OpenShift Day to Day Tasks:

1. Cluster Installation and Setup:

Install OpenShift cluster.
Configure cluster networking.
Set up storage classes.
Define persistent storage for applications.
Configure authentication and authorization.

Node Management:

Add new nodes to the cluster.
Remove nodes from the cluster.
Monitor node health and capacity.
Scale node resources based on workload.

Application Deployment:

Deploy applications using YAML manifests.
Manage application deployments using Deployments or StatefulSets.
Scale application pods based on demand.
Rollback application deployments when needed.

Monitoring and Logging:

Set up cluster-wide monitoring using Prometheus.
Configure alerting rules for critical events.
Monitor cluster and application logs using EFK stack.
Investigate and troubleshoot issues using logs.

Security Management:

Implement network policies for pod communication.
Monitor and manage security contexts for pods.
Regularly update and patch OpenShift components.
Review and apply security best practices.

Backup and Restore:

Set up regular backups for etcd and other critical components.
Test backup and restore procedures.
Define disaster recovery plans.

Resource Quotas and Limits:

Define resource quotas for projects.
Enforce resource limits for individual pods.
Monitor resource utilization and adjust quotas as needed.

User Management:

Add and remove users from the cluster.
Assign roles and permissions to users.
Manage user access tokens and certificates.

Cluster Upgrades:

Monitor OpenShift updates and patches.
Plan and execute cluster upgrades.
Verify cluster stability post-upgrade.

Registry Management:

Configure and manage internal container image registries.
Secure the registry with authentication and authorization.
Monitor image usage and clean up unused images.

Network Configuration:

Troubleshoot networking issues.
Configure Ingress controllers.
Implement and manage Service Mesh.

Backup and Restore:

Set up regular backups for etcd and other critical components.
Test backup and restore procedures.
Define disaster recovery plans.

Resource Monitoring:

Monitor cluster resource utilization.
Set up custom monitoring dashboards.
Identify and address performance bottlenecks.

Node and Pod Autoscaling:

Implement Horizontal Pod Autoscaling (HPA).
Configure Cluster Autoscaler for node scaling.
Fine-tune autoscaling parameters based on workload patterns.

Cluster Policy Management:

Define and enforce cluster policies.
Implement PodSecurityPolicy.
Audit and remediate policy violations.

Secrets and ConfigMaps Management:

Manage sensitive information using Secrets.
Configure ConfigMaps for application configuration.
Rotate and update secrets regularly.

CI/CD Integration:

Integrate OpenShift with CI/CD tools.
Automate application deployment pipelines.
Monitor and optimize CI/CD workflows.

Storage Management:

Provision and manage storage resources.
Troubleshoot storage-related issues.
Implement backup and recovery for persistent volumes.

Service Discovery:

Configure and manage service discovery.
Monitor and troubleshoot service communication.
Implement DNS policies for service resolution.

Pod Lifecycle Management:

Monitor pod lifecycles.
Troubleshoot pod startup and termination issues.
Implement readiness and liveness probes.

Cluster Metrics and Logging:

Configure and manage cluster metrics.
Monitor and troubleshoot metric collection.
Set up logging for critical cluster components.

Pod Security Policies:

Define and enforce pod security policies.
Regularly review and update security policies.
Audit and remediate policy violations.

Cluster Networking:

Configure network policies.
Troubleshoot network connectivity issues.
Implement and manage network segmentation.

Resource Optimization:

Identify and reclaim unused resources.
Optimize resource allocation for applications.
Implement resource quotas based on project requirements.

DNS Configuration:

Configure and manage DNS settings.
Troubleshoot DNS resolution issues.
Implement custom DNS policies.