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Operatorhub.io and your Kubernetes cluster | DevNation Tech Talk
The document discusses Kubernetes operators and the Operator Lifecycle Manager. Operators are automated software managers that manage the entire lifecycle of Kubernetes applications. The Operator Lifecycle Manager allows publishing and subscribing to operators from an Operator Hub, which provides a catalog of community and commercial operators that can easily be installed and managed. Operators improve time to value, reduce upgrade risks, and provide cloud-like services on Kubernetes.
Operatorhub.io and your Kubernetes cluster | DevNation Tech Talk
- 1. With the OperatorLifecycle Manager Operator Hub and your Kubernetes Cluster Josh Wood Developer Advocate, Red Hat joshix@redhat.com – @joshixisjosh9 – joshix.com 1
- 2. 2 Why should youcare about Operators?
- 3. 3 Any application inany system must be installed, configured, managed and upgraded over time Patching is critical to security
- 4. “Anything that isn’t automatedis slowing you down” 4
- 5. 5 What is Kubernetes? Anopen source orchestration system for managing containerized workloads across a cluster of nodes.
- 6. 6 Kubernetes Object Definitions kind:Pod apiVersion: v1 metadata: name: example-app spec: containers: - name: example image: quay.io/my/app:v1.2.0 [...]
- 7. Kubernetes is adeclarative platform 7
- 8.
- 9. 9 $ kubectl scaledeploy/staticweb --replicas=3
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- 12. 12 What about appsthat store data?
- 13. 13 Deploying a databaseis easy
- 14. 14 $ kubectl createdeployment db --image=quay.io/my/db
- 15. 15 Running a databaseover time is harder
- 16. 16 ● Resize/Upgrade ● Reconfigure ●Backup ● Healing
- 17. 17 If only Kubernetesknew...
- 18. 18 1. Application-specific customcontrollers 2. Custom resource definitions (CRD) Extending the Kubernetes API
- 19. 19 Custom Resource Developer / KubernetesUser Deployments StatefulSets Autoscalers Secrets Config maps PersistentVolume How Does an Operator Work? K8s API kind: ProductionReadyDatabase apiVersion: database .example.com/v1alpha1 metadata: name: my-important -database spec: connectionPoolSize: 300 readReplicas: 2 version: v4.0.1 Custom Kubernetes Controller Watch Events Reconciliation + Custom Resource Definition Kubernetes Operator Native Kubernetes Resources
- 20. 20 Custom Resource (CR) kind:ProductionReadyDatabase apiVersion: database.example.com/v1alpha1 metadata: name: my-production-ready-database spec: clusterSize: 3 readReplicas: 2 version: v4.0.1 [...]
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- 23. 23 Operators are automatedsoftware managers that manage the entire lifecycle of Kubernetes applications
- 24. Value of Operators 24 Improvethe “time to first value” for your customers Minimize software upgrade risk and associated operational costs Embed best practices from the experts – you – into the Operator Provide a cloud-like "As a Service" experience
- 25. Operator Deployment Custom Resource Definitions RBAC APIDependencies Update Path Metadata YourOperator v1.1.2 Bundle OPERATOR LIFECYCLE MANAGER Deployment Role ClusterRole RoleBinding ClusterRoleBinding ServiceAccount CustomResourceDefinition OPERATOR LIFECYCLE MANAGER: The Operator Operator 25
- 26. 26 OPERATOR LIFECYCLE MANAGER YourOperator v1.1.2 YourOperatorv1.1.3 YourOperator v1.2.0 YourOperator v1.2.2 Subscription for YourOperator Time VersionOperator Catalog OPERATOR LIFECYCLE MANAGEMENT
- 27. OPERATOR SDK KUBERNETES OPERATOR + = + OPERATOR LIFECYCLE MANAGER + USER “createnew operator” scaffolding custom logic metadata package “make available to” “list packages” “subscribe to channel” subscriptionnamespaceoperator instance managed application “Create application” SERVICE INSTANTIATION PUBLISHER ADMINISTRATOR + 27 AUTHOR
- 28. 28 Use Operators Today OperatorHub.iois a home for the Kubernetes community to share Operators. Find an existing Operator or list your own today.
- 29. 29 Red Hat Products ISVPartners Community TYPES OF OPERATORS OPERATOR HUB Operator Hub - Allows administrators to selectively make operators available from curated sources to users in the cluster.
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- 31. 31 Easy self serviceof Operator-backed Services Reduce friction for deploying operator backed applications ● Rich UI for creating and mutating the app instances
- 32. 32 ...and many more OPERATORSACROSS THE INDUSTRY
- 33. 33 Operator Maturity Model PhaseI Phase II Phase III Phase IV Phase V Basic Install Automated application provisioning and configuration management Seamless Upgrades Patch and minor version upgrades supported Full Lifecycle App lifecycle, storage lifecycle (backup, failure recovery) Deep Insights Metrics, alerts, log processing and workload analysis Auto Pilot Horizontal/vertical scaling, auto config tuning, abnormal detection, scheduling tuning
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- 35. Thank you linkedin.com/showcase/red-hat-developer youtube- bit.ly/2YRIWTk facebook.com/redhatdeveloperprogram twitter.com/rhdevelopers 35 Josh Wood joshix@redhat.com @joshixisjosh9 joshix.com