006-Cobbler批量自動化部署CentOS/Ubuntu/Windows

這是堅持技術寫作計劃（含翻譯）的第6篇，定個小目標999，每週最少2篇。

本文主要講解通過CentOS7.6 Minimal + Cobbler 自動化安裝CentOS,Ubuntu,Windows

準備

從阿里映象站，下載 CentOS-7-x86_64-Minimal-1810.iso 和 ubuntu-16.04.5-desktop-amd64.iso ，使用VMware建立一臺CentOS7的虛擬機器。

環境初始化

1.改為阿里源

# yum源
# 備份系統預設源
[root@localhost ~]# mkdir /etc/yum.repos.d/old && mv /etc/yum.repos.d/C* /etc/yum.repos.d/old/
[root@localhost ~]# yum clean all
# 設定阿里yum源
[root@localhost ~]# curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
[root@localhost ~]# curl -o /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo

# pip源(2.8.4的bug)
[root@localhost ~]# mkdir ~/.pip
[root@localhost ~]# cat > ~/.pip/pip.conf << EOF
[global]
trusted-host=mirrors.aliyun.com
index-url=https://mirrors.aliyun.com/pypi/simple/
EOF
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2.配置ssh

預設ssh_config啟用了DNS解析，導致每次遠端ssh時都特別慢

[root@localhost ~]# sed -i 's%#UseDNS yes%UseDNS no%' /etc/ssh/sshd_config 
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3.配置SElinux
如果要在Centos上開啟Cobbler的支援，需要用root使用者執行 setsebool ，注意 -P 引數確保重啟仍然生效。
同時需要配置SELinux上下文規則(CentOS 7 Minimal預設不安裝 semanage )，用於提供引導映象。
按照紅帽的5.4的教程，設定不生效，所以，禁用SELinux

#//.. setsebool -P httpd_can_network_connect true
#//.. yum provides semanage
#//.. yum -y install policycoreutils-python.x86_64
#//.. semanage fcontext -a -t public_content_t "/var/lib/tftpboot/.*"
[root@localhost ~]# sed -i '/SELINUX/s/enforcing/disabled/' /etc/selinux/config  
[root@localhost ~]# setenforce 0
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4.配置防火牆

# TFTP
[root@localhost ~]# firewall-cmd --zone=public --add-port=69/tcp --permanent
[root@localhost ~]# firewall-cmd --zone=public --add-port=69/udp --permanent

# HTTPD
[root@localhost ~]# firewall-cmd --zone=public --add-port=80/tcp --permanent
[root@localhost ~]# firewall-cmd --zone=public --add-port=443/tcp --permanent

# Cobbler
[root@localhost ~]# firewall-cmd --zone=public --add-port=25150/tcp --permanent
[root@localhost ~]# firewall-cmd --zone=public --add-port=25150/udp --permanent

# Koan 如果未用到，可以不開放
[root@localhost ~]# firewall-cmd --zone=public --add-port=25151/tcp --permanent

# samba window安裝需要用到samba,否則可以不開放
[root@localhost ~]# firewall-cmd --zone=public --add-port=139/tcp --permanent
[root@localhost ~]# firewall-cmd --zone=public --add-port=445/tcp --permanent
[root@localhost ~]# firewall-cmd --zone=public --add-port=137/udp --permanent
[root@localhost ~]# firewall-cmd --zone=public --add-port=138/udp --permanent

# 更新防火牆規則
[root@localhost ~]# firewall-cmd --reload

# 檢視所有開啟的埠
[root@localhost ~]# firewall-cmd --zone=public --list-ports
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安裝Cobbler

安裝依賴軟體

[root@localhost ~]# yum install -y cobbler cobbler-web dhcp tftp-server pykickstart httpd xinetd
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設定開機自啟動

[root@localhost ~]# systemctl enable httpd
[root@localhost ~]# systemctl enable xinetd
[root@localhost ~]# systemctl enable rsyncd
[root@localhost ~]# systemctl enable tftp
[root@localhost ~]# systemctl enable cobblerd
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啟動服務

[root@localhost ~]# systemctl start httpd
[root@localhost ~]# systemctl start xinetd
[root@localhost ~]# systemctl start tftp
[root@localhost ~]# systemctl start cobblerd
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檢查配置

