274 lines
7.6 KiB
Bash
Executable File
274 lines
7.6 KiB
Bash
Executable File
#!/bin/bash
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# Add-VM script to add a VM on evoKVM.
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# _ ____ ____ __ ____ __
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# / \ | _ \| _ \ \ \ / / \/ |
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# / _ \ | | | | | | |____\ \ / /| |\/| |
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# / ___ \| |_| | |_| |_____\ V / | | | |
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# /_/ \_\____/|____/ \_/ |_| |_|
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#
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# Need packages: dialog
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# Bash strict mode
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set -euo pipefail
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VERSION="21.10"
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isDryRun() {
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test "${doDryRun}" = "true"
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}
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dryRun() {
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if isDryRun; then
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echo -e "\e[34mDoing:" "$*" "\e[39m"
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else
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echo -e "\e[34mDoing:" "$*" "\e[39m"
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$*
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fi
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}
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critical() {
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echo -ne "\e[31m${1}\e[39m\n" && exit 1
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}
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warn() {
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echo -ne "\e[33m${1}\e[39m\n"
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}
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# shellcheck disable=SC1091
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[ -f "/etc/evolinux/add-vm.cnf" ] && . /etc/evolinux/add-vm.cnf
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masterKVMIP="${masterKVMIP:-127.0.0.1}"
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slaveKVMIP="${slaveKVMIP:-}"
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disks="${disks:-}"
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[ -n "${disks}" ] || disks=("ssd" "hdd")
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bridgeName="${bridgeName:-br0}"
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doDryRun=${doDryRun:-false}
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isoImagePath="${isoImagePath:-}"
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debianVersion="${debianAuto:-stable}"
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preseedURL="${preseedURL:-}"
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defaultVCPU="${defaultVCPU:-"2"}"
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defaultRAM="${defaultRAM:-"4G"}"
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defaultRootSize="${defaultRootSize:-"20G"}"
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defaultHomeSize="${defaultHomeSize:-"40G"}"
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DIALOGOUT=$(mktemp --tmpdir=/tmp addvm.XXX)
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export DIALOGOUT
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# TODO: How to replace _ with a space??
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DIALOG="$(command -v dialog) --backtitle Add-VM_Press_F1_for_help"
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export DIALOG
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DIALOGRC=.dialogrc
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export DIALOGRC
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HELPFILE=$(mktemp --tmpdir=/tmp addvm.XXX)
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export HELPFILE
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tmpResFile=$(mktemp --tmpdir=/tmp addvm.XXX)
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masterKVM="$(hostname -s)"
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slaveKVM="$(ssh "${slaveKVMIP}" hostname -s)"
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# Exit & Cleanup function.
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clean() {
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echo -e "\nBye! Cleaning..."
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rm -f "${DIALOGOUT}"
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rm -f "${HELPFILE}"
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exit
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}
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trap clean EXIT SIGINT
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${DIALOG} \
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--hfile "${HELPFILE}" \
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--title "KVM Config" \
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--form "Set the right config. If you do not want a type of disk, type none." 0 0 0 \
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"vCPU" 1 1 "${defaultVCPU}" 1 10 20 0 \
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"memory" 2 1 "${defaultRAM}" 2 10 20 0 \
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"volRoot" 3 1 "${disks[0]}-${defaultRootSize}" 3 10 20 0 \
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"volHome" 4 1 "${disks[1]}-${defaultHomeSize}" 4 10 20 0 \
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"vmName" 5 1 "" 5 10 20 0 \
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2> "${DIALOGOUT}"
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vCPU=$(sed 1'q;d' "${DIALOGOUT}")
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memory=$(sed 2'q;d' "${DIALOGOUT}" | tr -d 'G')
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memory=$((memory * 1024 ))
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volRoot=$(sed 3'q;d' "${DIALOGOUT}")
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volHome=$(sed 4'q;d' "${DIALOGOUT}")
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vmName=$(sed 5'q;d' "${DIALOGOUT}")
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if [ -z "${vmName}" ]; then
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critical "You need a VM Name!!"
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fi
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${DIALOG} \
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--title "Continue?" \
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--clear "$@" \
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--yesno "Will create a VM named ${vmName} on ${masterKVM} with ${vCPU} vCPU, ${memory} memory, ${volRoot} for / (and /usr, ...) and ${volHome} for /home." 10 80
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dialog_rc=$?
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if [[ ${dialog_rc} -ne 0 ]]; then
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exit 1
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fi
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if ! [[ "${volRoot}" =~ ([^-]+)-([0-9]+G) ]]; then
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critical "No volume for root device (/dev/vda)?!!"
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else
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volRootDisk="${BASH_REMATCH[1]}"
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volRootSize="${BASH_REMATCH[2]}"
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if [[ " ${disks[*]} " != *"${volRootDisk}"* ]]; then
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critical "Unknow disk ${volRootDisk} !"
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fi
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dryRun lvcreate -L"${volRootSize}" -n"${vmName}_root" "${volRootDisk}"
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dryRun ssh "${slaveKVMIP}" "lvcreate -L$volRootSize -n${vmName}_root ${volRootDisk}"
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fi
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if ! [[ "${volHome}" =~ ([^-]+)-([0-9]+G) ]]; then
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warn "No volume for home device (/dev/vdb)... Okay, not doing it!"
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volHomeDisk="none"
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else
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volHomeDisk="${BASH_REMATCH[1]}"
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volHomeSize="${BASH_REMATCH[2]}"
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if [[ " ${disks[*]} " != *"${volHomeDisk}"* ]]; then
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critical "Unknow disk ${volHomeDisk} !"
