Communicating inside a pod
Containers inside the same pod share the same pod IP address. Usually, it is up to application developers to bundle the container images together and to resolve any possible resource usage conflicts such as port listening. In this section, we will dive into the technical details of how the communication happens among the containers inside the pod and will also highlight the communications that take place beyond the network level.
Linux namespaces and the pause container
Linux namespaces are a feature of the Linux kernel to partition resources for isolation purposes. With namespaces assigned, a set of processes sees one set of resources, while another set of processes sees another set of resources. Namespaces are a major fundamental aspect of modern container technology. It is important for readers to understand this concept in order to know Kubernetes in depth. So, we set forth all the Linux namespaces with explanations. Since Linux kernel version...
