Linux 自动化批量部署 Cobbler

短命女 2023-07-01 08:33 14阅读 0赞

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70][]

*  网络安装服务器套件 Cobbler(补鞋匠)
 *  从前，我们一直在做装机民工这份很有前途的职业。自打若干年前 Red Hat 推出了 Kickstart，此后我们顿觉身价倍增。不再需要刻了光盘一台一台地安装 Linux，只要搞定 PXE、[DHCP][]、TFTP，还有那满屏眼花缭乱不知所云的 Kickstart 脚本，我们就可以像哈里波特一样，轻点魔棒，瞬间安装上百台服务器。这一堆花里胡哨的东西可不是一般人都能整明白的，没有大专以上学历，通不过英语四级， 根本别想玩转。总而言之，这是一份多么有前途，多么有技术含量的工作啊。很不幸，Red Hat 最新（Cobbler项目最初在2008年左右发布）发布了网络安装服务器套件 Cobbler(补[鞋匠][Link 1])，它已将 Linux 网络安装的技术门槛，从大专以上文化水平，成功降低到初中以下，连补鞋匠都能学会。

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*  Cobbler 的优点：自动管理各个服务器间的配置，更强大的管理功能。而且它还有 Web 管理界面，可以通过点一点鼠标就可以安装一台主机，Kickstart 的模板文件可以配置多个。

![format_png][]

参照上图所示，Cobbler 运行流程如下：

*  # **Server** 端： #
 *  启动 Cobbler 服务
 *  进行 Cobbler 错误检查，执行 Cobbler check 命令
 *  进行配置同步，执行 Cobbler sync 命令
 *  复制相关启动文件文件到 TFTP 目录中
 *  启动 DHCP 服务，提供地址分配
 *  DHCP 服务分配 IP 地址
 *  TFTP 传输启动文件
 *  Server 端接收安装信息
 *  Server 端发送 ISO 镜像与 Kickstart 文件

--------------------

*  # **Client** 端： #
 *  客户端以 PXE 模式启动
 *  客户端获取 IP 地址
 *  通过 TFTP 服务器获取启动文件
 *  进入 Cobbler 安装选择界面
 *  客户端确定加载信息
 *  根据配置信息准备安装系统
 *  加载 Kickstart 文件
 *  传输系统安装的其它文件
 *  进行安装系统

--------------------

# **下面我们开始搭建 Cobbler 无人值守安装服务器** #

*  
 *  关闭 selinux、iptables和 Friewall
 *  需要使用 yum 的 epel 源，具体设置请参照拙作：[Linux基础之软件包管理 rpm 及 yum\_高飞的博客-CSDN博客][Linux_ rpm _ yum_-CSDN]
 *  #  #
 *  # 安装 Cobbler 有一部分软件会被当做依赖进行安装上去，比如 tftp 和 httpd 服务 #
 *  # yum -y install cobbler cobbler-web dhcp tftp-server pykickstart httpd rsync xinetd #
 *  
 *  cobbler             \#Cobbler 程序包
 *  cobbler-web     \#Cobbler 的 Web 服务包
 *  pykickstart        \#Cobbler 检查 kickstart  语法错误
 *  httpd                \#Apache Web 服务
 *  xinetd               \#超级守护进程

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*  注：如果安装过程中缺少 rpm 包，可以到以下网站自行下载安装
 *  [https://pkgs.org/][https_pkgs.org]

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*  /etc/cobbler                              \# 配置文件目录  
    /etc/cobbler/settings                 \# Cobbler 主配置文件，这个文件是 YAML 栺式，Cobbler 是 python 写的程序。  
    /etc/cobbler/dhcp.template       \# DHCP服务的配置模板  
    /etc/cobbler/tftpd.template       \# tftp 服务的配置模板  
    /etc/cobbler/rsync.template      \# rsync 服务的配置模板  
    /etc/Cobbler/iso                       \# iso 模板配置文件目录  
    /etc/cobbler/pxe                      \# pxe 模板文件目录  
    /etc/cobbler/power                  \# 电源的配置文件目录  
    /etc/cobbler/users.conf           \# Web 服务授权配置文件  
    /etc/cobbler/users.digest        \# 用于 Web 访问的用户名密码配置文件  
    /etc/cobbler/dnsmasq.template    \# DNS 服务的配置模板  
    /etc/cobbler/modules.conf           \# Cobbler 模块配置文件  
    /var/lib/cobbler                            \# Cobbler 数据目录  
    /var/lib/cobbler/config                 \# 配置文件  
    /var/lib/cobbler/kickstarts            \# 默认存放 kickstart 文件  
    /var/lib/cobbler/loaders               \# 存放的各种引导程序  
    /var/www/cobbler                       \# 系统安装镜像目录  
    /var/www/cobbler/ks\_mirror        \# 导入的系统镜像列表  
    /var/www/cobbler/images           \# 导入的系统镜像启动文件  
    /var/www/cobbler/repo\_mirror     \# yum 源存储目录  
    /var/log/cobbler                          \# 日志目录  
    /var/log/cobbler/install.log          \# 客户端系统安装日志  
    /var/log/cobbler/cobbler.log       \# Cobbler 日志

