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World Congress 2022 • Jun 15, 2022

Debug a Kubernetes Operator

Philipp Krenn

Are hanging pods and unbound PVCs stalling your Kubernetes cluster? Skip the endless log parsing and learn practical strategies to debug opinionated operator abstractions fast.

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#1 about 5 min

Overview of Kubernetes operators and custom resource definitions

How operators abstract lower-level Kubernetes concepts into custom resource definitions.

#2 about 2 min

Understanding the continuous control loop in Kubernetes operators

How custom controllers reconcile the desired cluster state against the current deployed architecture.

#3 about 2 min

Installing and verifying the elastic operator on a namespace

Checking deployment statuses and namespaces to confirm the operator is actively running.

#4 about 4 min

Deploying a primary Elasticsearch and Kibana cluster configuration

Defining cluster sizing boundaries and service associations using specific custom resource files.

#5 about 7 min

Debugging misconfigured custom resources and missing backend associations

Using describe commands to fix incorrect resource references and retrieve auto-generated credentials.

#6 about 7 min

Troubleshooting unbound persistent volume claims and storage classes

Identifying missing storage classes and recreating stateful sets with available persistent volumes.

#7 about 7 min

Customizing operator inputs and overriding default cluster configurations

Why operators encode opinionated best practices and how they compare with traditional Helm chart deployments.

#8 about 2 min

Orchestrating with Kubernetes against Docker and accessing slides

Discussing the advantages of complete orchestration frameworks versus basic independent Docker containers.

Matching moments

2:39 min

Understanding continuous reconciliation loops in Kubernetes operator patterns

Zan Markan Zan Markan · LIVE

6:56 min

Architecting continuous reconciliation loops with Kubernetes controllers

Thomas Schütz · LIVE

1:42 min

Abstracting Kubernetes complexity with a self-service operator

Jan Lepsky Jan Lepsky

1:30 min

Enabling GitOps using custom resource definitions and Kubernetes operators

Zan Markan Zan Markan · LIVE

4:44 min

Automating database recovery and management using Kubernetes operators

Denis Wilson Souza Rosa +1 · LIVE

4:54 min

Managing heterogeneous deployment lifecycles via Kubernetes operators

Wei Hu Wei Hu · WWC 2022

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