目录
一、cobbler基本概念
1.1 Cobbler介绍
Cobbler:
快速网络安装linux操作系统的服务，支持众多的Linux发行版：Red Hat、Fedora、CentOS、Debian、Ubuntu和SuSE，也可以支持网络安装windows
PXE的二次封装，将多种安装参数封装到一个菜单Python编写
可以使用命令行方式管理，也提供了基于Web的界面管理工具(cobbler-web)，还提供了API接口，可以方便二次开发使用。
较早前的kickstart的升级版，优点是比较容易配置，还自带web界面比较易于管理。
内置了一个轻量级配置管理系统，但它也支持和其它配置管理系统集成，如Puppet，暂时不支持SaltStack。
1.2 cobbler工作流程
client裸机配置了从网络启动后，开机后会广播包请求DHCP服务器（cobbler server）发送其分配好的一个IP
DHCP服务器（cobbler server）收到请求后发送responese，包括其ip地址
client裸机拿到ip后再向cobbler server发送请求OS引导文件的请求
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cobbler server告诉裸机OS引导文件的名字和TFTP server的ip和port
client裸机通过上面告知的TFTP server地址通信，下载引导文件
client裸机执行执行该引导文件，确定加载信息，选择要安装的os，期间会再向cobbler server请求kickstart文件和os image
cobbler server发送请求的kickstart和os iamge
client裸机加载kickstart文件
client裸机接收os image，安装该os image
1.3 cobbler介绍及组成
cobbler需通过epel源安装
cobbler服务集成：
- PXE服务支持
- DHCP服务管理
- rsync同步服务
- YUM仓库
- Apache（提供kickstart的安装源，并提供定制化的配置）
- DNS服务管理（可选bind，dnsmasq）
- Kickstart服务支持
IPMI 电源管理
检查cobbler环境命令
cobbler check
二、cobbler配置组成
2.1 cobbler相关术语
发行版：
- 表示一个操作系统版本，它承载了内核和 initrd 的信息，以及内核参数等其他数据
配置文件：
- 包含一个发行版、一个 kickstart 文件以及可能的存储库，还包含更多特定的内核参数等其他数据
系统：
- 表示要配置的主机，它包含一个配置文件或一个镜像，还包含IP 和 MAC 地址、电源管理（地址、凭据、类型）以及更为专业的数据等信息
存储库：
- 保存一个 yum 或 rsync 存储库的镜像信息
镜像：
- 可替换一个包含不属于此类别的文件的发行版对象（例如，无法分为内核和 initrd 的对象）
2.2 cobbler各种配置目录说明
安装：yum install cobbler dhcp
配置文件目录 /etc/cobbler
/etc/cobbler/settings : cobbler 主配置文件
/etc/cobbler/iso/: iso模板配置文件
/etc/cobbler/pxe: pxe模板文件
/etc/cobbler/power: 电源配置文件
/etc/cobbler/user.conf: web服务授权配置文件
/etc/cobbler/users.digest: web访问的用户名密码配置文件
/etc/cobbler/dhcp.template : dhcp服务器的的配置末班
/etc/cobbler/dnsmasq.template : dns服务器的配置模板
/etc/cobbler/tftpd.template : tftp服务的配置模板
/etc/cobbler/modules.conf : 模块的配置文件
2.3 目录介绍
数据目录
/var/lib/cobbler/config/: 用于存放distros，system，profiles 等信息配置文件
/var/lib/cobbler/triggers/: 用于存放用户定义的cobbler命令
/var/lib/cobbler/kickstart/: 默认存放kickstart文件
/var/lib/cobbler/loaders/: 存放各种引导程序镜像目录
/var/www/cobbler/ks_mirror/: 导入的发行版系统的所有数据
/var/www/cobbler/images/ : 导入发行版的kernel和initrd镜像用于远程网络启动
/var/www/cobbler/repo_mirror/: yum 仓库存储目录日志目录
/var/log/cobbler/installing: 客户端安装日志
/var/log/cobbler/cobbler.log : cobbler日志2.4 cobbler命令介绍
cobbler commands 介绍
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 查看配置信息三、cobbler服务端部署
//配置yum源
[root@localhost ~]# curl -o /etc/yum.repos.d/CentOS7-Base-163.repo http://mirrors.163.com/.help/CentOS7-Base-163.repo
--2018-08-10 12:07:17-- http://mirrors.163.com/.help/CentOS7-Base-163.repo
Resolving mirrors.163.com (mirrors.163.com)... 59.111.0.251
Connecting to mirrors.163.com (mirrors.163.com)|59.111.0.251|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1572 (1.5K) [application/octet-stream]
Saving to: ‘CentOS7-Base-163.repo’
100%[=================================>] 1,572 --.-K/s in 0s
2018-08-10 12:07:17 (191 MB/s) - ‘CentOS7-Base-163.repo’ saved [1572/1572]
[root@localhost ~]# sed -i 's/\$releasever/7/g' /etc/yum.repos.d/CentOS7-Base-163.repo
[root@localhost ~]# sed -i 's/^enabled=.*/enabled=1/g' /etc/yum.repos.d/CentOS7-Base-163.repo
[root@localhost ~]# yum -y install epel-release
安装过程略。。。。
//安装cobbler以及相关的软件
[root@localhost ~]# yum -y install httpd dhcp tftp python-ctypes cobbler xinetd cobbler-web pykickstart
安装过程略....
