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Configuring Logging ​

This document describes how to configure logging for Serverless components. The Serverless module supports dynamic log reconfiguration through the Serverless custom resource (CR).

NOTE

  • logLevel changes are applied dynamically without restarting the Serverless Pods
  • logFormat changes automatically restart the Serverless Pods to apply the new format

Supported Log Levels ​

From the least to the most verbose: fatal, panic, dpanic, error, warn, info (default), debug.

Supported Log Formats ​

  • json - Structured JSON format (default)
  • console - Human-readable console format

Configure Serverless Controller ​

Update the log configuration by modifying the Serverless CR in the kyma-system namespace:

bash
# Change log level (updates ConfigMap without restarting Pods)
kubectl patch serverless -n kyma-system default --type merge -p '{"spec":{"logLevel":"debug"}}'

# Change log format (updates ConfigMap and restarts Pods)
kubectl patch serverless -n kyma-system default --type merge -p '{"spec":{"logFormat":"console"}}'

# Change both level and format
kubectl patch serverless -n kyma-system default --type merge -p '{"spec":{"logLevel":"debug","logFormat":"console"}}'

Verify the change:

bash
kubectl logs -n kyma-system -l app.kubernetes.io/name=serverless

Configuring Serverless Operator ​

Update the log configuration in the serverless-operator-log-config ConfigMap in the kyma-system namespace:

bash
# Change log level
kubectl patch configmap serverless-operator-log-config -n kyma-system --type merge -p '{"data":{"log-config.yaml":"logLevel: debug"}}'

# Change log level and format
kubectl patch configmap serverless-operator-log-config -n kyma-system --type merge -p '{"data":{"log-config.yaml":"logLevel: debug\nlogFormat: console"}}'

Verify the change:

bash
kubectl logs -n kyma-system -l control-plane=operator

NOTE

It is not possible to dynamically change the log format for the Serverless Operator. If you want to change it, update the ConfigMap and restart the Pods.