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kvm-host: add-vm: shellcheck (quotes, braces…)
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Jérémy Lecour 2021-06-10 21:22:38 +02:00 committed by Jérémy Lecour
parent edfcbbad0a
commit 9d0bfec87e
1 changed files with 130 additions and 87 deletions
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217
kvm-host/files/add-vm.sh
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@ -10,9 +10,13 @@
# Bash strict mode # Bash strict mode
set -euo pipefail set -euo pipefail
isDryRun() {
test "${doDryRun}" = "true"
}
dryRun() { dryRun() {
if ($doDryRun); then if isDryRun; then
echo -e "\e[34mDoing:" "$*" "\e[39m" echo -e "\e[34mDoing:" "$*" "\e[39m"
else else
echo -e "\e[34mDoing:" "$*" "\e[39m" echo -e "\e[34mDoing:" "$*" "\e[39m"
@ -29,6 +33,7 @@ warn() {
echo -ne "\e[33m${1}\e[39m\n" echo -ne "\e[33m${1}\e[39m\n"
} }
# shellcheck disable=SC1091
[ -f "/etc/evolinux/add-vm.cnf" ] && . /etc/evolinux/add-vm.cnf [ -f "/etc/evolinux/add-vm.cnf" ] && . /etc/evolinux/add-vm.cnf
masterKVMIP="${masterKVMIP:-127.0.0.1}" masterKVMIP="${masterKVMIP:-127.0.0.1}"
slaveKVMIP="${slaveKVMIP:-}" slaveKVMIP="${slaveKVMIP:-}"
@ -39,89 +44,102 @@ doDryRun=${doDryRun:-false}
isoImagePath="${isoImagePath:-}" isoImagePath="${isoImagePath:-}"
debianVersion="${debianAuto:-stable}" debianVersion="${debianAuto:-stable}"
preseedURL="${preseedURL:-}" preseedURL="${preseedURL:-}"
defaultVCPU="${defaultVCPU:-"2"}"
defaultRAM="${defaultRAM:-"4G"}"
defaultRootSize="${defaultRootSize:-"20G"}"
defaultHomeSize="${defaultHomeSize:-"40G"}"
DIALOGOUT=$(mktemp --tmpdir=/tmp addvm.XXX) DIALOGOUT=$(mktemp --tmpdir=/tmp addvm.XXX)
export DIALOGOUT export DIALOGOUT
# TODO: How to replace _ with a space?? # TODO: How to replace _ with a space??
DIALOG="$(which dialog) --backtitle Add-VM_Press_F1_for_help" DIALOG="$(command -v dialog) --backtitle Add-VM_Press_F1_for_help"
export DIALOG export DIALOG
DIALOGRC=.dialogrc DIALOGRC=.dialogrc
export DIALOGRC export DIALOGRC
HELPFILE=$(mktemp --tmpdir=/tmp addvm.XXX) HELPFILE=$(mktemp --tmpdir=/tmp addvm.XXX)
export HELPFILE export HELPFILE
tmpResFile=$(mktemp --tmpdir=/tmp addvm.XXX) tmpResFile=$(mktemp --tmpdir=/tmp addvm.XXX)
xmlVM=$(mktemp --tmpdir=/tmp addvm.XXX)
masterKVM="$(hostname -s)" masterKVM="$(hostname -s)"
slaveKVM="$(ssh $slaveKVMIP hostname -s)" slaveKVM="$(ssh "${slaveKVMIP}" hostname -s)"
# Exit & Cleanup function. # Exit & Cleanup function.
clean() { clean() {
echo -e "\nBye! Cleaning..." echo -e "\nBye! Cleaning..."
