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Hitoshi Harada
umitanuki

Jun 22, 2016
@umitanuki
  • @umitanuki cbce101
    Add ToStream() interface that allows to write in-memory
Apr 16, 2016
@umitanuki
Docker container is unremovable (docker-in-docker, aufs)
Apr 16, 2016
umitanuki commented on issue docker/docker#21893
@umitanuki

So we have been sound for the last few days, because we stopped using docker-in-docker and run multiple daemons on host. Seems like something is br…

Apr 11, 2016
umitanuki commented on issue docker/docker#21893
@umitanuki

Of course the first time we do docker rm -f then process is gone but the container remains unremovable. Then after that docker rm succeeds but the …

Apr 10, 2016
umitanuki commented on issue docker/docker#21893
@umitanuki

So aufs+did is suspicious to you? Do you have any other recommendation of storage driver combination?

Apr 10, 2016
umitanuki commented on issue docker/docker#21893
@umitanuki

The inspect above is from the container in the inner daemon. The outer mounts something like /var/multi/box-0/lib/docker for the inner's /var/lib/d…

Apr 9, 2016
umitanuki commented on issue docker/docker#21893
@umitanuki

From the beginning it is on volume. /var/lib/docker is on the host physical disk (yes it's bare metals) and never on layered filesystems. In fact, …

Apr 9, 2016
umitanuki commented on issue docker/docker#21893
@umitanuki

Hit another one, attaching the daemon log. {"log":"time=\"2016-04-09T01:46:26.023389092Z\" level=info msg=\"Graph migration to content-addressabili…

Apr 8, 2016
umitanuki commented on issue docker/docker#21893
@umitanuki

We are seeing this issue more frequently when the host memory usage is high, if it helps understand it.

Apr 8, 2016
umitanuki commented on issue docker/docker#21893
@umitanuki

And once it happens, we cannot even remove the docker-in-docker daemon, and the same symptom happens for the daemon container, resulting in the par…

Apr 8, 2016
umitanuki commented on issue docker/docker#21893
@umitanuki

OS is Ubuntu 14:04 but kernel is 3.19-0.51 or 3.19-0-56 (happens in both) $ uname -a Linux slk80-5 3.19.0-56-generic #62~14.04.1-Ubuntu SMP Fri Mar…

Apr 8, 2016
@umitanuki
Docker container is unremovable (docker-in-docker, aufs)
Feb 12, 2016
umitanuki commented on issue docker/docker#20223
@umitanuki

Still not sure if it's true... The inner daemon has to be given the vxlan address, but it's not reachable from another host because the address has…

Feb 12, 2016
umitanuki commented on issue docker/docker#20223
@umitanuki

I'm a bit confused with overlay network now... Should it also work with dind?

Feb 12, 2016
umitanuki commented on issue docker/docker#20223
@umitanuki

Sorry for noise. It seems aufs works in docker-in-docker.

Feb 12, 2016
umitanuki commented on issue docker/docker#20223
@umitanuki

@cpuguy83 Having a second look at docker-in-docker, it actually looks, except it uses vfs. Is there any way to use device mapper?

Feb 11, 2016
umitanuki commented on issue docker/docker#20223
@umitanuki

I'm not sure how docker-in-docker can handle the scenario... sure you can run multiple dockers but you need many hacks to mimic the real environmen…

Feb 11, 2016
umitanuki commented on issue docker/docker#20223
@umitanuki

Bottom line, I would suggest to explicitly state it somewhere in the doc, unless I missed it, rather than not explicitly support it.

Feb 11, 2016
umitanuki commented on issue docker/docker#20223
@umitanuki

One of the potential benefits I can think of by having multiple daemons on a host is: you can test machine failure or docker daemon failure in one …

Feb 11, 2016
umitanuki commented on issue docker/docker#20223
@umitanuki

Without having much idea of UCP, I'm not sure how it solves my problem (UCP looks like commercial GUI on top of OSS, typical OSS business model, bu…

Feb 11, 2016
umitanuki commented on issue docker/docker#20223
@umitanuki

Those are true, fair enough, but I still have problems around container name conflict and human mistakes to delete someone else's containers/images…

Feb 11, 2016
umitanuki commented on issue docker/docker#20223
@umitanuki

Ok, that's a shame. We've been running multiple daemons successfully so far by disabling iptables (and maintaining masquerade separately), until we…

Feb 11, 2016
@umitanuki
Overlay network doesn't work with multiple daemons in the same host
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