linux cobbler 自动安装centos6与centos7系统

1.1 Cobbler介绍

Cobbler 是一个免费开源系统安装部署软件，用于自动化网络安装操作系统。
Cobbler 集成了 DNS, DHCP, 软件包更新，带外管理以及配置管理，方便操作系统安装自动化。
Cobbler 可以支持PXE启动, 操作系统重新安装,以及虚拟化客户机创建，包括Xen, KVM or VMware.
Cobbler 透过koan程序以支持虚拟化客户机安装。
Cobbler 可以支持管理复杂网路环境，如建立在链路聚合以太网的桥接环境。

1.2 cobbler 服务集成

1 pxe 服务
2 DHCP
3 Rsync
4 HTTP
5 DNS
6 Kickstart
7 IPMI    电源管理

1.3 cobbler的设计方式

发行版（distro） ：表示一个操作系统，它承载了内核和initrd的信息，以及内核等其他数据
存储库 （repository）：保存了一个yum或者rsync存储库的镜像信息
配置文件（profile）：包含了一个发行版（distro），一个kickstart文件以及可能的存储库（repository），还包含了更多的内核参数等其他数据
系统（system）：表示要配给的机器，它包含了一个配置文件或一个镜像，还包含了ip和mac地址，电源管理（地址,凭据,类型）以及更为专业的数据信息
镜像（image）：可替换一个包含不属于此类别的文件的发行版对象（eg: 无法为内核和initrd的对象）

以上各个组件中， 发行版，存储库， 配置文件为必须配置项
只有在虚拟环境中，必须要用cobbler来引导虚拟机启动时候，才会用到系统组件
但事实上，在生产环境中需要大量的虚拟机实例的话，通常利用openstack等来实现虚拟机节点
1.4 cobbler 运行的流程

-  DHCP
-  Client      (从dhcp服务器获取地址，访问next_server的ip地址)
-  Next_server （获取启动内核，initrd等文件）
-  tftp      （pxe引导文件 启动cobbler选择界面）
-  kickstart    （确定加载项，根据nfs，http，ftp等共享）

1.5 cobbler units

- cobbler
- cobbler-web

2.1 准备环境

1 安装cobbler 依据cobbler check检查结果，对setting主配置文件的设置，进行相关的修正设置

2 启动先相关的httpd cobbler服务，使用cobbler rsync 同步设置

3 配置 cobbler 所依赖的服务

dhcp: isc dhcpd ， dnsmasq （必须服务，选择其一管理即可）

dns: bing ， dnsmasq （可选）

rysnc: rsync （必须服务）

tftp: in，tftp（tftp-server） ，cobbler自带的tftp（必须服务 ，选择其中其一管理即可）
4 安装epel源

[root@kvm ~]# yum install -y wget
[root@kvm ~]# wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-6.repo[/code]    5 设置ip转发
[root@kvm ~]# echo 1 > /proc/sys/net/ipv4/ip_forward
[root@kvm ~]# sed -i 's/net.ipv4.ip_forward = 0/net.ipv4.ip_forward = 1/' /etc/sysctl.conf
[root@kvm ~]# sysctl -p


2.2 安装Cobbler

[root@kvm ~]#yum -y install cobbler dhcp httpd xinetd tftp-server syslinux pykickstart xinetd rsync cobbler-web


2.3 调整为动态配置Cobbler

动态更新配置
对于Cobbler2.4来说，有一个重要的功能，就是让你可以不需要手工去编辑setting配置文件，直接使用命令去修改，默认这个功能是不启用，你需要启用。
[root@kvm cobbler]# cp settings  settings.bak
[root@kvm cobbler]# sed -i 's/^[[:space:]]\+/ /' /etc/cobbler/settings [root@kvm cobbler]# sed -i 's/allow_dynamic_settings: 0/allow_dynamic_settings: 1/g' /etc/cobbler/settings
[root@kvm cobbler]# /etc/init.d/cobblerd restart
Stopping cobbler daemon:                                   [  OK  ]
Starting cobbler daemon:                                   [  OK  ]