[ -f $DIALOGOUT ] && rm $DIALOGOUT rm -f "${DIALOGOUT}"
[ -f $HELPFILE ] && rm $HELPFILE rm -f "${HELPFILE}"
# [ -f $tmpResFile ] && rm $tmpResFile
# [ -f $xmlVM ] && rm $xmlVM
exit exit
} }
trap clean EXIT SIGINT trap clean EXIT SIGINT
$DIALOG --hfile $HELPFILE --title "KVM Config" --form "Set the right config. "\ ${DIALOG} \
"If you do not want a type of disk, type none." 0 0 0 \ --hfile "${HELPFILE}" \
"vCPU" 1 1 "2" 1 10 20 0 \ --title "KVM Config" \
"memory" 2 1 "4G" 2 10 20 0 \ --form "Set the right config. If you do not want a type of disk, type none." 0 0 0 \
"volroot" 3 1 "${disks[0]}-20G" 3 10 20 0 \ "vCPU" 1 1 "${defaultVCPU}" 1 10 20 0 \
"volhome" 4 1 "${disks[1]}-40G" 4 10 20 0 \ "memory" 2 1 "${defaultRAM}" 2 10 20 0 \
"vmName" 5 1 "" 5 10 20 0 \ "volRoot" 3 1 "${disks[0]}-${defaultRootSize}" 3 10 20 0 \
2>$DIALOGOUT "volHome" 4 1 "${disks[1]}-${defaultHomeSize}" 4 10 20 0 \
vCPU=$(sed 1'q;d' $DIALOGOUT) "vmName" 5 1 "" 5 10 20 0 \
memory=$(sed 2'q;d' $DIALOGOUT|tr -d 'G') 2> "${DIALOGOUT}"
memory=$(($memory * 1024))
volroot=$(sed 3'q;d' $DIALOGOUT)
volhome=$(sed 4'q;d' $DIALOGOUT)
vmName=$(sed 5'q;d' $DIALOGOUT)
[ -z "$vmName" ] && critical "You need a VM Name!!" vCPU=$(sed 1'q;d' "${DIALOGOUT}")
memory=$(sed 2'q;d' "${DIALOGOUT}" | tr -d 'G')
memory=$((memory * 1024 ))
volRoot=$(sed 3'q;d' "${DIALOGOUT}")
volHome=$(sed 4'q;d' "${DIALOGOUT}")
vmName=$(sed 5'q;d' "${DIALOGOUT}")
$DIALOG --title "Continue?" --clear "$@" \ if [ -z "${vmName}" ]; then
--yesno "Will create a VM named $vmName on $masterKVM with $vCPU vCPU, "\ critical "You need a VM Name!!"
"$memory memory, $volroot for / (and /usr, ...) and $volhome for /home." 10 80 fi
if [[ $? -ne 0 ]]; then
${DIALOG} \
--title "Continue?" \
--clear "$@" \
--yesno "Will create a VM named ${vmName} on ${masterKVM} with ${vCPU} vCPU, ${memory} memory, ${volRoot} for / (and /usr, ...) and ${volHome} for /home." 10 80
dialog_rc=$?
if [[ ${dialog_rc} -ne 0 ]]; then
exit 1 exit 1
fi fi
if ! [[ "$volroot" =~ ([^-]+)-([0-9]+G) ]]; then if ! [[ "${volRoot}" =~ ([^-]+)-([0-9]+G) ]]; then
critical "No volume for root device (/dev/vda)?!!" critical "No volume for root device (/dev/vda)?!!"
else else
volrootDisk="${BASH_REMATCH[1]}" volRootDisk="${BASH_REMATCH[1]}"
volrootSize="${BASH_REMATCH[2]}" volRootSize="${BASH_REMATCH[2]}"
[[ " ${disks[*]} " == *"$volrootDisk"* ]] || critical "Unknow disk $volrootDisk !" if [[ " ${disks[*]} " != *"${volRootDisk}"* ]]; then
dryRun lvcreate -L$volrootSize -n${vmName}_root $volrootDisk critical "Unknow disk ${volRootDisk} !"
dryRun ssh $slaveKVMIP lvcreate -L$volrootSize -n${vmName}_root $volrootDisk fi
dryRun lvcreate -L"${volRootSize}" -n"${vmName}_root" "${volRootDisk}"
dryRun ssh "${slaveKVMIP}" "lvcreate -L$volRootSize -n${vmName}_root ${volRootDisk}"
fi fi
if ! [[ "$volhome" =~ ([^-]+)-([0-9]+G) ]]; then if ! [[ "${volHome}" =~ ([^-]+)-([0-9]+G) ]]; then
warn "No volume for home device (/dev/vdb)... Okay, not doing it!" warn "No volume for home device (/dev/vdb)... Okay, not doing it!"
volhomeDisk="none" volHomeDisk="none"
else else
volhomeDisk="${BASH_REMATCH[1]}" volHomeDisk="${BASH_REMATCH[1]}"
volhomeSize="${BASH_REMATCH[2]}" volHomeSize="${BASH_REMATCH[2]}"
[[ " ${disks[*]} " == *"$volhomeDisk"* ]] || critical "Unknow disk $volhomeDisk !" if [[ " ${disks[*]} " != *"${volHomeDisk}"* ]]; then
dryRun lvcreate -L$volhomeSize -n${vmName}_home $volhomeDisk critical "Unknow disk ${volHomeDisk} !"
