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Project Description

container-transform

container-transform is a small utility to transform various docker container formats to one another.

Currently, container-transform can parse and convert:

  • Kubernetes Pod specs
  • ECS task definitions
  • Docker-compose configuration files
  • Marathon Application Definitions or Groups of Applications
  • Chronos Task Definitions

and it can output to:

  • Systemd unit files

Examples

Compose to Kubernetes

$ cat docker-compose.yaml
version: '2'
services:
  etcd:
    cpu_shares: 102.4
    entrypoint: /usr/local/bin/etcd -data-dir /var/etcd/data -listen-client-urls http://127.0.0.1:2379,http://127.0.0.1:4001
      -advertise-client-urls http://127.0.0.1:2379,http://127.0.0.1:4001 -initial-cluster-token
      skydns-etcd
    image: gcr.io/google_containers/etcd-amd64:2.2.1
    mem_limit: 524288000b
  healthz:
    command: -cmd=nslookup kubernetes.default.svc.cluster.local 127.0.0.1 >/dev/null
      -port=8080
    cpu_shares: 10.24
    image: gcr.io/google_containers/exechealthz:1.0
    mem_limit: 20971520b
    ports:
    - '8080'
  kube2sky:
    command: --kubecfg-file=/etc/kubernetes/worker-kubeconfig.yaml --domain=cluster.local
    cpu_shares: 102.4
    image: gcr.io/google_containers/kube2sky:1.14
    mem_limit: 209715200b
    volumes:
    - /usr/share/ca-certificates:/etc/ssl/certs
    - /etc/kubernetes/worker-kubeconfig.yaml:/etc/kubernetes/worker-kubeconfig.yaml:ro
    - /etc/kubernetes/ssl:/etc/kubernetes/ssl:ro
  skydns:
    command: -machines=http://127.0.0.1:4001 -addr=0.0.0.0:53 -ns-rotate=false -domain=cluster.local.
    cpu_shares: 102.4
    image: gcr.io/google_containers/skydns:2015-10-13-8c72f8c
    mem_limit: 209715200b
    ports:
    - 53/udp
    - '53'
$ container-transform -i compose -o kubernetes docker-compose.yaml
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  labels:
    app: null
    version: latest
  name: null
  namespace: default
spec:
  replicas: 1
  selector:
    matchLabels:
      app: null
      version: latest
  template:
    metadata:
      labels:
        app: null
        version: latest
    spec:
      containers:
      - command:
        - /usr/local/bin/etcd
        - -data-dir
        - /var/etcd/data
        - -listen-client-urls
        - http://127.0.0.1:2379,http://127.0.0.1:4001
        - -advertise-client-urls
        - http://127.0.0.1:2379,http://127.0.0.1:4001
        - -initial-cluster-token
        - skydns-etcd
        image: gcr.io/google_containers/etcd-amd64:2.2.1
        name: etcd
        resources:
          limits:
            cpu: 100.0m
            memory: 500Mi
      - args:
        - -cmd=nslookup
        - kubernetes.default.svc.cluster.local
        - 127.0.0.1
        - '>/dev/null'
        - -port=8080
        image: gcr.io/google_containers/exechealthz:1.0
        name: healthz
        ports:
        - containerPort: 8080
          protocol: TCP
        resources:
          limits:
            cpu: 10.0m
            memory: 20Mi
      - args:
        - --kubecfg-file=/etc/kubernetes/worker-kubeconfig.yaml
        - --domain=cluster.local
        image: gcr.io/google_containers/kube2sky:1.14
        name: kube2sky
        resources:
          limits:
            cpu: 100.0m
            memory: 200Mi
        volumeMounts:
        - mountPath: /etc/ssl/certs
          name: usr-share-ca-certificates
        - mountPath: /etc/kubernetes/worker-kubeconfig.yaml
          name: etc-kubernetes-worker-kubeconfig.yaml
          readOnly: true
        - mountPath: /etc/kubernetes/ssl
          name: etc-kubernetes-ssl
          readOnly: true
      - args:
        - -machines=http://127.0.0.1:4001
        - -addr=0.0.0.0:53
        - -ns-rotate=false
        - -domain=cluster.local.
        image: gcr.io/google_containers/skydns:2015-10-13-8c72f8c
        name: skydns
        ports:
        - containerPort: 53
          protocol: UDP
        - containerPort: 53
          protocol: TCP
        resources:
          limits:
            cpu: 100.0m
            memory: 200Mi
      volumes:
      - hostPath:
          path: /etc/kubernetes/ssl
        name: etc-kubernetes-ssl
      - hostPath:
          path: /etc/kubernetes/worker-kubeconfig.yaml
        name: etc-kubernetes-worker-kubeconfig.yaml
      - hostPath:
          path: /usr/share/ca-certificates
        name: usr-share-ca-certificates

Compose to ECS

$ cat docker-compose.yml | container-transform  -v
{
    "family": "python-app",
    "volumes": [
        {
            "name": "host_logs",
            "host": {
                "sourcePath": "/var/log/myapp"
            }
        }
    ],
    "containerDefinitions": [
        {
            "memory": 1024,
            "image": "postgres:9.3",
            "name": "db",
            "essential": true
        },
        {
            "memory": 128,
            "image": "redis:latest",
            "name": "redis",
            "essential": true
        },
        {
            "name": "web",
            "memory": 64,
            "command": [
                "uwsgi",
                "--json",
                "uwsgi.json"
            ],
            "mountPoints": [
                {
                    "sourceVolume": "host_logs",
                    "containerPath": "/var/log/uwsgi/"
                }
            ],
            "environment": [
                {
                    "name": "AWS_ACCESS_KEY_ID",
                    "value": "AAAAAAAAAAAAAAAAAAAA"
                },
                {
                    "name": "AWS_SECRET_ACCESS_KEY",
                    "value": "1111111111111111111111111111111111111111"
                }
            ],
            "essential": true
        }
    ]
}
Container web is missing required parameter "image".
Container web is missing required parameter "cpu".

Quick Help

Usage: container-transform [OPTIONS] [INPUT_FILE]

  container-transform is a small utility to transform various docker
  container formats to one another.

  Default input type is compose, default output type is ECS

  Default is to read from STDIN if no INPUT_FILE is provided

  All options may be set by environment variables with the prefix "CT_"
  followed by the full argument name.

Options:
  -i, --input-type [ecs|compose|marathon|chronos|kubernetes]
  -o, --output-type [ecs|compose|systemd|marathon|chronos|kubernetes]
  -v, --verbose / --no-verbose    Expand/minify json output
  -q, --quiet                     Silence error messages
  --version                       Show the version and exit.
  -h, --help                      Show this message and exit.

Docker Image

To get the docker image, run:

docker pull micahhausler/container-transform:latest

To run the docker image:

docker run --rm -v $(pwd):/data/ micahhausler/container-transform  docker-compose.yml

# or
cat docker-compose.yml | docker run --rm -i micahhausler/container-transform

Installation

To install the latest release (Python 3 only), type:

pip install container-transform

To install the latest code directly from source, type:

pip install git+git://github.com/micahhausler/container-transform.git

Documentation

Full documentation is available at http://container-transform.readthedocs.org

License

MIT License (see LICENSE)

Release History

Release History

1.1.5

This version

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1.1.1

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0.6.1

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0.5.1

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0.5.0

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0.5.0a2

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0.4

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0.3

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0.2

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0.1

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
container-transform-1.1.5.tar.gz (22.8 kB) Copy SHA256 Checksum SHA256 Source May 14, 2017

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