--------------------

下面开始配置 Cobbler

*  首先启动 Cobbler 和 httpd 服务
 *  systemctl start cobblerd
 *  systemctl start httpd
 *  设置为开机自启动
 *  systemctl enable cobblerd
 *  systemctl enable httpd

![20200120085625700.png][]

*  启动无误后，编辑 /etc/cobbler/settings  Cobbler 主配置文件
 *  **vim /etc/cobbler/settings**
 *  搜索 server 和 next\_server 修改为对应的服务器 IP

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 5][]

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*  修改安装操作系统默认 root 用户密码，使用 openssl 加密
 *  openssl passwd -1 -salt 'root' '123456'
 *  $1$root$j0bp.KLPyr.u9kgQ428D10

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*  修改 Cobbler 管理 dhcp 服务
 *  manage\_dhcp: 1
 *  manage\_tftpd: 1        \#默认已开启

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*  防止客户端重复安装操作系统,增加默认从本机硬盘启动菜单
 *  pxe\_just\_once: 1

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 9][]

*  --------------------
    
    修改 tftp 服务被 xinetd 服务管理
 *  vim /etc/xinetd.d/tftp
 *  安装完默认是** disable         = yes **    关闭状态，修改为 ** disable         =  no**

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--------------------

*  下载操作系统引导文件
 *  **cobbler get-loaders**

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*  ### **PS:目测目前无法 get-loaders，可以多试几次** ###
 *  **或者从官网 下载源码包  **[Cobbler - Linux install and update server][]
 *  
 *  **find / -name "menu.c32" -o -name "grub\*.efi" -o -name "pxelinux.0"  
    /boot/efi/EFI/centos/grubx64.efi  
    /usr/share/syslinux/menu.c32  
    /usr/share/syslinux/pxelinux.0  
    /opt/cobbler-3.2.1/loaders/grub2-x86.efi  
    /opt/cobbler-3.2.1/loaders/grub2-x86\_64.efi**
 *  **将 grub2-x86.efi   grub2-x86\_64.efi  pxelinux.0 menu.c32 复制到 /var/lib/cobbler/loaders/ 目录下**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 12][]

*  # 开启 rsyncd 服务，设置为开机自启动 #
 *  systemctl start rsyncd
 *  systemctl enable rsyncd

![20200120084942571.png][]

--------------------

*  配置 DHCP，Cobbler 自动管理 DHCP 服务，只需要修改 Cobbler 中的模板配置文件
 *  vim /etc/cobbler/dhcp.template

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*  subnet 192.168.10.0 netmask 255.255.255.0       \#配置默认为 192.168.1.0 网段，具体要看你的装机 vlan 划分
 *  option routers 192.168.10.2;                                \#按照实际的网关为准
 *  option domain-name-servers 192.168.10.2;          \#修改 DNS 地址
 *  range dynamic-bootp        192.168.10.100 192.168.10.254;           \# 可分配的起始IP-结束IP
 *  $next\_server 为变量值（前面修改的主配置文件中的地址 192.168.10.2）

--------------------

*  **导入镜像以及配置**

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*  挂载光驱

![20200120093328559.png][]

*  导入镜像（时间较长）
 *  cobbler import --path=/mnt/cdrom --name=CentOS-7.5 --arch=x86\_64

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*  查看镜像，上面是镜像名称，下面是启动菜单
 *  cobbler list

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*  --------------------
    
    确认配置无误后，同步配置文件，需要先重启 Cobblerd
 *  systemctl restart cobblerd
 *  cobbler sync

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![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 18][]

*  --------------------
    
    检查配置
 *  cobbler check
 *  下面这2个错误可以忽略,一个是 debian repo 和 电源管理

![20200120095304851.png][]

--------------------

*  ### **定制 ks 自动应答文件** ###
 *  cobbler profile list
 *  cobbler profile report --name=CentOS-7.5-x86\_64
 *  默认使用的是 /var/lib/cobbler/kickstarts/sample\_end.ks

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*  编辑 **vim /var/lib/cobbler/kickstarts/CentOS7.5.ks** 文件

