A Job creates one or more pods and will continue to retry execution of the Pods until a specified number of them successfully terminate. As pods successfully complete, the Job tracks the successful completions. When the specified number of successful completions is reached, the job is complete.
Continue reading “[Kubernetes] Jobs & CronJobs”Tag Archives: Kubernetes
[Kubernetes] Configurations
Kubernetes provides many ways to configure pods and containers.
- Environment variables
- Config maps
- Secrets
- Security context
- Resource requirements
- Service accounts
Kubernetes – CKAD Tips
Certified Kubernetes Application Developer (CKAD)
CKAD is an online tests with problems to be solved by a command line tool. Here are the tips of the test.
Continue reading “Kubernetes – CKAD Tips”[Kubernetes] Services
A Service is an abstraction which defines a logical set of Pods and a policy by which to access them (sometimes this pattern is called a micro-service).
Continue reading “[Kubernetes] Services”[Kubernetes] Deployments
A Deployment provides declarative updates for Pods and ReplicaSets.
- A deployment defines the desired state for replica pods.
- The cluster constantly maintains the desired state by creating, removing, and modifying replica pods.
[Kubernetes] Pods
Pods are the smallest deployable units of computing that you can create and manage in Kubernetes.
- A Pod consists of one or more containers and resources shared by those containers.
[Kubernetes] Basics
Kubernetes coordinates a highly available cluster of computers that are connected to work as a single unit. Kubernetes automates the distribution and scheduling of application containers across a cluster in an efficient way.
- Service discovery and load balancing
- Storage orchestration
- Automated rollouts and rollbacks
- Self-healing
- Secret and configuration management
Install Kubernetes – Ubuntu Focal 20.04
- Distribution: Ubuntu Focal 20.04 (LTS)
You need to set up the cluster: Master node and Worker nodes.
- Master: A Master a system that control API calls for the pods, controllers, services, nodes and other components of a Kubernetes cluster are executed.
- Worker: A Worker is a system that provides the run-time environments for the containers. A set of container pods can span multiple nodes.
