[Bug 1355813] Re: LXC containers reset bridge MTU on start/restart
** Tags added: smoosh -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to lxc in Ubuntu. https://bugs.launchpad.net/bugs/1355813 Title: LXC containers reset bridge MTU on start/restart To manage notifications about this bug go to: https://bugs.launchpad.net/juju-core/+bug/1355813/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1355813] Re: LXC containers reset bridge MTU on start/restart
I've re-titled this bug to be about effective interface MTU management across MAAS and Juju; enabling Jumbo frames is something that we should support in our core tooling and is critical for the successful operation of a Neutron based OpenStack Cloud. Combine this with LXC container spread across physical servers and right now this is fiddly and error prone. ** Also affects: juju-core (Ubuntu) Importance: Undecided Status: New ** Changed in: juju-core (Ubuntu) Importance: Undecided = High ** Changed in: juju-core (Ubuntu) Status: New = Triaged ** Changed in: maas Status: Incomplete = New ** Summary changed: - LXC containers reset bridge MTU on start/restart + Interface MTU management across MAAS/juju ** Tags added: landscape -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to juju-core in Ubuntu. https://bugs.launchpad.net/bugs/1355813 Title: Interface MTU management across MAAS/juju To manage notifications about this bug go to: https://bugs.launchpad.net/juju-core/+bug/1355813/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1355813] Re: LXC containers reset bridge MTU on start/restart
@James, the bug was incomplete because the question in comment #2 was never answered until comment #4. So it sounds like something juju needs to do through lxc config - if there is anything sane that you can think of htat lxc can do to help, please let us know. ** Changed in: lxc (Ubuntu) Status: New = Invalid -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to lxc in Ubuntu. https://bugs.launchpad.net/bugs/1355813 Title: LXC containers reset bridge MTU on start/restart To manage notifications about this bug go to: https://bugs.launchpad.net/juju-core/+bug/1355813/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1355813] Re: LXC containers reset bridge MTU on start/restart
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 Server Team, which is subscribed to lxc in Ubuntu. https://bugs.launchpad.net/bugs/1355813 Title: LXC containers reset bridge MTU on start/restart To manage notifications about this bug go to: https://bugs.launchpad.net/juju-core/+bug/1355813/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1355813] Re: LXC containers reset bridge MTU on start/restart
** Tags added: cts-cloud-review ** Tags added: add-unit ** Changed in: juju-core Status: New = Triaged ** Changed in: juju-core Importance: Undecided = Medium ** Tags added: placement ** Tags added: network ** Changed in: juju-core Milestone: None = 1.22 ** Changed in: juju-core Importance: Medium = High -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to lxc in Ubuntu. https://bugs.launchpad.net/bugs/1355813 Title: LXC containers reset bridge MTU on start/restart To manage notifications about this bug go to: https://bugs.launchpad.net/juju-core/+bug/1355813/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1355813] Re: LXC containers reset bridge MTU on start/restart
i've seen reference to you can't really set a bridge mtu, you have to set it for all the containers on the bridge, ie. bridges take the lowest mtu of their interfaces. so instead we have to set all the containers mtu. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to lxc in Ubuntu. https://bugs.launchpad.net/bugs/1355813 Title: LXC containers reset bridge MTU on start/restart To manage notifications about this bug go to: https://bugs.launchpad.net/juju-core/+bug/1355813/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1355813] Re: LXC containers reset bridge MTU on start/restart
** Changed in: lxc (Ubuntu) Status: New = Incomplete -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to lxc in Ubuntu. https://bugs.launchpad.net/bugs/1355813 Title: LXC containers reset bridge MTU on start/restart To manage notifications about this bug go to: https://bugs.launchpad.net/juju-core/+bug/1355813/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1355813] Re: LXC containers reset bridge MTU on start/restart
** Changed in: juju-core Status: New = Incomplete -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to lxc in Ubuntu. https://bugs.launchpad.net/bugs/1355813 Title: LXC containers reset bridge MTU on start/restart To manage notifications about this bug go to: https://bugs.launchpad.net/juju-core/+bug/1355813/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1355813] Re: LXC containers reset bridge MTU on start/restart
** Changed in: maas Status: New = Incomplete -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to lxc in Ubuntu. https://bugs.launchpad.net/bugs/1355813 Title: LXC containers reset bridge MTU on start/restart To manage notifications about this bug go to: https://bugs.launchpad.net/juju-core/+bug/1355813/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1355813] Re: LXC containers reset bridge MTU on start/restart
Hi James, does setting lxc.network.mtu = 9000 in the container configuration file work? Depending on how juju creates the containers, you may be able to simply add that line to the bottom of /etc/lxc/default.conf to get the desired result. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to lxc in Ubuntu. https://bugs.launchpad.net/bugs/1355813 Title: LXC containers reset bridge MTU on start/restart To manage notifications about this bug go to: https://bugs.launchpad.net/juju-core/+bug/1355813/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