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*  install                                                                        \#全新安装  
    text                                                                           \#安装模式为文字界面  
    url --url=$tree                                                           \# 指定 ks 自动应答文件位置，引用Cobbler的内置变量 $tree  
    auth --enableshadow --passalgo=sha512                 \#设置系统的授权选项  
    firstboot --enable                                                       
    reboot                                                                      \#安装完成后自动重启  
    keyboard us                                                             \#默认键盘设置  
    lang en\_US.UTF-8                                                   \#默认语言设置  
    timezone --utc Asia/Shanghai                                   \#默认时区设置   
    rootpw --iscrypted $default\_password\_crypted         \#默认 root 用户密码设置，引用 /etc/cobbler/settings 中设置的变量  
    firewall --disable                                                       \#关闭防火墙以及selinux  
    selinux --disable  
    ignoredisk --only-use=sda                                        \#指定安装到哪个硬盘  
    bootloader --append="quiet crashkernel=auto" --location=mbr --boot-drive=sda     \#指定在那个硬盘安装 mbr 引导  
    network  --bootproto=dhcp --device=eth0 --onboot=on         \#指定网卡名称以及启动方式  
    zerombr                                                                  \#清空硬盘的 mbr 信息  
    clearpart --all --initlabel                                           \#清空硬盘所有分区  
    part /boot --fstype="xfs" --ondisk=sda --size=200     \#创建 boot 分区 指定大小为 200MB  
    part pv.156 --fstype="lvmpv" --ondisk=sda --size=1 --grow   \#创建 pv 卷组，自动扩展到最大容量  
    volgroup centos --pesize=4096 pv.156                     \#创建 vg 指定 pesize 为 4096 KB  
    logvol swap  --fstype="swap" --size=2047 --name=swap --vgname=centos    \#创建swap 分区 ，指定大小为 2047 MB  
    logvol /  --fstype="xfs" --vgname=centos --size=1 --grow   \#创建 lvm  根分区   自动扩展到最大容量
    
    %packages                                                             \#定制安装为 最小化安装  
    @^minimal  
    @core  
    chrony  
    kexec-tools  
    %end
 *  **改变默认的 ks 文件（需要 root 用户）**
 *  cobbler profile edit --distro=CentOS-7.5-x86\_64 --name=CentOS-7.5-x86\_64 --kickstart=/var/lib/cobbler/kickstarts/CentOS7.5.ks
 *  cobbler profile list
 *  cobbler profile report --name=CentOS-7.5-x86\_64

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 21][]

*  **检测 ks 文件是否有错**

*  **ksvalidator /var/lib/cobbler/kickstarts/CentOS7.5.ks**
 *  **检测 KS 文件是否能正常访问**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 22][]

*  **如果无法访问，需要手动添加**
 *  **cp /var/lib/cobbler/kickstarts/CentOS7.5.ks /var/www/cobbler/svc/op/ks/profile/CentOS-7.5-x86\_64**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 23][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 24][]

*  ### **新建一个虚拟机测试安装，关闭 VMware Workstation 自带的 VMnetDHCP 服务** ###
 *  ### **注意安装 CentOS 7.X 的内存不能小于 2G ，否则会报错** ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 25][]

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![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 28][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 29][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 30][]

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![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 32][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 33][]

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*  ### **添加新的安装选项 Centos-6.9-x86\_64** ###
 *  挂载 Centos-6.9 光盘
 *  mount /sr0 /mnt/cdrom && mount /sr1 /mnt/cdrom1

![20200120144712142.png][]

*  Centos 6.9 有2张 安装DVD，导入DVD1 镜像后，将第2张 DVD上的 Packages/ 文件夹下，所有文件拷贝到 /var/www/cobbler/ks\_mirro/Centos-6.9-x86\_64/Packages 下面即可
 *  首先导入第一张DVD镜像
 *  cobbler import --path=/mnt/cdrom --name=Centos-6.9 --arch=x86\_64
 *  拷贝文件
 *  \\cp -r -a /mnt/cdrom1/Packages/\* /var/www/cobbler/ks\_mirror/Centos-6.9-x86\_64/Packages/
 *  查看列表
 *  cobbler profile list 
 *  **在导入镜像时如果提示，No signature matched in /var/www/cobbler/ks\_mirror/xxxxx-x86\_64，签名无法匹配**
    
    这个问题需要更改cobbler发行版本的配置文件
    
    \# cp /var/lib/cobbler/distro\_signatures.json\{，.bak\}
    
    \# vim /var/lib/cobbler/distro\_signatures.json
    
    **将配置中的对应版本修改为将要使用的版本**
    
    "version\_file\_regex":"^.\*xxxx 5\\\\.1\\\\.(.\*)build-(\[\\\\d\]+).\*$",
    
    改成
    
    "version\_file\_regex":"^.\*xxxx 5\\\\.5\\\\.(.\*)build-(\[\\\\d\]+).\*$",
    
    \#更改后重启cobber,重新导入镜像

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 34][]

