[systemd-devel] network interface down in container

[arnaud gaboury]

On Thu, Apr 30, 2015 at 11:44 AM, Lennart Poettering
<lennart at poettering.net> wrote:
> On Thu, 30.04.15 10:01, arnaud gaboury (arnaud.gaboury at gmail.com) wrote:
>
>> I used to boot the container this way :
>> # systemd-nspawn --network-bridge=br0 -bD /path_to/my_container
>>
>> Is this correct?
>
> Looks fine.
>
>>
>>
>>           *****************
>> Now on the container side:
>>
>> Nothing configured. NetworkManager enabled, systemd-networkd enabled
>> and started.
>
> NM doesn't really support being run in a container.

I want to disable it to avoid any potential conflict.

systemctl mask NetworkManager
systemctl mask NetworkManager-dispatcher

But when rebooting, it is enabled again. I guess I must write a custom
service file to mask it ?

>
>> -------------------------------
>> $ ip a
>> 2: host0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group
>> default qlen 1000
>>     link/ether 0e:7f:c3:fb:25:b1 brd ff:ff:ff:ff:ff:ff
>> -------------------------------------
>> host0 is down
>
> Please check what "networkctl status -a" in the container shows. It
> should tell you whether networkd is configured to do anything.
<E2><97><8F> 1: lo
   Link File: n/a
Network File: n/a
        Type: loopback
       State: carrier (unmanaged)
         MTU: 65536
     Address: 127.0.0.1
              ::1

<E2><97><8F> 2: host0
   Link File: n/a
Network File: n/a
        Type: ether
       State: off (unmanaged)
  HW Address: 0e:7f:c3:fb:25:b1
         MTU: 1500

Not really sain

>
> Also, what does "journalctl -u systemd-networkd -n 200" show in the
> container?
Apr 30 12:10:55 poppy systemd[1]: Starting Network Service...
Apr 30 12:10:56 poppy systemd-networkd[249]: Enumeration completed
Apr 30 12:10:56 poppy systemd[1]: Started Network Service.

sounds OK.

As said, the only error when booting container is:

Apr 27 13:18:01 poppy firewalld[35]: 2015-04-27 13:18:01 ERROR:
ebtables not usable, disabling ethernet bridge firewall.
Apr 27 13:18:01 poppy firewalld[35]: 2015-04-27 13:18:01 FATAL ERROR:
No IPv4 and IPv6 firewall.
Apr 27 13:18:01 poppy firewalld[35]: 2015-04-27 13:18:01 ERROR:
Raising SystemExit in run_server
Apr 27 13:18:01 poppy NetworkManager[67]: <info>  NetworkManager
(version 1.0.0-8.fc22) is starting...
Apr 27 13:18:01 poppy NetworkManager[67]: <info>  Read config:
/etc/NetworkManager/NetworkManager.conf
Apr 27 13:18:01 poppy NetworkManager[67]: <info>  WEXT support is enabled
Apr 27 13:18:01 poppy NetworkManager[67]: <warn>  Could not get
hostname: failed to read /etc/sysconfig/network
Apr 27 13:18:01 poppy NetworkManager[67]: <info>  Acquired D-Bus
service com.redhat.ifcfgrh1
Apr 27 13:18:01 poppy NetworkManager[67]: <info>  Loaded plugin
ifcfg-rh: (c) 2007 - 2013 Red Hat, Inc.  To report bugs please use the
NetworkManager mailing list.
Apr 27 13:18:01 poppy NetworkManager[67]: <info>  Loaded plugin
keyfile: (c) 2007 - 2013 Red Hat, Inc.  To report bugs please use the
NetworkManager mailing list.
Apr 27 13:18:01 poppy NetworkManager[67]: <info>  parsing
/etc/sysconfig/network-scripts/ifcfg-lo ...
Apr 27 13:18:01 poppy NetworkManager[67]: <info>  monitoring kernel
firmware directory '/lib/firmware'.
Apr 27 13:18:01 poppy NetworkManager[67]: <info>  WiFi enabled by
radio killswitch; enabled by state file
Apr 27 13:18:01 poppy NetworkManager[67]: <info>  WWAN enabled by
radio killswitch; enabled by state file
Apr 27 13:18:01 poppy NetworkManager[67]: <info>  WiMAX enabled by
radio killswitch; enabled by state file
Apr 27 13:18:01 poppy NetworkManager[67]: <info>  Networking is
enabled by state file
Apr 27 13:18:01 poppy NetworkManager[67]: <info>  (br0): link connected
Apr 27 13:18:01 poppy NetworkManager[67]: <info>  (br0): carrier is ON
Apr 27 13:18:01 poppy NetworkManager[67]: <info>  (br0): new Bridge
device (driver: 'bridge' ifindex: 3)
Apr 27 13:18:01 poppy NetworkManager[67]: <info>  (br0): exported as
/org/freedesktop/NetworkManager/Devices/0


Not sure if it has any impact

> Lennart
>
> --
> Lennart Poettering, Red Hat



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