使用Cobbler无人值守安装CentOS6.5(一)

Cobbler是一个快速网络安装linux的服务，而且在经过调整也可以支持网络安装windows。该工具使用python开发，小巧轻便（才15k行代码），使用简单的命令即可完成PXE网络安装环境的配置，同时还可以管理DHCP，DNS，以及yum包镜像。

我用的系统是Centos6.5 64 位

配置epel  yum源

我这用阿里云的epel


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mv /etc/yum.repos.d/epel.repo /etc/yum.repos.d/epel.repo.backup

wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-6.repo

安装cobbler需要的服务


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yum install dhcp tftp rsync xinetd httpd

关闭selinux和防火墙自己做测试为了不影响就关了


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[[email protected] upimg]# setenforce 0

[[email protected]i51 upimg]# service  iptables stop

安装cobbler并启动


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[[email protected] yum.repos.d]# yum install cobbler -y

[[email protected] yum.repos.d]# /etc/init.d/cobblerd start

Starting cobbler daemon:                                   [  OK  ]

[[email protected] yum.repos.d]# /etc/init.d/httpd start

Starting httpd:

检查配置执行


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[[email protected] ~]# cobbler check

Traceback (most recent call last):

  File "/usr/bin/cobbler", line 36, in <module>

    sys.exit(app.main())

  File "/usr/lib/python2.6/site-packages/cobbler/cli.py", line 655, in main

    rc = cli.run(sys.argv)

  File "/usr/lib/python2.6/site-packages/cobbler/cli.py", line 270, in run

    self.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 __request

    verbose=self.__verbose

  File "/usr/lib64/python2.6/xmlrpclib.py", line 1253, in request

    return self._parse_response(h.getfile(), sock)

  File "/usr/lib64/python2.6/xmlrpclib.py", line 1392, in _parse_response

    return u.close()

  File "/usr/lib64/python2.6/xmlrpclib.py", line 838, in close

    raise Fault(**self._stack[0])

xmlrpclib.Fault: <Fault 1: "<class ‘cobbler.cexceptions.CX‘>:‘login failed‘">

报错了

经过网上查找这样解决如下：


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[[email protected] ~]# service cobblerd restart

Stopping cobbler daemon:                                   [  OK  ]

Starting cobbler daemon:                                   [  OK  ]

[[email protected] ~]# cobbler get-loaders

task started: 2014-10-23_131316_get_loaders

task started (id=Download Bootloader Content, time=Thu Oct 23 13:13:16 2014)

downloading http://www.cobblerd.org/loaders/README to /var/lib/cobbler/loaders/README

downloading http://www.cobblerd.org/loaders/COPYING.elilo to /var/lib/cobbler/loaders/COPYING.elilo

downloading http://www.cobblerd.org/loaders/COPYING.yaboot to /var/lib/cobbler/loaders/COPYING.yaboot

downloading http://www.cobblerd.org/loaders/COPYING.syslinux to /var/lib/cobbler/loaders/COPYING.syslinux

downloading http://www.cobblerd.org/loaders/elilo-3.8-ia64.efi to /var/lib/cobbler/loaders/elilo-ia64.efi

downloading http://www.cobblerd.org/loaders/yaboot-1.3.14-12 to /var/lib/cobbler/loaders/yaboot

downloading http://www.cobblerd.org/loaders/pxelinux.0-3.86 to /var/lib/cobbler/loaders/pxelinux.0

downloading http://www.cobblerd.org/loaders/menu.c32-3.86 to /var/lib/cobbler/loaders/menu.c32

downloading http://www.cobblerd.org/loaders/grub-0.97-x86.efi to /var/lib/cobbler/loaders/grub-x86.efi

downloading http://www.cobblerd.org/loaders/grub-0.97-x86_64.efi to /var/lib/cobbler/loaders/grub-x86_64.efi

*** TASK COMPLETE ***

在检查配置


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[[email protected] ~]# 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/rsync

4 : debmirror package is not installed, it will be required to manage debian deployments and repositories

5 : ksvalidator was not found, install pykickstart

6 : 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

7 : 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.

上面这段信息大意就是：

1，编辑/etc/cobbler/settings文件，找到 server选项，修改为适当的ip地址，本实例配置ip为：192.168.1.243

2，编辑/etc/cobbler/settings文件，找到 next_server选项，修改为适当的ip地址，本实例配置ip为：192.168.1.243

3，编辑/etc/xinetd.d/rsync文件，将文件中的disable字段的配置由yes改为no

4，提示说debmirror没安装。如果不是安装 debian之类的系统，此提示可以忽略，如果需要安装，下载地址为：

http://rpmfind.net/linux/rpm2html/search.php?query=debmirror

5，ksvalidator没有被发现，安装pykickstart

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[[email protected] ~]# yum install pykickstart

6，修改cobbler用户的默认密码，可以使用如下命令生成密码，并使用生成后的密码替换/etc/cobbler/settings中的密码。生成密码命令： 其中“random-phrase-here”为干扰码

openssl passwd -1 -salt ‘random-phrase-here‘ ‘your-password-here‘

7，fencing tools为找到安装


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[[email protected] ~]# yum install fence-agents

OK再来执行检查


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[[email protected] ~]# 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 : debmirror package is not installed, it will be required to manage debian deployments and repositories

4 : 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

Restart cobblerd and then run ‘cobbler sync‘ to apply changes.

