RancherOS EC2 Metadata    source   docker 

Intended to use with Autoscaling.

• Adds AWS EC2 metadata to RancherOS environment
• Adds instance tags to Docker labels
• Adds instance tags to RancherOS environment according to options

How to use

#cloud-config
rancher:
  services:
    aws-metadata:
      image: deadroot/rancheros-ec2-metadata
      command: -m -t 'docker.' -l 'com.environment:ENVIRONMENT'
      privileged: true
      labels:
        io.rancher.os.after: network
        io.rancher.os.scope: system
        io.rancher.os.reloadconfig: 'true'
        io.rancher.os.createonly: 'false'
      volumes:
        - /usr/bin/ros:/bin/ros:ro
        - /var/lib/rancher/conf:/var/lib/rancher/conf:rw
    console:
      labels:
        io.rancher.os.after: aws-metadata

Please pay attention to the console service config. It redefines console to run after aws-metadata - this gurarntees that all metadata will be loaded befire Docker starts.

Options:

• -m - put AWS metadata to the Rancher environment vars. Metadata supported:
  • AWS_AVAILABILITY_ZONE
  • AWS_DEFAULT_REGION
  • AWS_IAM_ROLE
  • AWS_ACCESS_KEY_ID
  • AWS_SECRET_ACCESS_KEY
  • AWS_SECURITY_TOKEN
  • AWS_INSTANCE_ID
  • AWS_AMI_ID
  • AWS_AMI_LAUNCH_INDEX
  • AWS_AMI_MANIFEST_PATH
  • AWS_ANCESTOR_AMI_IDS
  • AWS_HOSTNAME
  • AWS_LOCAL_HOSTNAME
  • AWS_INSTANCE_ACTION
  • AWS_INSTANCE_TYPE
  • AWS_LOCAL_IPV4
  • AWS_PUBLIC_IPV4
  • AWS_SECURITY_GROUPS
• -t [prefix] - load EC2 instance tags starting with prefix and add them as labels to docker daemon options
• -l label:variablename - add variablename variable ro RancherOS environment that contains value of label tag.