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Context command

Context files are used to define deployment enviroments. Multiple contexts representing different enviroments can be created with each context specifying an appropriate provider and a set of properties required/understood by that provider with the ability to switch between them. Contexts are persisted in individual files under the .fn directory which, if not present, is created on launch.

~ 
  .fn
     config.yaml
     contexts
        default.yaml

The config.yaml contains the name of currently selected context, when first created the current context is not set:

current-context: ""

Within the default.yaml default values are set:

api-url: http://localhost:8080
provider: default
registry: ""
  • api-url - the fn-server endpoint.
  • provider - the a specific provider which identifies a set of properties required/understood by that provider.
  • registry - the Docker registry username to push images to [registry.hub.docker.com/registry].

Listing Contexts

The list all context use ls or list.

$ fn list context

Creating a Context

To create a context use c or create. The context file will be created with default values but option flags can be used override.

$ fn create context <context>
$ fn create context <context> --api-url foo --provider bar --registry <dockerhub-username>

Using a Context

To use a context use u or use followed by the name of the context.

$ fn use context <context>

Deleting a Context

To delete a context use d or delete followed by the name of the context.

You can not delete the currently used context or the default context as it is protected.

$ fn delete context <context>

Unsetting Context

To unset the current context use un or unset:

This will unset the current-context.

$ fn unset context

Updating Context

To update the current context use up or update followed by a key value pair:

$ fn update context <key> <value>

Enviroment Variables

The current supported env vars 'FN_API_URL' and 'FN_REGISTRY' will override the configured context properties.