DNS failure could do this Asterisk used to get stuck in a symmetric DNS request wait state which meant everything ground to a halt as it waited for a reply while DNS timed out.
The recommended option was either ip only or a DNS proxy that failed fast this letting asterisk continue Cheers Duncan > On 27/05/2015, at 11:55 pm, Stefan Viljoen <viljo...@verishare.co.za> wrote: > > Hi all > > We've had a very strange failure on an Asterisk 1.8 install that has been > running for about a year at a customer site. > > The physical hardware is fine, all other services off the Centos 6.5 server > are running. Only Asterisk is not working... > > The first symptom was that no calls can be made over the SIP phones used > with it, and no calls could be received over the SIP trunk connected to it. > > I checked and noted that > > sip show peers > > in the CLI would either do nothing (e. g. just show asterisk*cli> again, > with no response) or it would return only this: > > asterisk*CLI> sip show peers > Name/username Host Dyn > Forcerport ACL Port Status > asterisk*CLI> > > A module show like sip also does literally nothing, just > > asterisk*cli> module show like sip > asterisk*CLI> > > Soon after this, I lost the capacity to get any response if I do an asterisk > -r on the commandline - it would just hang indefintely. > > Did a reboot, and then, I couldnt start asterisk at all - entering > > # asterisk > > would also just hang. > > So, I recompiled asterisk from source and reinstalled the executable and all > the module files. Still the same. > > I happened to have an older asterisk executable from a few months before > laying around and sha256summed it - and there was a difference in the > checksum vs. the non-working asterisk binary - BUT it turned out that the > newly recompiled asterisk binary has the SAME SHA256 checksum as the > non-working asterisk binary. > > System seems fine otherwise, nothing relevant in /var/log/messages or dmesg > indicating a hardware failure. /var/log/asterisk/messages also contains no > strange warnings or errors. > > Anybody got any idea why I cannot resuscitate my Asterisk install, even > after recompiling it from scratch from source? Why would asterisk die like > this in the first place? > > Thanks > > > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > New to Asterisk? Join us for a live introductory webinar every Thurs: > http://www.asterisk.org/hello > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users