[root@localhost ~]# 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 : change 'disable' to 'no' in /etc/xinetd.d/tftp
5 : 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.
6 : debmirror package is not installed, it will be required to manage debian deployments and repositories
7 : 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
8 : fencing tools were not found, and are required to use the (optional) power management features. install cman or fence-agents to use them

Restart cobblerd and then run 'cobbler sync' to apply changes.
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1,2：
cobbler_ip 為cobbler主機ip
next_server 是dhcp主機ip，但是本實驗dhcp和cobbler是一臺

[root@localhost ~]# export cobbler_ip=192.168.0.12
[root@localhost ~]# sed -i "s%^server: 127.0.0.1%server: ${cobbler_ip}%g" /etc/cobbler/settings
[root@localhost ~]# sed -i "s%^next_server: 127.0.0.1%next_server: ${cobbler_ip}%g" /etc/cobbler/settings
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3： 可以忽略，因為已經配置SELinux和防火牆了

4：開啟tftp功能

[root@localhost ~]# sed -i '/disable\>/s/\<yes\>/no/' /etc/xinetd.d/tftp
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5：下載bootload

[root@localhost ~]# cobbler get-loaders
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6：下載ubuntu本地包映象（不裝ubuntu的，可以不用改）

[root@localhost ~]# yum install -y debmirror
[root@localhost ~]# sed -i 's%^@dists="sid"%#@dists="sid"%g;s%@arches="i386"%#@arches="i386"%g' /etc/debmirror.conf
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7：設定安裝系統後的root密碼

[root@localhost ~]# export root_pwd=$(openssl passwd -1 -salt `openssl rand 15 -base64` 'Abcd1234!@#$')
[root@localhost ~]# sed -i "s%^default_password_crypted.*%default_password_crypted: \"${root_pwd}\"%g" /etc/cobbler/settings
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8：電源管理模組(非必選)，cman和ence-agents二選一即可,此處忽略

其餘修改：

[root@localhost ~]# sed -i "s%manage_dhcp: 0%manage_dhcp: 1%g" /etc/cobbler/settings
[root@localhost ~]# sed -i "s%pxe_just_once: 0%pxe_just_once: 1%g" /etc/cobbler/settings
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修改dhcp

[root@localhost ~]# vim /etc/cobbler/dhcp.template
\#僅列出修改過的部分
\......
subnet 192.168.0.0 netmask 255.255.255.0 {
     option routers             192.168.0.1;
     option domain-name-servers 192.168.0.1;
     option subnet-mask         255.255.255.0;
     range dynamic-bootp        192.168.0.100 192.168.0.200;
\......
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重啟服務

[root@localhost ~]# systemctl restart httpd
[root@localhost ~]# systemctl restart xinetd
[root@localhost ~]# systemctl restart tftp
[root@localhost ~]# systemctl restart cobblerd
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再次校驗,發現只有兩條資訊了，忽略即可。

[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 : fencing tools were not found, and are required to use the (optional) power management features. install cman or fence-agents to use them

Restart cobblerd and then run 'cobbler sync' to apply changes.
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執行 cobbler sync 同步資訊

[root@localhost ~]# cobbler sync
task started: 2019-02-22_184309_sync
task started (id=Sync, time=Fri Feb 22 18:43:09 2019)
running pre-sync triggers
# ....忽略
running python trigger cobbler.modules.scm_track
running shell triggers from /var/lib/cobbler/triggers/change/*
*** TASK COMPLETE ***
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cobbler-web

修復2.8.4 bug

開啟 https://${cobbler_ip}/cobbler_web 注意是 https 但是2.8.4有個bug，會導致開啟後報500 Internal Server Error 錯誤 ,是因為  django 版本太高了 (參加 cobbler 2.8.4/2.8.0 on centos 7 error )

[root@localhost ~]# yum install -y python-pip
[root@localhost ~]# pip2.7 install -U django==1.9.13
[root@localhost ~]# systemctl restart cobblerd
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設定使用者名稱密碼

預設使用者名稱密碼是 cobbler/cobbler

[root@localhost ~]# htdigest -c /etc/cobbler/users.digest Cobbler cobbler # 後邊這個是使用者名稱
[root@localhost ~]# systemctl restart cobblerd
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再次開啟 https://${cobbler_ip}/cobbler_web 

