touch-packages team mailing list archive

[James Page <james.page@xxxxxxxxxx>]

why is this bug incomplete? as far as I can see there is sufficient
information to triage this...

Yes - you have to set the mtu on the lxc container interfaces to match
the bridge, otherwise it drops to the lowest MTU of any attached veth.

For now I've patched the config files to set the mtu correctly - but as
soon as you juju add-unit --to lxc:XX it all collapses again.

For OpenStack environments running overlay networks, setting interface
MTU's on hosts is absolutely critical.

** Changed in: juju-core
       Status: Incomplete => New

** Changed in: lxc (Ubuntu)
       Status: Incomplete => New

** Tags added: cts

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to lxc in Ubuntu.
https://bugs.launchpad.net/bugs/1355813

Title:
  LXC containers reset bridge MTU on start/restart

Status in juju-core:
  New
Status in MAAS:
  Incomplete
Status in “lxc” package in Ubuntu:
  New

Bug description:
  Context:

  juju + MAAS deployed OpenStack environment, misc services deployed
  under LXC on the bootstrap node, interfaces configured for jumbo
  frames - note that I had to manually set the LXC container interfaces
  to mtu 9000 before the bridge would do the same.

  Action:

  Reboot one of the containers; MTU on br0 resets from 9000 -> 1500.

  This feels like more of a 'we need a better way to orchestrate MTU
  configuration across different services' so raising tasks for MAAS and
  Juju as well.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: lxc 1.0.5-0ubuntu0.1
  ProcVersionSignature: User Name 3.13.0-24.47-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.3
  Architecture: amd64
  Date: Tue Aug 12 13:26:00 2014
  KernLog:

  SourcePackage: lxc
  UpgradeStatus: No upgrade log present (probably fresh install)
  defaults.conf:
   lxc.network.type = veth
   lxc.network.link = lxcbr0
   lxc.network.flags = up
   lxc.network.hwaddr = 00:16:3e:xx:xx:xx
  lxcsyslog:

To manage notifications about this bug go to:
https://bugs.launchpad.net/juju-core/+bug/1355813/+subscriptions