409 lines
13 KiB
Bash
Executable File
409 lines
13 KiB
Bash
Executable File
#!/usr/bin/env bash
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if [[ $( whoami ) != "root" ]]; then
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echo "This script is designed to run as root within the installer only!"
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exit 1
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fi
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logfile="/tmp/pvc-install.log"
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debrelease="buster"
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debmirror="http://debian.mirror.rafal.ca/debian"
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debpkglist="lvm2,parted,gdisk,grub-pc,grub-efi-amd64,linux-image-amd64,sudo,vim,gpg,gpg-agent,aptitude,openssh-server,vlan,ifenslave,python,python2,python3,ca-certificates,ntp"
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clear
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echo "------------------------------------------------"
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echo "| Preparing to install a PVC node base system. |"
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echo "------------------------------------------------"
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echo
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echo "NOTE: If you make a mistake and need to restart the installer while answering"
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echo " the questions below, you may do so by typing ^C to cancel the script,"
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echo " then re-running it by calling /install.sh in the resulting shell."
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echo
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echo "1) Please enter a fully-qualified hostname for the system."
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while [[ -z ${target_hostname} ]]; do
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echo
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echo -n "> "
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read target_hostname
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if [[ -z ${target_hostname} ]]; then
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echo
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echo "Please enter a hostname."
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continue
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fi
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echo
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done
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disks="$(
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for disk in /dev/sd?; do
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disk_data="$( fdisk -l ${disk} 2>/dev/null )"
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echo -n "${disk}"
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echo -en "\t$( grep "^Disk model:" <<<"${disk_data}" | awk '{ $1=""; print $0 }' )"
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echo -en " $( grep "^Disk ${disk}:" <<<"${disk_data}" | awk '{ $1=""; $2="size:"; print $0 }' )"
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echo
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done
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)"
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echo "2) Please enter the disk to install the PVC base system to. This disk will be"
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echo "wiped, an LVM PV created on it, and the system installed to this LVM."
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echo "NOTE: PVC requires a disk of >16GB to be installed to. 32GB is the recommended minimum."
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echo
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echo "Available disks:"
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echo
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echo -e "$( sed 's/\(.*\)/ \1/' <<<"${disks[@]}" )"
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while [[ ! -b ${target_disk} ]]; do
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echo
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echo -n "> "
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read target_disk
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if [[ ! -b ${target_disk} ]]; then
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echo
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echo "Please enter a valid target disk."
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continue
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fi
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echo
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done
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for interface in $( ip address | grep '^[0-9]' | grep 'eno\|enp\|ens\|wlp' | awk '{ print $2 }' | tr -d ':' ); do
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ip link set ${interface} up
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done
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sleep 2
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interfaces="$(
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ip address | grep '^[0-9]' | grep 'eno\|enp\|ens\|wlp' | awk '{ print $2"\t"$3 }' | tr -d ':'
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)"
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echo "3a) Please enter the primary network interface for external connectivity. If"
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echo " no entries are shown here, ensure a cable is connected, then restart the"
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echo " installer."
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echo
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echo "Available interfaces:"
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echo
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echo -e "$( sed 's/\(.*\)/ \1/' <<<"${interfaces[@]}" )"
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while [[ -z ${target_interface} ]]; do
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echo
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echo -n "> "
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read target_interface
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if ! grep -qw "${target_interface}" <<<"${interfaces[@]}"; then
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echo
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echo "Please enter a valid interface."
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target_interface=""
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continue
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fi
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echo
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done
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echo "3b) Please enter the IP address, in CIDR format [X.X.X.X/YY], of the primary"
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echo "network interface. Leave blank for DHCP configuration of the interface on boot."
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echo
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echo -n "> "
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read target_ipaddr
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if [[ -n ${target_ipaddr} ]]; then
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target_netformat="static"
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echo
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echo "3c) Please enter the default gateway IP address of the primary"
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echo "network interface."
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while [[ -z ${target_defgw} ]]; do
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echo
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echo -n "> "
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read target_defgw
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if [[ -z ${target_defgw} ]]; then
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echo
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echo "Please enter a default gateway; the installer requires Internet access."
