ECS：环境变量设置任务，但不存在于容器

我有一个任务定义，看起来像这样：ECS：环境变量设置任务，但不存在于容器

> aws ecs describe-task-definition --task-definition ruby-on-rails-test 
{ 
    "taskDefinition": { 
     "status": "ACTIVE", 
     "networkMode": "bridge", 
     "family": "ruby-on-rails-test", 
     "placementConstraints": [], 
     "requiresAttributes": [ 
      { 
       "name": "com.amazonaws.ecs.capability.ecr-auth" 
      }, 
      { 
       "name": "com.amazonaws.ecs.capability.docker-remote-api.1.21" 
      } 
     ], 
     "volumes": [ 
      { 
       "host": { 
        "sourcePath": "/opt/cf/rails-app/public/" 
       }, 
       "name": "ruby-on-rails-public-volume" 
      } 
     ], 
     "taskDefinitionArn": "arn:aws:ecs:us-east-1:accountId:task-definition/ruby-on-rails-test:5", 
     "containerDefinitions": [ 
      { 
       "memoryReservation": 1024, 
       "environment": [ 
        { 
         "name": "DATABASE_HOSTNAME", 
         "value": "hostname" 
        }, 
        { 
         "name": "PUMA_WORKERS", 
         "value": "2" 
        }, 
        { 
         "name": "RAILS_ENV", 
         "value": "staging" 
        }, 
        { 
         "name": "DATABASE_NAME", 
         "value": "ruby-on-rails" 
        }, 
        { 
         "name": "DEBIAN_FRONTEND", 
         "value": "noninteractive" 
        }, 
        { 
         "name": "PORT", 
         "value": "8080" 
        }, 
        { 
         "name": "LANG", 
         "value": "en_US.UTF-8" 
        }, 
        { 
         "name": "DATABASE_PASSWORD", 
         "value": "cf" 
        }, 
        { 
         "name": "DATABASE_USER", 
         "value": "cf" 
        }, 
        { 
         "name": "PUMA_MAX_THREADS", 
         "value": "6" 
        } 
       ], 
       "name": "ruby-on-rails-test", 
       "mountPoints": [ 
        { 
         "sourceVolume": "ruby-on-rails-public-volume", 
         "containerPath": "/opt/cf/rails-app/public/" 
        } 
       ], 
       "image": "accountId.dkr.ecr.us-east-1.amazonaws.com/cf/rails:latest", 
       "cpu": 1024, 
       "portMappings": [ 
        { 
         "protocol": "tcp", 
         "containerPort": 8080, 
         "hostPort": 8080 
        } 
       ], 
       "command": [ 
        "puma", 
        "-C", 
        "config/puma.rb" 
       ], 
       "essential": true, 
       "volumesFrom": [] 
      } 
     ], 
     "revision": 5 
    } 
}

当容器启动时，环境变量没有设置。我从ecs容器中运行以下命令，从容器启动失败

[[email protected] docker]# docker run --name 46485594ffc4 accountId.dkr.ecr.us-east-1.amazonaws.com/ cf/rails:latest env 
PATH=/usr/local/bundle/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin 
HOSTNAME=0e0656e4e84c 
RUBY_MAJOR=2.3 
RUBY_VERSION=2.3.4 
RUBY_DOWNLOAD_SHA256=341cd9032e9fd17c452ed8562a8d43f7e45bfe05e411d0d7d627751dd82c578c 
RUBYGEMS_VERSION=2.6.12 
BUNDLER_VERSION=1.15.0 
GEM_HOME=/usr/local/bundle 
BUNDLE_PATH=/usr/local/bundle 
BUNDLE_BIN=/usr/local/bundle/bin 
BUNDLE_SILENCE_ROOT_WARNING=1 
BUNDLE_APP_CONFIG=/usr/local/bundle 
APP_HOME=/opt/cf/rails-app 
HOME=/root

任何想法为什么变量没有被设置？

在此先感谢。

来源

2017-05-24 aeldaly

什么是“46485594ffc4”？ – Robert

当你自己拍下一张图片时，你错过了AWS用来运行容器的漏洞。他设置了env vars，只是在其docker run。

你这样做：

搬运工运行--name 46485594ffc4 accountId.dkr.ecr.us-east-1.amazonaws.com/cf/rails:latest ENV

在那里，你对您配置的任务没有任何关系。你只有你推送的图像。

所以，从停止容器检查环境变量，你应该先找到它：

docker ps -a

与容器ID

然后执行：

docker inspect ID

有你应该看到env vars。

PS：如果你想看到与容器发生什么，检查其日志：docker logs ID

来源

2017-05-24 19:02:16 Robert

谢谢@罗伯特。不，我需要弄清楚为什么当docker检查清楚地显示它们已设置时，我的应用程序没有收到环境变量。 – aeldaly

ECS：环境变量设置任务，但不存在于容器

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