From 983c7722cdac487f437d56f0fb4e5916e019aea4 Mon Sep 17 00:00:00 2001
From: Adrien <adrien@reslinger.net>
Date: Sun, 12 Apr 2020 12:18:54 +0200
Subject: [PATCH] Add install-pxe script for CentOS 8

---
 files/usr/local/sbin/install_pxe_CentOS7.sh |   0
 files/usr/local/sbin/install_pxe_CentOS8.sh | 100 ++++++++++++++++++++
 2 files changed, 100 insertions(+)
 mode change 100644 => 100755 files/usr/local/sbin/install_pxe_CentOS7.sh
 create mode 100755 files/usr/local/sbin/install_pxe_CentOS8.sh

diff --git a/files/usr/local/sbin/install_pxe_CentOS7.sh b/files/usr/local/sbin/install_pxe_CentOS7.sh
old mode 100644
new mode 100755
diff --git a/files/usr/local/sbin/install_pxe_CentOS8.sh b/files/usr/local/sbin/install_pxe_CentOS8.sh
new file mode 100755
index 0000000..c2d6643
--- /dev/null
+++ b/files/usr/local/sbin/install_pxe_CentOS8.sh
@@ -0,0 +1,100 @@
+#/bin/bash
+
+if ! which wget; then
+	yum install -y wget
+fi
+
+IF="$(ip route show | grep ^default | sed 's/.* dev \([^ ]*\) *.*/\1/' | sort -u)"
+IP="$(ip addr show $IF | grep inet\  | awk '{print $2}' | cut -d/ -f1)"
+PREFIX="$(ip addr show $IF | grep inet\  | awk '{print $2}' | cut -d/ -f2)"
+MASK="$(ipcalc -m $IP/$PREFIX | cut -d= -f2)"
+GW="$(ip route show | grep ^default | sed 's/.* via \([^ ]*\) *.*/\1/' | sort -u)"
+MAC="$(ip addr show $IF | grep ether\  | awk '{print $2}' | cut -d/ -f2 | tr [A-Z] [a-z])"
+DNS="$(grep nameserver /etc/resolv.conf | grep -v 127.0.0.1 | awk '{printf $2","}' | sed 's/,$//')"
+ARCH=$(uname -m | sed 's|i.86|i386|')
+
+MIRROIR=http://mirror.centos.org/centos/8/BaseOS/$ARCH/os
+#MIRROIR=http://lune.saacy.reslinger.net/repos/CentOS8/$ARCH/os
+#DESKTOP=desktop
+INST_OPTIONS="lang=fr_FR keymap=fr-latin9 panic=1 ks.sendsn ks.sendmac inst.sshd=1 net.ifnames=0 biosdevname=0 $DESKTOP"
+INST_OPTIONS="${INST_OPTIONS} inst.vnc inst.vncpassword=SDFGHJKL"
+if [ -z "$DNS" ]; then
+	if [ $(whois $IP | grep -ci dedibox) -gt 0 ]; then
+		# Dedibox
+		DNS=62.210.16.6,62.210.16.7
+	else
+		# OVH
+		DNS=213.186.33.99
+		#DNS=46.246.46.46,194.132.32.23
+	fi
+fi
+if [ $(mount | grep -c /boot\ ) -eq 1 ]; then
+    PARTBOOT=""
+else
+    PARTBOOT="/boot"
+fi
+cd /boot
+wget "$MIRROIR"/isolinux/{vmlinuz,initrd.img}
+if [ $(ip link show | grep ^[0-9] | grep -v lo: | wc -l) -eq 1 ]; then
+	INST_OPTIONS="ks.device=link ${INST_OPTIONS}"
+else
+	INST_OPTIONS="ks.device=$MAC ${INST_OPTIONS}"
+fi
+if [ ! -z "$STATIC" ]; then
+	INST_OPTIONS="ip=$IP::$GW:$MASK:$(hostname -s):$IF:off:${DNS/,*} ${INST_OPTIONS}"
+fi
+if [ -f /boot/grub/grub.conf ]; then
+	cat >> /boot/grub/grub.conf <<EOF
+title CentOS 8 Install (PXE)
+        root (hd0,0)
+        kernel $PARTBOOT/vmlinuz ${INST_OPTIONS} inst.ks=http://boot.reslinger.net/ks8.cfg inst.stage2=$MIRROIR ${CONSOLE}
+        initrd $PARTBOOT/initrd.img
+EOF
+	NB="$(grep -Ev '^($| *#)' /boot/grub/grub.conf | grep -c title)"
+	NB=$[$NB-1]
+	echo -e "savedefault --default=$NB --once\nquit\n" | grub --batch
+elif [ -f /boot/grub2/grub.cfg ]; then
+  if [ $(sed 's/ /\n/g' /proc/cmdline | grep -c console) -gt 1 ]; then
+	#  echo "On ajoute les console pour avoir une config également en serial"
+	  CONSOLE="$(for i in `sed 's/ /\n/g' /proc/cmdline | grep console`; do echo -n "$i "; done | sed 's/ $//')"
+  fi
+
+	#BOOT_DISK="$(df -hP /boot/ | awk '{print $1}' | tail -n1)"
+	BOOT_DISK="$(mount | grep -e '\s'"`df -h /boot | tail -n1 | awk '{print $6}'`"'\s' | cut -f1 -d\ )"
+	#BOOT_UUID="$(tune2fs -l ${BOOT_DISK} | grep UUID | awk '{print $3}')"
+	BOOT_UUID="$(blkid ${BOOT_DISK} | sed 's/.*\sUUID="\([^ ]*\)".*/\1/')"
+	if [ $(echo "${BOOT_DISK}" | grep -c /dev/md) -eq 1 ]; then
+		# Pas forcement /dev/md2 !!!
+	    UUID_BOOT_DISK="mduuid/$(mdadm --detail ${BOOT_DISK} | grep UUID | awk '{print $3}' | sed 's/://g')"
+	else
+	    #echo "UUID_BOOT_DISK non defini" >&2
+	    #exit 1
+	    UUID_BOOT_DISK="${BOOT_UUID}"
+	fi
+
+	cat >> /etc/grub.d/40_custom <<EOF
+menuentry 'CentOS 8 Install (PXE)' --unrestricted {
+        set root='${UUID_BOOT_DISK}'
+        if [ x\$feature_platform_search_hint = xy ]; then
+          search --no-floppy --fs-uuid --set=root --hint='${UUID_BOOT_DISK}' ${BOOT_UUID}
+        else
+          search --no-floppy --fs-uuid --set=root ${BOOT_UUID}
+        fi
+        linux $PARTBOOT/vmlinuz ${INST_OPTIONS} inst.ks=http://boot.reslinger.net/ks8.cfg inst.stage2=$MIRROIR ${CONSOLE}
+        initrd  $PARTBOOT/initrd.img
+}
+EOF
+	if [ -d /sys/firmware/efi -a -e /boot/efi/EFI/centos/grub.cfg ]; then
+		CONFDIR=/boot/efi/EFI/centos
+	else
+		CONFDIR=/boot/grub2
+	fi
+	grub2-mkconfig --output="${CONFDIR}"/grub.cfg
+	grub2-reboot 'CentOS 8 Install (PXE)'
+else
+	echo "Bootloader non identifié !" >&2
+	exit 1
+fi
+
+# avec tigervnc:
+# vncviewer CompressLevel 9 FullColor 176.31.103.156:1