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@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

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