[lxc-users] Facing container freezes again

[Lukas Schulze]

A month ago I solved the problem.
I installed the package inetutils-syslogd to log system events. This
package seems to crash silently with lxc, but keeps running.
The services still try to send their logs to inetutils-syslogd and are
waiting for a response. Because logs are send synchronously the waiting for
a response is blocking.
In many cases the applications do not timeout these requests which lead to
non-responding services and a supposed freeze of the VM.

I replaced the package inetutils-syslogd with rsyslogd and now it's working
like a charm.

Best regards,
Lukas

On Tue, Nov 11, 2014 at 10:27 PM, Lukas Schulze <lspcity at gmail.com> wrote:

> HISTORY:
>
> After increasing the limits for opened files on the host and containers
> the number of container freezes decreased, but still occurs.
> The container don't react on lxc-console or ssh sessions and some services
> in the container stop working, but other still work. Delivering a web page
> does still work, but receiving an e-mail with postfix no longer works.
>
> It is really frustrating to don't get lxc working without freezes.
>
> My host system and containers are still up-to-date debians.
>
> Any system information can be found on
> https://lists.linuxcontainers.org/pipermail/lxc-users/2014-July/007383.html
> and
> https://lists.linuxcontainers.org/pipermail/lxc-users/2014-September/007762.html
>
>
> CURRENT PROBLEM:
>
> A few weeks ago a container stopped working again and I still had an
> opened ssh session.
> I was able to start new processes and even restart the service ssh, but I
> could not open a second ssh session to this container.
> When I restarted the network service my opened session closed and the
> container was not responding anymore. So I had to restart the container.
>
> The current freezes seems to correlate with the network interfaces. But
> till now I couldn't figure out any problems.
>
>
> Host /etc/network/interfaces
> ~~~~~~~~~~~~~~~~~~
> ...
> auto br0
> iface br0 inet static
>   address 10.1.1.254
>   netmask 255.255.255.0
>   bridge_ports none
>
>
> Client config
> ~~~~~~~~~~~~~~~~~~
> lxc.network.type = veth
> lxc.network.name = veth12
> lxc.network.flags = up
> lxc.network.link = br0
> lxc.network.veth.pair = veth12-sid
> lxc.network.ipv4 = 10.1.1.12/24
> lxc.network.ipv4.gateway = 10.1.1.254
>
>
> On https://wiki.debian.org/LXC/SimpleBridge they use a lot more
> parameters.
> What are your configuration options for virtual networking and bridges?
> Is my configuration correct? Am I missing something?
>
> Are there any other good tutorials for configuring virtual networks for
> lxc?
>
>
> Thank you for your help.
>
> Best regards,
> Lukas
>
>
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