sample-app

Sample Application

This example should demonstrate the capabilities of the lifecycle toolkit as illustrated here:

PostDeployment Slack Notification

This section describes how to prepare and enable post-deployment tasks to send notifications to slack using webhooks.

Create Slack Webhook

In the first step, create an incoming slack webhook. Necessary information is available in the slack api page. Once you create the webhook, you will get a URL similar to below example.

https://hooks.slack.com/services/T00000000/B00000000/XXXXXXXXXXXXXXXXXXXXXXXX

T00000000/B00000000/XXXXXXXXXXXXXXXXXXXXXXXX is the secret part of the webhook which we would need in the next step.

Create slack-secret

Create a slack-secret.yaml definition using the following command. This will create a kubernetes secret named slack-secret.yaml in the base directory.

kubectl create secret generic slack-secret --from-literal=SECURE_DATA='{"slack_hook":<YOUR_HOOK_SECRET>,"text":"Deployed PodTatoHead Application"}' -n podtato-kubectl -oyaml --dry-run=client > base/slack-secret.yaml

Enable post deployment task

To enable Slack notification add post-deployment-notification in as a postDeploymentTasks in the app.yaml file as shown below.

  postDeploymentTasks:
    - post-deployment-notification

Deploy the Observability Part and Keptn-lifecycle-toolkit

make install

Port-Forward Grafana

make port-forward-grafana

If you want to port-forward to a different port, please execute: make port-forward-grafana GRAFANA_PORT_FORWARD=<port>

Deploy Version 1 of the PodTatoHead

make deploy-version-1

Now watch the progress on the cluster kubectl get keptnworkloadinstances kubectl get keptnappversions

You could also open up a browser and watch the progress in Jaeger. You can find the Context ID in the "TraceId" Field of the KeptnAppVersion

The deployment should fail because of too few cpu resources

Deploy Version 2 of the PodTatoHead

make deploy-version-2

• Watch the progress of the deployments
• After some time, you should see that everything is successful

Deploy Version 3

make deploy-version-3

• This should only change one service, you can see that only this changed in the trace