使用Cobbler无人值守安装CentOS
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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
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
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
[root@i51 upimg]# setenforce 0[root@i51 upimg]# service iptables stop
安装cobbler并启动
[root@i51 yum.repos.d]# yum install cobbler -y[root@i51 yum.repos.d]# /etc/init.d/cobblerd startStarting cobbler daemon: [ OK ][root@i51 yum.repos.d]# /etc/init.d/httpd startStarting httpd:
检查配置执行
[root@i51 ~]# cobbler checkTraceback (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:
[root@i51 ~]# service cobblerd restartStopping cobbler daemon: [ OK ]Starting cobbler daemon: [ OK ][root@i51 ~]# cobbler get-loaderstask started: 2014-10-23_131316_get_loaderstask 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/READMEdownloading http://www.cobblerd.org/loaders/COPYING.elilo to /var/lib/cobbler/loaders/COPYING.elilodownloading http://www.cobblerd.org/loaders/COPYING.yaboot to /var/lib/cobbler/loaders/COPYING.yabootdownloading http://www.cobblerd.org/loaders/COPYING.syslinux to /var/lib/cobbler/loaders/COPYING.syslinuxdownloading http://www.cobblerd.org/loaders/elilo-3.8-ia64.efi to /var/lib/cobbler/loaders/elilo-ia64.efidownloading http://www.cobblerd.org/loaders/yaboot-1.3.14-12 to /var/lib/cobbler/loaders/yabootdownloading http://www.cobblerd.org/loaders/pxelinux.0-3.86 to /var/lib/cobbler/loaders/pxelinux.0downloading http://www.cobblerd.org/loaders/menu.c32-3.86 to /var/lib/cobbler/loaders/menu.c32downloading http://www.cobblerd.org/loaders/grub-0.97-x86.efi to /var/lib/cobbler/loaders/grub-x86.efidownloading 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
[root@i51 ~]# cobbler checkThe 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/rsync4 : debmirror package is not installed, it will be required to manage debian deployments and repositories5 : ksvalidator was not found, install pykickstart6 : 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 one7 : 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.
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
[root@i51 ~]# 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
[root@i51 ~]# yum install fence-agents
OK再来执行检查
[root@i51 ~]# cobbler checkThe 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 repositories4 : 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 oneRestart cobblerd and then run 'cobbler sync' to apply changes.
重启cobbler
[root@i51 ~]# /etc/init.d/cobblerd restartStopping 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
[root@i51 Soft]# cd 镜像像[root@i51 镜像]# lsCentOS-5.10-x86_64-bin-DVD-1of2.iso CentOS-6.5-x86_64-bin-DVD1.iso oracle_10201_for_linux32.isoCentOS-5.10-x86_64-bin-DVD-2of2.iso CentOS-7.0-1406-x86_64-DVD.iso redhat5_32CentOS-5.5-i386-bin-DVD.iso cn_windows_7_ultimate_with_sp1_x86_dvd_u_677486.iso rhel-client-7.0-x86_64-dvd.isoCentOS-6.4-i386-bin-DVD1.iso kali-linux-1.0.9a-amd64.iso rhel-server-5.8-x86_64-dvd.isoCentOS-6.4-i386-bin-DVD2.iso Office_Professional_Plus_2013.1403512018.img rhel-server-6.4-x86_64-dvd.isocentOS-6.4-x86_64-bin-DVD1.iso openfiler-2.3-x86-disc1.iso ubuntu-14.04-desktop-amd64.iso像[root@i51 镜像]# pwd/var/ftp/pub/Soft/镜像
挂载 ISO
[root@i51 镜像]# mkdir /mnt/Centos6.5像[root@i51 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:
[root@i51 镜像]# cobbler import --path=/mnt/Centos6.5 --name=CentOS6.5 --arch=x86_64task started: 2014-10-23_134307_importtask started (id=Media import, time=Thu Oct 23 13:43:07 2014)Found a candidate signature: breed=redhat, version=rhel6Found a matching signature: breed=redhat, version=rhel6Adding distros from path /var/www/cobbler/ks_mirror/CentOS6.5-x86_64:creating new distro: CentOS6.5-x86_64trying symlink: /var/www/cobbler/ks_mirror/CentOS6.5-x86_64 -> /var/www/cobbler/links/CentOS6.5-x86_64creating new profile: CentOS6.5-x86_64associating reposchecking 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_64processing repo at : /var/www/cobbler/ks_mirror/CentOS6.5-x86_64need to process repo/comps: /var/www/cobbler/ks_mirror/CentOS6.5-x86_64looking for /var/www/cobbler/ks_mirror/CentOS6.5-x86_64/repodata/*comps*.xmlKeeping 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
[root@i51 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
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
[root@i51 镜像]# /etc/init.d/xinetd restartStopping xinetd: [ OK ]Starting xinetd: [ OK ]同步cobbler配置
cobbler sync
输出如下
[root@i51 镜像]cobbler syncrttask started: 2014-10-23_141019_synctask started (id=Sync, time=Thu Oct 23 14:10:19 2014)running pre-sync triggerscleaning treesremoving: /var/www/cobbler/images/CentOS6.5-x86_64removing: /var/lib/tftpboot/pxelinux.cfg/defaultremoving: /var/lib/tftpboot/grub/imagesremoving: /var/lib/tftpboot/grub/grub-x86.efiremoving: /var/lib/tftpboot/grub/grub-x86_64.efiremoving: /var/lib/tftpboot/grub/efidefaultremoving: /var/lib/tftpboot/images/CentOS6.5-x86_64removing: /var/lib/tftpboot/s390x/profile_listcopying bootloaderstrying hardlink /var/lib/cobbler/loaders/grub-x86.efi -> /var/lib/tftpboot/grub/grub-x86.efitrying hardlink /var/lib/cobbler/loaders/grub-x86_64.efi -> /var/lib/tftpboot/grub/grub-x86_64.eficopying distros to tftpbootcopying files for distro: CentOS6.5-x86_64trying hardlink /var/www/cobbler/ks_mirror/CentOS6.5-x86_64/images/pxeboot/vmlinuz -> /var/lib/tftpboot/images/CentOS6.5-x86_64/vmlinuztrying hardlink /var/www/cobbler/ks_mirror/CentOS6.5-x86_64/images/pxeboot/initrd.img -> /var/lib/tftpboot/images/CentOS6.5-x86_64/initrd.imgcopying imagesgenerating PXE configuration filesgenerating PXE menu structurecopying files for distro: CentOS6.5-x86_64trying hardlink /var/www/cobbler/ks_mirror/CentOS6.5-x86_64/images/pxeboot/vmlinuz -> /var/www/cobbler/images/CentOS6.5-x86_64/vmlinuztrying hardlink /var/www/cobbler/ks_mirror/CentOS6.5-x86_64/images/pxeboot/initrd.img -> /var/www/cobbler/images/CentOS6.5-x86_64/initrd.imgWriting template files for CentOS6.5-x86_64rendering DHCP filesgenerating /etc/dhcp/dhcpd.confrendering TFTPD filesgenerating /etc/xinetd.d/tftpprocessing boot_files for distro: CentOS6.5-x86_64cleaning link cachesrunning post-sync triggersrunning python triggers from /var/lib/cobbler/triggers/sync/post/*running python trigger cobbler.modules.sync_post_restart_servicesrunning: dhcpd -t -qreceived on stdout: received on stderr: running: service dhcpd restartreceived 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_trackrunning 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
# 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
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