[PYTHON] Run the IDCF cloud CLI with Docker

I've previously looked at Design Patterns for Running CLI on Docker Container, but this time IDCF Cloud CLI Let's make an image of .jp / cloud / spec / api.html). You can prepare a virtual environment with virtuanemv, but if you distribute commands with a Docker image, you can try it without polluting the environment of the host machine. You can do it. The Docker image can also be conveniently used as a CLI distribution format.

project

The repository created this time is here.

Dockerfile

The base image uses 2.7 ON BUILD of the official Python. The Dockerfile is very easy because ONBUILD does the necessary processing for the build.

`Dockerfile`


FROM python:2-onbuild

requirements.txt

The IDCF Repository does not include requirements.txt. Define the addition of dependent packages and cloudstack-api to be installed via GitHub as well.

`requirements.txt`


httplib2
simplejson
argparse
prettytable==0.5
parsedatetime==0.8.7
lxml
-e git+https://github.com/idcf/cloudstack-api#egg=cloudstack-api

The ONBUILD base image will COPY and pip install the requirements.txt file.

`Dockerfile`


FROM python:2.7

RUN mkdir -p /usr/src/app
WORKDIR /usr/src/app

ONBUILD COPY requirements.txt /usr/src/app/
ONBUILD RUN pip install --no-cache-dir -r requirements.txt

ONBUILD COPY . /usr/src/app

docker-compose.yml

Set environment variables from the IDCF Cloud Console API Key (https://console.idcfcloud.com/user/apikey).

IDCF_COMPUTE_HOST: Endpoint
IDCF_COMPUTE_API_KEY: API Key
IDCF_COMPUTE_SECRET_KEY: Secret Key

`docker-compose.yml`


idcfcli:
  build: .
  volumes:
    - /etc/localtime:/etc/localtime:ro
  environment:
    - IDCF_COMPUTE_HOST=
    - IDCF_COMPUTE_API_KEY=
    - IDCF_COMPUTE_SECRET_KEY=
  command: ["/usr/local/bin/cloudstack-api","listVirtualMachines","-t=id,name,state"]

How to use

git clone from the repository. Rename docker-compose.yml.default to docker-compose.yml and set the environment variables.

$ git clone https://github.com/masato/docker-idcfcli.git idcfcli
$ cd idcfcli
$ mv docker-compose.yml.default docker-compose.yml
$ vi docker-compose.yml

Start the container from Docker Compose. The default command is running listVirtualMachines.

$ docker-compose build
$ docker-compose run --rm idcfcli
+--------------------------------------+------+---------+
|                  id                  | name |  state  |
+--------------------------------------+------+---------+
| xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx | seed | Running |
+--------------------------------------+------+---------+

Execute any command as follows.

$ docker-compose run --rm idcfcli cloudstack-api listVirtualMachines -t=id,name,state
+--------------------------------------+------+---------+
|                  id                  | name |  state  |
+--------------------------------------+------+---------+
| xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx | seed | Running |
+--------------------------------------+------+---------+

Creating an alias

Define an alias in ~ / .bashrc etc.

`~/.bashrc`


alias idcf-cli='docker-compose run --rm idcfcli cloudstack-api'

Using aliases makes it more CLI-like.

$ idcf-cli listVirtualMachines -t=id,name,state
+--------------------------------------+------+---------+
|                  id                  | name |  state  |
+--------------------------------------+------+---------+
| xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx | seed | Running |
+--------------------------------------+------+---------+