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| kata-irc-bot2 | <gmmaharaj> hello team, had a quick Q about kata-deploy with docker. Do we no longer support that use-case? I was going through the README.md (https://github.com/kata-containers/kata-containers/tree/main/tools/packaging/kata-deploy) and I couldn't find the instructions. | 16:03 |
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| devimc | @fidencio ^^ :) | 16:12 |
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| kata-irc-bot2 | <fidencio> @gmmaharaj support that case where, exactly? | 16:55 |
| kata-irc-bot2 | <fidencio> If we're talking about kata-containers 2.x no, no docker support anymore. | 16:55 |
| kata-irc-bot2 | <gmmaharaj> Yes, i was talking about 2.x. I did not realize we no longer support docker anymore. | 16:55 |
| kata-irc-bot2 | <gmmaharaj> 2.x is going to be only k8s? no other container runtime support? | 16:56 |
| kata-irc-bot2 | <fidencio> 2.x is only k8s, yep. | 16:56 |
| kata-irc-bot2 | <fidencio> Would be good if we could have work done on docker / podman to support shimv2 there | 16:57 |
| kata-irc-bot2 | <fidencio> But I don't think it'll easily happen | 16:57 |
| kata-irc-bot2 | <fidencio> @gmmaharaj, OTOH, I'd file an issue describing your use case | 16:57 |
| kata-irc-bot2 | <fidencio> and with enough of those, we can have a better way to re-discuss this | 16:58 |
| kata-irc-bot2 | <gmmaharaj> @fidencio thanks for the info. yes, once I do my due diligence on that, i shall file a issue | 16:58 |
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| kata-irc-bot2 | <fidencio> Thanks! | 16:58 |
| kata-irc-bot2 | <fidencio> We're looking for alternatives, like having it working with nerdctl for instance | 16:59 |
| kata-irc-bot2 | <fidencio> It was discussed Yesterday in the Architecture Committee meeting | 16:59 |
| kata-irc-bot2 | <fidencio> But I don't think it's something that would just work. | 16:59 |
| kata-irc-bot2 | <gmmaharaj> atleast my current use-case was to install kata using kata-deploy to collect logs for a containerd issue without having to use k8s. hence i went down the road of docker | 16:59 |
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| kata-irc-bot2 | <eric.ernst> you can use nerdctl too, @gmmaharaj | 17:57 |
| kata-irc-bot2 | <eric.ernst> i'm curious if that'll work for you. | 17:58 |
| kata-irc-bot2 | <eric.ernst> even though we don't support docker CLI, i was still using the docker install method of kata-deploy in order to get the binaries on my host (lazy way isntead of wget and tar xvf -C / the release binaries :D) | 17:58 |
| kata-irc-bot2 | <gmmaharaj> thanks. yeah, let me fiddle with nerdctl and see how it works. haven't tried playing with it | 18:19 |
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| kata-irc-bot2 | <eric.ernst> devimc you around? | 21:26 |
| kata-irc-bot2 | <eric.ernst> I was looking at max number of containers per pod for testing, and am seeing: `failed to create containerd task: QMP command failed: a used vhost backend has no free memory slots left: unknown` | 21:27 |
| kata-irc-bot2 | <eric.ernst> I assumed this would be handled in the config.toml, and on qemu cmdline i see: `-m 2048M,slots=32,maxmem=8945M`, corresponding to a much larger number of slots than i need (was running with 10 containers) | 21:28 |
| kata-irc-bot2 | <eric.ernst> Do you know if it is a limitation based on machine type? | 21:28 |
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| devimc | @eric.ernst no idea :(, try increasing memory_slots | 21:48 |
| kata-irc-bot2 | <eric.ernst> yeah, that's what I did, up to 32. | 21:48 |
| kata-irc-bot2 | <eric.ernst> seems we're getting capped at ~6 containers | 21:48 |
| kata-irc-bot2 | <eric.ernst> on qemu* | 21:48 |
| devimc | don | 21:48 |
| devimc | don | 21:49 |
| devimc | 't use virtiofsd | 21:49 |
| devimc | maybe that's the problem | 21:49 |
| devimc | try with 9p | 21:49 |
| kata-irc-bot2 | <eric.ernst> I don't think that would impact at all here, right? | 21:52 |
| kata-irc-bot2 | <eric.ernst> the virtiofs share doesn't care about slots | 21:52 |
| kata-irc-bot2 | <eric.ernst> ie, i can start 30 containers if a <7 of them have any memory specified | 21:52 |
| devimc | ohh I see | 21:53 |
| devimc | did you reach out maxmem? | 21:54 |
| kata-irc-bot2 | <eric.ernst> so, qemu *should* know what I wanted, bused on the cmdeline showing slots=32, I'm just curious if there's a limitation and QEMU should be throwing an error and is silently capping. | 21:54 |
| kata-irc-bot2 | <eric.ernst> Nah, each one requests hardly anything. | 21:54 |
| devimc | uhmm ok | 21:54 |
| devimc | have you tried with a bigger number? | 21:55 |
| devimc | ie 64 | 21:55 |
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| kata-irc-bot2 | <eric.ernst> ...Sure...1 sec | 22:09 |
| kata-irc-bot2 | <eric.ernst> devimc -- i think it was indeed memory. It had slots, just not slots with free memory | 22:20 |
| kata-irc-bot2 | <eric.ernst> Good good,we can run pods with 50 containers in it. | 22:20 |
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