*  总大小为 5.8 G
 *  **使用 cobbler profile list 命令查看列表有错误的话，可以删除掉重新添加**
 *  **cobbler profile remove --name=对应错误的名称**

--------------------

*  复制一份之前创建的 ks 自动应答文件，修改为对应的启动菜单名称
 *  \\cp -a /var/lib/cobbler/kickstarts/CentOS7.5.ks /var/lib/cobbler/kickstarts/CentOS6.9.ks

![20200120150739735.png][]

*  ### **注意 CentOS 6 系列默认不支持 xfs 硬盘分区格式，要做适当修改** ###
 *  bootloader --append="crashkernel=auto rhgb quiet" --location=mbr **--driveorder**="sda"      \#这里要改成 **--driveorder**
    
    network  --bootproto=dhcp --device=eth0 --onboot=on  
    zerombr  
    clearpart --all --initlabel  
    part /boot --fstype=ext4 \--size=200                                                                    \#修改为 ext4 ，更低版本CentOS的要修改成 ext3  
    part pv.008002 --grow --size=1  
    volgroup VolGroup --pesize=4096 pv.008002  
    logvol / --fstype=ext4 \--name=lv\_root --vgname=VolGroup --grow --size=1        \#修改为 ext4 ，更低版本CentOS的要修改成 ext3  
    logvol swap --name=lv\_swap --vgname=VolGroup  --size=2048
    
    %packages                                                             \#定制安装那些包  
    **@base**                                                                    \#基本包组，相当于最小化安装  
    @core                                                                                                                                                                        
    %end

--------------------

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 35][]

*  检测 ks 文件是否有错
 *  ksvalidator /var/lib/cobbler/kickstarts/CentOS6.9.ks

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 36][]

*  将 Centos6.9.ks 文件关联到 Centos-6.9-x86\_64
 *  cobbler profile list
 *  注意对应的名称
 *  cobbler profile edit --distro=Centos-6.9-x86\_64 --name=Centos-6.9-x86\_64 --kickstart=/var/lib/cobbler/kickstarts/CentOS6.9.ks
 *  cobbler profile report --name=Centos-6.9-x86\_64

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 37][]

*  重启 cobblerd 服务
 *  systemctl restart cobblerd
 *  cobblerd sync

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 38][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 39][]

*  --------------------
    
    打开刚才新建的虚拟机进行测试安装
 *  设置为从网络启动

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 40][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 41][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 42][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 43][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 44][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 45][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 46][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 47][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 48][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 49][]

--------------------

*  ### **如果卡在 tftp 读取，重点检查 tftpd 服务是否启动** ###
 *  ss -nultp|grep 69
 *  检查 引导文件是否存在以及大小
 *   ll -h /var/lib/tftpboot/menu.c32  
    \-rw-r--r-- 2 root root **54K Jul  2 10:20 /var/lib/tftpboot/menu.c32**  
     ll -h /var/lib/tftpboot/pxelinux.0  
    \-rw-r--r-- 2 root root **27K Jul  2 10:12 /var/lib/tftpboot/pxelinux.0**

![20210702102446903.png][]

*  如果大小有出入，重新拷贝文件
 *  \\cp /usr/share/syslinux/menu.c32 /var/lib/tftpboot/menu.c32
 *  \\cp /usr/share/syslinux/pxelinux.0 /var/lib/tftpboot/pxelinux.0

![20210702102735416.png][]

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[DHCP]: https://baike.baidu.com/item/DHCP/218195
[Link 1]: https://baike.baidu.com/item/%E9%9E%8B%E5%8C%A0
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20200120072057476.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg=,size_16,color_FFFFFF,t_70
[format_png]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly9pbWcyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTQ2NDk2NS8yMDE4MDkvMTQ2NDk2NS0yMDE4MDkyNTE4NDM1NjMzMy0xNDM0MzM4MzU3LnBuZw?x-oss-process=image/format,png
[Linux_ rpm _ yum_-CSDN]: https://blog.csdn.net/gaofei0428/article/details/102903468
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20200120082941740.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2dhb2ZlaTA0Mjg=,size_16,color_FFFFFF,t_70
[https_pkgs.org]: https://pkgs.org/
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[20200120085625700.png]: https://img-blog.csdnimg.cn/20200120085625700.png
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[Cobbler - Linux install and update server]: https://cobbler.github.io/
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[20200120084942571.png]: https://img-blog.csdnimg.cn/20200120084942571.png
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[20200120093328559.png]: https://img-blog.csdnimg.cn/20200120093328559.png
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[20200120095304851.png]: https://img-blog.csdnimg.cn/20200120095304851.png
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