Knowledge Base

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Install CentOS 8 with kickstart and virt-install

bgstack15

2019-10-27 09:06

This is a modification of my process for using virt-install to fully automate the install for CentOS/Fedora with kickstart. Here is my kickstart file for CentOS 8. Only minor modifications were required. A few packages aren't available yet, but I've stopped using them, and a few renames.

How I use this

I define a variable, and plug it into the important parts.

vm=c8-02a ; time sudo virt-install -n "${vm}" --memory 2048 --vcpus=1 --os-variant=centos7.0 --accelerate -v --disk path=/var/lib/libvirt/images/"${vm}".qcow2,size=20 -l /mnt/public/Support/SetupsBig/Linux/CentOS-8-x86_64-1905-dvd1.iso --initrd-inject=/mnt/public/Support/Platforms/CentOS8/centos8-ks.cfg --extra-args "ks=file:/centos8-ks.cfg SERVERNAME=${vm} NOTIFYEMAIL=bgstack15@gmail.com net.ifnames=0 biosdevname=0" --debug --network type=bridge,source=br0 --noautoconsole

Some thoughts

The repository URLs are a little different for CentOS 8, but once I had one built I could examine the URLS and correct my kickstart to use my local repos.

Dependencies

The network card of the host machine should be bridged, so that you can add bridged virtual NICs like the oneliner does.
centos 8 iso

The kickstart file

# File: /mnt/public/Support/Platforms/CentOS8/centos8-ks.cfg
# Locations:
#    /mnt/public/Support/Platforms/CentOS8/centos8-ks.cfg
# Author: bgstack15
# Startdate: 2017-06-02
# Title: Kickstart for CentOS 8 for ipa.example.com
# Purpose: To provide an easy installation for VMs and other systems in the Mersey network
# History:
#    2017-06 I learned how to use kickstart files for the RHCSA EX-200 exam
#    2017-08-08 Added notifyemail to --extra-args
#    2017-10-29 major revision to use local repository
#
#
#
#
#    2019-09-24 fork for CentOS 8
# Usage with virt-install:
#    vm=c8-01a ; time sudo virt-install -n "${vm}" --memory 2048 --vcpus=1 --os-variant=centos7.0 --accelerate -v --disk path=/var/lib/libvirt/images/"${vm}".qcow2,size=20 -l /mnt/public/Support/SetupsBig/Linux/CentOS-8-x86_64-1905-dvd1.iso --initrd-inject=/mnt/public/Support/Platforms/CentOS8/centos8-ks.cfg --extra-args "ks=file:/centos8-ks.cfg SERVERNAME=${vm} NOTIFYEMAIL=bgstack15@gmail.com net.ifnames=0 biosdevname=0" --debug --network type=bridge,source=br0 --noautoconsole
#    vm=c8-01a; sudo virsh destroy "${vm}"; sudo virsh undefine --remove-all-storage "${vm}";
# Reference:
#    https://sysadmin.compxtreme.ro/automatically-set-the-hostname-during-kickstart-installation/
#    /mnt/public/Support/Platforms/CentOS7/install-vm.txt

#platform=x86, AMD64, or Intel EM64T
#version=DEVEL
# Install OS instead of upgrade
install
# Keyboard layouts
keyboard 'us'
# Root password
rootpw --plaintext f0rg3tkickstart&
# my user
user --groups=wheel --name=bgstack15-local --password=$6$.gh9u7vg2HDJPPX/$g3X1l.q75fs7i0UKUt6h88bDIo1YSGGj/1DGeUzzbMTb0pBh4of6iNYWyxws/937qUiPgETqOsYFI5XNrkaUe. --iscrypted --gecos="bgstack15-local"

# System language
lang en_US.UTF-8
# Firewall configuration
firewall --enabled --ssh
# Reboot after installation
reboot
# Network information
#attempting to put it in the included ks file that accepts hostname from the virsh command.
#network  --bootproto=dhcp --device=eth0 --ipv6=auto --activate
%include /tmp/network.ks
# System timezone
timezone America/New_York --utc
# System authorization information
auth  --useshadow  --passalgo=sha512
# Use network installation instead of CDROM installation media
url --url="http://www.ipa.example.com/mirror/centos/8/BaseOS/x86_64/os"

# Use text mode install
text
# SELinux configuration
selinux --enforcing
# Do not configure the X Window System
skipx

# Use all local repositories
# Online repos
repo --name=examplerpm --baseurl=http://www.ipa.example.com/example/repo/rpm/
repo --name=base --baseurl=https://www.ipa.example.com/mirror/centos/$releasever/BaseOS/$basearch/os/
repo --name=appstream --baseurl=https://www.ipa.example.com/mirror/centos/$releasever/AppStream/$basearch/os/
repo --name=extras --baseurl=https://www.ipa.example.com/mirror/centos/$releasever/extras/$basearch/os/
repo --name=powertools --baseurl=https://www.ipa.example.com/mirror/centos/$releasever/PowerTools/$basearch/os/
repo --name=epel --baseurl=https://www.ipa.example.com/mirror/fedora/epel/$releasever/Everything/$basearch

# Offline repos
#
#
#
#
#

firstboot --disabled

# System bootloader configuration
bootloader --location=mbr
# Partition clearing information
clearpart --all --initlabel
# Disk partitioning information
autopart --type=lvm

%pre
echo "network  --bootproto=dhcp --device=eth0 --ipv6=auto --activate --hostname renameme.ipa.example.com" > /tmp/network.ks
for x in $( cat /proc/cmdline );
do
   case $x in
      SERVERNAME*)
         eval $x
         echo "network  --bootproto=dhcp --device=eth0 --ipv6=auto --activate --hostname ${SERVERNAME}.ipa.example.com" > /tmp/network.ks
         ;;
      NOTIFYEMAIL*)
         eval $x
         echo "${NOTIFYEMAIL}" > /mnt/sysroot/root/notifyemail.txt
     ;;
   esac
done
cp -p /run/install/repo/ca-ipa.example.com.crt /etc/pki/ca-trust/source/anchors/ 2>/dev/null || :
wget http://www.ipa.example.com/example/certs/ca-ipa.example.com.crt -O /etc/pki/ca-trust/source/anchors/ca-ipa.example-wget.com.crt || :
update-ca-trust || :
%end

%post
(
   # Set temporary hostname
   #hostnamectl set-hostname renameme.ipa.example.com;

   ifup eth0
   sed -i -r -e 's/ONBOOT=.*/ONBOOT=yes/;' /etc/sysconfig/network-scripts/ifcfg-e*

   # Get local mirror root ca certificate
   wget http://www.ipa.example.com/example/certs/ca-ipa.example.com.crt -O /etc/pki/ca-trust/source/anchors/ca-ipa.example.com.crt && update-ca-trust

   # Get local mirror repositories
   wget https://www.ipa.example.com/example/repo/rpm/examplerpm.repo -O /etc/yum.repos.d/examplerpm.repo;
   wget http://www.ipa.example.com/example/repo/rpm/examplerpm.mirrorlist -O /etc/yum.repos.d/examplerpm.mirrorlist
   distro=centos8 ; wget https://www.ipa.example.com/example/repo/mirror/example-bundle-${distro}.repo -O /etc/yum.repos.d/example-bundle-${distro}.repo && grep -oP "(?<=^\[).*(?=-example])" /etc/yum.repos.d/example-bundle-${distro}.repo | while read thisrepo; do yum-config-manager --disable "${thisrepo}"; done # NONE TO REMOVE dnf -y remove dnfdragora ; yum clean all ; yum update -y ; # Remove graphical boot and add serial console sed -i -r -e '/^GRUB_CMDLINE_LINUX=/{s/(\s*)(rhgb|quiet)\s*/\1/g;};' -e '/^GRUB_CMDLINE_LINUX=/{s/(\s*)\"$/ console=ttyS0 console=tty1\"/;}' /etc/default/grub grub2-mkconfig > /boot/grub2/grub.cfg

   # postfix is already started by default on centos8
   # Send IP address to myself
   thisip="$( ifconfig 2>/dev/null | awk '/Bcast|broadcast/{print $2}' | tr -cd '[^0-9\.\n]' | head -n1 )"
   {
      echo "${SERVER} has IP ${thisip}."
      echo "system finished kickstart at $( date "+%Y-%m-%d %T" )";
   } | /usr/share/bgscripts/send.sh -f "root@$( hostname --fqdn )" \
      -h -s "${SERVER} is ${thisip}" $( cat /root/notifyemail.txt 2>/dev/null )

   # No changes to graphical boot
   #

   # fix the mkhomedir problem
   systemctl enable oddjobd.service && systemctl start oddjobd.service

   # Personal customizations
   mkdir -p /mnt/bgstack15 /mnt/public
   su bgstack15-local -c "sudo /usr/share/bgconf/bgconf.py"

) >> /root/install.log 2>&1
%end

%packages
@core
@^minimal install
bc
bgconf
bgscripts-core
bind-utils
cifs-utils
cryptsetup
dosfstools
epel-release
expect
firewalld
git
iotop
ipa-client
-iwl*-firmware
mailx
man
mlocate
net-tools
nfs-utils
p7zip
parted
python3-policycoreutils
rpm-build
rsync
screen
strace
sysstat
tcpdump
telnet
vim
wget
yum-utils
%end