Nagios Support Forum

Hi All

I see lot of child process running on my server. I dont know why. check below details and suggest me.

Currently 4.3.2 is installed and running on ubuntu 16.10

~# ps -ef | grep -i nagios
nagios 3803 1 0 Jun01 ? 00:00:00 /usr/sbin/nrpe -c /etc/nagios/nrpe.cfg -d
nagios 105343 1 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios /usr/local/nagios/etc/nagios.cfg
nagios 105352 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105353 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105354 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105355 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105356 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105357 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105358 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105359 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105360 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105361 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105362 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105363 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105364 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105365 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105366 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105367 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105368 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105369 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105370 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105371 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105372 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105374 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105375 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105376 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105377 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105378 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105379 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105380 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105381 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105382 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105383 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105384 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105385 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105386 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105388 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 105394 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios --worker /usr/local/nagios/var/rw/nagios.qh
nagios 106050 105343 0 16:39 ? 00:00:00 /usr/local/nagios/bin/nagios /usr/local/nagios/etc/nagios.cfg


~# dpkg --list | grep -i nagios
ii monitoring-plugins-basic 2.1.2-2ubuntu2 amd64 Plugins for nagios compatible monitoring systems (basic)
ii monitoring-plugins-common 2.1.2-2ubuntu2 amd64 Common files for plugins for nagios compatible monitoring
ii nagios-nrpe-plugin 2.15-1ubuntu2 amd64 Nagios Remote Plugin Executor Plugin
ii nagios-nrpe-server 2.15-1ubuntu2 amd64 Nagios Remote Plugin Executor Server
ii nagios-plugins-basic 2.1.2-2ubuntu2 all transitional dummy package


# pstree -l
systemd─┬─accounts-daemon─┬─{gdbus}
│ └─{gmain}
├─acpid
├─apache2───10*[apache2]
├─atd
├─cron
├─dbus-daemon
├─irqbalance
├─2*[iscsid]
├─libvirtd───15*[{libvirtd}]
├─login───bash
├─lvmetad
├─lxcfs───3*[{lxcfs}]
├─nagios───37*[nagios]
├─nrpe
├─polkitd─┬─{gdbus}
│ └─{gmain}
├─rsyslogd─┬─{in:imklog}
│ ├─{in:imuxsock}
│ └─{rs:main Q:Reg}
├─sendmail-mta
├─snapd───7*[{snapd}]
├─sshd─┬─sshd───bash
│ ├─2*[sshd───sftp-server]
│ └─sshd───bash───pstree
├─systemd───(sd-pam)
├─systemd-journal
├─systemd-logind
├─systemd-resolve
├─systemd-timesyn───{sd-resolve}
├─systemd-udevd
├─vsftpd
└─xinetd

children are fine. If you have multiple parents, that would be a problem. Did you want more detail than that?

Thanks for your response.