2.4 检查需要安装的配置
[root@note1 ~]# 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 : change 'disable' to 'no' in /etc/xinetd.d/tftp
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 : since iptables may be running, ensure 69, 80/443, and 25151 are unblocked
7 : reposync is not installed, need for cobbler reposync, install/upgrade yum-utils?
8 : debmirror package is not installed, it will be required to manage debian deployments and repositories
9 : 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
10 : fencing tools were not found, and are required to use the (optional) power management features. install cman or fence-agents to use them
#解决方法

[root@kvm cobbler]# cobbler setting edit --name=server --value=10.10.10.10
2: [root@kvm cobbler]# cobbler setting edit --name=next_server --value=10.10.10.10
3: 可以忽略
4: [root@note1 loaders]# openssl passwd -1 -salt `openssl rand -hex 4` "budongshu"
$1$557d907c$AmKQun9Jxitt1D6aQ8DUC.
[root@kvm cobbler]# cobbler setting  edit --name=default_password_crypted \
> --value="$1$557d907c$AmKQun9Jxitt1D6aQ8DUC."
5: [root@kvm cobbler]# yum install cman        #安装电源管理工具
#开机启动
[root@note1 cobbler]# chkconfig tftp on
[root@note1 cobbler]# chkconfig rsync on
[root@note1 cobbler]# /etc/init.d/xinetd restart
#下载启动菜单
[root@note1 cobbler]# cobbler get-loaders
#防止误重装系统 选项 pxe_just_one
[root@note1 cobbler]# cobbler setting edit --name=pxe_just_once --value=1
#开启cobbler 管理dhcp服务器
[root@note1 cobbler]# cobbler setting edit --name=manage_dhcp --value="1"

2.5 同步cobbler
[root@kvm cobbler]# service cobblerd restart
Stopping cobbler daemon:                                   [  OK  ]
Starting cobbler daemon:                                   [  OK  ]
[root@kvm cobbler]# cobbler sync
task started: 2015-11-06_094656_sync
task started (id=Sync, time=Fri Nov  6 09:46:56 2015)
running pre-sync triggerscleaning treesremoving: /var/lib/tftpboot/grub/imagescopying bootloaders
trying hardlink /var/lib/cobbler/loaders/pxelinux.0 -> /var/lib/tftpboot/pxelinux.0
trying hardlink /var/lib/cobbler/loaders/menu.c32 -> /var/lib/tftpboot/menu.c32
trying hardlink /var/lib/cobbler/loaders/yaboot -> /var/lib/tftpboot/yaboot
trying hardlink /usr/share/syslinux/memdisk -> /var/lib/tftpboot/memdisk
trying hardlink /var/lib/cobbler/loaders/grub-x86_64.efi -> /var/lib/tftpboot/grub/grub-x86_64.efi
trying hardlink /var/lib/cobbler/loaders/grub-x86.efi -> /var/lib/tftpboot/grub/grub-x86.efi
copying distros to tftpboot
copying imagesgenerating PXE configuration files
generating PXE menu structurerendering TFTPD files
generating /etc/xinetd.d/tftpcleaning link caches
running post-sync triggersrunning 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 ***
重启
[root@kvm cobbler]# service cobblerd restart
Stopping cobbler daemon:                                         [  OK  ]
Starting cobbler daemon:                                         [  OK  ]
再次检查
[root@kvm cobbler]# cobbler check
The following are potential configuration items that you may want to fix:
1 : debmirror package is not installed, it will be required to manage debian deployments and repositoriesRestart
cobblerd and then run 'cobbler sync' to apply changes.
#上面配置成功


2.6 配置dhcp服务
[root@note1 cobbler]# vim /etc/cobbler/dhcp.template
#其他需要动，只修改下面的几个内容
subnet 10.10.10.0 netmask 255.255.255.0 {
option routers             10.10.10.10;
option domain-name-servers 114.114.114.114;
option subnet-mask         255.255.255.0;
range dynamic-bootp        10.10.10.20 10.10.10.50;
default-lease-time         21600;
max-lease-time             43200;
next-server                $next_server;
......

