[SR-Users] Kamailio suddenly stopes responding to sip messages

[Uttam Giri]

Thanks Daniel for your response.

Please find attached the "kamctl trap" output file, we were able to
recreate that issue again.
Traffics are not blocked as I can see  messages are received on the
kamailio listen interface by using sngrep tool.
Also, the pike module is not in effect as WITH_ANTIFLOOD is not defined in
the default configuration.

Thanks,
Uttam

On Thu, Nov 19, 2020 at 10:17 AM Daniel-Constantin Mierla <miconda at gmail.com>
wrote:

> Hello,
>
> install gdb and when the kamailio stops responding send here the file
> generated by the next command:
>
> kamctl trap
>
> The path to the file is printed when the command is executed. Note that it
> can take a bit to generate the file, if you have a lot of kamailio
> processes. The file contains the gdb backtrace for each process, showing
> what they do at that moment.
>
> For a few of other hints, be sure you don't block the traffic with the
> firewall/fail2ban or with pike module in kamailio.cfg.
>
> Cheers,
> Daniel
> On 19.11.20 16:46, Uttam Giri wrote:
>
> Hi,
> We are using Kamailio with Jitsi client where we observed sometimes
> Kamailio stops responding to sip messages. As a result, my Jitsi client
> goes offline and never back online. Also in the Kamailio syslog there are
> no error logs(debug enabled) related to this issue. As a temporary
> workaround, we had to restart the Kamailio server all the time.
> Does anyone observed a similar issue and can suggest any resolution.
>
> Kamailio version:-
> version: kamailio 5.3.5 (x86_64/linux)
> flags: USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS,
> DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MMAP, PKG_MALLOC, Q_MALLOC,
> F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT,
> USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST,
> HAVE_RESOLV_RES, TLS_PTHREAD_MUTEX_SHARED
> ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144, MAX_URI_SIZE 1024,
> BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB
> poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
> id: unknown
> compiled with gcc 7.5.0
>
> UDP process when Kamailio stops responding:-.
>
> root at ip-10-68-16-14:/home/ugiri# kamctl ps
> {
>   "jsonrpc":  "2.0",
>   "result": [
>     {
>       "IDX":  0,
>       "PID":  15436,
>       "DSC":  "main process - attendant"
>     }, {
>       "IDX":  1,
>       "PID":  15442,
>       "DSC":  "udp receiver child=0 sock=10.68.16.14:5060 (
> 100.26.5.214:5060)"
>     }, {
>       "IDX":  2,
>       "PID":  15443,
>       "DSC":  "udp receiver child=1 sock=10.68.16.14:5060 (
> 100.26.5.214:5060)"
>     }, {
>       "IDX":  3,
>       "PID":  15444,
>       "DSC":  "udp receiver child=2 sock=10.68.16.14:5060 (
> 100.26.5.214:5060)"
>     }, {
>       "IDX":  4,
>       "PID":  15445,
>       "DSC":  "udp receiver child=3 sock=10.68.16.14:5060 (
> 100.26.5.214:5060)"
>     }, {
>       "IDX":  5,
>       "PID":  15446,
>       "DSC":  "udp receiver child=4 sock=10.68.16.14:5060 (
> 100.26.5.214:5060)"
>     }, {
>       "IDX":  6,
>       "PID":  15447,
>       "DSC":  "udp receiver child=5 sock=10.68.16.14:5060 (
> 100.26.5.214:5060)"
>     }, {
>       "IDX":  7,
>       "PID":  15448,
>       "DSC":  "udp receiver child=6 sock=10.68.16.14:5060 (
> 100.26.5.214:5060)"
>     }, {
>       "IDX":  8,
>       "PID":  15449,
>       "DSC":  "udp receiver child=7 sock=10.68.16.14:5060 (
> 100.26.5.214:5060)"
>     }, {
>       "IDX":  9,
>       "PID":  15450,
>       "DSC":  "slow timer"
>     }, {
>       "IDX":  10,
>       "PID":  15451,
>       "DSC":  "timer"
>     }, {
>       "IDX":  11,
>       "PID":  15452,
>       "DSC":  "secondary timer"
>  }, {
>       "IDX":  12,
>       "PID":  15453,
>       "DSC":  "JSONRPCS FIFO"
>     }, {
>       "IDX":  13,
>       "PID":  15454,
>       "DSC":  "JSONRPCS DATAGRAM"
>     }, {
>       "IDX":  14,
>       "PID":  15455,
>       "DSC":  "ctl handler"
>     }, {
>       "IDX":  15,
>       "PID":  15456,
>       "DSC":  "Http Async Worker"
>     }, {
>       "IDX":  16,
>       "PID":  15457,
>       "DSC":  "Http Async Worker"
>     }, {
>       "IDX":  17,
>       "PID":  15458,
>       "DSC":  "TIMER NH"
>     }, {
>       "IDX":  18,
>       "PID":  15459,
>       "DSC":  "tcp main process"
>     }
>   ],
>   "id": 17709
> }
>
> Thanks,
> Uttam
>
>
>
>
> _______________________________________________
> Kamailio (SER) - Users Mailing Listsr-users at lists.kamailio.orghttps://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>
> --
> Daniel-Constantin Mierla -- www.asipto.comwww.twitter.com/miconda -- www.linkedin.com/in/miconda
> Funding: https://www.paypal.me/dcmierla
>
>
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