RPCFIFOPATH / DEFINE_FIFO_NAME settings problem - sr-users

24 Mar 2017


      In my 'kamctlrc' file :
## path to FIFO file for engine RPCFIFO
RPCFIFOPATH="/var/run/kamailio/kamailio_rpc_fifo"
#RPCFIFOPATH="/tmp/kamailio_rpc_fifo"
In my 'kamailio.cfg' :
!!ifndef DEFINE_FIFO_NAME
!!define DEFINE_FIFO_NAME "/var/run/kamailio/kamailio_rpc_fifo"
!!endif
modparam("jsonrpcs", "pretty_format", 1)
modparam("jsonrpcs", "transport", 2)
modparam("jsonrpcs", "fifo_name", DEFINE_FIFO_NAME)
modparam("jsonrpcs", "fifo_mode", 0755)
modparam("jsonrpcs", "fifo_group", "kamailio")
modparam("jsonrpcs", "fifo_user", "kamailio")
kamailio doesn't start. It reports 'Permission denied' :
Mar 24 17:31:21 localhost /usr/sbin/kamailio[1138]: ERROR: jsonrpcs [jsonrpcs_fifo.c:144]: jsonrpc_init_fifo_server(): Can't create FIFO: Permission denied (mode=493)
Mar 24 17:31:21 localhost /usr/sbin/kamailio[1138]: CRITICAL: jsonrpcs [jsonrpcs_fifo.c:489]: jsonrpc_fifo_process(): failed to init jsonrpc fifo server
Mar 24 17:31:21 localhost /usr/sbin/kamailio[1120]: ALERT: <core> [main.c:741]: handle_sigs(): child process 1138 exited normally, status=255
Mar 24 17:31:21 localhost /usr/sbin/kamailio[1130]: DEBUG: <core> [core/sr_module.c:920]: init_mod_child(): rank 4: tm
Mar 24 17:31:21 localhost /usr/sbin/kamailio[1137]: DEBUG: <core> [core/sr_module.c:920]: init_mod_child(): rank -1: tm
Mar 24 17:31:21 localhost /usr/sbin/kamailio[1127]: DEBUG: htable [htable.c:226]: child_init(): rank is (1)
Mar 24 17:31:21 localhost /usr/sbin/kamailio[1120]: INFO: <core> [main.c:759]: handle_sigs(): terminating due to SIGCHLD
Mar 24 17:31:21 localhost /usr/sbin/kamailio[1139]: DEBUG: <core> [core/sr_module.c:920]: init_mod_child(): rank -2: kex
Mar 24 17:31:21 localhost /usr/sbin/kamailio[1130]: DEBUG: tm [callid.c:137]: child_init_callid(): callid: '15b1f0d63a718465-1130@129.227.83.108'
Mar 24 17:31:21 localhost /usr/sbin/kamailio[1137]: DEBUG: tm [callid.c:137]: child_init_callid(): callid: '15b1f0d63a718465-1137@129.227.83.108'
Mar 24 17:31:21 localhost /usr/sbin/kamailio[1127]: DEBUG: <core> [core/action.c:1656]: run_child_one_init_route(): attempting to run event_route[core:worker-one-init]
Mar 24 17:31:21 localhost /usr/sbin/kamailio[1136]: INFO: <core> [main.c:814]: sig_usr(): signal 15 received
Mar 24 17:31:21 localhost /usr/sbin/kamailio[1135]: INFO: <core> [main.c:814]: sig_usr(): signal 15 received
Mar 24 17:31:21 localhost /usr/sbin/kamailio[1134]: INFO: <core> [main.c:814]: sig_usr(): signal 15 received
Mar 24 17:31:21 localhost /usr/sbin/kamailio[1133]: INFO: <core> [main.c:814]: sig_usr(): signal 15 received
Mar 24 17:31:21 localhost /usr/sbin/kamailio[1132]: INFO: <core> [main.c:814]: sig_usr(): signal 15 received
Mar 24 17:31:21 localhost /usr/sbin/kamailio[1131]: INFO: <core> [main.c:814]: sig_usr(): signal 15 received
Mar 24 17:31:21 localhost /usr/sbin/kamailio[1129]: INFO: <core> [main.c:814]: sig_usr(): signal 15 received
Mar 24 17:31:21 localhost /usr/sbin/kamailio[1128]: INFO: <core> [main.c:814]: sig_usr(): signal 15 received
Mar 24 17:31:21 localhost /usr/sbin/kamailio[1120]: ERROR: ctl [ctl.c:387]: mod_destroy(): ERROR: ctl: could not delete unix socket /var/run/kamailio//kamailio_ctl: Permission denied (13)
Mar 24 17:31:21 localhost /usr/sbin/kamailio[1120]: ERROR: jsonrpcs [jsonrpcs_fifo.c:595]: jsonrpc_fifo_destroy(): FIFO stat failed: Permission denied
If I replace the values in the 2 files as appropriate :
