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casjay/cloudmin-kvm-redhat-install.sh

Created May 19, 2025 17:37
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cloudmin-kvm-redhat-install.sh
#!/bin/sh
# cloudmin-kvm-redhat-install.sh
# Copyright 2005-2011 Virtualmin, Inc.
#
# Installs Cloudmin GPL for KVM and all dependencies on a CentOS, RHEL or
# Fedora system.
VER=1.1
# Define functions
yesno () {
while read line; do
case $line in
y|Y|Yes|YES|yes|yES|yEs|YeS|yeS) return 0
;;
n|N|No|NO|no|nO) return 1
;;
*)
printf "\nPlease enter y or n: "
;;
esac
done
}
# Show help page
if [ "$1" = "--help" ]; then
echo $0 [--qemu] [--no-bridge | --bridge-interface ethN]
exit 0
fi
# Ask the user first
cat <<EOF
*******************************************************************************
* Welcome to the Cloudmin GPL for KVM installer, version $VER *
*******************************************************************************
Operating systems supported by this installer are:
Fedora Core 3-12 on i386 and x86_64
CentOS and RHEL 3-7 on i386 and x86_64
If your OS is not listed above, this script will fail (and attempting
to run it on an unsupported OS is not recommended, or...supported).
EOF
printf " Continue? (y/n) "
if ! yesno
then exit
fi
echo ""
# Check for non-kernel mode flag
if [ "$1" = "--qemu" ]; then
shift
qemu=1
fi
# Check for flag to disable bridge setup
if [ "$1" = "--no-bridge" ]; then
shift
nobridge=1
fi
# Check for flag for network interface
interface=eth0
if [ "$1" = "--bridge-interface" ]; then
shift
interface=$1
shift
fi
# Cleanup old repo files
rm -f /etc/yum.repos.d/vm2* /etc/yum.repos.d/cloudmin*
if [ "$qemu" != 1 ]; then
# Check for KVM-capable CPU
echo Checking for hardware support for KVM ..
grep -e vmx -e svm /proc/cpuinfo >/dev/null
if [ $? != 0 ]; then
echo .. not found. Make sure your CPU has Intel VT-x or AMD-V support
echo ""
exit 1
fi
echo .. found OK
echo ""
fi
# Check for the expected bridge interface
if [ "$nobridge" = "" ]; then
echo Checking for network interface $interface ..
(ifconfig -a ; ip addr ; true) 2>/dev/null | grep $interface >/dev/null
if [ "$?" != 0 ]; then
echo ".. not found. Use the --bridge-interface flag to set the correct interface"
exit 1
fi
echo .. found OK
echo ""
fi
# Check for yum
echo Checking for yum ..
if [ ! -x /usr/bin/yum ]; then
echo .. not installed. The Cloudmin installer requires YUM to download packages
echo ""
exit 1
fi
echo .. found OK
echo ""
# Make sure we have wget
echo "Installing wget .."
yum install -y wget
echo ".. done"
echo ""
# Check for wget or curl
echo "Checking for curl or wget..."
if [ -x "/usr/bin/curl" ]; then
download="/usr/bin/curl -s "
elif [ -x "/usr/bin/wget" ]; then
download="/usr/bin/wget -nv -O -"
else
echo "No web download program available: Please install curl or wget"
echo "and try again."
exit 1
fi
echo "found $download"
echo ""
# Create Cloudmin licence file
echo Creating Cloudmin licence file
cat >/etc/server-manager-license <<EOF
SerialNumber=GPL
LicenseKey=GPL
EOF
chmod 600 /etc/server-manager-license
# Download GPG keys
echo Downloading GPG keys for packages ..
$download "http://software.virtualmin.com/lib/RPM-GPG-KEY-virtualmin" >/etc/pki/rpm-gpg/RPM-GPG-KEY-virtualmin
if [ "$?" != 0 ]; then
echo .. download failed
exit 1
fi
$download "http://software.virtualmin.com/lib/RPM-GPG-KEY-webmin" >/etc/pki/rpm-gpg/RPM-GPG-KEY-webmin
if [ "$?" != 0 ]; then
echo .. download failed
exit 1
fi
echo .. done
echo ""
# Import keys
echo Importing GPG keys ..
rpm -q gpg-pubkey-a0bdbcf9-42d1d837 || rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-virtualmin
rpm -q gpg-pubkey-11f63c51-3c7dc11d || rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-webmin
echo .. done
echo ""
# Setup the YUM repo file
echo Creating YUM repository for Cloudmin packages ..
cat >/etc/yum.repos.d/cloudmin.repo <<EOF
[cloudmin-universal]
name=Cloudmin Distribution Neutral
baseurl=http://cloudmin.virtualmin.com/kvm/universal/
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-virtualmin
gpgcheck=1
EOF
echo .. done
echo ""
# YUM install Perl, modules and other dependencies
echo Installing required Perl modules using YUM ..
yum install -y perl openssl perl-Net-SSLeay bind bind-utils bridge-utils lsof parted perl-Data-Dumper bzip2 psmisc qemu-kvm libvirt virt-install libvirt-daemon-kvm
if [ "$?" != 0 ]; then
echo .. install failed
exit 1
fi
yum install -y kmod-kvm
yum install -y perl-JSON
yum install -y dhcp
yum install -y ebtables
yum install -y openssh-clients
yum install -y libcgroup-tools
yum install -y vixie-cron || yum install -y cronie
echo .. done
echo ""
# Activate cgroups
echo Installing and activating cgroups ..
yum install -y libcgroup
if [ "$?" != 0 ]; then
echo .. install failed - CPU limits will not be available
else
service cgconfig start
chkconfig cgconfig on
echo .. done
fi
echo ""
# Activate KVM kernel module
if [ "$qemu" != 1 ]; then
echo Activating KVM kernel module ..
modprobe kvm-intel || modprobe kvm-amd
/sbin/lsmod | grep kvm >/dev/null
if [ "$?" != 0 ]; then
echo .. kernel module did not load successfully
exit 1
fi
sleep 5
if [ ! -e /dev/kvm ]; then
echo .. KVM device file /dev/kvm is missing
exit 1
fi
echo .. done
echo ""
fi
# Create loop devices if missing
echo Creating /dev/loop devices ..
for loop in 0 1 2 3 4 5 6 7; do
if [ ! -r "/dev/loop$loop" ]; then
mknod "/dev/loop$loop" b 7 $loop
fi
done
echo .. done
echo ""
# YUM install webmin, theme and Cloudmin
echo Installing Cloudmin packages using YUM ..
yum install -y webmin wbm-server-manager wbt-virtual-server-theme
if [ "$?" != 0 ]; then
echo .. install failed
exit 1
fi
mkdir -p /kvm
echo .. done
echo ""
# Configure Webmin to use theme
echo Configuring Webmin ..
grep -v "^preroot=" /etc/webmin/miniserv.conf >/tmp/miniserv.conf.$$
echo preroot=authentic-theme >>/tmp/miniserv.conf.$$
cat /tmp/miniserv.conf.$$ >/etc/webmin/miniserv.conf
rm -f /tmp/miniserv.conf.$$
grep -v "^theme=" /etc/webmin/config >/tmp/config.$$
echo theme=authentic-theme >>/tmp/config.$$
cat /tmp/config.$$ >/etc/webmin/config
rm -f /tmp/config.$$
/etc/webmin/restart
echo .. done
echo ""
# Setup BIND zone for virtual systems
basezone=`hostname -d`
if [ "$basezone" = "" ]; then
basezone=example.com
fi
zone="cloudmin.$basezone"
echo Creating DNS zone $zone ..
/usr/libexec/webmin/server-manager/setup-bind-zone.pl --zone $zone --auto-view
if [ "$?" != 0 ]; then
echo .. failed
else
echo kvm_zone=$zone >>/etc/webmin/server-manager/config
echo kvm_zone=$zone >>/etc/webmin/server-manager/this
echo .. done
fi
echo ""
# Set Qemu mode flag
if [ "$qemu" = 1 ]; then
echo kvm_qemu=1 >>/etc/webmin/server-manager/config
fi
# Enable bridge
if [ "$nobridge" = "" ]; then
echo Creating network bridge ..
/usr/libexec/webmin/server-manager/setup-kvm-bridge.pl $interface
brex=$?
if [ "$brex" = 0 ]; then
echo .. already active
else
if [ "$brex" = 1 ]; then
echo .. done
else
echo .. bridge creation failed
fi
fi
echo ""
fi
# Open Webmin firewall port
echo Opening port 10000 on IPtables firewall ..
ports="10000 10001 10002 10003 10004 10005 843"
/usr/libexec/webmin/firewall/open-ports.pl $ports
if [ "$?" != 0 ]; then
echo .. failed
else
echo .. done
fi
echo ""
# Open firewalld ports
if [ -x /usr/bin/firewall-cmd ]; then
echo Opening port 10000 on Firewalld firewall ..
for port in $ports; do
/usr/bin/firewall-cmd --add-port=$port/tcp >/dev/null
/usr/bin/firewall-cmd --permanent --add-port=$port/tcp >/dev/null
done
echo .. done
echo ""
fi
# Tell user about need to reboot
hostname=`hostname`
if [ "$brex" = 1 ]; then
echo Cloudmin GPL has been successfully installed. However, you will
echo need to reboot to activate the network bridge before any KVM
echo instances can be created.
echo
echo One this is done, you can login to Cloudmin at :
echo https://$hostname:10000/
else
echo Cloudmin GPL has been successfully installed.
echo
echo You can login to Cloudmin at :
echo https://$hostname:10000/
fi
# All done!
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