此时的dhcpd的配置就被cobbler覆盖,由cobbler来管理配置文件,截取的一部分,后面还有内容
[root@note1 cobbler]# vim  /etc/dhcp/dhcpd.conf

# ******************************************************************
# Cobbler managed dhcpd.conf file
# generated from cobbler dhcp.conf template (Sun Jan 31 15:47:49 2016)
# Do NOT make changes to /etc/dhcpd.conf. Instead, make your changes
# in /etc/cobbler/dhcp.template, as /etc/dhcpd.conf will be
# overwritten.
# ******************************************************************

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 10.10.10.0 netmask 255.255.255.0 {
......
......
......
编写启动脚本
cat >>/etc/init.d/cobbler<<EOF
#!/bin/bash
# chkconfig: 345 80 90
# description:cobbler
case \$1 in
start)
/etc/init.d/httpd start
/etc/init.d/xinetd start
/etc/init.d/dhcpd start
/etc/init.d/cobblerd start
;;
stop)
/etc/init.d/httpd stop
/etc/init.d/xinetd stop
/etc/init.d/dhcpd stop
/etc/init.d/cobblerd stop
;;
restart)
/etc/init.d/httpd restart
/etc/init.d/xinetd restart
/etc/init.d/dhcpd restart
/etc/init.d/cobblerd restart
;;
status)
/etc/init.d/httpd status
/etc/init.d/xinetd status
/etc/init.d/dhcpd status
/etc/init.d/cobblerd status
;;
sync)
cobbler sync
;;
*)
echo "Input error,please in put 'start|stop|restart|status|sync'!"
exit 2
;;
esac
EOF
# chmod +x /etc/init.d/cobbler
# chkconfig cobbler on


2.7 配置ks文件

[root@linux-node1 ~]# cobbler   #cobbler命令
usage
=====
cobbler <distro|profile|system|repo|image|mgmtclass|package|file> ...
[add|edit|copy|getks*|list|remove|rename|report] [options|--help]
cobbler <aclsetup|buildiso|import|list|replicate|report|reposync|sync|validateks|version|signature|get-loaders|hardlink> [options|--help]
[root@linux-node1 ~]# cobbler import --help  # 导入镜像
Usage: cobbler [options]
Options:
-h, --help            show this help message and exit
--arch=ARCH           OS architecture being imported
--breed=BREED         the breed being imported
--os-version=OS_VERSION
the version being imported
--path=PATH           local path or rsync location
--name=NAME           name, ex 'RHEL-5'
--available-as=AVAILABLE_AS
tree is here, don't mirror
--kickstart=KICKSTART_FILE
assign this kickstart file
--rsync-flags=RSYNC_FLAGS
pass additional flags to rsync
cobbler check    核对当前设置是否有问题
cobbler list     列出所有的cobbler元素
cobbler report   列出元素的详细信息
cobbler sync     同步配置到数据目录,更改配置最好都要执行下
cobbler reposync 同步yum仓库
cobbler distro   查看导入的发行版系统信息
cobbler system   查看添加的系统信息
cobbler profile  查看配置信息


2.8 导入系统到cobbler
centos6.5

[root@kvm cobbler]# mount /dev/cdrom  /mnt
[root@note1 cobbler]# cobbler import --path=/mnt/ --name=Centos-6.5-x86_64 --arch=x86_64
[root@note1 cobbler]# cobbler distro report --name=Centos-6.5-x86_64
Name                           : Centos-6.5-x86_64
Architecture                   : x86_64
TFTP Boot Files                : {}
Breed                          : redhat
Comment                        :
Fetchable Files                : {}
Initrd                         : /var/www/cobbler/ks_mirror/Centos-6.5-x86_64/images/pxeboot/initrd.img
Kernel                         : /var/www/cobbler/ks_mirror/Centos-6.5-x86_64/images/pxeboot/vmlinuz
Kernel Options                 : {}
Kernel Options (Post Install)  : {}
Kickstart Metadata             : {'tree': '
Management Classes             : []
OS Version                     : rhel6
Owners                         : ['admin']
Red Hat Management Key         : <<inherit>>
Red Hat Management Server      : <<inherit>>
Template Files                 : {}