重启cobbler


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[[email protected] ~]# /etc/init.d/cobblerd restart

Stopping cobbler daemon:                                   [  OK  ]

Starting cobbler daemon:                                   [  OK  ]

cobbler使用  导入安装文件

总体来说，在RHT/Centos 系列版本下，Cobbler的使用上不会遇到很大问题

Cobbler 主要的作用是，把DHCP 、Kickstart 的修改都集成在一个平台下做了管理

Cobbler 的精华 其实是 它启用了 Kickstart 配置模板，其中可以内嵌python代码

这部分技术，Cobbler叫做：snippets

在RHT/Centos 系列中，官方已经提供了不少这些代码，基本上调用一下就可以了，而Ubuntu下就非常的痛苦，必须自己开发（这部分的配置 暂且不表，后续有专门篇幅来介绍 )

以下是相关配置路径(默认安装) :

Cobbler 配置主要位置：/var/lib/cobbler/ （实际操作和配置的目录 )

snippets 代码  位置：/var/lib/cobbler/snippets/

Kickstart 模板  位置 : /var/lib/cobbler/kickstarts/

安装源镜像       位置 : /var/www/cobbler/ks_mirror/ （把它link到apache的发布目录，方便kickstart 工作时通过http下载安装镜像文件 )

导入安装源

准备好安装光盘 (ISO)我的服务器上有这么多


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[[email protected] Soft]# cd 镜像

像[[email protected] 镜像]# ls

CentOS-5.10-x86_64-bin-DVD-1of2.iso  CentOS-6.5-x86_64-bin-DVD1.iso                       oracle_10201_for_linux32.iso

CentOS-5.10-x86_64-bin-DVD-2of2.iso  CentOS-7.0-1406-x86_64-DVD.iso                       redhat5_32

CentOS-5.5-i386-bin-DVD.iso          cn_windows_7_ultimate_with_sp1_x86_dvd_u_677486.iso  rhel-client-7.0-x86_64-dvd.iso

CentOS-6.4-i386-bin-DVD1.iso         kali-linux-1.0.9a-amd64.iso                          rhel-server-5.8-x86_64-dvd.iso

CentOS-6.4-i386-bin-DVD2.iso         Office_Professional_Plus_2013.1403512018.img         rhel-server-6.4-x86_64-dvd.iso

centOS-6.4-x86_64-bin-DVD1.iso       openfiler-2.3-x86-disc1.iso                          ubuntu-14.04-desktop-amd64.iso

像[[email protected] 镜像]# pwd

/var/ftp/pub/Soft/镜像

挂载 ISO


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[[email protected] 镜像]# mkdir /mnt/Centos6.5

像[[email protected] 镜像]# mount -o loop CentOS-6.5-x86_64-bin-DVD1.iso /mnt/Centos6.5/

导入安装源 到Cobbler中

通过这个环节， Cobbler 会把安装的镜像ISO 拷贝到 源安装镜像目录下: /var/www/cobbler/ks_mirror/

操作命令如下:


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[[email protected] 镜像]# cobbler import --path=/mnt/Centos6.5 --name=CentOS6.5 --arch=x86_64

task started: 2014-10-23_134307_import

task started (id=Media import, time=Thu Oct 23 13:43:07 2014)

Found a candidate signature: breed=redhat, version=rhel6

Found a matching signature: breed=redhat, version=rhel6

Adding distros from path /var/www/cobbler/ks_mirror/CentOS6.5-x86_64:

creating new distro: CentOS6.5-x86_64

trying symlink: /var/www/cobbler/ks_mirror/CentOS6.5-x86_64 -> /var/www/cobbler/links/CentOS6.5-x86_64

creating new profile: CentOS6.5-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/CentOS6.5-x86_64 for CentOS6.5-x86_64

processing repo at : /var/www/cobbler/ks_mirror/CentOS6.5-x86_64

need to process repo/comps: /var/www/cobbler/ks_mirror/CentOS6.5-x86_64

looking for /var/www/cobbler/ks_mirror/CentOS6.5-x86_64/repodata/*comps*.xml

Keeping repodata as-is :/var/www/cobbler/ks_mirror/CentOS6.5-x86_64/repodata

*** TASK COMPLETE ***

参数说明:

