commit ea4884c1b402bbbcd0b98ebcdfa916d0f0a0398b Author: Victor LABORIE Date: Thu Oct 26 17:14:07 2017 +0200 Initial commit diff --git a/add-vm.sh b/add-vm.sh new file mode 100644 index 0000000..ccad977 --- /dev/null +++ b/add-vm.sh @@ -0,0 +1,208 @@ +#!/bin/bash +# Add-VM script to add a VM on evoKVM. +# _ ____ ____ __ ____ __ +# / \ | _ \| _ \ \ \ / / \/ | +# / _ \ | | | | | | |____\ \ / /| |\/| | +# / ___ \| |_| | |_| |_____\ V / | | | | +# /_/ \_\____/|____/ \_/ |_| |_| +# +# Need packages: dialog +# Bash strict mode +set -euo pipefail + +dryRun() { + + if ($doDryRun); then + echo -e "\e[34mDoing:" $* "\e[39m" + else + echo -e "\e[34mDoing:" $* "\e[39m" + $* + fi +} + +critical() { + echo -ne "\e[31m${1}\e[39m\n" && exit 1 +} + +warn() { + + echo -ne "\e[33m${1}\e[39m\n" +} + +masterKVMIP="" +slaveKVMIP="" +[ -f "/etc/evolinux/add-vm.cnf" ] && . /etc/evolinux/add-vm.cnf +[ -z "$masterKVMIP" ] && critical "You must define masterKVMIP in /etc/evolinux/add-vm.cnf!!" +[ -z "$slaveKVMIP" ] && critical "You must define slaveKVMIP in /etc/evolinux/add-vm.cnf!!" + +export DIALOGOUT=$(mktemp --tmpdir=/tmp addvm.XXX) +# TODO: How to replace _ with a space?? +export DIALOG="$(which dialog) --backtitle Add-VM_Press_F1_for_help" +export DIALOGRC=.dialogrc +export HELPFILE=$(mktemp --tmpdir=/tmp addvm.XXX) +tmpResFile=$(mktemp --tmpdir=/tmp addvm.XXX) +xmlVM=$(mktemp --tmpdir=/tmp addvm.XXX) +masterKVM="$(hostname -s)" +slaveKVM="$(ssh $slaveKVMIP hostname -s)" +doDryRun=false + +# Exit & Cleanup function. +clean() { + + echo -e "\nBye! Cleaning..." + [ -f $DIALOGOUT ] && rm $DIALOGOUT + [ -f $HELPFILE ] && rm $HELPFILE +# [ -f $tmpResFile ] && rm $tmpResFile +# [ -f $xmlVM ] && rm $xmlVM + exit +} +trap clean EXIT SIGINT + +$DIALOG --hfile $HELPFILE --title "KVM Config" --form "Set the right config. "\ +"If you do not want a type of disk, type none." 0 0 0 \ + "vCPU" 1 1 "2" 1 10 20 0 \ + "memory" 2 1 "4G" 2 10 20 0 \ + "volroot" 3 1 "ssd-20G" 3 10 20 0 \ + "volhome" 4 1 "hdd-40G" 4 10 20 0 \ + "vmName" 5 1 "" 5 10 20 0 \ + 2>$DIALOGOUT +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' $DIALOGOUT) + +[ -z "$vmName" ] && critical "You need a VM Name!!" + +$DIALOG --title "Continue?" --clear "$@" \ + --yesno "Will create a VM named $vmName on $masterKVM with $vCPU vCPU, "\ +"$memory memory, $volroot for / (and /usr, ...) and $volhome for /home." 10 80 +if [[ $? -ne 0 ]]; then + exit 1 +fi + +if ! [[ "$volroot" =~ (ssd|hdd)-([0-9]+G) ]]; then + critical "No volume for root device (/dev/vda)?!!" +else + volrootDisk="${BASH_REMATCH[1]}" + volrootSize="${BASH_REMATCH[2]}" + dryRun lvcreate -L$volrootSize -n${vmName}_root $volrootDisk + dryRun ssh $slaveKVMIP lvcreate -L$volrootSize -n${vmName}_root $volrootDisk +fi + +if ! [[ "$volhome" =~ (ssd|hdd)-([0-9]+G) ]]; then + warn "No volume for home device (/dev/vdb)... Okay, not doing it!" + volhomeDisk="none" +else + volhomeDisk="${BASH_REMATCH[1]}" + volhomeSize="${BASH_REMATCH[2]}" + dryRun lvcreate -L$volhomeSize -n${vmName}_home $volhomeDisk + dryRun ssh $slaveKVMIP lvcreate -L$volhomeSize -n${vmName}_home $volhomeDisk +fi + +if [[ -f "/etc/drbd.d/${vmName}.res" ]]; then + warn "The DRBD resource file ${vmName}.res is already present! Continue? [y/N]" + read + if ! [[ "$REPLY" =~ (Y|y) ]]; then + exit 1 + fi +fi + +# Generates drbd resource file. + +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/://') + drbdPort=$((lastdrbdPort+1)) + lastMinor=$(grep -hEo 'minor [0-9]{1,}' /etc/drbd.d/*.res | sed 's/minor //' | sort -n | tail -1) + minorvol0=$((lastMinor+1)) + minorvol1=$((lastMinor+2)) +else + drbdPort=7900 + minorvol0=0 + minorvol1=1 +fi + +cat << EOT > $tmpResFile +resource "${vmName}" { + net { + cram-hmac-alg "sha1"; + shared-secret "$(apg -n 1 -m 16 -M lcN)"; + # Si pas de lien dedié 10G, passer en protocol A + # Et desactiver allow-two-primaries; + protocol C; + allow-two-primaries; + # Tuning perf. + max-buffers 8000; + max-epoch-size 8000; + sndbuf-size 0; + } + # A utiliser si RAID HW avec cache + batterie + disk { + disk-barrier no; + disk-flushes no; + } + volume 0 { + device minor ${minorvol0}; + disk /dev/${volrootDisk}/${vmName}_root; + meta-disk internal; + } +EOT +if [[ "$volhomeDisk" != "none" ]]; then + cat << EOT >> $tmpResFile + volume 1 { + device minor ${minorvol1}; + disk /dev/${volhomeDisk}/${vmName}_home; + meta-disk internal; + } +EOT +fi +cat << EOT >> $tmpResFile + on $masterKVM { + address ${masterKVMIP}:${drbdPort}; + } + on $slaveKVM { + address ${slaveKVMIP}:${drbdPort}; + } +} +EOT + +# Create/Activate the new drbd resources. +dryRun install -m 600 $tmpResFile /etc/drbd.d/${vmName}.res +dryRun scp /etc/drbd.d/${vmName}.res ${slaveKVMIP}:/etc/drbd.d/ +dryRun drbdadm create-md "$vmName" +dryRun ssh $slaveKVMIP drbdadm create-md "$vmName" +($doDryRun) && drbdadm -d adjust "$vmName" +($doDryRun) || drbdadm adjust "$vmName" +($doDryRun) && ssh $slaveKVMIP drbdadm -d adjust "$vmName" +($doDryRun) || ssh $slaveKVMIP drbdadm adjust "$vmName" +dryRun drbdadm -- --overwrite-data-of-peer primary "$vmName" +sleep 5 && drbd-overview | tail -4 + +drbdDiskPath="/dev/drbd/by-res/${vmName}/0" +if ! [[ -b "$drbdDiskPath" ]]; then + warn "$drbdDiskPath not found! Continue? [y/N]" + read + if ! [[ "$REPLY" =~ (Y|y) ]]; then + exit 1 + fi +fi + +virtHome="" +[ "$volhomeDisk" != "none" ] && virtHome="--disk path=/dev/drbd/by-disk/${volhomeDisk}/${vmName}_home,bus=virtio,io=threads,cache=none,format=raw" + +dryRun virt-install --connect=qemu:///system \ + --name=${vmName} \ + --cpu mode=host-passthrough --vcpus=${vCPU} \ + --memory=${memory} \ + --disk path=/dev/drbd/by-disk/${volrootDisk}/${vmName}_root,bus=virtio,io=threads,cache=none,format=raw \ + $virtHome \ + --network=bridge:br0,model=virtio \ + --noautoconsole --graphics vnc,listen=127.0.0.1,keymap=fr \ + --rng /dev/random \ + --os-variant=none \ + --pxe + +[ -x /usr/share/scripts/evomaintenance.sh ] && 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"