//启动服务并设置开机自启
[root@localhost ~]# systemctl start httpd
[root@localhost ~]# systemctl start cobblerd
[root@localhost ~]# systemctl enable httpd
Created symlink from /etc/systemd/system/multi-user.target.wants/httpd.service to /usr/lib/systemd/system/httpd.service.
[root@localhost ~]# systemctl enable cobblerd
Created symlink from /etc/systemd/system/multi-user.target.wants/cobblerd.service to /usr/lib/systemd/system/cobblerd.service.
//修改server的ip地址为本机ip
[root@localhost ~]# sed -i 's/^server: 127.0.0.1/server: 172.16.12.128/' /etc/cobbler/settings
//设置tftp的ip地址为本机ip
[root@localhost ~]# sed -i 's/^next_server: 127.0.0.1/next_server: 172.16.12.128/' /etc/cobbler/settings
//开启tftp
[root@localhost ~]# sed -i '/disable/s/yes/no/g' /etc/xinetd.d/tftp
//下载缺失文件
[root@localhost ~]# cobbler get-loaders
task started: 2018-08-21_152811_get_loaders
task started (id=Download Bootloader Content, time=Tue Aug 21 15:28:11 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 ***
//启动rsync并设置开机自启
[root@localhost ~]# systemctl start rsyncd
[root@localhost ~]# systemctl enable rsyncd
Created symlink from /etc/systemd/system/multi-user.target.wants/rsyncd.service to /usr/lib/systemd/system/rsyncd.service.
//生成加密的密码
[root@localhost ~]# openssl passwd -1 -salt "$RANDOM" 'wangqing123!'
$1$28958$sq1sJFDX0bZo.H8Q.8NLg0 //这是密码加密后的形式
//将新生成的加密密码加入到配置文件
[root@localhost ~]# vim /etc/cobbler/settings
.... //此处为省略内容
default_password_crypted: "$1$28958$sq1sJFDX0bZo.H8Q.8NLg0"
..... //此处为省略内容
//重启cobbler
[root@localhost ~]# systemctl restart cobblerd
[root@localhost ~]# ss -antl
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 0 128 *:22 *:*
LISTEN 0 100 127.0.0.1:25 *:*
LISTEN 0 5 127.0.0.1:25151 *:*
LISTEN 0 5 *:873 *:*
LISTEN 0 128 :::80 :::*
LISTEN 0 128 :::22 :::*
LISTEN 0 100 ::1:25 :::*
LISTEN 0 128 :::443 :::*
LISTEN 0 5 :::873 :::*
//通过cobbler check 核对当前设置是否有问题
[root@localhost ~]# 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 repositories
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.
