Update centos75-hpc.ks to support Gen2 VMs

Author: N3WWN

ks/azure/centos75-hpc.ks

@@ -31,21 +31,26 @@ services --enabled="sshd,waagent,dnsmasq,NetworkManager"
 # System timezone
 timezone Etc/UTC --isUtc
 
-# Partition clearing information
-clearpart --all --initlabel
-
-# Clear the MBR
+# Partitioning and bootloader configuration
+# Note: biosboot and efi partitions are pre-created %pre to work around blivet issue
 zerombr
-
-# Disk partitioning information
+bootloader --location=mbr --timeout=1
+# part biosboot --onpart=sda14 --size=4
+part /boot/efi --onpart=sda15 --fstype=vfat --size=500
 part /boot --fstype="xfs" --size=500
 part / --fstype="xfs" --size=1 --grow --asprimary
 
-# System bootloader configuration
-bootloader --location=mbr --timeout=1
+%pre --log=/var/log/anaconda/pre-install.log --erroronfail
+#!/bin/bash
+
+# Pre-create the biosboot and EFI partitions
+sgdisk --clear /dev/sda
+sgdisk --new=14:2048:10239 /dev/sda
+sgdisk --new=15:10240:500M /dev/sda
+sgdisk --typecode=14:EF02 /dev/sda
+sgdisk --typecode=15:EF00 /dev/sda
 
-# Add OpenLogic repo
-repo --name=openlogic --baseurl=http://olcentgbl.trafficmanager.net/openlogic/7/openlogic/x86_64/
+%end
 
 # Firewall configuration
 firewall --disabled
@@ -86,6 +91,10 @@ redhat-lsb
 -hypervkvpd
 -hyperv-daemons
 -dracut-config-rescue
+nfs-utils
+# enable rootfs resize on boot
+cloud-utils-growpart
+gdisk
 
 %end
 
@@ -96,9 +105,12 @@ redhat-lsb
 # Disable the root account
 usermod root -p '!!'
 
+# Set these to the point release baseurls so we can recreate a previous point release without current major version updates
 # Set OL repos
 curl -so /etc/yum.repos.d/CentOS-Base.repo https://raw.githubusercontent.com/szarkos/AzureBuildCentOS/master/config/azure/CentOS-Base-7.repo
 curl -so /etc/yum.repos.d/OpenLogic.repo https://raw.githubusercontent.com/szarkos/AzureBuildCentOS/master/config/azure/OpenLogic.repo
+sed -i -e 's/$releasever/7.5.1804/' /etc/yum.repos.d/CentOS-Base.repo
+sed -i -e 's/$releasever/7.5.1804/' /etc/yum.repos.d/OpenLogic.repo
 
 # Import CentOS and OpenLogic public keys
 curl -so /etc/pki/rpm-gpg/OpenLogic-GPG-KEY https://raw.githubusercontent.com/szarkos/AzureBuildCentOS/master/config/OpenLogic-GPG-KEY
@@ -112,14 +124,46 @@ sed -i 's/^\(GRUB_CMDLINE_LINUX\)=".*"$/\1="console=tty1 console=ttyS0,115200n8
 echo 'GRUB_SERIAL_COMMAND="serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1"' >> /etc/default/grub
 sed -i 's/^GRUB_TERMINAL_OUTPUT=".*"$/GRUB_TERMINAL="serial console"/g' /etc/default/grub
 
+# Enable BIOS bootloader
+grub2-mkconfig --output /etc/grub2-efi.cfg
+grub2-install --target=i386-pc --directory=/usr/lib/grub/i386-pc/ /dev/sda
+grub2-mkconfig --output=/boot/grub2/grub.cfg
+
+# Grab major version number so we can properly adjust grub config.
+# Should work on both RHEL and CentOS reliably
+majorVersion=$(rpm -E %{rhel})
+
+ # Fix grub.cfg to remove EFI entries, otherwise "boot=" is not set correctly and blscfg fails
+ [ "$majorVersion" = "7" ] && {
+   EFI_ID=`blkid -s UUID -o value /dev/sda15`
+   EFI_ID=`blkid -s UUID -o value /dev/sda1`
+   sed -i 's|$prefix/grubenv|(hd0,gpt15)/efi/centos/grubenv|' /boot/grub2/grub.cfg
+   sed -i 's|load_env|load_env -f (hd0,gpt15)/efi/centos/grubenv|' /boot/grub2/grub.cfg
+
+   # Required for CentOS 7.x due to no blscfg: https://bugzilla.redhat.com/show_bug.cgi?id=1570991#c6
+   #cat /etc/grub2-efi.cfg | sed -e 's|linuxefi|linux|' -e 's|initrdefi|initrd|' > /boot/grub2/grub.cfg
+   sed -i -e 's|linuxefi|linux|' -e 's|initrdefi|initrd|' /boot/grub2/grub.cfg
+ }
+ [ "$majorVersion" = "8" ] && {
+   EFI_ID=`blkid --match-tag UUID --output value /dev/sda15`
+   BOOT_ID=`blkid --match-tag UUID --output value /dev/sda1`
+   sed -i 's|${config_directory}/grubenv|(hd0,gpt15)/efi/centos/grubenv|' /boot/grub2/grub.cfg
+ }
+ sed -i 's/gpt15/gpt1/' /boot/grub2/grub.cfg
+ sed -i "s/${EFI_ID}/${BOOT_ID}/" /boot/grub2/grub.cfg
+ sed -i '/^### BEGIN \/etc\/grub.d\/30_uefi/,/^### END \/etc\/grub.d\/30_uefi/{/^### BEGIN \/etc\/grub.d\/30_uefi/!{/^### END \/etc\/grub.d\/30_uefi/!d}}' /boot/grub2/grub.cfg
+
 # Blacklist the nouveau driver
 cat << EOF > /etc/modprobe.d/blacklist-nouveau.conf
 blacklist nouveau
 options nouveau modeset=0
 EOF
 
-# Rebuild grub.cfg
-grub2-mkconfig -o /boot/grub2/grub.cfg
+# Ensure Hyper-V drivers are built into initramfs
+echo '# Ensure Hyper-V drivers are built into initramfs'	>> /etc/dracut.conf.d/azure.conf
+echo -e "\nadd_drivers+=\"hv_vmbus hv_netvsc hv_storvsc\""	>> /etc/dracut.conf.d/azure.conf
+kversion=$( rpm -q kernel | sed 's/kernel\-//' )
+dracut -v -f "/boot/initramfs-${kversion}.img" "$kversion"
 
 # Enable SSH keepalive
 sed -i 's/^#\(ClientAliveInterval\).*$/\1 180/g' /etc/ssh/sshd_config
@@ -217,6 +261,11 @@ echo "http_caching=packages" >> /etc/yum.conf
 yum history sync
 yum clean all
 
+# Download these again after the HPC build stage so we can recreate a previous point release without current major version updates
+# Set OL repos
+curl -so /etc/yum.repos.d/CentOS-Base.repo https://raw.githubusercontent.com/szarkos/AzureBuildCentOS/master/config/azure/CentOS-Base-7.repo
+curl -so /etc/yum.repos.d/OpenLogic.repo https://raw.githubusercontent.com/szarkos/AzureBuildCentOS/master/config/azure/OpenLogic.repo
+
 # Set tuned profile
 echo "virtual-guest" > /etc/tuned/active_profile