Usage

Build, run, and operate functions on Fission day to day.

This section is the hands-on guide to using Fission once it is installed on your cluster. Each page is task-oriented: it states what you will accomplish, lists the commands to run, and shows the output to expect.

If you have not installed Fission yet, start with the Installation guide. For the concepts behind these tasks, see Concepts.

Guide map

Work through the function workflow in roughly this order:

Create an environment — register a language runtime (NodeJS, Python, Go, and more) so Fission can run your code.
Create a function — deploy code, add an HTTP route, and test, update, and inspect functions.
Package source code — build functions from source archives or ship pre-built deployment packages.
Control function execution — choose an executor (poolmgr, newdeploy, or container) and tune scaling, concurrency, and cold starts.
Run a container as a function — turn any existing container image into a Fission function.
Access secrets and ConfigMaps — read Kubernetes Secrets and ConfigMaps from inside a function.
Access URL parameters — read path parameters from REST-style routes.
Canary deployments — roll out a new function version gradually and roll back automatically on failure.

Operational and advanced topics:

For reproducible, version-controlled deployments, also read about the spec-based workflow.