https://bugzilla.redhat.com/show_bug.cgi?id=1176302
Bug ID: 1176302 Summary: /var/log/docker incorrectly asserts that kernel 2.6.32* "might be unstable running docker" Product: Fedora EPEL Version: el6 Component: docker-io Assignee: lsm5@redhat.com Reporter: afoxson@gmail.com QA Contact: extras-qa@fedoraproject.org CC: adimania@gmail.com, admiller@redhat.com, golang@lists.fedoraproject.org, hushan.jia@gmail.com, jchaloup@redhat.com, jperrin@centos.org, lsm5@redhat.com, mattdm@redhat.com, mgoldman@redhat.com, miminar@redhat.com, s@shk.io, thrcka@redhat.com, vbatts@redhat.com
Description of problem:
The following warning appears in /var/log/docker:
"WARNING: You are running linux kernel version 2.6.32-504.1.3.el6.x86_64, which might be unstable running docker. Please upgrade your kernel to 3.8.0."
Version-Release number of selected component (if applicable):
docker-io-1.3.2-2.el6.x86_64.rpm
How reproducible:
Consistently.
Steps to Reproduce:
1. Run docker in daemon mode. 2. Review /var/log/docker.
Actual results:
The aforementioned warning appears in /var/log/docker.
Expected results:
The aforementioned warning not appearing in /var/log/docker.
Additional info:
This warning is incorrect as per:
https://github.com/docker/docker/issues/407#issuecomment-43206662
which states:
"Kernels older than 3.8 aren't supported. That means technical support isn't provided and you might run into unexpected behavior, even if it seems like it's working. The only exception is the kernel provided by RHEL6 (2.6.32xxxxxx) which was patched and improved to work properly with Docker."
It seems that an environment variable is available for this situation, as per:
https://github.com/shykes/docker-dev/commit/2c2a655da14f6de9353454673f2a1c9c...
which states:
"set DOCKER_NOWARN_KERNEL_VERSION=1 to disable the warning for RHEL 6.5"
https://bugzilla.redhat.com/show_bug.cgi?id=1176302
Daniel Walsh dwalsh@redhat.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED CC| |dwalsh@redhat.com
--- Comment #1 from Daniel Walsh dwalsh@redhat.com --- Lokesh can you add this environment variable to /etc/sysconfig/docker for rhel6.5
https://bugzilla.redhat.com/show_bug.cgi?id=1176302
--- Comment #3 from Lokesh Mandvekar lsm5@redhat.com --- I've added this to dist-git http://pkgs.fedoraproject.org/cgit/docker-io.git/commit/?h=el6&id=727750...
fedpkg build seems to wait forever though :| . The build should be listed here: http://koji.fedoraproject.org/koji/packageinfo?packageID=17053 . I'll give it another try if I still can't find it there.
https://bugzilla.redhat.com/show_bug.cgi?id=1176302
--- Comment #4 from Daniel Walsh dwalsh@redhat.com --- Lokesh can we close this as fixed?
https://bugzilla.redhat.com/show_bug.cgi?id=1176302
Daniel Walsh dwalsh@redhat.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |CLOSED Resolution|--- |CURRENTRELEASE Last Closed| |2015-07-15 17:24:04
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