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continue
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fi
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echo
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done
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else
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target_netformat="dhcp"
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echo
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fi
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echo -n "Bringing up primary network interface in ${target_netformat} mode... "
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case ${target_netformat} in
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'static')
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ip link set ${target_interface} up >&2 || true
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ip address add ${target_ipaddr} dev ${target_interface} >&2 || true
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ip route add default via ${target_defgw} >&2 || true
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formatted_ipaddr="$( sipcalc ${target_ipaddr} | grep -v '(' | awk '/Host address/{ print $NF }' )"
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formatted_netmask="$( sipcalc ${target_ipaddr} | grep -v '(' | awk '/Network mask/{ print $NF }' )"
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target_interfaces_block="auto ${target_interface}\niface ${target_interface} inet ${target_netformat}\n\taddress ${formatted_ipaddr}\n\tnetmask ${formatted_netmask}\n\tgateway ${target_defgw}"
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cat <<EOF >/etc/resolv.conf
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nameserver 8.8.8.8
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EOF
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;;
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'dhcp')
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dhclient ${target_interface} >&2
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target_interfaces_block="auto ${target_interface}\niface ${target_interface} inet ${target_netformat}"
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;;
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esac
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echo "done."
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echo
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echo "4) Please enter an HTTP URL containing a text list of SSH authorized keys to"
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echo "fetch. These keys will be allowed access to the 'deploy' user via SSH."
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echo "Leave blank to bypass this and use a password instead."
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echo
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echo -n "> "
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read target_keys_url
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if [[ -z ${target_keys_url} ]]; then
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echo
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echo "No SSH keys URL specified. Falling back to password configuration."
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echo
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echo "5) Please enter a password (hidden), twice, for the 'deploy' user."
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while [[ -z "${target_password}" ]]; do
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echo
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echo -n "> "
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read -s target_password_1
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echo
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echo -n "> "
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read -s target_password_2
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echo
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if [[ -n "${target_password_1}" && "${target_password_1}" -eq "${target_password_2}" ]]; then
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target_password="${target_password_1}"
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else
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echo
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echo "The specified passwords do not match or are empty."
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fi
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done
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else
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while ! wget -O /dev/null ${target_keys_url} &>/dev/null; do
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echo
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echo "Please enter a valid SSH keys URL."
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echo
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echo -n "> "
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read target_keys_url
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done
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fi
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echo
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titlestring_text="| Proceeding with installation of host '${target_hostname}'. |"
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titlestring_len="$(( $( wc -c <<<"${titlestring_text}" ) - 2 ))"
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for i in $( seq 0 ${titlestring_len} ); do echo -n "-"; done; echo
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echo "${titlestring_text}"
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for i in $( seq 0 ${titlestring_len} ); do echo -n "-"; done; echo
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echo
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### Script begins ###
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echo "LOGFILE: ${logfile}"
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echo
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set -o errexit
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exec 1> >( tee -ia ${logfile} )
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exec 2> >( tee -ia ${logfile} >/dev/null )
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cleanup() {
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set +o errexit
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echo -n "Cleaning up... "
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umount ${target}/run >&2
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umount ${target}/sys >&2
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umount ${target}/proc >&2
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umount ${target}/dev/pts >&2
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umount ${target}/dev >&2
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umount ${target}/var/lib/ceph >&2
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umount ${target}/boot/efi >&2
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umount ${target}/boot >&2
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umount ${target} >&2
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vgchange -an >&2
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rmdir ${target} >&2
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echo "done."
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echo
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}
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trap cleanup EXIT
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echo -n "Determining block device and partition sizing... "
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blockdev_size="$(( $( blockdev --getsize64 ${target_disk} ) / 1024 / 1024 / 1024 - 1))"
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if [[ ${blockdev_size} -ge 58 ]]; then
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# Sufficiently large system disk (>=64GB), use large partitions
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size_root_lv="32"
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size_ceph_lv="4"
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size_swap_lv="16"
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echo "found large disk, using partition sizes 32/4/16."
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elif [[ ${blockdev_size} -ge 28 ]]; then
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# Relatively large disk (>=32GB), use small partitions
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size_root_lv="16"
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size_ceph_lv="2"
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size_swap_lv="8"
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echo "found medium disk, using partition sizes 16/2/8."
