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--- en:linux:diskless_pxe_nfs [2020/05/06 04:00]
alex created
+++ en:linux:diskless_pxe_nfs [2020/05/06 04:08] (current)
alex
@@ Line 11: / Line 11: @@
 Install necessary packages
+<code>
 # apt install isc-dhcp-server tftpd-hpa pxelinux nfs-kernel-server debootstrap
+</code>
 Configure network interface (ref: [[https://help.ubuntu.com/lts/serverguide/network-configuration.html.en]]).  In this case, eno1 is the external interface (facing the internet) and eno2 is the internal interface (facing the PXE booted hosts).
-# vim /etc/netplan/99_config.yaml
+Edit ''/etc/netplan/99_config.yaml''
 <code>
@@ Line 31: / Line 33: @@
 Configure DHCP (ref: [[https://help.ubuntu.com/community/isc-dhcp-server]])
-# vim /etc/dhcp/dhcpd.conf
+Edit ''/etc/dhcp/dhcpd.conf''
 <code>
@@ Line 50: / Line 52: @@
 </code>
-# vim /etc/dhcp/reactor-host-dhcp.conf
+Edit ''/etc/dhcp/reactor-host-dhcp.conf''
 <code>
@@ Line 64: / Line 66: @@
 </code>
-# vim /etc/dhcp/reactor-ilo-dhcp.conf
+Edit ''/etc/dhcp/reactor-ilo-dhcp.conf''
 <code>
@@ Line 76: / Line 78: @@
 </code>
-# vim /etc/default/isc-dhcp-server
+Edit ''/etc/default/isc-dhcp-server''
 <code>
@@ Line 84: / Line 86: @@
 Start DHCP server
-# systemctl enable --now isc-dhcp-server
+Run ''systemctl enable --now isc-dhcp-server''
 Configure TFTP
@@ Line 92: / Line 94: @@
 Configure PXE
+<code>
 # mkdir /srv/nfs/ubuntu
 # cd /var/lib/tftpboot
@@ Line 97: / Line 100: @@
 # cp /usr/lib/PXELINUX/pxelinux.0 /var/lib/tftpboot
 # cp -r /usr/lib/syslinux/modules/bios /var/lib/tftpboot/boot/isolinux
-# vim pxelinux.cfg/default
+</code>
+Edit ''/var/lib/tftpboot/pxelinux.cfg/default''
 <code>
@@ Line 120: / Line 125: @@
 </code>
+<code>
 # mkdir ubuntu
 # mount --bind /srv/nfs/ubuntu ubuntu
+</code>
-# vim /etc/fstab
+Edit ''/etc/fstab'' to append
-append
 <code>
@@ Line 138: / Line 143: @@
 Export install and required mounts
-# vim /etc/exports
+Edit ''/etc/exports''
 <code>
@@ Line 146: / Line 151: @@
 </code>
-# exportfs -rv
+Run ''exportfs -rv''
 ===== Client hosts =====
@@ Line 152: / Line 157: @@
 Install ubuntu for net boot clients (ref: [[https://help.ubuntu.com/community/Installation/OnNFSDrive]])
+<code>
 # mkdir /srv/nfs
 # cd /srv/nfs
-# vim run_debootstrap.sh
+</code>
+Edit ''run_debootstrap.sh''
 <code>
@@ Line 162: / Line 170: @@
 </code>
-# bash run_debootstrap.sh
+Run ''bash run_debootstrap.sh''
 Do not set /srv/nfs/ubuntu/etc/hostname, hostname will come from DHCP
+<code>
 # mount --bind /proc ubuntu/proc
 # chroot ubuntu
+</code>
 Set up locales
-# vi /etc/locale.gen
+Edit ''/etc/locale.gen'', uncomment locale (en_US.UTF-8)
-uncomment locale (en_US.UTF-8)
+Run ''locale-gen''
-# locale-gen
 Install kernel, nfs-common, and SSH server
 Do not install grub if prompted to do so
+<code>
 # apt install linux-image-generic nfs-common openssh-server
 # chmod a+r /boot/vmlinuz*
 # systemctl enable ssh
+</code>
-Enable serial console
+Enable serial console by running ''systemctl enable getty@ttyS1''
-# systemctl enable getty@ttyS1
 Set up fstab
-# vi /etc/fstab
+Edit ''/etc/fstab''
 <code>
@@ Line 206: / Line 214: @@
 Workaround for unreadable kernel image
-# vi /etc/kernel/postinst.d/chmod-vmlinuz
+Edit ''/etc/kernel/postinst.d/chmod-vmlinuz''
 <code>
@@ Line 214: / Line 222: @@
 </code>
-# chmod a+x /etc/kernel/postinst.d/chmod-vmlinuz
+Run ''chmod a+x /etc/kernel/postinst.d/chmod-vmlinuz''
 Edit initramfs settings for NFS boot
-# vi /etc/initramfs-tools/initramfs.conf
+Edit ''/etc/initramfs-tools/initramfs.conf''
 <code>
@@ Line 224: / Line 232: @@
 </code>
-Regenerate initramfs
+Regenerate initramfs by running ''update-initramfs -u''
-# update-initramfs -u
+Set root password and/or add users, install packages, etc.  Then:
-Set root password and/or add users, install packages, etc.
+<code>
 # exit
 # umount ubuntu/proc
+</code>
 At this point, it should be possible to boot a system over the network.
@@ Line 241: / Line 249: @@
 Note: make sure console is accessable over iLO just in case networking gets broken
-# vim /etc/default/ufw
+Edit ''/etc/default/ufw''
 <code>
@@ Line 247: / Line 255: @@
 </code>
-# vim /etc/ufw/sysctl.conf
+Edit ''/etc/ufw/sysctl.conf''
 <code>
@@ Line 253: / Line 261: @@
 </code>
-# vim /etc/ufw/before.rules
+Edit ''/etc/ufw/before.rules''
 [place immediately after header comment]
@@ Line 268: / Line 276: @@
 </code>
+<code>
 # ufw allow ssh
 # ufw allow in on eno2
 # ufw enable
+</code>