dryRun ssh $slaveKVMIP lvcreate -L$volhomeSize -n${vmName}_home $volhomeDisk fi
dryRun lvcreate -L"${volHomeSize}" -n"${vmName}_home" "${volHomeDisk}"
dryRun ssh "${slaveKVMIP}" "lvcreate -L$volHomeSize -n${vmName}_home ${volHomeDisk}"
fi fi
if [[ -f "/etc/drbd.d/${vmName}.res" ]]; then if [ -f "/etc/drbd.d/${vmName}.res" ]; then
warn "The DRBD resource file ${vmName}.res is already present! Continue? [y/N]" warn "The DRBD resource file ${vmName}.res is already present! Continue? [y/N]"
read read -r
if ! [[ "$REPLY" =~ (Y|y) ]]; then if ! [[ "${REPLY}" =~ (Y|y) ]]; then
exit 1 exit 1
fi fi
fi fi
# Generates drbd resource file. # Generates drbd resource file.
if [ $(ls /etc/drbd.d/|wc -l) -gt 1 ]; then # shellcheck disable=SC2012
if [ "$(ls /etc/drbd.d/ | wc -l)" -gt 1 ]; then
lastdrbdPort=$(grep -hEo ':[0-9]{4}' /etc/drbd.d/*.res | sort | uniq | tail -1 | sed 's/://') lastdrbdPort=$(grep -hEo ':[0-9]{4}' /etc/drbd.d/*.res | sort | uniq | tail -1 | sed 's/://')
drbdPort=$((lastdrbdPort+1)) drbdPort=$((lastdrbdPort+1))
lastMinor=$(grep -hEo 'minor [0-9]{1,}' /etc/drbd.d/*.res | sed 's/minor //' | sort -n | tail -1) lastMinor=$(grep -hEo 'minor [0-9]{1,}' /etc/drbd.d/*.res | sed 's/minor //' | sort -n | tail -1)
@ -133,7 +151,7 @@ else
minorvol1=1 minorvol1=1
fi fi
cat << EOT > $tmpResFile cat << EOT > "${tmpResFile}"
resource "${vmName}" { resource "${vmName}" {
net { net {
cram-hmac-alg "sha1"; cram-hmac-alg "sha1";
@ -154,24 +172,24 @@ resource "${vmName}" {
} }
volume 0 { volume 0 {
device minor ${minorvol0}; device minor ${minorvol0};
disk /dev/${volrootDisk}/${vmName}_root; disk /dev/${volRootDisk}/${vmName}_root;
meta-disk internal; meta-disk internal;
} }
EOT EOT
if [[ "$volhomeDisk" != "none" ]]; then if [[ "${volHomeDisk}" != "none" ]]; then
cat << EOT >> $tmpResFile cat << EOT >> "${tmpResFile}"
volume 1 { volume 1 {
device minor ${minorvol1}; device minor ${minorvol1};
disk /dev/${volhomeDisk}/${vmName}_home; disk /dev/${volHomeDisk}/${vmName}_home;
meta-disk internal; meta-disk internal;
} }
EOT EOT
fi fi
cat << EOT >> $tmpResFile cat << EOT >> "${tmpResFile}"
on $masterKVM { on ${masterKVM} {
address ${masterKVMIP}:${drbdPort}; address ${masterKVMIP}:${drbdPort};
} }
on $slaveKVM { on ${slaveKVM} {
address ${slaveKVMIP}:${drbdPort}; address ${slaveKVMIP}:${drbdPort};