centos7
[root@note1 ~]# umount /mnt
[root@note1 cobbler]# cobbler import --path=/mnt/ --name=Centos-7-x86_64 --arch=x86_64
[root@note1 kickstarts]# cobbler distro report --name=Centos-7-x86_64
Name                           : Centos-7-x86_64
Architecture                   : x86_64
TFTP Boot Files                : {}
Breed                          : redhat
Comment                        :
Fetchable Files                : {}
Initrd                         : /var/www/cobbler/ks_mirror/Centos-7-x86_64/images/pxeboot/initrd.img
Kernel                         : /var/www/cobbler/ks_mirror/Centos-7-x86_64/images/pxeboot/vmlinuz
Kernel Options                 : {}
Kernel Options (Post Install)  : {}
Kickstart Metadata             : {'tree': 'http://@@http_server@@/cblr/links/Centos-7-x86_64'}
Management Classes             : []
OS Version                     : rhel7
Owners                         : ['admin']
Red Hat Management Key         : <<inherit>>
Red Hat Management Server      : <<inherit>>
Template Files                 : {}
[root@note1 cobbler]# cobbler distro list
Centos-6.5-x86_64
Centos-7-x86_64

2.9 修改默认ks文件

#配置centos6.5
[root@note1 kickstarts]#cd /var/lib/cobbler/kickstarts/
[root@note1 kickstarts]#cp sample_end.ks   CentOS-6.5-x86_64.cfg
[root@note1 kickstarts]#cobbler profile edit --name=Centos-6.5-x86_64 --kickstart=/var/lib/cobbler/kickstarts/CentOS-6.5-x86_64.cfg
[root@note1 kickstarts]# cat CentOS-6.5-x86_64.cfg
# kickstart template for Fedora 8 and later.
# (includes %end blocks)
# do not use with earlier distros

#platform=x86, AMD64, or Intel EM64T
# System authorization information
auth  --useshadow  --enablemd5
# System bootloader configuration
bootloader --location=mbr
# Partition clearing information
clearpart --all --initlabel
# Use text mode install
text
# Firewall configuration
firewall --enabled
# Run the Setup Agent on first boot
firstboot --disable
# System keyboard
keyboard us
# System language
lang en_US
# Use network installation
url --url=$tree
# If any cobbler repo definitions were referenced in the kickstart profile, include them here.
$yum_repo_stanza
# Network information
$SNIPPET('network_config')
# Reboot after installation
reboot

#Root password
rootpw --iscrypted $default_password_crypted
# SELinux configuration
selinux --disabled
# Do not configure the X Window System
skipx
# System timezone
timezone  America/New_York
# Install OS instead of upgrade
install
# Clear the Master Boot Record
zerombr
# Allow anaconda to partition the system as needed
autopart

%pre
$SNIPPET('log_ks_pre')
$SNIPPET('kickstart_start')
$SNIPPET('pre_install_network_config')
# Enable installation monitoring
$SNIPPET('pre_anamon')
%end

%packages
$SNIPPET('func_install_if_enabled')
%end

%post --nochroot
$SNIPPET('log_ks_post_nochroot')
%end

%post
$SNIPPET('log_ks_post')
# Start yum configuration
$yum_config_stanza
# End yum configuration
$SNIPPET('post_install_kernel_options')
$SNIPPET('post_install_network_config')
$SNIPPET('func_register_if_enabled')
$SNIPPET('download_config_files')
$SNIPPET('koan_environment')
$SNIPPET('redhat_register')
$SNIPPET('cobbler_register')
# Enable post-install boot notification
$SNIPPET('post_anamon')
# Start final steps
$SNIPPET('kickstart_done')
# End final steps

#配置centos7
[root@note1 kickstarts]#cobbler profile edit --name=Centos-7-x86_64 --kickstart=/var/lib/cobbler/kickstarts/CentOS-7-x86_64.cfg
[root@note1 kickstarts]# cat CentOS-7-x86_64.cfg
#obbler for Kickstart Configurator for CentOS 7.1 by yao zhang
install
url --url=$tree
text
lang en_US.UTF-8
keyboard us
zerombr
bootloader --location=mbr
# Network information
$SNIPPET('network_config')
timezone --utc Asia/Shanghai
authconfig --enableshadow --passalgo=sha512
rootpw  --iscrypted $default_password_crypted
clearpart --all --initlabel
part /boot --fstype xfs --size 500
part swap --size 2000
part / --fstype xfs --size 20000
part /data --fstype xfs --size 30000
firstboot --disable
selinux --disabled
firewall --disabled
logging --level=info
reboot
%pre
$SNIPPET('log_ks_pre')
$SNIPPET('kickstart_start')
$SNIPPET('pre_install_network_config')
# Enable installation monitoring
$SNIPPET('pre_anamon')
%end
%packages
@base
@compat-libraries
@debugging
@development
tree
nmap
sysstat
lrzsz
dos2unix
telnet
iptraf
ncurses-devel
openssl-devel
zlib-devel
OpenIPMI-tools
screen
%end
%post
systemctl disable postfix.service

