CLI Deployment Options

There are a few ways to use the deploy command from the Command-line Interface that we haven’t looked at until this point. In this tutorial we will look at those, to make sure you have a good idea of the options you have available.

Note

Always remember the --help option. It can be used with each command as well as the whole mvi command-line app to get a description of what options you have. If you are unsure how and what-for a certain command is used, it should be your go-to option.

So far, we have only deployed services from project directories, but there are a few more options. First of all, it is possible to deploy a service from a tarball (.tar.gz file), which is actually what is been happening behind the scenes.

There’s also two options for deployment source: --git which deploys a service given a git repository with the same contents as the services we have deployed so far. It is functionally identical to deploying from a local directory. For now, it only supports public git repositories:

>>> mvi deploy --git my_service 1.0.0 https://github.com/sclorg/django-ex 
Active host: http://your-host
Deploying service...
Service deployed successfully
MAIN    NAME        VERSION    STATUS    RUNNING
------  ----------  ---------  --------  -----------------------------------
*       my_service  1.0.0      running   Running (since 2020-11-23 16:56:06)

The --image option can be used to deploy any docker image as an MVI service. This can be useful for deploying applications that are not written using the SDK within the MVI framework. Similar to the --git option it only supports public images for now. Keep in mind that most pre-build images will not support the automatic interactive documentation:

>>> mvi deploy --image my_service2 1.0.0 traefik/whoami --port 80 
Active host: http://your-host
Deploying service...
Service deployed successfully
MAIN    NAME         VERSION    STATUS    RUNNING
------  -----------  ---------  --------  -----------------------------------
*       my_service2  1.0.0      running   Running (since 2020-11-23 16:57:55)

In the last command we used an optional argument to change the internal port of the service container. This is not required when deploying services locally or from git repositories, but it might be necessary when deploying from an image.

Each of these options can also be used with only their first letter:

Long Option	Short option
–git	-g
–image	-i
–port	-p

Advanced Deployment of Docker Images

Extra key: value arguments (beyond port number and environment variables) needed for the docker image to run properly can be specified when deploying the image via the /~image POST HTTP endpoint. These extra key: value arguments should be specified under the docker_run_args key in the request data field. The accepted parameters for docker run which can be found here.

For instance, a docker image that requires privileged mode to run properly can be deployed like (using pythons request library):

requests.post(
    url='https://<host>/~image,
    headers=<headers>,
    data = {
        'image':<image>
        'name':<name>,
        'version':<version>,
        'port':<port>,
        'docker_run_args': {
            'privileged': true,
            ...
        }
    })

The interactive docs at <host>/docs is also very useful for this kind of deployment.