K8s Application Version Checks

• Offers the possibility to monitor versions of installed tools in a kubernetes cluster
• Automagically finds tools that were installed with helm
• Offers prometheus metrics endpoint for integration in grafana
• Lists the most recent versions from github
• Latest releases are parsed from github atom feeds

Development

1. Git clone

2. Create/copy and fill configuration from template ./config/feeds.yaml

3. Run make build_container

4. Run make run_container

5. Once in container run

   kubetoken for k8s login
   kubectl port-forward $(kubectl get pod --selector app=helm,name=tiller -o jsonpath={.items..metadata.name} -n kube-system) 44134:44134 -n kube-system
go run main.go

6. Point your browser to localhost:8888

Application and Cluster Configuration

• Fill config/feeds.yaml following this example:

TillerConnectionURI: "127.0.0.1:44134"
StaticFeeds:
  -
    Link: https://github.com/kubernetes/kops/releases.atom
    Name: Kops
    Installed: 1.11.0
FeedMap:
  -
    Link: https://github.com/prometheus/prometheus/releases.atom
    Name: prometheus

• TillerConnectionURI should be the full URI to tiller, for example: tiller-deploy.kube-system:44134#
• StaticFeeds are feeds that should be parsed for latest versions. The installed version is static and has to be filled manually for components that don't allow automatic parsing from feeds
• FeedMap maps Name to helm's deployment Name and uses the configured feed URL to get the latest version

Environment Variables for Configuration

• KVT_CONFIG_PATH: Path to feeds.yaml config file. Default: "./config"

• KVT_CACHE_ENABLE: Enable File Cache for Results. Default: true

• KVT_CACHE_TIME: Cache TTL in Seconds. Default: 600

• KVT_HTTP_ADDR: The host and port. Default: ":8888"

• KVT_HTTP_CERT_FILE: Path to cert file. Default: ""

• KVT_HTTP_KEY_FILE: Path to key file. Default: ""

• KVT_HTTP_DRAIN_INTERVAL: How long application will wait to drain old requests before restarting. Default: "1s"

Installation

• Use provided helm chart from charts/ directory