掛載映象

通過 winscp,mobaxterm等將ubuntu和centos映象上傳到Cobbler伺服器上的 /tmp/ 目錄下,其中 net.ifnames=0 biosdevname=0 noipv6 是讓網路卡統一命名成 eth0

[root@localhost ~]# mount -t iso9660 -o loop /tmp/CentOS-7-x86_64-Minimal-1810.iso /mnt/
[root@localhost ~]# cobbler import --name=CentOS-7.6.1810-x86_64 --path=/mnt/ --arch=x86_64
[root@localhost ~]# cobbler profile edit --name=CentOS-7.6.1810-x86_64 --kopts='net.ifnames=0 biosdevname=0'
[root@localhost ~]# mount -t iso9660 -o loop /tmp/ubuntu-16.04.5-server-amd64.iso /mnt/
[root@localhost ~]# cobbler import --name=ubuntu-16.04.5-server-x86_64 --path=/mnt/ --arch=x86_64
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測試PXE安裝系統

在vmware建立兩個虛擬機器(選擇空白盤),記憶體2G，CPU2核，磁碟20G，建立完後，記得打個快照，後邊做實驗失敗後，直接恢復即可。

選擇CentOS，然後回車，系統將自動安裝

優化配置

CentOS ks

[root@localhost ~]# cobbler profile report --name CentOS-7.6.1810-x86_64
Name                           : CentOS-7.6.1810-x86_64
#//...忽略
Kickstart                      : /var/lib/cobbler/kickstarts/sample_end.ks
#//...忽略
#//複製一份ks，並且進行修改
[root@localhost ~]# cp /var/lib/cobbler/kickstarts/sample_end.ks /var/lib/cobbler/kickstarts/centos-7-6.ks
[root@localhost ~]# cobbler profile edit --name CentOS-7.6.1810-x86_64  --kickstart=/var/lib/cobbler/kickstarts/centos-7-6.ks
[root@localhost ~]# cp /var/lib/cobbler/kickstarts/sample.seed /var/lib/cobbler/kickstarts/ubuntu-16-4-5.seed
[root@localhost ~]# cobbler profile edit --name ubuntu-16.04.5-server-x86_64  --kickstart=/var/lib/cobbler/kickstarts/ubuntu-16-4-5.seed 
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具體CentOS的ks語法可以參考這裡：KICKSTART 語法參考。另外可以參考 運維工作筆記-Cobbler 配置檔案
具體Ubuntu的Preseed可以參考這裡：Preseed語法參考。


吐槽一下，cobbler程式碼中檢測到是ubuntu時，會自動將ks換成url(強制走preseed)，而用慣了ks的，用preseed還是很不習慣的，可以看一下 Support selection of automatic installation file format in distros which allow it (Debian/Ubuntu allows kickstart and preseed) 和 Problems Provisioning Ubuntu with Cobbler and Kickstart Profiles
此處貼一下 /var/lib/cobbler/kickstarts/ubuntu-16-4-5.seed

# Mostly based on the Ubuntu installation guide
# https://help.ubuntu.com/16.04/installation-guide/
# Debian sample
# https://www.debian.org/releases/stable/example-preseed.txt

## Part 1. Localization

# Preseeding only locale sets language, country and locale.
d-i debian-installer/locale string en_US

# Keyboard selection.
# Disable automatic (interactive) keymap detection.
d-i console-setup/ask_detect boolean false
d-i keyboard-configuration/toggle select No toggling
d-i keyboard-configuration/layoutcode string us
d-i keyboard-configuration/variantcode string

## Part 2. Network configuration
# netcfg will choose an interface that has link if possible. This makes it
# skip displaying a list if there is more than one interface.
#set $myhostname = $getVar('hostname',$getVar('name','cobbler')).replace("_","-")
d-i netcfg/choose_interface select auto
d-i netcfg/get_hostname string $myhostname

# If non-free firmware is needed for the network or other hardware, you can
# configure the installer to always try to load it, without prompting. Or
# change to false to disable asking.
# d-i hw-detect/load_firmware boolean true

## Part 3 NTP/Time
# NTP/Time Setup
d-i time/zone string Asia/Shanghai
d-i clock-setup/utc boolean true
d-i clock-setup/ntp boolean true
d-i clock-setup/ntp-server  string ntp1.aliyun.com

