How to install Cobbler in CentOS 7.4

How to install Cobbler in CentOS 7.4

System:
[Root @ cobbler ~] # More/etc/RedHat-release
CentOS Linux release 7.4.1708 (Core)

1. Install basic software:
Yum-y install wget net-tools curl epel-release
Update:
Yum-y update
Disable iptables and selinux:
[Root @ cobbler ~] # Vim/etc/selinux/config
SELINUX = disabled
View after restart:
[Root @ cobbler ~] # Sestatus
SELinux status: disabled

Ii. Install basic services:
Yum-y install dhcp httpd xinetd tftp-server rsync fence-agents pykickstart
Set startup
Systemctl enable xinetd dhcpd httpd rsyncd
Systemctl start xinetd dhcpd httpd rsyncd
1. Install cobbler
[Root @ cobbler ~] # Yum-y install cobbler-web
Set boot start:
Systemctl enable cobblerd
Systemctl start cobblerd

2. Verify cobbler installation conditions
[Root @ cobbler ~] # Cobbler check
The following are potential configuration items that you may be want to fix:

1: comment out 'dists 'on/etc/debmirror. conf for proper debian support
2: comment out 'archies' on/etc/debmirror. conf for proper debian support

Restart cobblerd and then run 'cobbler sync' to apply changes

3. Generate a random password
[Root @ cobbler ~] # Openssl passwd-1-salt "cobbler" "huangzai"
$1 $ cobbler $ zPOuqy9SLOb87DIQb3RbQ.

4. Change the cobbler configuration file
[Root @ cobbler ~] # Vim/etc/cobbler/settings
..........
Default_password_crypted: "$1 $ cobbler $ zPOuqy9SLOb87DIQb3RbQ." # password generated in step 3
Manage_dhcp: 1 # dhcp Service
Manage_tftpd: 1 # xinetd service
Manage_rsync: 1 # rsyncd Service
Next_server: 192.168.3.222 # Replace the IP address of the cost server with the IP address of the dhcp service.
Server: 192.168.3.222 # Replace it with the local IP address and the cobber service address
..........

5. Update the load information:
[Root @ cobbler ~] # Cobbler get-loaders
Task started: 2018-03-06_051434_get_loaders
Task started (id = Download Bootloader Content, time = Tue Mar 6 05:14:34 2018)
Downloading https://cobbler.github.io/loaders/README to/var/lib/cobbler/loaders/README
Downloading https://cobbler.github.io/loaders/COPYING.elilo to/var/lib/cobbler/loaders/COPYING. elilo
Downloading https://cobbler.github.io/loaders/COPYING.yaboot to/var/lib/cobbler/loaders/COPYING. yaboot
Downloading https://cobbler.github.io/loaders/COPYING.syslinux: to/var/lib/cobbler/loaders/COPYING. syslinux
Downloading https://cobbler.github.io/loaders/elilo-3.8-ia64.efi to/var/lib/cobbler/loaders/elilo-ia64.efi
Downloading https://cobbler.github.io/loaders/yaboot-1.3.17 to/var/lib/cobbler/loaders/yaboot
Downloading https://cobbler.github.io/loaders/pxelinux.0-3.86 to/var/lib/cobbler/loaders/pxelinux.0
Downloading https://cobbler.github.io/loaders/menu.c32-3.86 to/var/lib/cobbler/loaders/menu. c32
Downloading https://cobbler.github.io/loaders/grub-0.97-x86.efi to/var/lib/cobbler/loaders/grub-x86.efi
Downloading https://cobbler.github.io/loaders/grub-0.97-x86_64.efi to/var/lib/cobbler/loaders/grub-x86_64.efi
TASK COMPLETE

6. Set the tftp configuration file to 'disable' to 'no'
[Root @ cobbler ~] # Cat/etc/xinetd. d/tftp | grep-v '^ #'
Service tftp
{
Disable = no
Socket_type = dgram
Protocol = udp
Wait = yes
User = root
Server =/usr/sbin/in. tftpd
Server_args =-B 1380-v-s/var/lib/tftpboot
Per_source = 11
CPIs = 100 2
Flags = IPv4
}

