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Packer 入門

インストール

$ brew install packer $ packer -v 1.2.2

簡単なマシンイメージの作成

  • ひとまず動くものを作っていく
  • 以下のような json を適当なディレクトリ下に example.json という名前でおく
{ "variables": { "aws_access_key": "", "aws_secret_key": "" }, "builders": [ { "type": "amazon-ebs", "access_key": "{{user `aws_access_key`}}", "secret_key": "{{user `aws_secret_key`}}", "region": "us-east-1", "source_ami_filter": { "filters": { "virtualization-type": "hvm", "name": "ubuntu/images/*ubuntu-xenial-16.04-amd64-server-*", "root-device-type": "ebs" }, "owners": ["099720109477"], "most_recent": true }, "instance_type": "t2.micro", "ssh_username": "ubuntu", "ami_name": "packer-example {{timestamp}}" } ] }

テンプレートの validate と build

  • example.json がマシンイメージを表すテンプレート
  • 記述したテンプレートが不正なフォーマットでないかどうかは packer validate でチェックできる
  • packer build でビルドできる
  • AWS_PROFILE=53ningen packer build とすれば profile を指定できる
$ AWS_PROFILE=53ningen packer build ./example.json amazon-ebs output will be in this color. ==> amazon-ebs: Prevalidating AMI Name: packer-example 1524579611 amazon-ebs: Found Image ID: ami-6dfe5010 ==> amazon-ebs: Creating temporary keypair: packer_5adf3d1b-b3f9-511d-e525-69a91252569b ==> amazon-ebs: Creating temporary security group for this instance: packer_5adf3d26-2760-38e1-ea30-eb13cc87dc0c ==> amazon-ebs: Authorizing access to port 22 from 0.0.0.0/0 in the temporary security group... ==> amazon-ebs: Launching a source AWS instance... ==> amazon-ebs: Adding tags to source instance amazon-ebs: Adding tag: "Name": "Packer Builder" amazon-ebs: Instance ID: i-01015a96015c7e859 ==> amazon-ebs: Waiting for instance (i-01015a96015c7e859) to become ready... ==> amazon-ebs: Waiting for SSH to become available... ==> amazon-ebs: Connected to SSH! ==> amazon-ebs: Stopping the source instance... amazon-ebs: Stopping instance, attempt 1 ==> amazon-ebs: Waiting for the instance to stop... ==> amazon-ebs: Creating the AMI: packer-example 1524579611 amazon-ebs: AMI: ami-8a9327f5 ==> amazon-ebs: Waiting for AMI to become ready... ==> amazon-ebs: Terminating the source AWS instance... ==> amazon-ebs: Cleaning up any extra volumes... ==> amazon-ebs: No volumes to clean up, skipping ==> amazon-ebs: Deleting temporary security group... ==> amazon-ebs: Deleting temporary keypair... Build 'amazon-ebs' finished. ==> Builds finished. The artifacts of successful builds are: --> amazon-ebs: AMIs were created: us-east-1: ami-8a9327f5 $ # あるいは $ export AWS_ACCESS_KEY_ID="anaccesskey" $ export AWS_SECRET_ACCESS_KEY="asecretkey" $ export AWS_DEFAULT_REGION="us-west-2" $ packer build packer.json

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