In the 'kamctlrc" to RPCFIFOPATH="/tmp/kamailio_rpc_fifo"
In the 'kamailio.cfg" to !!define DEFINE_FIFO_NAME "/tmp/kamailio_rpc_fifo"
Then kamailo starts :
[root@vm-vse02-siprouter1 ~]# ps -ef |grep kam
kamailio  1235     1  0 17:37 ?        00:00:00 /usr/sbin/kamailio -P /var/run/kamailio.pid -m 1024 -M 8 -u kamailio -g kamailio
kamailio  1236  1235  0 17:37 ?        00:00:00 /usr/sbin/kamailio -P /var/run/kamailio.pid -m 1024 -M 8 -u kamailio -g kamailio
kamailio  1237  1235  0 17:37 ?        00:00:00 /usr/sbin/kamailio -P /var/run/kamailio.pid -m 1024 -M 8 -u kamailio -g kamailio
kamailio  1238  1235  0 17:37 ?        00:00:00 /usr/sbin/kamailio -P /var/run/kamailio.pid -m 1024 -M 8 -u kamailio -g kamailio
kamailio  1239  1235  0 17:37 ?        00:00:00 /usr/sbin/kamailio -P /var/run/kamailio.pid -m 1024 -M 8 -u kamailio -g kamailio
kamailio  1240  1235  0 17:37 ?        00:00:00 /usr/sbin/kamailio -P /var/run/kamailio.pid -m 1024 -M 8 -u kamailio -g kamailio
kamailio  1241  1235  0 17:37 ?        00:00:00 /usr/sbin/kamailio -P /var/run/kamailio.pid -m 1024 -M 8 -u kamailio -g kamailio
kamailio  1242  1235  0 17:37 ?        00:00:00 /usr/sbin/kamailio -P /var/run/kamailio.pid -m 1024 -M 8 -u kamailio -g kamailio
kamailio  1243  1235  0 17:37 ?        00:00:00 /usr/sbin/kamailio -P /var/run/kamailio.pid -m 1024 -M 8 -u kamailio -g kamailio
kamailio  1244  1235  0 17:37 ?        00:00:00 /usr/sbin/kamailio -P /var/run/kamailio.pid -m 1024 -M 8 -u kamailio -g kamailio
kamailio  1245  1235  0 17:37 ?        00:00:00 /usr/sbin/kamailio -P /var/run/kamailio.pid -m 1024 -M 8 -u kamailio -g kamailio
kamailio  1246  1235  0 17:37 ?        00:00:00 /usr/sbin/kamailio -P /var/run/kamailio.pid -m 1024 -M 8 -u kamailio -g kamailio
kamailio  1247  1235  0 17:37 ?        00:00:00 /usr/sbin/kamailio -P /var/run/kamailio.pid -m 1024 -M 8 -u kamailio -g kamailio
kamailio  1248  1235  0 17:37 ?        00:00:00 /usr/sbin/kamailio -P /var/run/kamailio.pid -m 1024 -M 8 -u kamailio -g kamailio
root      1251  1165  0 17:37 pts/0    00:00:00 grep --color=auto kam
and I can get result from kamctl/kamcmd commands :
[root@vm-vse02-siprouter1 ~]# kamctl dispatcher dump
which: no gdb in (/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/)
{
  "jsonrpc":  "2.0",
  "result": {
    "NRSETS": 1,
    "RECORDS":  [{
        "SET":  {
          "ID": 1,
          "TARGETS":  [{
              "DEST": {
                "URI":  "sip:cs1-tool-misc.orange-voicemail.net:5060",
                "FLAGS":  "AP",
                "PRIORITY": 0
              }
            }]
        }
      }]
  },
  "id": 1301
}
[root@vm-vse02-siprouter1 ~]# kamcmd dispatcher.list
{
        NRSETS: 1
        RECORDS: {
                SET: {
                        ID: 1
                        TARGETS: {
                                DEST: {
                                        URI: sip:cs1-tool-misc.orange-voicemail.net:5060
                                        FLAGS: AP
                                        PRIORITY: 0
                                }
                        }
                }
        }
}
Now, if I change the fifo patch and name to "/var/run/kamailio/kamailio_rpc_fifo' and apply the following rights on /var/run/  to:
chmod 755 kamalio/
chown + kamailio:kamailio kamailio/
then kamailio starts.
Is there a reason for these results ?
Thanks in advance for your answer.
Cordialement
Patrick GINHOUX