imscp_traffic.service fails to start: main::start: iptables: Chain already exists

DSX · Oct 23rd 2016

Hi,

I found this in the syslog:

Code

Oct 23 00:00:05 websrv systemd[1]: Starting i-MSCP traffic logger...
Oct 23 00:00:06 websrv systemd[1]: Created slice User Slice of debian-spamd.
Oct 23 00:00:06 websrv systemd[1]: Started Session 20 of user debian-spamd.
Oct 23 00:00:06 websrv systemd[1]: Starting User Manager for UID 118...
Oct 23 00:00:06 websrv systemd[3150]: Reached target Sockets.
Oct 23 00:00:06 websrv systemd[3150]: Reached target Paths.
Oct 23 00:00:06 websrv systemd[3150]: Reached target Timers.
Oct 23 00:00:06 websrv systemd[3150]: Reached target Basic System.
Oct 23 00:00:06 websrv systemd[3150]: Reached target Default.
Oct 23 00:00:06 websrv systemd[3150]: Startup finished in 307ms.
Oct 23 00:00:06 websrv systemd[1]: Started User Manager for UID 118.
Oct 23 00:00:07 websrv perl[3105]: [#033[0;31mERROR#033[0m] main::start: iptables: Chain already exists.
Oct 23 00:00:07 websrv systemd[1]: imscp_traffic.service: Main process exited, code=exited, status=1/FAILURE
Oct 23 00:00:07 websrv systemd[1]: Failed to start i-MSCP traffic logger.
Oct 23 00:00:07 websrv systemd[1]: imscp_traffic.service: Unit entered failed state.
Oct 23 00:00:07 websrv systemd[1]: imscp_traffic.service: Failed with result 'exit-code'.
Oct 23 00:00:08 websrv systemd[1]: Stopping User Manager for UID 118...
Oct 23 00:00:08 websrv systemd[3150]: Reached target Shutdown.
Oct 23 00:00:08 websrv systemd[3150]: Stopped target Default.
Oct 23 00:00:08 websrv systemd[3150]: Stopped target Basic System.
Oct 23 00:00:08 websrv systemd[3150]: Stopped target Paths.
Oct 23 00:00:08 websrv systemd[3150]: Stopped target Sockets.
Oct 23 00:00:08 websrv systemd[3150]: Starting Exit the Session...
Oct 23 00:00:08 websrv systemd[3150]: Stopped target Timers.
Oct 23 00:00:08 websrv systemd[3150]: Received SIGRTMIN+24 from PID 3473 (kill).
Oct 23 00:00:08 websrv systemd[1]: Stopped User Manager for UID 118.
Oct 23 00:00:08 websrv systemd[1]: Removed slice User Slice of debian-spamd.

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i-MSCP 1.3.7

Also found this for 22 oktober, the day i upgraded from 1.3.6 to 1.3.7, it's not found before.

Lukas Yoa · Oct 23rd 2016

1. Option:

service imscp_traffic stop

2. Option (if 1. dont work):

Delete the imscp chains in iptables

DSX · Oct 23rd 2016

Option 2 will probably work, but this only happened when upgraded to 1.3.7. Might be a bug.

Lukas Yoa · Oct 23rd 2016

No, i had this a few weeks ago too. I dont remember.. but i mean option 1 works.

Lukas Yoa · Oct 23rd 2016

But yes.. might be bug.. but if its a bug.. i had it a few weeks ago too, while upgrading to some 1.3.x version.

DSX · Oct 23rd 2016

Option 1 isn't working, because the service is not running to begin with.

Option 2 does do the job:

Code

sudo iptables -F IMSCP_OUTPUT
sudo iptables -X IMSCP_OUTPUT
sudo service imscp_traffic start

Still, would love to hear what @Nuxwin has to say about why this happening.

**Nuxwin** · Oct 24th 2016

Before giving any answer, I must investigate.

imscp_traffic.service fails to start: main::start: iptables: Chain already exists

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