//以上两个是关于debian系统的错误，请忽略
//配置cobbler dhcp
//修改cobbler配置文件，让cobbler控制dhcp
[root@localhost ~]# sed -i '/^manage_dhcp/s/0/1/g' /etc/cobbler/settings
[root@localhost ~]# sed -n '/^manage_dhcp/p' /etc/cobbler/settings
manage_dhcp: 1
//配置dhcp
[root@localhost ~]# vim /etc/cobbler/dhcp.template
.... //此处为省略内容
subnet 172.16.12.0 netmask 255.255.255.0 {
option routers 172.16.12.128;
option domain-name-servers 172.16.12.2; //此处为系统安装好后指定的dns地址
option subnet-mask 255.255.255.0;
range dynamic-bootp 172.16.12.100 172.16.12.250;
default-lease-time 21600;
max-lease-time 43200;
next-server $next_server;
.... //此处为省略内容
//重启服务并同步配置，改完dhcp必须要sync同步配置
[root@localhost ~]# systemctl restart cobblerd
[root@localhost ~]# cobbler sync
task started: 2018-08-21_160420_sync
task started (id=Sync, time=Tue Aug 21 16:04:20 2018)
running pre-sync triggers
cleaning trees
removing: /var/lib/tftpboot/grub/images
copying 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.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 images
generating PXE configuration files
generating PXE menu structure
rendering DHCP files
generating /etc/dhcp/dhcpd.conf
rendering TFTPD files
generating /etc/xinetd.d/tftp
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:
received on stderr: Redirecting to /bin/systemctl restart dhcpd.service
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 ***
//检查dhcp是否正常
[root@localhost ~]# netstat -anulp|grep dhcp
udp 0 0 0.0.0.0:67 0.0.0.0:* 12692/dhcpd
//导入redhat7镜像
[root@localhost ~]# mount /dev/cdrom /mnt
mount: /dev/sr0 is write-protected, mounting read-only
[root@localhost ~]# cobbler import --path=/mnt --name=rhel-7 --arch=x86_64
task started: 2018-08-21_162444_import
task started (id=Media import, time=Tue Aug 21 16:24:44 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/rhel-7-x86_64:
creating new distro: rhel-7-x86_64
trying symlink: /var/www/cobbler/ks_mirror/rhel-7-x86_64 -> /var/www/cobbler/links/rhel-7-x86_64
creating new profile: rhel-7-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/rhel-7-x86_64 for rhel-7-x86_64
processing repo at : /var/www/cobbler/ks_mirror/rhel-7-x86_64 //导入镜像的位置
need to process repo/comps: /var/www/cobbler/ks_mirror/rhel-7-x86_64
looking for /var/www/cobbler/ks_mirror/rhel-7-x86_64/repodata/*comps*.xml
Keeping repodata as-is :/var/www/cobbler/ks_mirror/rhel-7-x86_64/repodata
*** TASK COMPLETE ***
//说明：
--path //镜像路径
--name //为安装源定义一个名字
--arch //指定安装源平台
//安装源的唯一标示就是根据name参数来定义，本例导入成功后，安装源的唯一标示就是：CentOS-7-x86_64，如果重复，系统会提示导入失败
//查看cobbler镜像列表
[root@localhost ~]# cobbler list
distros:
rhel-7-x86_64
profiles:
rhel-7-x86_64
systems:
repos:
images:
mgmtclasses:
packages:
files:
//创建kickstarts自动安装脚本
[root@localhost ~]# cat > /var/lib/cobbler/kickstarts/rhel-7-x86_64.ks <<'EOF'
auth --enableshadow --passalgo=sha512
bootloader --location=mbr
clearpart --all --initlabel
part /boot --asprimary --fstype="ext4" --size=500
part swap --fstype="swap" --size=4096
part / --fstype="ext4" --grow --size=15000
text
firewall --disabled
firstboot --disable
keyboard us
lang en_US
url --url=http://172.16.12.128/cobbler/ks_mirror/rhel-7-x86_64
$yum_repo_stanza
reboot
rootpw --iscrypted $6$2WTFvfNvAMgCUPuC$MJgWGzhakgxrRObcEbAwSe8vkz0s//xyiTllGwxRsHHruQhcskO69u2LVTU9u0eemHXH2pzcGawyAJ54R2E/x0
selinux --disabled
skipx
timezone Asia/Shanghai --isUtc --nontp
install
zerombr
%packages
@^minimal
@core
kexec-tools
%end
%addon com_redhat_kdump --enable --reserve-mb='auto'
