How deeply does Kubernetes in Action, Second Edition cover inter-process communication namespace?

Defines IPC resource isolation and places it among namespace types, but stops short of implementation commands or kernel internals.

Inter-process communication namespace

As explained in Kubernetes in Action, Second Edition

An IPC namespace is a Linux isolation scope that separates a process's inter-process communication resources from those of processes outside the namespace.

An IPC namespace isolates inter-process communication resources so processes see and use resources in their own namespace rather than those belonging to processes outside it. These resources include message queues and shared memory. section 2.3.1

A process belongs to one namespace of each resource type, so IPC isolation works alongside separate mount, process ID, network, UTS, user, time, and cgroup namespaces. Namespaces can also be shared selectively. section 2.3.1

IPC inside a pod

Containers in the same Kubernetes pod share an IPC namespace, allowing their processes to communicate through usual IPC mechanisms. They can also share the network and UTS namespaces, while their mount namespaces remain separate. section 5.1.1

How Kubernetes in Action, Second Edition covers it

Cover of Kubernetes in Action, Second Edition

liveBook manning.com

Read Kubernetes in Action, Second Edition on liveBook Get the book at manning.com

Also explained in

liveBook manning.com

Podman in Action: Secure, rootless containers for Kubernetes, microservices, and moreAn IPC namespace is a Linux namespace that isolates System V IPC objects, POSIX message queues, and the /dev/shm shared-memory filesystem.

Compare how 2 books explain inter-process communication namespace →

Related concepts

linux namespacekind of · A Linux namespace is a kernel mechanism that gives processes isolated views of selected system resources, such as processes, networks, or filesystem mounts.
podused by · A Kubernetes Pod is the smallest deployable unit in Kubernetes, grouping one or more co-located containers that share networking and other resources.
interprocess communicationpart of · Interprocess communication is the exchange of data, information, or coordination signals between independently executing processes.

This explainer was generated by Manning's knowledge graph from the text of Kubernetes in Action, Second Edition. The section links point to the parts of the book it draws on.