[mythtv-users] Backend won't start - ipv6 issue?

Yan Seiner yan at seiner.com
Sun Jan 19 14:50:40 UTC 2014


On 01/19/2014 06:44 AM, Yan Seiner wrote:
> My servers reboot automatically at 1AM on Sunday morning.  This has 
> always gone off without a hitch until this morning when the backend 
> refused to start.
>
> These seem to be the pertinent lines from mythbackend.log - notice the 
> Error 9 on the ipv6 interface:
>
> Jan 19 06:34:13 NewMoon mythbackend: mythbackend[16639]: I CoreContext 
> serverpool.cpp:399 (listen) Listening on TCP 127.0.0.1:6544
> Jan 19 06:34:13 NewMoon mythbackend: mythbackend[16639]: I CoreContext 
> serverpool.cpp:399 (listen) Listening on TCP 192.168.128.2:6544
> Jan 19 06:34:13 NewMoon mythbackend: mythbackend[16639]: I CoreContext 
> serverpool.cpp:399 (listen) Listening on TCP [::1]:6544
> Jan 19 06:34:13 NewMoon mythbackend: mythbackend[16639]: E CoreContext 
> serverpool.cpp:411 (listen) Failed listening on TCP 
> [fe80::20a:cdff:fe17:f4bb%bond0]:6544 - Error 9: The address is not 
> available
> Jan 19 06:34:13 NewMoon mythbackend: mythbackend[16639]: E CoreContext 
> mediaserver.cpp:86 (Init) MediaServer::HttpServer Create Error
> Jan 19 06:34:13 NewMoon mythbackend: mythbackend[16639]: I CoreContext 
> serverpool.cpp:399 (listen) Listening on TCP 127.0.0.1:6543
> Jan 19 06:34:13 NewMoon mythbackend: mythbackend[16639]: I CoreContext 
> serverpool.cpp:399 (listen) Listening on TCP 192.168.128.2:6543
> Jan 19 06:34:13 NewMoon mythbackend: mythbackend[16639]: I CoreContext 
> serverpool.cpp:399 (listen) Listening on TCP [::1]:6543
> Jan 19 06:34:13 NewMoon mythbackend: mythbackend[16639]: E CoreContext 
> serverpool.cpp:411 (listen) Failed listening on TCP 
> [fe80::20a:cdff:fe17:f4bb%bond0]:6543 - Error 9: The address is not 
> available
> Jan 19 06:34:13 NewMoon mythbackend: mythbackend[16639]: C CoreContext 
> main_helpers.cpp:681 (run_backend) Backend exiting, MainServer 
> initialization error.
>
> But ifconfig tells me the interface is available:
>
> root at NewMoon:/var/log/mythtv# ifconfig
> bond0     Link encap:Ethernet  HWaddr 00:0a:cd:17:f4:bb
>           inet addr:192.168.128.2  Bcast:192.168.128.255 
> Mask:255.255.255.0
>           inet6 addr: fe80::20a:cdff:fe17:f4bb/64 Scope:Link
>           UP BROADCAST RUNNING MASTER MULTICAST  MTU:1500 Metric:1
>           RX packets:233657 errors:2 dropped:0 overruns:2 frame:0
>           TX packets:198662 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:131014818 (131.0 MB)  TX bytes:107982506 (107.9 MB)
>
> and it's unchanged for weeks....
>
> Any ideas why this morning it would fail?
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>
For now I've disabled ipv6 (since I don't use it anyway) but I'd still 
like to know why the backend failed to start....

For posterity, here's how you disable ipv6:

echo net.ipv6.conf.all.disable_ipv6 = 1 > /etc/sysctl.d/01-disable-ipv6.conf
service procps start
service mythtv-backend start




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