Inter-process communication namespace
An inter-process communication namespace is a Linux isolation scope that separates processes' IPC resources, including message queues and shared memory, from those outside it.
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.
- How it is used
- Isolates process communication resources while constructing container environments and coordinating containers within pods.
- How deep it goes
- Defines IPC resource isolation and places it among namespace types, but stops short of implementation commands or kernel internals.
- Examples
- Uses shared IPC between containers in one pod and contrasts it with separate mount namespaces and optionally shared PID namespaces.
- What you can do after
- Evaluate which container processes can communicate through IPC resources based on their namespace and pod membership.
Read how Kubernetes in Action, Second Edition explains inter-process communication namespace →
Podman in Action: Secure, rootless containers for Kubernetes, microservices, and more
An IPC namespace is a Linux namespace that isolates System V IPC objects, POSIX message queues, and the /dev/shm shared-memory filesystem.
- How it is used
- Isolates container IPC resources to prevent cross-container attacks through IPC objects or /dev/shm.
- How deep it goes
- Explains isolated resources, sharing modes, /dev/shm behavior, and SELinux consequences with Podman commands.
- Examples
- Demonstrates private /dev/shm storage and shared visibility through --ipc=container:ipc1.
- What you can do after
- Operate/configure Podman containers with private, shared, or host IPC namespaces and recognize the security trade-offs.
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.
These guides are generated from the text of Manning books by Manning's knowledge graph and link to the sections they draw on. The full books are available on liveBook and at manning.com.