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network access unavailable inside container with libcontainer for RHEL 6 #4668

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lsm5 opened this issue Mar 14, 2014 · 6 comments · Fixed by #5115
Closed

network access unavailable inside container with libcontainer for RHEL 6 #4668

lsm5 opened this issue Mar 14, 2014 · 6 comments · Fixed by #5115

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@lsm5
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lsm5 commented Mar 14, 2014

libcontainer doesn't seem to work well for RHEL 6 based systems. Need to revert to lxc on them to access network inside container. https://github.com/lsm5/docker-io/blob/master/docker-0.9-el6-lxc.patch
@lsm5
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lsm5 commented Mar 14, 2014

/cc @maxamillion

@maxamillion
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#4772

@maxamillion maxamillion mentioned this issue Mar 19, 2014
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@crosbymichael
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Do we know why it is failing? I'm guessing the netlink calls on the rhel kernel.

@alexlarsson
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It seems a bit hacky to just revert to lxc. libcontainer should be able to work as well (or better) as lxc, as it uses essentially the same things.

@maxamillion
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It fails, it provides no networking. I didn't know enough about libcontainer (I'm just a packager in docker space, have little exposure to the code base thus far) so I reverted to what worked. If libcontainer is meant to function on RHEL6 then that's likely a separate issue all together.

@yawn
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yawn commented Mar 27, 2014

This is probably the same issue as #4711 - the same issue also contains a (somewhat messy) workaround

alexlarsson added a commit to alexlarsson/docker that referenced this issue Apr 9, 2014
@alexlarsson
Fix libcontainer network support on rhel6
59c1b28 
It seems that netlink in older kernels, including RHEL6, does not
support RTM_SETLINK with IFLA_MASTER. It just silently ignores it, reporting
no error, causing netlink.NetworkSetMaster() to not do anything yet
return no error.

We fix this by introducing and using AddToBridge() in a very similar manner
to CreateBridge(), which use the old ioctls directly.

This fixes moby#4668

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
@alexlarsson alexlarsson mentioned this issue Apr 9, 2014
Merged
unclejack pushed a commit to unclejack/moby that referenced this issue Apr 15, 2014
@alexlarsson @unclejack
Fix libcontainer network support on rhel6
8d52a3f 
It seems that netlink in older kernels, including RHEL6, does not
support RTM_SETLINK with IFLA_MASTER. It just silently ignores it, reporting
no error, causing netlink.NetworkSetMaster() to not do anything yet
return no error.

We fix this by introducing and using AddToBridge() in a very similar manner
to CreateBridge(), which use the old ioctls directly.

This fixes moby#4668

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
crosbymichael pushed a commit to docker-archive/libcontainer that referenced this issue Jun 10, 2014
@alexlarsson
Fix libcontainer network support on rhel6
c2644a1 
It seems that netlink in older kernels, including RHEL6, does not
support RTM_SETLINK with IFLA_MASTER. It just silently ignores it, reporting
no error, causing netlink.NetworkSetMaster() to not do anything yet
return no error.

We fix this by introducing and using AddToBridge() in a very similar manner
to CreateBridge(), which use the old ioctls directly.

This fixes moby/moby#4668

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
shykes pushed a commit to shykes/docker-dev that referenced this issue Oct 2, 2014
@alexlarsson
Fix libcontainer network support on rhel6
e9d12db 
It seems that netlink in older kernels, including RHEL6, does not
support RTM_SETLINK with IFLA_MASTER. It just silently ignores it, reporting
no error, causing netlink.NetworkSetMaster() to not do anything yet
return no error.

We fix this by introducing and using AddToBridge() in a very similar manner
to CreateBridge(), which use the old ioctls directly.

This fixes moby/moby#4668

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
shykes pushed a commit to shykes/docker-dev that referenced this issue Oct 2, 2014
@alexlarsson
Fix libcontainer network support on rhel6
89b2c9c 
It seems that netlink in older kernels, including RHEL6, does not
support RTM_SETLINK with IFLA_MASTER. It just silently ignores it, reporting
no error, causing netlink.NetworkSetMaster() to not do anything yet
return no error.

We fix this by introducing and using AddToBridge() in a very similar manner
to CreateBridge(), which use the old ioctls directly.

This fixes moby/moby#4668

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
hamo added a commit to hamo/docker that referenced this issue May 20, 2016
@hamo
Fix libnetwork bridge support on rhel6
c36d90b 
moby#4668
It seems that netlink in older kernels, including RHEL6, does not
support RTM_SETLINK with IFLA_MASTER. It just silently ignores it,
reporting
no error, causing netlink.NetworkSetMaster() to not do anything yet
return no error.
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Fix libcontainer network support on rhel6 alexlarsson/docker
5 participants
@yawn @lsm5 @crosbymichael @maxamillion @alexlarsson