7. Modify the dhcp configuration file
[Root @ cobbler ~] # Vim/etc/cobbler/dhcp. template
Ddns-update-style interim;
Allow booting;
Allow bootp;
Ignore client-updates;
Set vendorclass = option vendor-class-identifier;
Option pxe-system-type code 93 = unsigned integer 16;
Subnet 192.168.3.0 netmask 255.255.255.0 {
Option routers 192.168.3.222;
Option domain-name-servers 202.96.209.5, 202.96.209.20;
Option subnet-mask limit 255.0;
Range dynamic-bootp 192.168.3.60 192.168.3.100;
Default-lease-time 21600;
Max-lease-time 43200;
Next-server $ next_server;
Class "pxeclients "{
Match if substring (option vendor-class-identifier, 0, 9) = "PXEClient ";
If option pxe-system-type = 00:02 {
Filename "ia64/elilo. efi ";
} Else if option pxe-system-type = 00:06 {
Filename "grub/grub-x86.efi ";
} Else if option pxe-system-type = 00:07 {
Filename "grub/grub-x86_64.efi ";
} Else if option pxe-system-type = 00:09 {
Filename "grub/grub-x86_64.efi ";
} Else {
Filename "pxelinux.0 ";
}
}

}
.........

3. Import the image for configuration
1. upload an iso image to the server
2. Create a folder
Mkdir-p/data/centos7.0
3. Mount or copy an image file to a folder
[Root @ cobbler ~] # Mount/dev/cdrom/data/centos7.0/

4. Import the content in the mnt directory of the mounted CD image to cobbler.
[Root @ cobbler ~] # Cobbler import -- path =/data/centos7.0/-- name = cent7.0
Task started: 2018-03-06_055628_import
Tasks started (id = Media import, time = Tue Mar 6 05:56:28 2018)
Found a candidate signature: breed = redhat, version = rhel6
Found a candidate signature: breed = redhat, version = rhel7
Found a matching signature: breed = redhat, version = rhel7
Adding distros from path/var/www/cobbler/ks_mirror/cent7.0:
Creating new distro: cent7.0-x86_64
Trying symlink:/var/www/cobbler/ks_mirror/cent7.0->/var/www/cobbler/links/cent7.0-x86_64
Creating new profile: cent7.0-x86_64
Associating repos
Checking for rsync repo (s)
Checking for rhn repo (s)
Checking for yum repo (s)
Starting descent into/var/www/cobbler/ks_mirror/cent7.0 for cent7.0-x86_64
Processing repo at:/var/www/cobbler/ks_mirror/cent7.0
Need to process repo/comps:/var/www/cobbler/ks_mirror/cent7.0
Looking for/var/www/cobbler/ks_mirror/cent7.0/repodata/comps. xml
Keeping repodata as-is:/var/www/cobbler/ks_mirror/cent7.0/repodata
TASK COMPLETE

5. view the import information in the cobber report
[Root @ cobbler ~] # Cobbler report
Distros:

Name: cent7.0-x86_64
Architecture: x86_64
TFTP Boot Files :{}
Breed: redhat
Comment:
Fetchable Files :{}
Initrd:/var/www/cobbler/ks_mirror/cent7.0/images/pxeboot/initrd. img
Kernel:/var/www/cobbler/ks_mirror/cent7.0/images/pxeboot/vmlinuz
Kernel Options :{}
Kernel Options (Post Install ):{}
Kickstart Metadata: {'tree': 'http: // @ http_server @/cblr/links/cent7.0-x86_64 '}
Management Classes: []
OS Version: rhel7
Owners: ['admin']
Red Hat Management Key: <inherit>
Red Hat Management Server: <inherit>
Template Files :{}

Name: rhel7.0-x86_64
Architecture: x86_64
TFTP Boot Files :{}
Breed: redhat
Comment:
Fetchable Files :{}
Initrd:/var/www/cobbler/ks_mirror/rhel7.0/images/pxeboot/initrd. img
Kernel:/var/www/cobbler/ks_mirror/rhel7.0/images/pxeboot/vmlinuz
Kernel Options :{}
Kernel Options (Post Install ):{}
Kickstart Metadata: {'tree': 'http: // @ http_server @/cblr/links/rhel7.0-x86_64 '}
Management Classes: []
OS Version: rhel7
Owners: ['admin']
Red Hat Management Key: <inherit>
Red Hat Management Server: <inherit>
Template Files :{}

Profiles:

Name: cent7.0-x86_64
TFTP Boot Files :{}
Comment:
DHCP Tag: default
Distribution: cent7.0-x86_64
Enable gPXE? : 0
Enable PXE Menu? : 1
Fetchable Files :{}
Kernel Options :{}
Kernel Options (Post Install ):{}
Kickstart:/var/lib/cobbler/kickstarts/sample_end.ks
Kickstart Metadata :{}
Management Classes: []
Management Parameters: <inherit>
Name Servers: []
Name Servers Search Path: []
Owners: ['admin']
Parent Profile:
Internal proxy:
Red Hat Management Key: <inherit>
Red Hat Management Server: <inherit>
Repos: []
Server Override: <inherit>
Template Files :{}
Virt Auto Boot: 1
Virt Bridge: xenbr0
Virt CPUs: 1
Virt Disk Driver Type: raw
Virt File Size (GB): 5
Virt Path:
Virt RAM (MB): 512
Virt Type: kvm

Name: rhel7.0-x86_64
TFTP Boot Files :{}
Comment:
DHCP Tag: default
Distribution: rhel7.0-x86_64
Enable gPXE? : 0
Enable PXE Menu? : 1
Fetchable Files :{}
Kernel Options :{}
Kernel Options (Post Install ):{}
Kickstart:/var/lib/cobbler/kickstarts/sample_end.ks
Kickstart Metadata :{}
Management Classes: []
Management Parameters: <inherit>
Name Servers: []
Name Servers Search Path: []
Owners: ['admin']
Parent Profile:
Internal proxy:
Red Hat Management Key: <inherit>
Red Hat Management Server: <inherit>
Repos: []
Server Override: <inherit>
Template Files :{}
Virt Auto Boot: 1
Virt Bridge: xenbr0
Virt CPUs: 1
Virt Disk Driver Type: raw
Virt File Size (GB): 5
Virt Path:
Virt RAM (MB): 512
Virt Type: kvm

6. view the import list
[Root @ cobbler ~] # Cobbler distro list
Cent7.0-x86_64
Rhel7.0-x86_64

7. Synchronize all cobber configurations
[Root @ cobbler ~] # Cobbler sync
Task started: 2018-03-06_061140_sync
Task started (id = Sync, time = Tue Mar 6 06:11:40 2018)
Running pre-sync triggers
Cleaning trees
Removing:/var/www/cobbler/images/cent7.0-x86_64
Removing:/var/lib/tftpboot/pxelinux. cfg/default
Removing:/var/lib/tftpboot/grub/images
Removing:/var/lib/tftpboot/grub/efidefault
Removing:/var/lib/tftpboot/images/cent7.0-x86_64
Removing:/var/lib/tftpboot/s390x/profile_list
Copying bootloaders
Copying:/var/lib/cobbler/loaders/pxelinux.0->/var/lib/tftpboot/pxelinux.0
Copying:/var/lib/cobbler/loaders/menu. c32->/var/lib/tftpboot/menu. c32
Copying:/var/lib/cobbler/loaders/yaboot->/var/lib/tftpboot/yaboot
Copying:/usr/share/syslinux/memdisk->/var/lib/tftpboot/memdisk
Copying:/var/lib/cobbler/loaders/grub-x86.efi->/var/lib/tftpboot/grub/grub-x86.efi
Copying:/var/lib/cobbler/loaders/grub-x86_64.efi->/var/lib/tftpboot/grub/grub-x86_64.efi
Copying distros to tftpboot
Copying files for distro: cent7.0-x86_64
Trying hardlink/var/www/cobbler/ks_mirror/cent7.0/images/pxeboot/vmlinuz->/var/lib/tftpboot/images/cent7.0-x86_64/vmlinuz
Trying hardlink/var/www/cobbler/ks_mirror/cent7.0/images/pxeboot/initrd. img->/var/lib/tftpboot/images/cent7.0-x86_64/initrd. img
Copying images
Generating PXE configuration files
Generating PXE menu structure
Copying files for distro: cent7.0-x86_64
Trying hardlink/var/www/cobbler/ks_mirror/cent7.0/images/pxeboot/vmlinuz->/var/www/cobbler/images/cent7.0-x86_64/vmlinuz
Trying hardlink/var/www/cobbler/ks_mirror/cent7.0/images/pxeboot/initrd. img->/var/www/cobbler/images/cent7.0-x86_64/initrd. img
Writing template files for cent7.0-x86_64
Rendering TFTPD files
Generating/etc/xinetd. d/tftp
Processing boot_files for distro: cent7.0-x86_64
Cleaning link caches
Running post-sync triggers
Running python triggers from/var/lib/cobbler/triggers/sync/post/
Running python trigger cobbler. modules. sync_post_restart_services
Running shell triggers from/var/lib/cobbler/triggers/sync/post/
Running python triggers from/var/lib/cobbler/triggers/change/
Running python trigger cobbler. modules. scm_track
Running shell triggers from/var/lib/cobbler/triggers/change/
TASK COMPLETE

