在Ubuntu 16.04.2 i386 Server 建置 PXE Server

安裝套件:

# apt-get install isc-dhcp-server apache2 tftpd-hpa inetutils-inetd lftp openbsd-inetd syslinux

編輯tftpd-hpa檔案:

# nano /etc/default/tftpd-hpa

修改成以下內容:

[…]
RUN_DAEMON=”yes”
OPTIONS=”-l -s /var/lib/tftpboot”

修改inetd.conf:

# nano /etc/inetd.conf

在最後新增以下一行:

tftp dgram udp wait root /usr/sbin/in.tftpd /usr/sbin/in.tftpd -s /var/lib/tftpboot

NOTE: if you are using IPv6, you would need to use udp4 instead of udp.

# update-inetd –enable BOOT

# /etc/init.d/openbsd-inetd restart

重啟tftpd-hpa:

# systemctl restart tftpd-hpa

檢查tftpd-hpa service status:

# systemctl status tftpd-hpa

確認以下訊息:

Active: active (running)

Mount安裝系統用ISO檔:

# mount -o loop <OS>.iso /mnt/

Mount完後cd進mnt並copy檔案至/var/lib/tftpboot:
cd ..

# cd /mnt/

# cp -fr install/netboot/* /var/lib/tftpboot/

在/var/www/html/下建立資料夾用來放置從ISO複製出來的檔案:

# mkdir /var/www/html/<Your desired name for the file>

複製ISO檔案:

# cp -fr /mnt/* /var/www/html/<Your loaction>

編輯 /var/lib/tftpboot/pxelinux.cfg/default file

# nano /var/lib/tftpboot/pxelinux.cfg/default

新增以下內容[需參考系統架構對應路徑]:

[…]
label linux
kernel ubuntu-installer/amd64/linux
append ks=http://<YOUR PXE SREVER IP>/ks.cfg vga=normal initrd=ubuntu-installer/amd64/initrd.gz
ramdisk_size=16432 root=/dev/rd/0 rw —

NOTE: 32-bit architecture can use the following code

[…]
label linux
kernel ubuntu-installer/i386/linux
append ks=http://<YOUR PXE SERVER IP>/ks.cfg vga=normal initrd=ubuntu-installer/i386/initrd.gz
ramdisk_size=16432 root=/dev/rd/0 rw —

配置 DHCP Server 網路介面

# nano /etc/default/isc-dhcp-server

INTERFACES=”Your Interface Name”

配置 DHCP Server 設定

# nano /etc/dhcp/dhcpd.conf

[…]
authoritative;
[…]

subnet 192.168.1.0 netmask 255.255.255.0 {
range 192.168.1.20 192.168.1.30;
option routers 192.168.1.1;
option broadcast-address 192.168.1.255;
default-lease-time 600;
max-lease-time 7200;
}

Add the following lines at the end
allow booting;
allow bootp;
option option-128 code 128 = string;
option option-129 code 129 = text;
next-server <YOUR PXE SERVER IP>;
filename “pxelinux.0”;

存檔離開並重啟DHCP服務及確認服務啟用狀態

# systemctl restart isc-dhcp-server

# systemctl status isc-dhcp-server