watcher

Helm-based continuous delivery tool.

Description

Watcher checks Helm repositories for new versions of configured Charts based on a strategy. If a new version is available, then it will try to deploy it inside your cluster automatically.

Installation

From source

Please make sure you have installed Crystal and friends on your machine. Once you have all the tooling in place, let's start building the application:

shards build --release --no-debug --static

This will build the application in "production" mode; it might take a few seconds to spit out an executable. Once done, the application will be available inside the ./bin directory.

NOTE: You will NOT be able to build a static executable under macOS; you will need to remove the --static option.

Using Docker

docker pull boord/watcher
docker run

NOTE: You can also check the provided Docker Compose file for an example of how to run the application.

Via Helm

helm repo add boord https://charts.boord.io
helm install watcher boord/watcher

Configuration

version: "1"
name: Grafana

source:
  repository: https://grafana.github.io/helm-charts
  chart: grafana
  strategy: LatestCreatedStable

target:
  name: grafana
  namespace: monitoring
  create_namespace: true
  values:
    service:
      type: LoadBalancer

    persistence:
      enabled: true
      size: 20Gi

Development environment

The development environment has the following requirements:

• minikube or an alternative, the Kubernetes version distributed with Docker seems to work fine.
• Helm (optional)
• Helm ChartMuseum plugin (optional)

docker-compose up -d --build

Running the command above will build, and start watcher alongside a chartmuseum instance. To quickly inspect the logs for watcher, just run the following command:

docker logs -f watcher

At this point, chartmuseum is available on http://localhost:8080 and the authentication/authorization features are entirely disabled. You can use your local helm CLI tool to interact with it. If you have installed the ChartMuseum Push plugin, you can start uploading Helm Charts into this instance.

You can remove the entire development environment with the following command:

docker-compose down

Contributing

1. Fork it (https://github.com/boorderline/watcher/fork)
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request

Contributors

• Tudor Marghidanu - creator and maintainer