")
    private val actuatorUsername: String? = null

    @Value("\${security.user.actuator-password}")
    private val actuatorPassword: String? = null

    ....
}

Answer 1

通常，出于机密考虑，您会将其挂载到部署yaml之外。

在这里，您可以在将要运行节点的k8上下文中运行kubectl create secret generic <secret_name> --from-literal <secret_key> ='<password>'。

这将在那里创建一个秘密，上面的部署yaml将把它映射到一个环境变量。

Answer 2

这在application.properties文件中起到了作用

security.user.password=${ACTUATOR_PASSWORD:admin123}

如果未提供环境变量，则将使用admin123