%end
%anaconda
pwpolicy root --minlen=6 --minquality=1 --notstrict --nochanges --notempty
pwpolicy user --minlen=6 --minquality=1 --notstrict --nochanges --emptyok
pwpolicy luks --minlen=6 --minquality=1 --notstrict --nochanges --notempty
%end
EOF
//检查ks文件语法是否有误
[root@localhost ~]# cobbler validateks
task started: 2018-08-21_171616_validateks
task started (id=Kickstart Validation, time=Tue Aug 21 17:16:16 2018)
----------------------------
osversion: rhel7
checking url: http://172.16.12.128/cblr/svc/op/ks/profile/rhel-7-x86_64
running: /usr/bin/ksvalidator -v "rhel7" "http://172.16.12.128/cblr/svc/op/ks/profile/rhel-7-x86_64"
received on stdout:
received on stderr:
*** all kickstarts seem to be ok ***
*** TASK COMPLETE ***
//查看当前cobbler有哪些配置文件
[root@localhost ~]# cobbler profile list
Centos-7-x86_64
//修改profile，将我们新建的ks文件设为默认的kickstarts安装文件
[root@localhost ~]# cobbler profile edit --name rhel-7-x86_64 --kickstart=/var/lib/cobbler/kickstarts/rhel-7-x86_64.ks
//配置网卡名称为传统网卡名称eth0
[root@localhost ~]# cobbler profile edit --name rhel-7-x86_64 --kopts='net.ifnames=0 biosdevname=0'
//检查当前系统cobbler配置文件信息
[root@localhost ~]# cobbler profile report
Name : rhel-7-x86_64
TFTP Boot Files : {}
Comment :
DHCP Tag : default
Distribution : rhel-7-x86_64 //仓库名字
Enable gPXE? : 0
Enable PXE Menu? : 1
Fetchable Files : {}
Kernel Options : {'biosdevname': '0', 'net.ifnames': '0'} //网卡设为传统命名方式
Kernel Options (Post Install) : {}
Kickstart : /var/lib/cobbler/kickstarts/rhel-7-x86_64.ks //使用的kickstarts配置文件的路径，必须为我们新建的ks文件的路径
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
//同步cobbler
[root@localhost ~]# cobbler sync
task started: 2018-08-21_172909_sync
task started (id=Sync, time=Tue Aug 21 17:29:09 2018)
running pre-sync triggers
cleaning trees
removing: /var/www/cobbler/images/rhel-7-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/rhel-7-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: rhel-7-x86_64
trying hardlink /var/www/cobbler/ks_mirror/rhel-7-x86_64/images/pxeboot/vmlinuz -> /var/lib/tftpboot/images/rhel-7-x86_64/vmlinuz
trying hardlink /var/www/cobbler/ks_mirror/rhel-7-x86_64/images/pxeboot/initrd.img -> /var/lib/tftpboot/images/rhel-7-x86_64/initrd.img
copying images
generating PXE configuration files
generating PXE menu structure
copying files for distro: rhel-7-x86_64
trying hardlink /var/www/cobbler/ks_mirror/rhel-7-x86_64/images/pxeboot/vmlinuz -> /var/www/cobbler/images/rhel-7-x86_64/vmlinuz
trying hardlink /var/www/cobbler/ks_mirror/rhel-7-x86_64/images/pxeboot/initrd.img -> /var/www/cobbler/images/rhel-7-x86_64/initrd.img
Writing template files for rhel-7-x86_64
rendering DHCP files
generating /etc/dhcp/dhcpd.conf
rendering TFTPD files
generating /etc/xinetd.d/tftp
processing boot_files for distro: rhel-7-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:
received on stderr: Redirecting to /bin/systemctl restart dhcpd.service
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 ***
//为避免发生未知问题，先把服务端所有服务重启
[root@localhost ~]# systemctl restart xinetd
[root@localhost ~]# systemctl restart cobblerd
[root@localhost ~]# systemctl restart httpd
[root@localhost ~]# ss -antl
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 0 128 *:22 *:*
LISTEN 0 100 127.0.0.1:25 *:*
LISTEN 0 5 127.0.0.1:25151 *:*
LISTEN 0 5 *:873 *:*
LISTEN 0 128 :::80 :::*
LISTEN 0 128 :::22 :::*
LISTEN 0 100 ::1:25 :::*
LISTEN 0 128 :::443 :::*
LISTEN 0 5 :::873 :::*