## Part 4. Mirror settings
# Setup the installation source
d-i mirror/country string manual
d-i mirror/http/hostname string $http_server
d-i mirror/http/directory string $install_source_directory
d-i mirror/http/proxy string

#set $os_v = $getVar('os_version','')
#if $breed == "ubuntu" and $os_v and ($os_v.lower()[0] > 'p' or $os_v.lower()[0] < 'd')
# Required at least for ubuntu 12.10+ , so test os_v is higher than precise and lower than drapper
d-i live-installer/net-image string http://$http_server/cobbler/links/$distro_name/install/filesystem.squashfs
#end if

# Suite to install.
# d-i mirror/suite string precise
# d-i mirror/udeb/suite string precise

# Components to use for loading installer components (optional).
#d-i mirror/udeb/components multiselect main, restricted

## Part 4. Partitioning

# Disk Partitioning
# Use LVM, and wipe out anything that already exists
d-i partman/choose_partition select finish
d-i partman/confirm boolean true
d-i partman/confirm_nooverwrite boolean true
d-i partman-auto/method string lvm
d-i partman-lvm/device_remove_lvm boolean true
d-i partman-lvm/confirm boolean true
d-i partman-lvm/confirm_nooverwrite boolean true
d-i partman-md/device_remove_md boolean true
d-i partman-partitioning/confirm_write_new_label boolean true

# You can choose one of the three predefined partitioning recipes:
# - atomic: all files in one partition
# - home:   separate /home partition
# - multi:  separate /home, /usr, /var, and /tmp partitions
d-i partman-auto/choose_recipe select atomic

# If you just want to change the default filesystem from ext3 to something
# else, you can do that without providing a full recipe.
# d-i partman/default_filesystem string ext4

## Part 5. Account setup

# root account and password
d-i passwd/root-login boolean true
d-i passwd/root-password-crypted password $default_password_crypted

# skip creation of a normal user account.
d-i passwd/make-user boolean true
d-i passwd/user-fullname  string anjia
d-i passwd/username       string anjia
d-i passwd/user-password-crypted password $default_password_crypted

## Part 6. Apt setup

# You can choose to install restricted and universe software, or to install
# software from the backports repository.
# d-i apt-setup/restricted boolean true
# d-i apt-setup/universe boolean true
# d-i apt-setup/backports boolean true

# Uncomment this if you don't want to use a network mirror.
# d-i apt-setup/use_mirror boolean true

# Select which update services to use; define the mirrors to be used.
# Values shown below are the normal defaults.
# d-i apt-setup/services-select multiselect security
# d-i apt-setup/security_host string mirrors.aliyun.com
# d-i apt-setup/security_path string /ubuntu

$SNIPPET('preseed_apt_repo_config')

# Enable deb-src lines
# d-i apt-setup/local0/source boolean true

# URL to the public key of the local repository; you must provide a key or
# apt will complain about the unauthenticated repository and so the
# sources.list line will be left commented out
# d-i apt-setup/local0/key string http://local.server/key

# By default the installer requires that repositories be authenticated
# using a known gpg key. This setting can be used to disable that
# authentication. Warning: Insecure, not recommended.
# d-i debian-installer/allow_unauthenticated boolean true

## Part 7. Package selection
# Default for minimal
tasksel tasksel/first multiselect standard
# Default for server
# tasksel tasksel/first multiselect standard, web-server
# Default for gnome-desktop
# tasksel tasksel/first multiselect standard, gnome-desktop

# Individual additional packages to install
# wget is REQUIRED otherwise quite a few things won't work
# later in the build (like late-command scripts)
d-i pkgsel/include string ntp ssh wget 

# Debian needs this for the installer to avoid any question for grub
# Please verify that it suit your needs as it may overwrite any usb stick
#if $breed == "debian"
d-i grub-installer/grub2_instead_of_grub_legacy boolean true
d-i grub-installer/bootdev string default
#end if

# Use the following option to add additional boot parameters for the
# installed system (if supported by the bootloader installer).
# Note: options passed to the installer will be added automatically.
d-i debian-installer/add-kernel-opts string $kernel_options_post