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fi
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dryRun lvcreate -L"${volHomeSize}" -n"${vmName}_home" "${volHomeDisk}"
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dryRun ssh "${slaveKVMIP}" "lvcreate -L$volHomeSize -n${vmName}_home ${volHomeDisk}"
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fi
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if [ -f "/etc/drbd.d/${vmName}.res" ]; then
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warn "The DRBD resource file ${vmName}.res is already present! Continue? [y/N]"
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read -r
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if ! [[ "${REPLY}" =~ (Y|y) ]]; then
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exit 1
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fi
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fi
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# Generates drbd resource file.
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# shellcheck disable=SC2012
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if [ "$(ls /etc/drbd.d/ | wc -l)" -gt 1 ]; then
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lastdrbdPort=$(grep -hEo ':[0-9]{4}' /etc/drbd.d/*.res | sort | uniq | tail -1 | sed 's/://')
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drbdPort=$((lastdrbdPort+1))
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lastMinor=$(grep -hEo 'minor [0-9]{1,}' /etc/drbd.d/*.res | sed 's/minor //' | sort -n | tail -1)
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minorvol0=$((lastMinor+1))
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minorvol1=$((lastMinor+2))
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else
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drbdPort=7900
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minorvol0=0
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minorvol1=1
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fi
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cat << EOT > "${tmpResFile}"
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resource "${vmName}" {
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net {
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cram-hmac-alg "sha1";
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shared-secret "$(apg -n 1 -m 16 -M lcN)";
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# Si pas de lien dedié 10G, passer en protocol A
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# Et desactiver allow-two-primaries;
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protocol C;
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allow-two-primaries;
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# Tuning perf.
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max-buffers 8000;
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max-epoch-size 8000;
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sndbuf-size 0;
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}
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# A utiliser si RAID HW avec cache + batterie
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disk {
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disk-barrier no;
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disk-flushes no;
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}
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volume 0 {
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device minor ${minorvol0};
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disk /dev/${volRootDisk}/${vmName}_root;
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meta-disk internal;
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}
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EOT
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if [[ "${volHomeDisk}" != "none" ]]; then
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cat << EOT >> "${tmpResFile}"
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volume 1 {
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device minor ${minorvol1};
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disk /dev/${volHomeDisk}/${vmName}_home;
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meta-disk internal;
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}
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EOT
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fi
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cat << EOT >> "${tmpResFile}"
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on ${masterKVM} {
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address ${masterKVMIP}:${drbdPort};
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}
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on ${slaveKVM} {
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address ${slaveKVMIP}:${drbdPort};
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}
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}
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EOT
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# Create/Activate the new drbd resources.
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drbdadm="$(command -v drbdadm)"
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if isDryRun; then
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drbdadm="${drbdadm} --dry-run"
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fi
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if isDryRun; then
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# shellcheck disable=SC2064
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trap "rm /etc/drbd.d/${vmName}.res && ssh ${slaveKVMIP} rm /etc/drbd.d/${vmName}.res" 0
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fi
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install -m 600 "${tmpResFile}" "/etc/drbd.d/${vmName}.res"
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scp "/etc/drbd.d/${vmName}.res" "${slaveKVMIP}:/etc/drbd.d/"
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${drbdadm} create-md "${vmName}"
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# shellcheck disable=SC2029
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ssh "${slaveKVMIP}" "${drbdadm} create-md ${vmName}"
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${drbdadm} adjust "${vmName}"
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# shellcheck disable=SC2029
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ssh "${slaveKVMIP}" "${drbdadm} adjust ${vmName}"
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${drbdadm} -- --overwrite-data-of-peer primary "${vmName}"
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if ! isDryRun; then
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sleep 5
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drbd-overview | tail -4
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drbdDiskPath="/dev/drbd/by-res/${vmName}/0"
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if ! [ -b "${drbdDiskPath}" ]; then
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warn "${drbdDiskPath} not found! Continue? [y/N]"
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read -r
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if ! [[ "${REPLY}" =~ (Y|y) ]]; then
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exit 1
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fi
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fi
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fi
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virtRootDisk="--disk path=/dev/drbd/by-disk/${volRootDisk}/${vmName}_root,bus=virtio,io=threads,cache=none,format=raw"
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virtHomeDisk=""
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if [ "${volHomeDisk}" != "none" ]; then
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virtHomeDisk="--disk path=/dev/drbd/by-disk/${volHomeDisk}/${vmName}_home,bus=virtio,io=threads,cache=none,format=raw"
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fi
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if [ -n "${preseedURL}" ]; then
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bootMode="--location https://deb.debian.org/debian/dists/${debianVersion}/main/installer-amd64/ --extra-args auto=true priority=critical url=${preseedURL} hostname=${vmName}"
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fi
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if [ -f "${isoImagePath}" ]; then
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bootMode="--cdrom=${isoImagePath}"
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fi
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bootMode=${bootMode:-"--pxe"}
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dryRun virt-install \
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--connect=qemu:///system \
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--name="${vmName}" \
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--cpu "mode=host-passthrough" \
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--vcpus="${vCPU}" \
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--memory="${memory}" \
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"${virtRootDisk}" \
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"${virtHomeDisk}" \
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"${bootMode}" \
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--network="bridge:${bridgeName},model=virtio" \
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--noautoconsole \
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--graphics "vnc,listen=127.0.0.1,keymap=fr" \
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--rng /dev/random \
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--os-variant=none
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virt_install_rc=$?
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if [ "${virt_install_rc}" = "0" ]; then
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echo -e "\e[32mDone! Now you can install your VM with virt-manager.\e[39m"
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else
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echo -e "\e[31mError! VM couldn't be created.\e[39m"
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fi
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if ! isDryRun && [ -x /usr/share/scripts/evomaintenance.sh ]; then
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echo "Install VM ${vmName} (add-vm.sh)" | /usr/share/scripts/evomaintenance.sh
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fi
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