SIG-Node, with Dawn Chen

Kubernetes Podcast from Google

Sep 26, 2018•23 min•Ep 22•Transcript available on Metacast

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Episode description

Dawn Chen, TL for SIG-Node and the Google Kubernetes Engine node team, joins Craig and Adam this week. She has worked on containers and container schedulers since 2007 - not a typo. We also bring you the news, in part from the echo chamber of Google Cloud Summit in Sydney.

Do you have something cool to share? Some questions? Let us know:

Chatter of the week

News of the week

Links from the interview

Dawn Chen on GitHub
The Borg paper
Process containers (later ‘cgroups’):
- The first submission of containers to the Linux kernel
- Early coverage of process containers
- Paul Menage’s 2007 paper “Adding Generic Process Containers to the Linux Kernel”
- Dawn’s first job: tracking processes. Each job had its own GID - she would use netlink connection tracking to map processes and threads to GIDs, and, using procfs, figure out CPU and memory usage.
- Dawn’s second job: adjusting CPU usage using nice
- Today we just use memcg
- Fake NUMA - cut a machine into big chunks and assign them to groups of processes.
Linux Plumbers Conference
- Tim Hockin’s presentation at the Linux Plumbers Conference in 2011, talking about the work Dawn’s team were doing
lmctfy - Let Me Contain That For You
- In case you don’t get the joke
- It’s like runc and containerd
SIG Node
- Node and lifecycle management
- Application management
- Container runtimes and kubelet
- Node problem detection
- Resource management
- GPU & TPU
- Security isolation
- gVisor and Sandbox Pods
- Logging and monitoring
Was SIG Node the first SIG?
- Tied with SIG API Machinery
How did we get to CRI?
Container RuntimeHandler, so some pods can run with one runtime and some with another