[B.A.T.M.A.N.] alfred: IPC issues

[B.A.T.M.A.N.] alfred: IPC issues

[Jan Lühr]

Hei folks,

I'm using alfred 2014.0.0 on OpenWRT Barrier Breaker.

Alfred is running:
root@6466b34ffcac:~# ps -w | grep alfred
 1718 root      1100 S    /usr/sbin/alfred -i br-freifunk -b bat0

But cannot be queried using the client:
root@6466b34ffcac:~# alfred -r 94
can't connect to unix socket: Connection refused

What's wrong here?

Configuration is
config 'alfred' 'alfred'
  option interface 'br-freifunk'
  option mode 'server'
  option batmanif 'bat0'
  option start_vis '0'
  option run_facters '0'


Thanks,
Keep smiling
yanosz

Re: [B.A.T.M.A.N.] alfred: IPC issues

[Simon Wunderlich]

Hello Jan,

> Hei folks,
> 
> I'm using alfred 2014.0.0 on OpenWRT Barrier Breaker.
> 
> Alfred is running:
> root@6466b34ffcac:~# ps -w | grep alfred
>  1718 root      1100 S    /usr/sbin/alfred -i br-freifunk -b bat0
> 
> But cannot be queried using the client:
> root@6466b34ffcac:~# alfred -r 94
> can't connect to unix socket: Connection refused
> 
> What's wrong here?
> 
> Configuration is
> config 'alfred' 'alfred'
>   option interface 'br-freifunk'
>   option mode 'server'
>   option batmanif 'bat0'
>   option start_vis '0'
>   option run_facters '0'
> 

I don't see a problem right from your configuration. Can you please check:

 * do you see the socket file /var/run/alfred.sock after starting alfred? 
 * does the same problem happen if you restart alfred or start it manually?

Thank you,
    Simon

Re: [B.A.T.M.A.N.] alfred: IPC issues

[Jan Lühr]

Hello,

thanks for your feedback.

Am 08/07/2014 10:37 AM, schrieb Simon Wunderlich:
> Hello Jan,
> 
>> Hei folks,
>>
>> I'm using alfred 2014.0.0 on OpenWRT Barrier Breaker.
>>
>> Alfred is running:
>> root@6466b34ffcac:~# ps -w | grep alfred
>>  1718 root      1100 S    /usr/sbin/alfred -i br-freifunk -b bat0
>>
>> But cannot be queried using the client:
>> root@6466b34ffcac:~# alfred -r 94
>> can't connect to unix socket: Connection refused
>>
>> What's wrong here?
>>
(...)


> I don't see a problem right from your configuration. Can you please check:
> 
>  * do you see the socket file /var/run/alfred.sock after starting alfred? 

Looks nice..
root@6466b34ffcac:~# ls -lh /var/run/alfred.sock
srwxr-xr-x    1 root     root           0 Aug  6 20:47 /var/run/alfred.sock

>  * does the same problem happen if you restart alfred or start it manually?
/etc/init.d/alfred restart made it disappear

For some reason, this is persistent:
* Before restarting, alfred was unusable after rebooting the machine
* After a restarting once, alfred is usable - even after reboots

Greetu, Jan

Re: [B.A.T.M.A.N.] alfred: IPC issues

[Jan Lühr]

Hello,


Am 08/07/2014 10:37 AM, schrieb Simon Wunderlich:
> Hello Jan,
> 
>> Hei folks,
>>
>> I'm using alfred 2014.0.0 on OpenWRT Barrier Breaker.
>>

I'm not able to reproduce this issue using 2014.3.0.
I'm not certain, whether 2014.3.0 is the cause.

Greetz, Jan

Re: [B.A.T.M.A.N.] alfred: IPC issues

[Matthias Schiffer]

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On 08/07/2014 02:34 PM, Jan Lühr wrote:
> Hello,
> 
> 
> Am 08/07/2014 10:37 AM, schrieb Simon Wunderlich:
>> Hello Jan,
>>
>>> Hei folks,
>>>
>>> I'm using alfred 2014.0.0 on OpenWRT Barrier Breaker.
>>>
> 
> I'm not able to reproduce this issue using 2014.3.0.
> I'm not certain, whether 2014.3.0 is the cause.
> 
> Greetz, Jan
> 

I think 2014.0.0 had an FD leak issue, which could easily cause alfred
to exceed the process limit (which is 1024 FDs on OpenWrt) within a few
hours. As accept() needs to open a new FD, this would explain the issue.

Matthias


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