Weekly Kubernetes Community Hangout Notes - March 27 2015
Every week the Kubernetes contributing community meet virtually over Google Hangouts. We want anyone who's interested to know what's discussed in this forum.
Agenda:
- Andy - demo remote execution and port forwarding
- Quinton - Cluster federation - Postponed
- Clayton - UI code sharing and collaboration around Kubernetes
Notes from meeting:
1. Andy from RedHat:
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Demo remote execution
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kubectl exec -p $POD -- $CMD
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Makes a connection to the master as proxy, figures out which node the pod is on, proxies connection to kubelet, which does the interesting bit. via nsenter.
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Multiplexed streaming over HTTP using SPDY
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Also interactive mode:
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Assumes first container. Can use -c $CONTAINER to pick a particular one.
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If have gdb pre-installed in container, then can interactively attach it to running process
- backtrace, symbol tbles, print, etc. Most things you can do with gdb.
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Can also with careful flag crafting run rsync over this or set up sshd inside container.
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Some feedback via chat:
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Andy also demoed port forwarding
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nsenter vs. docker exec
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want to inject a binary under control of the host, similar to pre-start hooks
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socat, nsenter, whatever the pre-start hook needs
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would be nice to blog post on this
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version of nginx in wheezy is too old to support needed master-proxy functionality
2. Clayton: where are we wrt a community organization for e.g. kubernetes UI components?
- google-containers-ui IRC channel, mailing list.
- Tim: google-containers prefix is historical, should just do "kubernetes-ui"
- also want to put design resources in, and bower expects its own repo.
- General agreement
3. Brian Grant:
- Testing v1beta3, getting that ready to go in.
- Paul working on changes to commandline stuff.
- Early to mid next week, try to enable v1beta3 by default?
- For any other changes, file issue and CC thockin.
4. General consensus that 30 minutes is better than 60
- Shouldn't artificially try to extend just to fill time.