# Avoid that last message about the install being complete.
d-i finish-install/reboot_in_progress note

## Figure out if we're kickstarting a system or a profile
#if $getVar('system_name','') != ''
#set $what = "system"
#else
#set $what = "profile"
#end if

# This first command is run as early as possible, just after preseeding is read.
# d-i preseed/early_command string [command]
d-i preseed/early_command string wget -O- \
   http://$http_server/cblr/svc/op/script/$what/$name/?script=preseed_early_default | \
   /bin/sh -s

# This command is run immediately before the partitioner starts. It may be
# useful to apply dynamic partitioner preseeding that depends on the state
# of the disks (which may not be visible when preseed/early_command runs).
# d-i partman/early_command \
#       string debconf-set partman-auto/disk "\$(list-devices disk | head -n1)"

# This command is run just before the install finishes, but when there is
# still a usable /target directory. You can chroot to /target and use it
# directly, or use the apt-install and in-target commands to easily install
# packages and run commands in the target system.
# d-i preseed/late_command string [command]
d-i preseed/late_command string wget -O- \
   http://$http_server/cblr/svc/op/script/$what/$name/?script=preseed_late_default | \
   chroot /target /bin/sh -s
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建立snippets

安裝完後，自動安裝軟體,參考 Using template scripts for Debian and Ubuntu seeds

[root@localhost ~]# tee /var/lib/cobbler/snippets/ubuntu_apt_install_soft <<-'EOF'

apt-get update
apt-get install -y language-pack-zh-hans apt-transport-https ca-certificates software-properties-common  git ansible openssh-server vim curl htop iotop iftop ncdu

curl -fsSL http://mirrors.aliyun.com/docker-ce/linux/ubuntu/gpg | sudo apt-key add -
sudo add-apt-repository "deb [arch=amd64] http://mirrors.aliyun.com/docker-ce/linux/ubuntu $(lsb_release -cs) stable"
apt-get update

apt-get install -y docker-ce=18.06.2~ce~3-0~ubuntu
apt-mark hold docker-ce
systemctl enable docker
EOF

## // d-i preseed/late_command 階段執行
[root@localhost ~]# echo '$SNIPPET("ubuntu_apt_install_soft") >> /var/lib/cobbler/snippets/late_apt_repo_config
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設定ubuntu package repo

[root@localhost ~]# cobbler repo add --name=ubuntu-16.04.5-server-x86_64 --arch=x86_64 --breed=apt --mirror=http://mirrors.aliyun.com/ubuntu --owners=admin --mirror-locally=False --apt-components='main universe' --apt-dists='xenial xenial-updates xenial-security'
[root@localhost ~]# cobbler profile edit --name=ubuntu-16.04.5-server-x86_64 --repos=ubuntu-16.04.5-server-x86_64
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限於篇幅，下一篇，將介紹Cobbler安裝Windows

常見錯誤

[root@localhost ~]# cobbler check
cobblerd does not appear to be running/accessible: error(111, 'Connection refused') 
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原因：未啟動相關服務

[root@localhost ~]# 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 1591, 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>
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未關閉防火牆

[root@localhost ~]# cobbler sync
received on stderr: Redirecting to /bin/systemctl restart dhcpd.service
Job for dhcpd.service failed because the control process exited with error code. See "systemctl status dhcpd.service" and "journalctl -xe" for details.

Exception occured: <class 'cobbler.cexceptions.CX'>
Exception value: 'cobbler trigger failed: cobbler.modules.sync_post_restart_services'
Exception Info:
  File "/usr/lib/python2.7/site-packages/cobbler/remote.py", line 82, in run
    rc = self._run(self)
   File "/usr/lib/python2.7/site-packages/cobbler/remote.py", line 181, in runner
    return self.remote.api.sync(self.options.get("verbose",False),logger=self.logger)
   File "/usr/lib/python2.7/site-packages/cobbler/api.py", line 763, in sync
    return sync.run()
   File "/usr/lib/python2.7/site-packages/cobbler/action_sync.py", line 144, in run
    utils.run_triggers(self.api, None, "/var/lib/cobbler/triggers/sync/post/*", logger=self.logger)
   File "/usr/lib/python2.7/site-packages/cobbler/utils.py", line 928, in run_triggers
    raise CX("cobbler trigger failed: %s" % m.__name__)

!!! TASK FAILED !!!
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沒改dhcp模板，導致sync同步出問題