} }
} }
@ -179,50 +197,75 @@ EOT
# Create/Activate the new drbd resources. # Create/Activate the new drbd resources.
drbdadm="$(command -v drbdadm)" drbdadm="$(command -v drbdadm)"
($doDryRun) && drbdadm="${drbdadm} --dry-run" if isDryRun; then
drbdadm="${drbdadm} --dry-run"
fi
($doDryRun) && trap "rm /etc/drbd.d/${vmName}.res && ssh ${slaveKVMIP} rm /etc/drbd.d/${vmName}.res" 0 if isDryRun; then
install -m 600 $tmpResFile /etc/drbd.d/${vmName}.res # shellcheck disable=SC2064
scp /etc/drbd.d/${vmName}.res ${slaveKVMIP}:/etc/drbd.d/ trap "rm /etc/drbd.d/${vmName}.res && ssh ${slaveKVMIP} rm /etc/drbd.d/${vmName}.res" 0
${drbdadm} create-md "$vmName" fi
ssh $slaveKVMIP ${drbdadm} create-md "$vmName" install -m 600 "${tmpResFile}" "/etc/drbd.d/${vmName}.res"
${drbdadm} adjust "$vmName" scp "/etc/drbd.d/${vmName}.res" "${slaveKVMIP}:/etc/drbd.d/"
ssh $slaveKVMIP ${drbdadm} adjust "$vmName" ${drbdadm} create-md "${vmName}"
${drbdadm} -- --overwrite-data-of-peer primary "$vmName" # shellcheck disable=SC2029
ssh "${slaveKVMIP}" "${drbdadm} create-md ${vmName}"
${drbdadm} adjust "${vmName}"
# shellcheck disable=SC2029
ssh "${slaveKVMIP}" "${drbdadm} adjust ${vmName}"
${drbdadm} -- --overwrite-data-of-peer primary "${vmName}"
if ! ($doDryRun); then if ! isDryRun; then
sleep 5 && drbd-overview | tail -4 sleep 5
drbd-overview | tail -4
drbdDiskPath="/dev/drbd/by-res/${vmName}/0" drbdDiskPath="/dev/drbd/by-res/${vmName}/0"
if ! [[ -b "$drbdDiskPath" ]]; then if ! [ -b "${drbdDiskPath}" ]; then
warn "$drbdDiskPath not found! Continue? [y/N]" warn "${drbdDiskPath} not found! Continue? [y/N]"
read read -r
if ! [[ "$REPLY" =~ (Y|y) ]]; then if ! [[ "${REPLY}" =~ (Y|y) ]]; then
exit 1 exit 1
fi fi
fi fi
fi fi
virtHome="" virtRootDisk="--disk path=/dev/drbd/by-disk/${volRootDisk}/${vmName}_root,bus=virtio,io=threads,cache=none,format=raw"
[ "$volhomeDisk" != "none" ] && virtHome="--disk path=/dev/drbd/by-disk/${volhomeDisk}/${vmName}_home,bus=virtio,io=threads,cache=none,format=raw" virtHomeDisk=""
bootMode="--pxe" if [ "${volHomeDisk}" != "none" ]; then
[ -n "${preseedURL}" ] && bootMode="--location https://deb.debian.org/debian/dists/${debianVersion}/main/installer-amd64/ --extra-args \"auto=true priority=critical url=${preseedURL} hostname=${vmName}\"" virtHomeDisk="--disk path=/dev/drbd/by-disk/${volHomeDisk}/${vmName}_home,bus=virtio,io=threads,cache=none,format=raw"
[ -f "$isoImagePath" ] && bootMode="--cdrom=$isoImagePath" fi
if [ -n "${preseedURL}" ]; then
bootMode="--location https://deb.debian.org/debian/dists/${debianVersion}/main/installer-amd64/ --extra-args auto=true priority=critical url=${preseedURL} hostname=${vmName}"
fi
if [ -f "${isoImagePath}" ]; then
bootMode="--cdrom=${isoImagePath}"
fi
bootMode=${bootMode:-"--pxe"}
dryRun virt-install --connect=qemu:///system \ dryRun virt-install \
--name=${vmName} \ --connect=qemu:///system \
--cpu mode=host-passthrough --vcpus=${vCPU} \ --name="${vmName}" \
--memory=${memory} \ --cpu "mode=host-passthrough" \
--disk path=/dev/drbd/by-disk/${volrootDisk}/${vmName}_root,bus=virtio,io=threads,cache=none,format=raw \ --vcpus="${vCPU}" \
$virtHome \ --memory="${memory}" \
$bootMode \ "${virtRootDisk}" \
--network=bridge:${bridgeName},model=virtio \ "${virtHomeDisk}" \
--noautoconsole --graphics vnc,listen=127.0.0.1,keymap=fr \ "${bootMode}" \
--rng /dev/random \ --network="bridge:${bridgeName},model=virtio" \
--os-variant=none --noautoconsole \
--graphics "vnc,listen=127.0.0.1,keymap=fr" \
--rng /dev/random \
--os-variant=none
virst_install_rc=$?
if [ -x /usr/share/scripts/evomaintenance.sh ]; then if [ "${virt_install_rc}" = "0" ]; then
($doDryRun) || echo "Install VM ${vmName} (add-vm.sh)" | /usr/share/scripts/evomaintenance.sh echo -e "\e[32mDone! Now you can install your VM with virt-manager.\e[39m"
else
echo -e "\e[31mError! VM couldn't be created.\e[39m"
fi fi
echo -e "\e[32mDone! Now you can install your VM with virt-manager.\e[39m" if ! isDryRun && [ -x /usr/share/scripts/evomaintenance.sh ]; then
echo "Install VM ${vmName} (add-vm.sh)" | /usr/share/scripts/evomaintenance.sh
fi