/var/log not working in containers

[jampy]

In my Debian 8 (Jessie) containers the /var/log socket doesn't seem to work.

$ModLoad imuxsock

is enabled in rsyslog.conf

I can also see that the daemon is listening on that socket:

lsof /dev/log
COMMAND   PID USER   FD   TYPE             DEVICE SIZE/OFF   NODE NAME
rsyslogd 1953 root    3u  unix 0xffff88107209c500      0t0 678611 /dev/log

However, in the /var/log/* files I just see the start/stop messages of rsyslog itself, nothing else.

Apparently something is preventing access to /dev/log:

# strace logger hello
...
socket(PF_LOCAL, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 3
connect(3, {sa_family=AF_LOCAL, sun_path="/dev/log"}, 110) = -1 ECONNREFUSED (Connection refused)
close(3)                                = 0
close(1)                                = 0
close(2)                                = 0
exit_group(0)                           = ?
+++ exited with 0 +++

In VMs (still Debian Jessie) everything is working fine.

What could be the problem!?

(Proxmox VE 3.4)

 

[jampy]

Ok, I understand now that the problem is that the container uses a NFS shared storage.

/dev is a normal directory and thus also on the NFS (host-)mount.

rsyslog apparently can't create a UNIX socket on that (and so falls back to a named pipe..)

# ls -al /dev/log
prw-rw-rw- 1 root root 0 Jul  9 09:21 /dev/log

Does this mean I can't use UNIX sockets in containers?

Note this is a HA-managed container so shared storage is a must..

 

[jampy]

Seems to be related to this bug: https://bugzilla.redhat.com/show_bug.cgi?id=1235231