#修改centos7 网卡label

# 修改安装系统的内核参数，在CentOS7系统有一个地方变了，就是网卡名变成eno16777736这种形式，但是为了运维标准化，

#我们需要将它变成我们常用的eth0，因此使用下面的参数。但要注意是CentOS7才需要下面的步骤，CentOS6不需要。

[root@note1 kickstarts]# cobbler profile edit --name=CentOS-7.1-x86_64 --kopts='net.ifnames=0 biosdevname=0'
[root@note1 kickstarts]# cobbler profile report --name=CentOS-7-x86_64
Name                           : CentOS-7-x86_64
TFTP Boot Files                : {}
Comment                        :
DHCP Tag                       : default
Distribution                   : Centos-7-x86_64
Enable gPXE?                   : 0
Enable PXE Menu?               : 1
Fetchable Files                : {}
Kernel Options                 : {'biosdevname': '0', 'net.ifnames': '0'}
Kernel Options (Post Install)  : {}
Kickstart                      : /var/lib/cobbler/kickstarts/CentOS-7-x86_64.cfg
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


#查看
[root@note1 kickstarts]# cobbler profile report  Centos-7-x86_64
[root@note1 kickstarts]# cobbler profile report  Centos-6.5-x86_64
[root@note1 kickstarts]# cobbler list
distros:   Centos-6.5-x86_64   Centos-7-x86_64
profiles:   Centos-6.5-x86_64   Centos-7-x86_64
systems:   budongshu
repos:
images:
mgmtclasses:
packages:
files:


#配置本地yum仓库 可以忽略

[root@localhost ~]# mkdir /tmp/rpms
[root@localhost ~]# createrepo /tmp/rpms  #放入rpm包,执行此步骤
[root@localhost ~]# cobbler repo add --mirror=/tmp/rpms --name=local
[root@localhost ~]# cobbler reposync


#配置本地epel仓库 可以忽略

[root@localhost ~]# cobbler repo add --mirror=http://mirrors.aliyun.com/epel/6/x86_64/ --name=epel
[root@localhost ~]# cobbler reposync --tries=3 --no-fail  #同步epel仓库到本地,需要较长时间#查看已添加的repo
[root@localhost ~]# cobbler repo list   epel   local


#添加repo到profile 可以忽略

[root@localhost ~]# cobbler profile edit --name=Centos-6.5-x86_64 --repos="epel local"
[root@localhost ~]# cobbler sync


#绑定mac地址 ,实现开机自动选择





#配置绑定mac地址和IP地址 ,开机自动选择

cobbler system add --name=budongshu --mac=00:0C:29:48:1D:75 --profile=Centos-7-x86_64  \--ip-address=10.10.10.23 --subnet=255.255.255.0 --gateway=10.10.10.10 --interface=eth0 \--static=1 --hostname=budongshu --name-servers="114.114.114.114 8.8.8.8"


3.0 配置cobbler web界面

cobbler-web支持多种认证方式，如authn_configfil、authn_ldap或authn_pam等，下面我们基于authn_pam做认证

#修改认证方式
[root@note1 web]# vim /etc/cobbler/modules.conf
[authentication]
module = authn_pam

添加系统用户
[root@note1 web]# useradd cobbler
[root@note1 web]# echo "cobbler" | passwd --stdin cobbler

添加用户到管理组
[root@note1 web]# vim /etc/cobbler/modules.conf
[admins]
admin = "cobbler"

重启服务

Stopping cobbler daemon:                                     [  OK  ]
Starting cobbler daemon:                                     [  OK  ]

[root@note1 web]# service httpd restart
Stopping httpd:                                               [  OK  ]
Starting httpd:                                               [  OK  ]