8. Restart all services

9. After the installation is successful, start the client:

10. Modify the cobber logon password:
[Root @ cobbler ~] # Htdigest/etc/cobbler/users. digest "Cobbler" cobbler
Changing password for user cobbler in realm Cobbler
New password:
Re-type new password:

11. Open cobber web

Cobblerd startup Error
[Root @ cobbler conf. d] # systemctl status cobblerd
● Cobblerd. service-Cobbler Helper Daemon
Loaded: loaded (/usr/lib/systemd/system/cobblerd. service; enabled; vendor preset: disabled)
Active: inactive (dead) since Mon 2013-3-12 07:09:51 EDT; 18 s ago
Process: 1644 ExecStartPost =/usr/bin/touch/usr/share/cobbler/web/cobbler. wsgi (code = exited, status = 0/SUCCESS)
Process: 1643 ExecStart =/usr/bin/cobblerd-F (code = exited, status = 0/SUCCESS)
Main PID: 1643 (code = exited, status = 0/SUCCESS)

Mar 12 07:09:51 cobbler cobblerd [1643]: Traceback (most recent call last ):
Mar 12 07:09:51 cobbler cobblerd [1643]: File "/usr/bin/cobblerd", line 75, in main
Mar 12 07:09:51 cobbler cobblerd [1643]: api = cobbler_api.BootAPI (is_cobblerd = True)
Mar 12 07:09:51 cobbler cobblerd [1643]: File "/usr/lib/python2.7/site-packages/cobbler/api. py",... it __
Mar 12 07:09:51 cobbler cobblerd [1643]: "authn_configfile"
Mar 12 07:09:51 cobbler cobblerd [1643]: File "/usr/lib/python2.7/site-packages/cobbler/api. py",... file
Mar 12 07:09:51 cobbler cobblerd [1643]: return module_loader.get_module_from_file (section, name, f... ack)
Mar 12 07:09:51 cobbler cobblerd [1643]: File "/usr/lib/python2.7/site-packages/cobbler/modulelo... file
Mar 12 07:09:51 cobbler cobblerd [1643]: raise CX ("Failed to load module for % s/% s") % (categor... ld ))
Mar 12 07:09:51 cobbler cobblerd [1643]: CX: 'failed to load module for authentication/module'
Hint: Some lines were ellipsized, use-l to show in full.
Solution:
[Root @ cobbler ~] # Vim/etc/cobbler/modules. conf
[Authentication]
Module = authn_configfile
Restart the cobber Service
Systemctl restart cobblerd

Verification error:
[Root @ cobbler ~] # Cobbler check
Httpd does not appear to be running and proxying cobbler, or SELinux is in the way. Original traceback:
Traceback (most recent call last ):
File "/usr/lib/python2.7/site-packages/cobbler/cli. py", line 251, in check_setup
S. ping ()
File "/usr/lib64/python2.7/xmlrpclib. py", line 1233, in call
Return self. send (self. name, args)
File "/usr/lib64/python2.7/xmlrpclib. py", line 1587, in request
Verbose = self. verbose
File "/usr/lib64/python2.7/xmlrpclib. py", line 1273, in request
Return self. single_request (host, handler, request_body, verbose)
File "/usr/lib64/python2.7/xmlrpclib. py", line 1321, in single_request
Response. msg,
ProtocolError: <ProtocolError for 127.0.0.1: 80/cobbler_api: 503 Service Unavailable>

Solution:
Disable selinux:
[Root @ cobbler ~] # Vim/etc/selinux/config
SELINUX = disabled
Restart the server

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