kickstart 自動安裝 CentOS7

環境

• CentOS7.6
• genisoimage 1.1.11
• CentOS-7-x86_64-Minimal-1810.iso

---

複製 iso 內容到本地磁盤

mount -o loop CentOS-7-x86_64-Minimal-1810.iso /mnt/
mkdir -p /home/iso/centos7
cd /mnt && cp -af * .* /home/iso/centos7/

---

建立 isolinux/ks.cfg

• mbr 啓動，/home/iso/centos7/isolinux/ks.cfg 內容以下

  # Install OS instead of upgrade
  install
  # Reboot after installation
  reboot
  # System authorization information
  auth --enableshadow --passalgo=sha512
  # Use CDROM installation media
  cdrom
  # Use graphical install
  graphical
  # Run the Setup Agent on first boot
  firstboot --enable
  ignoredisk --only-use=sda
  # Keyboard layouts
  keyboard --vckeymap=cn --xlayouts='cn'
  # System language
  lang zh_CN.UTF-8
  # Firewall configuration
  firewall --disabled
  # SELinux configuration
  selinux --disabled
  
  # Network information
  #network  --bootproto=dhcp --device=eth0 --onboot=off --ipv6=auto --no-activate
  #network  --hostname=localhost.localdomain
  
  # Root password(111111)
  rootpw --iscrypted $6$kD.hMvv5nCY8a/SM$Gnmb4zspkuyL75BP2Gj.1SGUaWBugXkd/zMFhoDndp9CSi8VP7R5JP7rfWzL4y7fy8crH3ryDT4PFkKCc7/xM.
  # System services
  services --enabled="chronyd"
  # System timezone
  timezone Asia/Shanghai --isUtc
  # Clear the Master Boot Record
  zerombr
  # System bootloader configuration
  bootloader --location=mbr --boot-drive=sda
  # Partition clearing information
  clearpart --none --initlabel
  # Disk partitioning information
  part /boot --fstype="xfs" --ondisk=sda --size=512
  part / --fstype="xfs" --ondisk=sda --grow --size=1
  
  %packages
  @^minimal
  @core
  chrony
  
  %end
  
  %post
  lsblk > /root/lsblk
  %end
  
  %addon com_redhat_kdump --disable --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

• efi 啓動，/home/iso/centos7/isolinux/ks.cfg 內容以下

  # Install OS instead of upgrade
  install
  # Reboot after installation
  reboot
  # System authorization information
  auth --enableshadow --passalgo=sha512
  # Use CDROM installation media
  cdrom
  # Use graphical install
  graphical
  # Run the Setup Agent on first boot
  firstboot --enable
  ignoredisk --only-use=sda
  # Keyboard layouts
  keyboard --vckeymap=cn --xlayouts='cn'
  # System language
  lang zh_CN.UTF-8
  # Firewall configuration
  firewall --disabled
  # SELinux configuration
  selinux --disabled
  
  # Network information
  #network  --bootproto=dhcp --device=eth0 --onboot=off --ipv6=auto --no-activate
  #network  --hostname=localhost.localdomain
  
  # Root password(111111)
  rootpw --iscrypted $6$kD.hMvv5nCY8a/SM$Gnmb4zspkuyL75BP2Gj.1SGUaWBugXkd/zMFhoDndp9CSi8VP7R5JP7rfWzL4y7fy8crH3ryDT4PFkKCc7/xM.
  # System services
  services --enabled="chronyd"
  # System timezone
  timezone Asia/Shanghai --isUtc
  # Clear the Master Boot Record
  zerombr
  # System bootloader configuration
  bootloader --location=mbr --boot-drive=sda
  # Partition clearing information
  clearpart --none --initlabel
  # Disk partitioning information
  part /boot --fstype="xfs" --ondisk=sda --size=512
  part /boot/efi --fstype="xfs" --ondisk=sda --size=512
  part / --fstype="xfs" --ondisk=sda --grow --size=1
  
  %packages
  @^minimal
  @core
  chrony
  
  %end
  
  %post
  %end
  
  %addon com_redhat_kdump --disable --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

---

修改啓動項文件

• mbr 啓動，只需修改 isolinux/isolinux.cfg
  • 刪除 "label check" 下的 "menu default" 一行
  • 在 "label linux" 一行上方添加以下內容

    label auto
      menu label ^Auto install CentOS 7
      menu default
      kernel vmlinuz
      append initrd=initrd.img inst.stage2=hd:LABEL=CentOS7 inst.ks=cdrom:/isolinux/ks.cfg quiet

• efi 啓動，只需修改 EFI/BOOT/grub.cfg
  • 修改第一行

    set default="0"

  • 在 "### BEGIN /etc/grub.d/10_linux ###" 一行下添加以下內容

    menuentry 'Auto Install CentOS 7' --class fedora --class gnu-linux --class gnu --class os {
        linuxefi /images/pxeboot/vmlinuz inst.ks=cdrom:/isolinux/ks.cfg inst.stage2=hd:LABEL=CentOS7 quiet
        initrdefi /images/pxeboot/initrd.img
    }

---

生成 ISO 鏡像

• mbr 啓動，執行以下命令

  genisoimage -v -R -J -T -V CentOS7 \
      -b isolinux/isolinux.bin \
      -c isolinux/boot.cat \
      -cache-inodes \
      -joliet-long \
      -no-emul-boot \
      -boot-load-size 4 \
      -boot-info-table \
      -o /home/centos7.iso \
      /home/iso/centos7

• efi 啓動，執行以下命令

  genisoimage -v -R -J -T -V CentOS7 \
     -b images/efiboot.img \
      -c isolinux/boot.cat \
      -cache-inodes \
      -joliet-long \
      -no-emul-boot \
      -boot-load-size 4 \
      -boot-info-table \
      -o /home/centos7-efi.iso \
      /home/iso/centos7