--name  为安装源定义一个名字

--arch    指定安装源是32位还是64位、ia64, 目前支持的选项有: x86│x86_64│ia64

注意： 这个安装源的唯一标示 就是根据这两个参数来定义

本例导入成功后，安装源的唯一标示就是：centos6.3-x86_64 ，如果重复，系统会提示导入失败

更多用法，可以查看官方文档: man cobbler ,然后查找 import 的配置

相关管理命令:

//查看导入源库列表


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[[email protected] 镜像]# cobbler distro list

   CentOS6.5-x86_64

配置dhcp服务

首先修改cobbler配置，让cobbler来管理dhcp服务，编辑文件/etc/cobbler/settings

manage_dhcp: 1

接下来修改/etc/cobbler/dhcp.template，此文件是cobbler管理dhcp的模板

本例中只需要修改如下部分

?


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subnet 192.168.1.0 netmask 255.255.255.0 {

     option routers             192.168.1.1;

     option domain-name-servers 192.168.1.1;

     option subnet-mask         255.255.255.0;

     range dynamic-bootp        192.168.1.30 192.168.1.80;

     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 {

                  filename "/pxelinux.0";

          }

     }

}

IP地址段根据你实际环境中的给定

其他可以不用改

重启xinetd


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[[email protected] 镜像]# /etc/init.d/xinetd restart

Stopping xinetd:                                           [  OK  ]

Starting xinetd:                                           [  OK  ]

同步cobbler配置

cobbler sync

输出如下


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[[email protected] 镜像]cobbler syncrt

task started: 2014-10-23_141019_sync

task started (id=Sync, time=Thu Oct 23 14:10:19 2014)

running pre-sync triggers

cleaning trees

removing: /var/www/cobbler/images/CentOS6.5-x86_64

removing: /var/lib/tftpboot/pxelinux.cfg/default

removing: /var/lib/tftpboot/grub/images

removing: /var/lib/tftpboot/grub/grub-x86.efi

removing: /var/lib/tftpboot/grub/grub-x86_64.efi

removing: /var/lib/tftpboot/grub/efidefault

removing: /var/lib/tftpboot/images/CentOS6.5-x86_64

removing: /var/lib/tftpboot/s390x/profile_list

copying bootloaders

trying hardlink /var/lib/cobbler/loaders/grub-x86.efi -> /var/lib/tftpboot/grub/grub-x86.efi

trying hardlink /var/lib/cobbler/loaders/grub-x86_64.efi -> /var/lib/tftpboot/grub/grub-x86_64.efi

copying distros to tftpboot

copying files for distro: CentOS6.5-x86_64

trying hardlink /var/www/cobbler/ks_mirror/CentOS6.5-x86_64/images/pxeboot/vmlinuz -> /var/lib/tftpboot/images/CentOS6.5-x86_64/vmlinuz

trying hardlink /var/www/cobbler/ks_mirror/CentOS6.5-x86_64/images/pxeboot/initrd.img -> /var/lib/tftpboot/images/CentOS6.5-x86_64/initrd.img

copying images

generating PXE configuration files

generating PXE menu structure

copying files for distro: CentOS6.5-x86_64

trying hardlink /var/www/cobbler/ks_mirror/CentOS6.5-x86_64/images/pxeboot/vmlinuz -> /var/www/cobbler/images/CentOS6.5-x86_64/vmlinuz

trying hardlink /var/www/cobbler/ks_mirror/CentOS6.5-x86_64/images/pxeboot/initrd.img -> /var/www/cobbler/images/CentOS6.5-x86_64/initrd.img

Writing template files for CentOS6.5-x86_64

rendering DHCP files

generating /etc/dhcp/dhcpd.conf

rendering TFTPD files

generating /etc/xinetd.d/tftp

processing boot_files for distro: CentOS6.5-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: dhcpd -t -q

received on stdout:

received on stderr:

running: service dhcpd restart

received on stdout: Starting dhcpd: [  OK  ]

received on stderr:

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 ***

cobbler会自动进行初始化工作，移除已经存在的启动项，然后根据模板拷贝loader文件。之后再生成pxe的配置文件，生成dhcp的配置文件，最后再重启dhcp服务。
至此，就可以使用虚拟机来测试cobbler安装了。

OK开启真机或者虚拟机来测试注意开启网络引导 网卡要开启PXE  引导程序

测试如下

登陆后如下默认root密码为cobbler


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# 在要重装的机器安装koan 

yum install koan 

#查看cobbler服务器有哪些安装盘 

koan --list-profiles --server=192.168.1.243 

#选择要重装的系统并重启 

koan --replace-self --server=192.168.1.243 --profile=CentOS-5-4-x86-64 

reboot

转载自：http://my.oschina.net/kcw/blog/336630

时间： 2024-10-12 04:59:03

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