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elif [[ ${blockdev_size} -ge 13 ]]; then
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# Small disk (>=16GB), use very small partitions
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size_root_lv="8"
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size_ceph_lv="2"
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size_swap_lv="2"
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echo "found small disk, using partition sizes 8/2/2."
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else
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# Extremely small disk, (<16GB) - bail out, this is too small
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echo
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echo "FAILURE - The specified disk is too small (<16GB). PVC must be installed on a disk of >16GB."
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read
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exit 1
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fi
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echo -n "Disabing existing volume groups... "
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vgchange -an >&2 || true
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echo "done."
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echo -n "Zeroing block device '${target_disk}'... "
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dd if=/dev/zero of=${target_disk} bs=4M >&2 || true
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echo "done."
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echo -n "Preparing block device '${target_disk}'... "
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# New GPT, part 1 64MB ESP, part 2 960MB BOOT, part 3 inf LVM PV
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echo -e "o\ny\nn\n1\n\n64M\nEF00\nn\n2\n\n960M\n8300\nn\n3\n\n\n8E00\nw\ny\n" | gdisk ${target_disk} >&2
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echo "done."
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echo -n "Rescanning disks... "
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partprobe >&2 || true
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echo "done."
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echo -n "Creating LVM PV... "
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yes | pvcreate -ffy ${target_disk}3 >&2
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echo "done."
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echo -n "Creating LVM VG named 'vgx'... "
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yes | vgcreate vgx ${target_disk}3 >&2
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echo "done."
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echo -n "Creating root logical volume (${size_root_lv}GB)... "
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lvcreate -L ${size_root_lv}G -n root vgx >&2
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echo "done."
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echo -n "Creating filesystem on root logical volume (ext4)... "
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yes | mkfs.ext4 /dev/vgx/root >&2
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echo "done."
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echo -n "Creating ceph logical volume (${size_ceph_lv}GB)... "
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yes | lvcreate -L ${size_ceph_lv}G -n ceph vgx >&2
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echo "done."
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echo -n "Creating filesystem on ceph logical volume (ext4)... "
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mkfs.ext4 /dev/vgx/ceph >&2
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echo "done."
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echo -n "Creating swap logical volume (${size_swap_lv}GB)... "
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lvcreate -L ${size_swap_lv}G -n swap vgx >&2
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echo "done."
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echo -n "Creating swap space on swap logical volume... "
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yes | mkswap -f /dev/vgx/swap >&2
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echo "done."
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echo -n "Creating filesystem on boot partition (ext2)... "
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yes | mkfs.ext2 ${target_disk}2 >&2
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echo "done."
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echo -n "Creating filesystem on ESP partition (vfat)... "
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yes | mkdosfs -F32 ${target_disk}1 >&2
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echo "done."
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echo -n "Mounting disks on temporary target... "
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target=$( mktemp -d )
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mount /dev/vgx/root ${target} >&2
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mkdir -p ${target}/boot >&2
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mount ${target_disk}2 ${target}/boot >&2
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mkdir -p ${target}/boot/efi >&2
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mount ${target_disk}1 ${target}/boot/efi >&2
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mkdir -p ${target}/var/lib/ceph >&2
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mount /dev/vgx/ceph ${target}/var/lib/ceph >&2
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echo "done."
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echo -n "Running debootstrap install... "
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debootstrap --include=${debpkglist} ${debrelease} ${target}/ ${debmirror} >&2
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echo "done."
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# Determine the bypath name of the specified system disk
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for disk in /dev/disk/by-path/*; do
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bypathlink="$( readlink ${disk} | awk -F'/' '{ print $NF }' )"
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enteredname="$( awk -F'/' '{ print $NF }' <<<"${target_disk}" )"
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if [[ ${bypathlink} == ${enteredname} ]]; then
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bypath_disk="${disk}"
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fi
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done
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echo -n "Adding fstab entries... "
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echo "/dev/mapper/vgx-root / ext4 errors=remount-ro 0 1" | tee -a ${target}/etc/fstab >&2
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echo "/dev/mapper/vgx-ceph /var/lib/ceph ext4 errors=remount-ro 0 2" | tee -a ${target}/etc/fstab >&2
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echo "/dev/mapper/vgx-swap nonde swap sw 0 0" | tee -a ${target}/etc/fstab >&2
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echo "${bypath_disk}-part2 /boot ext2 defaults 0 2" | tee -a ${target}/etc/fstab >&2
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echo "${bypath_disk}-part1 /boot/efi vfat umask=0077 0 2" | tee -a ${target}/etc/fstab >&2
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echo "done."
