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Deploy Apps to OpenFaas and faasd

OpenFaaS Apps 

What is OpenFaaS? 

OpenFaaS makes it relatively simple to deploy both serverless functions and existing code in stateless containers on Kubernetes or directly on Linux hosts, on any public or private cloud. Learn more at OpenFaas.com

Package an App for OpenFaaS 

For details on how to develop and package apps for AWS see serverless example

Deploy with appsctl 

An App designed and bundled for OpenFaaS can be deployed to the customer’s own OpenFaaS or faasd environments, and then installed on a self-managed (“on-prem”) Mattermost server, using the appsctl openfaas deploy command.

This command requires that faas-cli is installed and configured, with credentials sufficiently privileged to deploy functions.

OpenFaaS requires a docker registry to pass the images that it builds to the function instances, so docker must have been configured, and docker login done, with sufficient credentials to push to the registry of choice.

To deploy OpenFaaS Apps use appsctl openfaas deploy {openfaas-bundle.zip} command. It will deploy all functions in the bundle, and “list” (upload the manifest of) the app in Mattermost server. --install can be used to automatically install the app once it’s deployed.

Flags:

  • --docker-registry the docker registry name (will be used as a prefix for the image name) to push the function images to.
  • --install install the app onto the Mattermost server once it’s been successfully deployed.
  • --update update the function that already exists.

The command requires that the following environment variables are set:

  • MM_SERVICESETTINGS_SITEURL must be set to where the Mattermost server APIs can be accessed.
  • MM_ADMIN_TOKEN must be set to access the Mattermost REST APIs.
  • OPENFAAS_URL must be set to the admin (root) URL of the OpenFaaS installation.

Once deployed, apps can be installed interactively in Mattermost using /apps install listed command.

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