Linux Control Groups and Namespaces Workshop

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Linux Control Groups and Namespaces Workshop

Control Groups
Control Groups provide a mechanism for aggregating / partitioning sets of tasks, and all their future children, into hierarchical groups with specialized behaviour.

Namespaces
Namespaces are a feature of the Linux kernel that isolate and virtualize system resources of a collection of processes. Examples of resources that can be virtualized include
. process IDs
. hostnames
. user IDs
. network access
. interprocess communication, and filesystems. Namespaces are a fundamental aspect of containers on Linux.

Goals of the Workshop

understand
. cgroup v2
. namespace
. filesystem interface
. sysctl tweaks

write 'C' program to
. create isolated environments
. launch programs
. collect metrics
. calculate 'kernel OOM score'

container
. how containers use 'namespace' and 'cgroups'
. code reading
. blueprint for 'write your own container' (yoco)

code
we will be writing code using system programming languages, C, C++ and Rust.

Note

• This is a "pre-requisite" for the December 9/10th Hackathon.

• This workshop may extend over to Sunday (2017/12/03) morning slot.

• You need to get your laptop with Linux installed.

• This is a "4 hour" long workshop.

All are welcome to this 'free of charge" FOSS workshop.