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…
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…
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…
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.
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…
Kubernetes solves these problems by providing HA, scalability, and zero downtime out of the box. It essentially performs the following functions to provide them: between containers through a domain name.…
In this chapter, we have covered a lot of ground. At this point, you should understand Docker from a hands-on perspective. We started with Docker images, how to use a…
Apart from running your registry in a dedicated Docker server, other cloud and on-premises options exist. Most public cloud providers offer paid online registries and container-hosting solutions that you can…
And that’s it! It is as simple as that! There are other considerations as well since this is too simplistic. You will also have to mount volumes; otherwise, you will…
A Docker registry is a stateless, highly scalable server-side application that stores and lets you distribute Docker images. The registry is open source under the permissive Apache license. It is…
Ronald Herzig