logging-operator.md

Logging with Logging Operator and Fluentd

TODO: Intro

Setup

• Install gum by following the instructions in https://github.com/charmbracelet/gum#installation.
• Watch https://youtu.be/U8zCHA-9VLA if you are not familiar with Charm Gum.

chmod +x manuscript/logging/logging-operator.sh

./manuscript/logging/logging-operator.sh

Do

kubectl get loggings,fluentbitagents,outputs --all-namespaces

cat logging-operator/event-tailer.yaml

cp logging-operator/event-tailer.yaml infra/.

git add .

git commit -m "EventTailer"

git push

kubectl --namespace monitoring logs \
    --selector app.kubernetes.io/instance=default-event-tailer \
    | jq .

• If the output says No resources found in monitoring namespace, the EventTailer has not yet been deployed. Wait for a few moments and try again.

echo "http://grafana.$INGRESS_HOST"

• Open it in a browser
• Use admin as the user and prom-operator as the password
• Open Explore
• Choose Loki as the data source.
• Filter by app_kubernetes_io_instance set to default-event-tailer

How Did You Define Your App?

• Helm
• Kustomize
• Carvel ytt
• cdk8s has not yet been implemented. Please let us know (by opening an issue) if you would like to contribute the implementation.