/operator-nodejs

Primary LanguageGo

operator-nodejs

POC of "day-2" operations for Node.js, equivalent to the OpenLiberty Day-2 Operations.

Try it out

  1. Deploy a report-capable application with appsody.
  2. Use operator-nodejs to trigger a report.

Deploy an appsody app built with a report-capable stack:

  1. Package the stack that supports diagnostic report
    1. Checkout appsody/stacks#722
    2. cd stacks/incubator/nodejs-expres
    3. appsody stack package
  2. Build an app based on the stack
    1. mkdir ex-nodejs-report
    2. cd ex-nodejs-report
    3. appsody init dev.local/nodejs-express
    4. appsody build
  3. Confirm it runs locally and generates reports
    1. docker run -it dev.local/ex-nodejs-report
    2. (in another terminal) docker exec CONTAINER /bin/sh -c 'kill -USR2 $(pidof node)'
    3. ... see json report logged to stdout... note it is not (yet) consumable by a JSON log system because it is multi-line:
  4. Deploy app with appsody
    1. appsody deploy -t octet/ex-nodejs-report --push
    2. kubectl get pod -L nodejs.appsody.dev/report
    3. Remember the name of the reportable nodejs pod for later

Use operator-nodejs to trigger a report.

In separate terminals:

  • run operator: make kube-init local-run
  • show logs: kubectl logs -f pod/PODNAME-FROM-ABOVE
  • trigger report: make example-report

Reporting is done by creating a NodejsReport custom resource:

apiVersion: opnodejs.appsody.dev/v1beta1
kind: NodejsReport
metadata:
  name: example-nodejsreport
spec:
  podName: REPLACEME_PODNAME

TODO

etcd-operator and prometheus-operator are implemented with basic client-go based controllers. No Operator SDK, no Kubebuilder, etc.