Cobbler自动部署os-centos

2020-04-21
#Linux

Cobbler安装部署

Centos环境下

架构

image-20200421225026881

  1. 系统初始化配置

    关闭selinux

    setenforce 0

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    sed -i 's#SELINUX=enforcing#SELINUX=permissive#g' /etc/sysconfig/selinux

    关闭防火墙

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    systemctl stop firewalld

    systemctl disable firewalld

    安装阿里云epel源

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    wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo

    更新软件包

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    yum update -y

  2. 部署cobbler

    安装cobbler和其组件

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    yum install -y httpd dhcp tftp cobbler cobbler-web pykickstart xinetd

    启动服务和开机自启动

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    systemctl start httpd
    systemctl start cobblerd
    systemctl start xinetd
    systemctl enable httpd
    systemctl enable cobblerd
    systemctl enable xinetd

  3. 配置cobbler

    • 检查配置
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    cobbler check
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    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 : enable and start rsyncd.service with systemctl
    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

    • 生成默认密码（用于登录后面我们创建的linux虚拟机,root密码）

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      openssl passwd -1 -salt '123456' 'test1234'

      test1234才是root密码

      image-20200421223748041

    • 修改配置文件

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      vi /etc/cobbler/settings

      主要修改下面几个参数

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      server: 192.168.50.100
      next_server: 192.168.50.100
      default_password_crypted: "$1$123456$Q/WGzwlidu0V8tip7w3hP1"
      #设置cobbler来管理dhcp
      manage_dhcp: 1
      #设置cobbler来管理tftp
      manage_tftpd: 1
      #设置cobbler支持yum源安装
      yum_post_install_mirror: 1

  • 修改tftp配置

    image-20200421223949861

  • 加载cobbler一下文件

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    cobbler get-loaders

  • 配置rsync服务

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    systemctl enable rsync
    systemctl start rsync

  • 应用配置并重新检查

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    systemctl restart cobblerd
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    cobbler check
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    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.

  1. 配置dhcpd

    • 配置dhcp服务(我这边两张网卡只有一张用于dhcp服务，一张用于上外网)
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    vi /etc/cobbler/dhcp.template
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    subnet 10.10.1.0 netmask 255.255.255.0 {
         option routers             10.10.1.20;
         option domain-name-servers 10.10.1.20;
         option subnet-mask         255.255.255.0;
         range dynamic-bootp        10.10.1.10 10.10.1.254;
         default-lease-time         21600;
         max-lease-time             43200;
         next-server                $next_server;
    }
    • 多网卡的情况下，需要指定具有相同内网的网卡来做dhcp

    eno33559296 就是我用来和虚拟机通信的网卡

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    cp /usr/lib/systemd/system/dhcpd.service /etc/systemd/system/
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    vi /etc/systemd/system/dhcpd.service
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    [Unit]
    Description=DHCPv4 Server Daemon
    Documentation=man:dhcpd(8) man:dhcpd.conf(5)
    Wants=network-online.target
    After=network-online.target
    After=time-sync.target

    [Service]
    Type=notify
    ExecStart=/usr/sbin/dhcpd -f -cf /etc/dhcp/dhcpd.conf -user dhcpd -group dhcpd --no-pid eno33559296

    [Install]
    WantedBy=multi-user.target

    • 重启cobbler 同步配置

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      systemctl restart cobblerd
      cobbler sync

  2. 导入镜像

    • 先挂载centos镜像到服务器，然后再导入
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    mount  /dev/cdrom  /mnt/
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    cobbler  import  --name=CentOS7-x86_64 --path=/mnt/  --arch=x86_64

  3. 制作centos kickstart文件

    可以参考我的github上面ks文件

  4. 制作snippets系统初始化脚本

    参考系统标准化使用的脚本

  5. 配置开机启动菜单标签

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    vi /etc/cobbler/pxe/pxedefault.template

    image-20200421225630564

  6. 创建虚拟机测试