[root@localhost ~]# cat /var/log/httpd/ssl_error_log
[Fri Feb 22 20:07:49.460442 2019] [:error] [pid 6910] [remote 127.0.0.1:204] mod_wsgi (pid=6910): Exception occurred processing WSGI script '/usr/share/cobbler/web/cobbler.wsgi'.
[Fri Feb 22 20:07:49.460559 2019] [:error] [pid 6910] [remote 127.0.0.1:204] Traceback (most recent call last):
[Fri Feb 22 20:07:49.460605 2019] [:error] [pid 6910] [remote 127.0.0.1:204]   File "/usr/share/cobbler/web/cobbler.wsgi", line 26, in application
[Fri Feb 22 20:07:49.460668 2019] [:error] [pid 6910] [remote 127.0.0.1:204]     _application = get_wsgi_application()
[Fri Feb 22 20:07:49.460684 2019] [:error] [pid 6910] [remote 127.0.0.1:204]   File "/usr/lib/python2.7/site-packages/django/core/wsgi.py", line 13, in get_wsgi_application
[Fri Feb 22 20:07:49.460723 2019] [:error] [pid 6910] [remote 127.0.0.1:204]     django.setup(set_prefix=False)
[Fri Feb 22 20:07:49.460737 2019] [:error] [pid 6910] [remote 127.0.0.1:204]   File "/usr/lib/python2.7/site-packages/django/__init__.py", line 22, in setup
[Fri Feb 22 20:07:49.460768 2019] [:error] [pid 6910] [remote 127.0.0.1:204]     configure_logging(settings.LOGGING_CONFIG, settings.LOGGING)
[Fri Feb 22 20:07:49.460781 2019] [:error] [pid 6910] [remote 127.0.0.1:204]   File "/usr/lib/python2.7/site-packages/django/conf/__init__.py", line 56, in __getattr__
[Fri Feb 22 20:07:49.460812 2019] [:error] [pid 6910] [remote 127.0.0.1:204]     self._setup(name)
[Fri Feb 22 20:07:49.460824 2019] [:error] [pid 6910] [remote 127.0.0.1:204]   File "/usr/lib/python2.7/site-packages/django/conf/__init__.py", line 41, in _setup
[Fri Feb 22 20:07:49.460852 2019] [:error] [pid 6910] [remote 127.0.0.1:204]     self._wrapped = Settings(settings_module)
[Fri Feb 22 20:07:49.460871 2019] [:error] [pid 6910] [remote 127.0.0.1:204]   File "/usr/lib/python2.7/site-packages/django/conf/__init__.py", line 110, in __init__
[Fri Feb 22 20:07:49.460900 2019] [:error] [pid 6910] [remote 127.0.0.1:204]     mod = importlib.import_module(self.SETTINGS_MODULE)
[Fri Feb 22 20:07:49.460911 2019] [:error] [pid 6910] [remote 127.0.0.1:204]   File "/usr/lib64/python2.7/importlib/__init__.py", line 37, in import_module
[Fri Feb 22 20:07:49.460953 2019] [:error] [pid 6910] [remote 127.0.0.1:204]     __import__(name)
[Fri Feb 22 20:07:49.460973 2019] [:error] [pid 6910] [remote 127.0.0.1:204]   File "/usr/share/cobbler/web/settings.py", line 89, in <module>
[Fri Feb 22 20:07:49.460995 2019] [:error] [pid 6910] [remote 127.0.0.1:204]     from django.conf.global_settings import TEMPLATE_CONTEXT_PROCESSORS
[Fri Feb 22 20:07:49.461043 2019] [:error] [pid 6910] [remote 127.0.0.1:204] ImportError: cannot import name TEMPLATE_CONTEXT_PROCESSORS
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pip2.7 install -U django==1.9.13

參考資料

• 配置防火牆
• cobbler 2.8.4/2.8.0 on centos 7 error
• KICKSTART 語法參考
• 運維工作筆記-Cobbler 配置檔案
• Preseed語法參考
• Support selection of automatic installation file format in distros which allow it (Debian/Ubuntu allows kickstart and preseed) 
• Problems Provisioning Ubuntu with Cobbler and Kickstart Profiles
• Using template scripts for Debian and Ubuntu seeds

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