Question

我正在尝试为docker机密中通常声明的MySQL容器和spring boot应用程序的数据库密码设置环境变量。

echo "db_secured_password" | docker secret create secret -

这是配置文件：

spring boot应用程序的-> application.yml

db:
  name: my-db
  host: localhost
  port: 3306
  username: root
  password: /run/secrets/db-root-password
spring:
  application:
    name: core-backend
  datasource:
    url: jdbc:mysql://${db.host}:${db.port}/${db.name}
    username: ${db.username}
    password: ${db.password}

用于docker swarm模式下的docker堆栈-> docker-compose.yml

version: '3.1'

services: 

  mysql-db:
    container_name: mysql-db
    image: mysql:8.0.12
    deploy:
      restart_policy:
        condition: on-failure
    volumes:
      - ./data/mysql:/var/lib/mysql
      - ./conf/mysql/my.cnf:/etc/mysql/conf.d/my.cnf
    environment:
      - MYSQL_ROOT_PASSWORD=/run/secrets/db-root-password
      - MYSQL_DATABASE=my_db
    ports: 
      - "3306:3306"
    secrets: 
      - db-root-password

  spring-boot-app:
    container_name: spring-boot-app
    image: spring-boot-app:local
    environment:
      - DB_PASSWORD=/run/secrets/db-root-password
# Also tried adding with the file as property name
#     - DB_PASSWORD_FILE=/run/secrets/db-root-password
    ports:
      - "8080:8080"
    environment:
      HOST_NAME: localhost
    secrets: 
      - db-root-password
    depends_on:
      - mysql-db

secrets:
  db-root-password:
    external: true

我使用以下命令运行docker堆栈：

docker stack deploy --with-auth-registry -c docker-compose.yml test-stack

我无法确切获得db-root-password属性的值在春季启动应用程序。当我检查db-root-password的值时的值为/run/secrets/db-root-password。

是否缺少某些内容？如果要以其他方式覆盖环境变量的值？

Answer 1

我们通过使用“ printf”而不是“ echo”解决了相同的问题，echo的问题是它将在docker secret中留下换行符。您可以参考docker secret create => https://docs.docker.com/engine/reference/commandline/secret_create/

中的示例

我还有一个示例，可以将docker机密直接加载到spring属性中，例如“ spring.datasource.password” => https://github.com/kwonghung-YIP/spring-boot-docker-secret

Answer 2

我认为您需要从机密文件中装入密码，请在https://docs.docker.com/engine/swarm/secrets/#build-support-for-docker-secrets-into-your-images此处查看示例“在撰写中使用机密”

Spring Boot应用程序的docker secret在docker swarm模式/ run / secrets下不起作用

2 个答案: