Automated Alamlinux Install with KVM

install-almalinux.sh

#!/bin/bash

function install-almalinux-usage() {
    cat <<EOF  1>&2
$0 [options] name

    -l INSTALL_ISO         AlmaLinux ISO                     [Example: ${VM_INSTALL_ISO}]
    -b BOOTPROTO           IPv4 boot protocol (dhcp/static)  [Example: ${VM_IP_BOOTPROTO}]
    -i IP_ADDR             IPv4 address                      [Example: ${VM_IP_ADDR}]
    -m IP_NETMASK          IPv4 netmask                      [Example: ${VM_IP_NETMASK}]
    -g GATEWAY             IPv4 gateway                      [Example: ${VM_GATEWAY}]
    -n NAME_SERVER         IPv4 name server                  [Example: ${VM_NAMESERVER}]
    -v NET_DEVICE          Network device name in VM         [Example: ${VM_NET_DEVIDE}]
    -k NET_IF              Network interface to attach       [Example: ${VM_NET_IF}]
    -o HOSTNAME            Hostname                          [Example: ${VM_HOSTNAME}]
    -d DISK_SIZE           Disk size (in giga byte)          [Example: ${VM_DISKSIZE_G}]
    -r RAMSIZE_M           RAM size (in mega byte)           [Example: ${VM_RAMSIZE_M}]
    -u CPU_NUM             # of CPU                          [Example: ${VM_CPU_NUM}]
    -t TIMEZONE            Timezone                          [Example: ${VM_TIMEZONE}]
    -p NTP_SERVER          NTP Server                        [Example: ${VM_NTP_SEVER}]
    -e ENCRYPTED_ROOTPW    Encrypted root password           [Create with \`python3 -c 'import crypt,getpass;pw=getpass.getpass();print(crypt.crypt(pw) if (pw==getpass.getpass("Confirm: ")) else exit())'\`]
    -s ROOT_SSHKEY         Root ssh key
EOF
    exit 1
}


function install-almalinux() {
    set -eu -o pipefail

    VM_INSTALL_ISO=${DEFAULT_VM_INSTALL_ISO:-/nfs1/data/linux-iso/AlmaLinux-8.5-x86_64-dvd.iso}
    VM_IP_BOOTPROTO=${DEFAULT_VM_IP_BOOTPROTO:-static}
    VM_IP_ADDR=${DEFAULT_VM_IP_ADDR:-192.168.10.50}
    VM_IP_NETMASK=${DEFAULT_VM_IP_NETMASK:-255.255.255.0}
    VM_GATEWAY=${DEFAULT_VM_GATEWAY:-192.168.10.1}
    VM_NAMESERVER=${DEFAULT_VM_NAMESERVER:-192.168.10.1}
    VM_NET_DEVIDE=${DEFAULT_VM_NET_DEVIDE:-enp1s0}
    VM_NET_IF=${DEFAULT_VM_NET_IF:-network=default}
    VM_HOSTNAME=${DEFAULT_VM_HOSTNAME:-localhost.localdomain}
    VM_DISKSIZE_G=${DEFAULT_VM_DISKSIZE_G:-50}
    VM_RAMSIZE_M=${DEFAULT_VM_RAMSIZE_M:-4096}
    VM_CPU_NUM=${DEFAULT_VM_CPU_NUM:-2}
    VM_NTP_SEVER=${DEFAULT_VM_NTP_SEVER:-ntp.nict.jp}
    VM_TIMEZONE=${DEFAULT_VM_TIMEZONE:-Asia/Tokyo}
    VM_ENCRYPTED_ROOTPW=${DEFAULT_VM_ENCRYPTED_ROOTPW:-'$6$Eea/ka1jKRM4PYIs$5uklsxAC5kbxJ8hsijiKwvWGtGWBi9bL0L0PZzSm8G.XyZud9DWo85CaSCxiGNPLH0X8vTfL9hi29OKpE2uEQ.'}
    VM_ROOT_SSHKEY=${DEFAULT_VM_ROOT_SSHKEY:-}
    
    while getopts l:b:i:m:g:n:v:k:o:d:r:u:p:t:e:s:h\? OPT; do
        case $OPT in
            l) VM_INSTALL_ISO="$OPTARG" ;;
            b) VM_IP_BOOTPROTO="$OPTARG" ;;
            i) VM_IP_ADDR="$OPTARG" ;;
            m) VM_IP_NETMASK="$OPTARG" ;;
            g) VM_GATEWAY="$OPTARG" ;;
            n) VM_NAMESERVER="$OPTARG" ;;
            v) VM_NET_DEVIDE="$OPTARG" ;;
            k) VM_NET_IF="$OPTARG" ;;
            o) VM_HOSTNAME="$OPTARG" ;;
            d) VM_DISKSIZE_G="$OPTARG" ;;
            r) VM_RAMSIZE_M="$OPTARG" ;;
            u) VM_CPU_NUM="$OPTARG" ;;
            p) VM_NTP_SEVER="$OPTARG" ;;
            t) VM_TIMEZONE="$OPTARG" ;;
            e) VM_ENCRYPTED_ROOTPW="$OPTARG" ;;
            s) VM_ROOT_SSHKEY="$OPTARG" ;;
            h) install-almalinux-usage ;;
            \?) install-almalinux-usage ;;
        esac
    done

    shift $((OPTIND - 1))
    VM_NAME=$1

    if [ ${VM_IP_BOOTPROTO} = static ]; then
        NETWORK_CONFIG="network  --bootproto=${VM_IP_BOOTPROTO} --ip=${VM_IP_ADDR} --netmask= --gateway=${VM_GATEWAY} --nameserver=${VM_NAMESERVER} --device=${VM_NET_DEVIDE} --ipv6=auto --activate"
    else
        NETWORK_CONFIG="network --bootproto=dhcp"
    fi
    
    CONFIG_FILE=$(mktemp --suffix .cfg)
    cat <<EOF > "${CONFIG_FILE}"
#version=RHEL8
# Use graphical install
graphical

repo --name="AppStream" --baseurl=file:///run/install/sources/mount-0000-cdrom/AppStream

%packages
@^minimal-environment
@guest-agents
@standard
kexec-tools
zsh
vim
%end

# Keyboard layouts
keyboard --xlayouts='jp'
# System language
lang ja_JP.UTF-8

# Network information
firewall --enable --ssh
${NETWORK_CONFIG}
network  --hostname=${VM_HOSTNAME}

# Use CDROM installation media
cdrom

# Run the Setup Agent on first boot
firstboot --enable

ignoredisk --only-use=vda
# Partition clearing information
clearpart --none --initlabel
# Disk partitioning information
part /boot/efi --fstype="efi" --ondisk=vda --size=600 --fsoptions="umask=0077,shortname=winnt"
part /boot --fstype="xfs" --ondisk=vda --size=1024
part pv.103 --fstype="lvmpv" --ondisk=vda --grow --size=18854
volgroup almalinux --pesize=4096 pv.103
logvol swap --fstype="swap" --size=2047 --name=swap --vgname=almalinux
logvol / --fstype="xfs" --grow --size=1024 --name=root --vgname=almalinux

# System timezone
timezone ${VM_TIMEZONE} --isUtc --ntpservers=${VM_NTP_SEVER}

# Root password
rootpw --iscrypted ${VM_ENCRYPTED_ROOTPW}

%addon com_redhat_kdump --enable --reserve-mb='auto'

%end

%anaconda
pwpolicy root --minlen=6 --minquality=1 --notstrict --nochanges --notempty
pwpolicy user --minlen=6 --minquality=1 --notstrict --nochanges --emptyok
pwpolicy luks --minlen=6 --minquality=1 --notstrict --nochanges --notempty
%end

reboot

EOF

    echo CONFIG=${CONFIG_FILE}
    sudo virt-install --name ${VM_NAME} \
        --os-type linux \
        --os-variant centos8 \
        --location "${VM_INSTALL_ISO}" \
        --disk size=${VM_DISKSIZE_G}\
        --graphics spice \
        --vcpus=${VM_CPU_NUM} \
        --ram=${VM_RAMSIZE_M} \
        --initrd-inject "${CONFIG_FILE}" \
        --network "${VM_NET_IF}" \
        --extra-args "inst.ks=file://$(basename ${CONFIG_FILE})"

        #--noautoconsole \

    #echo CONFIG=${CONFIG_FILE}
    #cat ${CONFIG_FILE}
    rm ${CONFIG_FILE}
}

install-almalinux "$@"