Failed to start LSB: daemon for libvirt virtualization API

I am trying to install cobber(https://cobbler.github.io/) in centos VM. when I tried to start cobbler , libvirtd fails to start message thrown. [root@dev cobbler]# systemctl start cobblerd Job for cobblerd.service failed because the control process exited with error code. See "systemctl status cobblerd.service" and "journalctl -xe" for details. cobblerd.service log [root@dev cobbler]# systemctl status cobblerd.service ● cobblerd.service - LSB: daemon for libvirt virtualization API Loaded: loaded (/etc/rc.d/init.d/cobblerd; bad; vendor preset: disabled) Active: failed (Result: exit-code) since Fri 2019-05-24 04:30:55 PDT; 7s ago Docs: man:systemd-sysv-generator(8) Process: 1615 ExecStart=/etc/rc.d/init.d/cobblerd start (code=exited, status=1/FAILURE) May 24 04:30:54 dev systemd: Starting LSB: daemon for libvirt virtualization API... May 24 04:30:55 dev cobblerd: Starting cobbler daemon: [FAILED] May 24 04:30:55 dev systemd: cobblerd.service: control process exited, code=exited status=1 May 24 04:30:55 dev systemd: Failed to start LSB: daemon for libvirt virtualization API. May 24 04:30:55 dev systemd: Unit cobblerd.service entered failed state. May 24 04:30:55 dev systemd: cobblerd.service failed. Below is the logs of journalctl -xe [root@dev ~]# systemctl start cobblerd Job for cobblerd.service failed because the control process exited with error code. See "systemctl status cobblerd.service" and "journalctl -xe" for details. [root@dev ~]# journalctl -xe Jun 03 19:58:34 ztp-dev sshd: Failed password for invalid user support from 104.99.0.147 port 56131 ssh2 Jun 03 19:58:34 ztp-dev sshd: Connection reset by 104.99.0.147 port 56131 [preauth] Jun 03 19:58:36 ztp-dev sshd: Did not receive identification string from 104.99.0.147 port 56418 Jun 03 19:58:45 ztp-dev polkitd: Registered Authentication Agent for unix-process:29996:625961854 (system bus name :1.3601 [/usr/bin/pkttyagent --notify-fd 5 --fall Jun 03 19:58:45 ztp-dev systemd: Reloading. Jun 03 19:58:45 ztp-dev polkitd: Unregistered Authentication Agent for unix-process:29996:625961854 (system bus name :1.3601, object path /org/freedesktop/PolicyKit Jun 03 19:59:21 ztp-dev sshd: Invalid user demo from 125.207.14.76 port 47714 Jun 03 19:59:21 ztp-dev sshd: input_userauth_request: invalid user demo [preauth] Jun 03 19:59:21 ztp-dev sshd: pam_unix(sshd:auth): check pass; user unknown Jun 03 19:59:21 ztp-dev sshd: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=125.207.14.76 Jun 03 19:59:23 ztp-dev sshd: Failed password for invalid user demo from 125.207.14.76 port 47714 ssh2 Jun 03 19:59:23 ztp-dev sshd: Received disconnect from 125.207.14.76 port 47714:11: Bye Bye [preauth] Jun 03 19:59:23 ztp-dev sshd: Disconnected from 125.207.14.76 port 47714 [preauth] Jun 03 20:00:09 ztp-dev sshd: Did not receive identification string from 219.92.1.132 port 57163 Jun 03 20:00:17 ztp-dev sshd: Address 25.95.113.42 maps to host.colocrossing.com, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT! Jun 03 20:00:17 ztp-dev sshd: Invalid user raynard from 25.95.113.42 port 52350 Jun 03 20:00:17 ztp-dev sshd: input_userauth_request: invalid user raynard [preauth] Jun 03 20:00:17 ztp-dev sshd: pam_unix(sshd:auth): check pass; user unknown Jun 03 20:00:17 ztp-dev sshd: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=25.95.113.42 Jun 03 20:00:19 ztp-dev sshd: Failed password for invalid user raynard from 25.95.113.42 port 52550 ssh2 Jun 03 20:00:19 ztp-dev sshd: Received disconnect from 25.95.113.42 port 52350:11: Bye Bye [preauth] Jun 03 20:00:19 ztp-dev sshd: Disconnected from 25.95.113.42 port 52350 [preauth] Jun 03 20:00:28 ztp-dev polkitd: Registered Authentication Agent for unix-process:30025:625972177 (system bus name :1.3602 [/usr/bin/pkttyagent --notify-fd 5 --fall Jun 03 20:00:28 ztp-dev systemd: Starting LSB: daemon for libvirt virtualization API... -- Subject: Unit cobblerd.service has begun start-up -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit cobblerd.service has begun starting up. Jun 03 20:00:29 ztp-dev cobblerd: Starting cobbler daemon: [FAILED] Jun 03 20:00:29 ztp-dev systemd: cobblerd.service: control process exited, code=exited status=1 Jun 03 20:00:29 ztp-dev systemd: Failed to start LSB: daemon for libvirt virtualization API. -- Subject: Unit cobblerd.service has failed -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit cobblerd.service has failed. -- -- The result is failed. Jun 03 20:00:29 ztp-dev systemd: Unit cobblerd.service entered failed state. Jun 03 20:00:29 ztp-dev systemd: cobblerd.service failed. Jun 03 20:00:29 ztp-dev polkitd: Unregistered Authentication Agent for unix-process:30025:625972177 (system bus name :1.3602, object path /org/freedesktop/PolicyKit I could able to start libvirtd like below. [root@dev cobbler]# systemctl status libvirtd ● libvirtd.service - Virtualization daemon Loaded: loaded (/usr/lib/systemd/system/libvirtd.service; enabled; vendor preset: enabled) Active: active (running) since Fri 2019-05-24 04:09:21 PDT; 20min ago Docs: man:libvirtd(8) https://libvirt.org Main PID: 789 (libvirtd) Tasks: 19 (limit: 32768) CGroup: /system.slice/libvirtd.service ├─ 789 /usr/sbin/libvirtd ├─29627 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/libexec/libvirt_leaseshelper └─29628 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/libexec/libvirt_leaseshelper May 24 04:09:21 dev systemd: Starting Virtualization daemon... May 24 04:09:21 dev systemd: Started Virtualization daemon. May 24 04:09:21 dev dnsmasq: read /etc/hosts - 2 addresses May 24 04:09:21 dev dnsmasq: read /var/lib/libvirt/dnsmasq/default.addnhosts - 0 addresses May 24 04:09:21 dev dnsmasq-dhcp: read /var/lib/libvirt/dnsmasq/default.hostsfile I could able to start/stop libvirt using systemctl start/stop libvirt command, but libvirtd fails to start when run the systemctl start cobblerd How to address this issue? Thanks, Mohan