Ensuring pod reliability – Container Orchestration with Kubernetes
Ronald Herzig
We talked about health checks in Chapter 4 , Creating and Managing Container Images, and I also mentioned that you should not use them on the Docker level and instead…
Cloud Certifications
Troubleshooting pods – Container Orchestration with Kubernetes-2
We’ve discussed troubleshooting running containers, but what if the containers fail to start for some reason? Let’s look at the following example: $ kubectl run nginx-1 –image=nginx-1 Now, let’s try…
Cloud Certifications
Exams of Cloud
Kubernetes architecture
Managing Docker images
Other public registries
Troubleshooting pods – Container Orchestration with Kubernetes-1
Similar to how we can browse logs from a container using docker logs, we can browse logs from a container within a Kubernetes pod using the kubectl logs command. If…
Cloud Certifications
Kubernetes architecture
Managing Docker images
Other public registries
Troubleshooting pods
Using port forwarding – Container Orchestration with Kubernetes
Important tips Set imagePullPolicy to IfNotPresent unless you have a strong reason for using Always or Never. This will ensure that your containers boot up quickly and you don’t download…
Cloud Certifications
Managing Docker images
Other public registries
Troubleshooting pods
Understanding Kubernetes pods
Understanding Kubernetes pods – Container Orchestration with Kubernetes-2
Let’s understand the file first. The file contains the following: There are other settings on the pod manifest, but we will explore these as and when we progress.
Building our first container
Cloud Certifications
Other public registries
Troubleshooting pods
Understanding Kubernetes pods
Understanding Kubernetes pods – Container Orchestration with Kubernetes-1
Kubernetes pods are the basic building blocks of a Kubernetes application. A pod contains one or more containers, and all containers within a pod are always scheduled in the same…
Building our first container
Cloud Certifications
Troubleshooting pods
Understanding Kubernetes pods
Installing KinD – Container Orchestration with Kubernetes
KinD allows you to run a multi-node Kubernetes cluster on a single server that runs Docker. We understand that a multi-node Kubernetes cluster requires multiple machines, but how can we…
Installing Minikube – Container Orchestration with Kubernetes
We will install Minikube in the same Linux machine we used to install Docker in Chapter 3, Containerization with Docker. So, if you haven’t done that, please go to Chapter…
Kubernetes architecture – Container Orchestration with Kubernetes-2
Well, that’s a lot of moving parts, but the good news is that tools are available to set that up for you, and provisioning a Kubernetes cluster is very simple.…
Building our first container
Cloud Certifications
Exams of Cloud
Managing Docker images
Troubleshooting pods
Kubernetes architecture – Container Orchestration with Kubernetes-1
Kubernetes is made of a cluster of nodes. There are two possible roles for nodes in Kubernetes – control plane nodes and worker nodes. The control plane nodes control the…