how to debug when xinetd says : got signal 17 (child exited)
- by Faizan Shaik
I am trying to start services vsftpd and sshd using xinetd. my config files are as follows.
/etc/xinetd.conf
defaults
{
instances = 60
log_type = FILE /var/log/xinetdlog
log_on_success = HOST PID
log_on_failure = HOST
cps = 25 30
only_from = localhost
}
includedir /etc/xinetd.d
/etc/xinetd.d/ftp
service ftp
{
disable = no
server = /usr/sbin/vsftpd
server_args = -l
user = root
socket_type = stream
protocol = tcp
wait = no
instances = 4
flags = REUSE
nice = 10
log_on_success += DURATION HOST USERID
only_from = 127.0.0.1 10.0.0.0/24
}
/etc/xinetd.d/ssh
service ssh
{
disable = no
log_on_failure += USERID
server = /usr/sbin/sshd
user = root
socket_type = stream
protocol = tcp
wait = no
instances = 20
flags = REUSE
only_from = 127.0.0.1 10.0.0.0/24
}
Even though i've included only_from attribute, vsftp server as well as ssh server are refusing connection from localhost. while vsftp and ssh servers are working fine individually when i check with "service vsftpd start" and "service ssh start". when i did debug using "xinetd -d" throug terminal i got the output as
13/10/20@00:06:08: DEBUG: 3592 {cnf_start_services} Started service: ftp
13/10/20@00:06:08: DEBUG: 3592 {cnf_start_services} Started service: ssh
13/10/20@00:06:08: DEBUG: 3592 {cnf_start_services} mask_max = 8, services_started = 2
13/10/20@00:06:08: NOTICE: 3592 {main} xinetd Version 2.3.14 started with libwrap loadavg options compiled in.
13/10/20@00:06:08: NOTICE: 3592 {main} Started working: 2 available services
13/10/20@00:06:08: DEBUG: 3592 {main_loop} active_services = 2
13/10/20@00:06:16: DEBUG: 3592 {main_loop} select returned 1
13/10/20@00:06:16: DEBUG: 3592 {server_start} Starting service ftp
13/10/20@00:06:16: DEBUG: 3592 {main_loop} active_services = 2
13/10/20@00:06:16: DEBUG: 3607 {exec_server} duping 9
13/10/20@00:06:16: DEBUG: 3592 {main_loop} active_services = 2
13/10/20@00:06:16: DEBUG: 3592 {main_loop} select returned 1
13/10/20@00:06:16: DEBUG: 3592 {check_pipe} Got signal 17 (Child exited)
13/10/20@00:06:16: DEBUG: 3592 {child_exit} waitpid returned = 3607
13/10/20@00:06:16: DEBUG: 3592 {server_end} ftp server 3607 exited
13/10/20@00:06:16: DEBUG: 3592 {svc_postmortem} Checking log size of ftp service
13/10/20@00:06:16: INFO: 3592 {conn_free} freeing connection
13/10/20@00:06:16: DEBUG: 3592 {child_exit} waitpid returned = -1
both services are getting started but neither of them is working.
after banging for 3-4 hours i still don't have any clue about this error. Any help would be appreciated. thanks!
