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document Falco alerting secret
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Falco alerting secret

Falco alert delivery must use a Kubernetes Secret. Do not commit a Slack Incoming Webhook URL, Slack token, Discord webhook URL, or generated Secret manifest to this repository.

The expected Secret contract for the future alerting configuration is:

apiVersion: v1
kind: Secret
metadata:
  name: falco-alerting
  namespace: falco
type: Opaque
stringData:
  webhook-url: https://hooks.slack.com/services/REPLACE/ME

The example value is a placeholder. Create the Secret directly on the cluster with the real Slack Incoming Webhook URL:

kubectl create namespace falco --dry-run=client -o yaml | kubectl apply -f -
kubectl create secret generic falco-alerting \
  --namespace falco \
  --from-literal=webhook-url='https://hooks.slack.com/services/REPLACE/ME' \
  --dry-run=client -o yaml | kubectl apply -f -

The webhook-url key is the interface that the Falco alerting configuration will consume. The Secret is intentionally not included in the Falco Kustomization because ArgoCD must not manage or render the credential from Git.

Verify only the Secret name and key, never the value:

kubectl get secret falco-alerting -n falco \
  -o jsonpath='{.metadata.name}{" keys: "}{range $key, $value := .data}{$key}{" "}{end}{"\n"}'

Avoid printing Secret data in shared terminals or CI logs. To rotate the webhook, update the Secret in place with the creation command and restart the Falco workloads after the alerting integration is configured.

The repository currently verifies Falco runtime detections locally. Webhook delivery remains a separate configuration step because it requires an interactive Slack or Discord credential.