Outgoing Webhook

Install BotKube Backend in Kubernetes cluster

BotKube can be integrated with external apps via Webhooks. A webhook is essentially a POST request sent to a callback URL. So you can configure BotKube to send events on specified URL.

Using helm

• We will be using helm to install BotKube in Kubernetes. Follow this guide to install helm if you don’t have it installed already
• Add infracloudio chart repository

  $ helm repo add infracloudio https://infracloudio.github.io/charts
  $ helm repo update

• Deploy BotKube backend using helm install in your cluster.

  $ helm install --version v0.12.4 botkube --namespace botkube \
  --set communications.webhook.enabled=true \
  --set communications.webhook.url=<WEBHOOK_URL> \
  --set config.settings.clustername=<CLUSTER_NAME> \
  --set image.repository=infracloudio/botkube \
  --set image.tag=v0.12.4 \
  infracloudio/botkube

where,
- WEBHOOK_URL is an outgoing webook URL to which BotKube will POST the events
- CLUSTER_NAME is the cluster name set in the incoming messages

Configuration syntax is explained here. Complete list of helm options is documented here.

• Create new file config.yaml and add resource configuration as described on the configuration page.

  (You can refer sample config from https://raw.githubusercontent.com/infracloudio/botkube/v0.12.4/helm/botkube/sample-res-config.yaml)

  config:
    ## Resources you want to watch
    resources:
    - name: v1/pods        # Name of the resource. Resource name must be in 
                           # group/version/resource (G/V/R) format
                           # resource name should be plural
                           # (e.g apps/v1/deployments, v1/pods)
      namespaces:          # List of namespaces, "all" will watch all the namespaces
        include:
        - all
        ignore:            # List of namespaces to be ignored, used only with include: all
        - kube-system      # example : include [all], ignore [x,y,z]
      events:              # List of lifecycle events you want to receive,
                           # e.g create, update, delete, error OR all
      - create
      - delete
      - error
    - name: batch/v1/jobs
      namespaces:
        include:
        - ns1
        - ns2
      events:
      - create
      - update
      - delete
      - error
      updateSetting:
        includeDiff: true
        fields:
        - spec.template.spec.containers[*].image
        - status.conditions[*].type

• Pass the yaml file as a flag to helm install command. e.g

  $ helm install --version v0.12.4 --name botkube --namespace botkube -f /path/to/config.yaml --set=...other args..
  

Alternatively, you can also update the configuration at runtime as documented here

Using kubectl

• Make sure that you have kubectl cli installed and have access to Kubernetes cluster
• Download deployment specs yaml

$ wget -q https://raw.githubusercontent.com/infracloudio/botkube/v0.12.4/deploy-all-in-one.yaml

• Open downloaded deploy-all-in-one.yaml and update the configuration.
  

Set WEBHOOK_ENABLED=true, WEBHOOK_URL, clustername and update the resource events configuration you want to receive notifications for in the configmap.

where,
- WEBHOOK_URL is an outgoing webook URL to which BotKube will POST the events
- CLUSTER_NAME is the cluster name set in the incoming messages

• Deploy the resources

$ kubectl create -f deploy-all-in-one.yaml

• Check pod status in botkube namespace.

Remove BotKube

Using helm

If you have installed BotKube backend using helm, execute following command to completely remove BotKube and related resources from your cluster

$ helm delete --purge botkube

Using kubectl

$ kubectl delete -f https://raw.githubusercontent.com/infracloudio/botkube/v0.12.4/deploy-all-in-one.yaml