peanut-engine

peanut-engine

A simple component for deploying from a Git Repository using argoproj/gitops-engine.

This includes automated git synchronisation, and parsing of Kustomize files.

This is really just a thin wrapper around gitops-engine.

Running

peanut-engine accepts a large number of options, but for most purposes you only need three.

To synchronise a Git repository hosted in GitHub to your cluster, the simplest command-line is:

$ peanut-engine --repo-url https://github.com/org/repo.git --branch main --path deploy/environments/staging

This will run something very similar to kubectl apply -k deploy/environments/staging from your repo/branch combination, every 5 minutes.

Resync frequency

By default, your resources are applied every 5 minutes, this can be configured via the --resync option, this accepts "s", "m", and "h" e.g. 3h would cause your cluster to be synchronised every 3 hours.

Metrics

Prometheus metrics are exposed by default at http://service:8080/metrics.

Triggering manually

Your cluster will be synchronised with the desired frequency (see Resync frequency above), but you can also trigger a resync manually with curl.

$ curl -X POST http://service:8080/

Disable pruning

By default, peanut-engine will "prune" resources that don't exist in your namespace from the data you provide.

You can disable this with --prune=false as a command-line option.

Namespacing mode

You can limit the namespaces that peanut-engine targets, by configuring appropriately.

Modify the command-line in th Deployment to use

--namespaced=true

Command-line flags

peanut-engine has a number of command-flags, but most of these are to allow configuration of the Kubernetes API client.

The following flags control the behaviour of peanut-engine specifically.

 --repo-url string                Repository to deploy e.g. https://github.com/example/example.git
 --branch string                  Branch to checkout e.g. production
 --path string                    Path within the Repository to deploy e.g. deploy
 --resync duration                Resync frequency (default 5m0s)
 --auth-token string              Authentication token to use for private repositories
 --parser string                  Which parser to use kustomize, or manifest, manifest will parse non-Kustomize configurations (default "kustomize")
 --prune                          Enables resource pruning - i.e. resources not in the set will be removed
 --default-namespace string       The namespace that should be used if resource namespace is not specified.By default resources are installed into the same namespace where peanut-engine is installed.
 --namespaced                     Switches agent into namespaced mode

Testing

$ go test ./...