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echo -n "Adding interface segment... "
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echo -e "${target_interfaces_block}" | tee -a ${target}/etc/network/interfaces >&2
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echo "done."
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echo -n "Adding 'deploy' user... "
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mv ${target}/home ${target}/var/home >&2
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chroot ${target} useradd -u 200 -d /var/home/deploy -m -s /bin/bash -g operator -G sudo deploy >&2
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chroot ${target} mkdir -p /var/home/deploy/.ssh
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if [[ -n ${target_keys_url} ]]; then
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wget -O ${target}/var/home/deploy/.ssh/authorized_keys ${target_keys_url}
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chroot ${target} chmod 0600 /var/home/deploy/.ssh/authorized_keys
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chroot ${target} chown -R deploy:operator /var/home/deploy
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else
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echo "${target_password}" | chroot ${target} passwd --stdin deploy >&2
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fi
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echo "done."
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echo -n "Setting NOPASSWD for sudo group... "
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sed -i 's/^%sudo\tALL=(ALL:ALL) ALL/%sudo\tALL=(ALL:ALL) NOPASSWD: ALL/' ${target}/etc/sudoers
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echo "done."
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echo -n "Setting /etc/issue generator... "
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mkdir -p ${target}/etc/network/if-up.d >&2
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echo -e "#!/bin/sh
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IP=\"\$( ip -4 addr show dev ${target_interface} | grep inet | awk '{ print \$2 }' | head -1 )\"
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cat <<EOF >/etc/issue
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Debian GNU/Linux 10 \\\\n \\\\l
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Primary interface IP address: \$IP
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EOF" | tee ${target}/etc/network/if-up.d/issue-gen >&2
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chmod +x ${target}/etc/network/if-up.d/issue-gen 1>&2
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echo "done."
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echo -n "Generating host rsa and ed25519 keys... "
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rm ${target}/etc/ssh/ssh_host_*_key* >&2
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chroot ${target} ssh-keygen -t rsa -N "" -f /etc/ssh/ssh_host_rsa_key >&2
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chroot ${target} ssh-keygen -t ed25519 -N "" -f /etc/ssh/ssh_host_ed25519_key >&2
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echo "done."
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echo -n "Setting hostname... "
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echo "${target_hostname}" | tee ${target}/etc/hostname >&2
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echo "done."
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echo -n "Setting resolv.conf... "
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echo "nameserver 8.8.8.8" | tee ${target}/etc/resolv.conf >&2
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echo "done."
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echo -n "Installing GRUB bootloader... "
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mount --bind /dev ${target}/dev >&2
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mount --bind /dev/pts ${target}/dev/pts >&2
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mount --bind /proc ${target}/proc >&2
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mount --bind /sys ${target}/sys >&2
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mount --bind /run ${target}/run >&2
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if [[ -d /sys/firmware/efi ]]; then
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bios_target="x86_64-efi"
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else
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bios_target="i386-pc"
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fi
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chroot ${target} grub-install --target=${bios_target} ${target_disk} >&2
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chroot ${target} grub-mkconfig -o /boot/grub/grub.cfg >&2
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echo "done."
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set +o errexit
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echo
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echo "Edit the /etc/network/interfaces file in the target before completing setup? [y/N]"
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read edit_ifaces
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if [[ ${edit_ifaces} == 'y' || ${edit_ifaces} == 'Y' ]]; then
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vim ${target}/etc/network/interfaces
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fi
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echo
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cleanup
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echo "-------------------------------------------------------------------------------------"
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echo "| PVC node installation finished. Next steps: |"
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echo "| 1. Press <enter> to reboot the system. |"
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echo "| 2. Boot the PVC base hypervisor and verify SSH access (IP shown on login screen). |"
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echo "| 3. Proceed with system deployment via PVC Ansible. |"
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echo "-------------------------------------------------------------------------------------"
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echo
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read
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reboot
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