[root@localhost yum.repos.d]# cobbler check
The following are potential configuration items that you may want to fix:1 : The 'server' field in /etc/cobbler/settings must be set to something other than localhost, or kickstarting features will not work.  This should be a resolvable hostname or IP for the boot server as reachable by all machines that will use it.
2 : For PXE to be functional, the 'next_server' field in /etc/cobbler/settings must be set to something other than 127.0.0.1, and should match the IP of the boot server on the PXE network.
3 : SELinux is enabled. Please review the following wiki page for details on ensuring cobbler works correctly in your SELinux environment:https://github.com/cobbler/cobbler/wiki/Selinux
4 : some network boot-loaders are missing from /var/lib/cobbler/loaders, you may run 'cobbler get-loaders' to download them, or, if you only want to handle x86/x86_64 netbooting, you may ensure that you have installed a *recent* version of the syslinux package installed and can ignore this message entirely.  Files in this directory, should you want to support all architectures, should include pxelinux.0, menu.c32, elilo.efi, and yaboot. The 'cobbler get-loaders' command is the easiest way to resolve these requirements.
5 : change 'disable' to 'no' in /etc/xinetd.d/rsync
6 : debmirror package is not installed, it will be required to manage debian deployments and repositories
7 : ksvalidator was not found, install pykickstart
8 : The default password used by the sample templates for newly installed machines (default_password_crypted in /etc/cobbler/settings) is still set to 'cobbler' and should be changed, try: "openssl passwd -1 -salt 'random-phrase-here' 'your-password-here'" to generate new one
9 : fencing tools were not found, and are required to use the (optional) power management features. install cman or fence-agents to use themRestart cobblerd and then run 'cobbler sync' to apply changes.

[root@localhost ~]# cobbler check
The following are potential configuration items that you may want to fix:1 : SELinux is enabled. Please review the following wiki page for details on ensuring cobbler works correctly in your SELinux environment:https://github.com/cobbler/cobbler/wiki/Selinux
2 : service dhcpd is not running
3 : debmirror package is not installed, it will be required to manage debian deployments and repositories
4 : ksvalidator was not found, install pykickstart
5 : The default password used by the sample templates for newly installed machines (default_password_crypted in /etc/cobbler/settings) is still set to 'cobbler' and should be changed, try: "openssl passwd -1 -salt 'random-phrase-here' 'your-password-here'" to generate new one
6 : fencing tools were not found, and are required to use the (optional) power management features. install cman or fence-agents to use themRestart cobblerd and then run 'cobbler sync' to apply changes.

[root@localhost log]# vim /etc/cobbler/dhcp.template
subnet 192.168.123.0 netmask 255.255.255.0 {option routers             192.168.123.1;option domain-name-servers 10.12.96.17;option subnet-mask         255.255.255.0;range dynamic-bootp        192.168.123.105 192.168.123.199;default-lease-time         21600;max-lease-time             43200;next-server                192.168.123.100;filename                   "/pxelinux.0";
}

[root@localhost ~]# cobbler check
Traceback (most recent call last):File "/usr/bin/cobbler", line 35, in <module>sys.exit(app.main())File "/usr/lib/python2.6/site-packages/cobbler/cli.py", line 644, in mainrc = cli.run(sys.argv)File "/usr/lib/python2.6/site-packages/cobbler/cli.py", line 270, in runself.token         = self.remote.login("", self.shared_secret)File "/usr/lib64/python2.6/xmlrpclib.py", line 1199, in __call__return self.__send(self.__name, args)File "/usr/lib64/python2.6/xmlrpclib.py", line 1489, in __requestverbose=self.__verboseFile "/usr/lib64/python2.6/xmlrpclib.py", line 1253, in requestreturn self._parse_response(h.getfile(), sock)File "/usr/lib64/python2.6/xmlrpclib.py", line 1392, in _parse_responsereturn u.close()File "/usr/lib64/python2.6/xmlrpclib.py", line 838, in closeraise Fault(**self._stack[0])
xmlrpclib.Fault: <Fault 1: "<class 'cobbler.cexceptions.CX'>:'login failed'">