kvm-host: replace the "kvm-tools" package with scripts deployed by Ansible
continuous-integration/drone/push Build is passing
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continuous-integration/drone/push Build is passing
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parent
e75eeb8c3f
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3d715bae35
@ -1,3 +1,4 @@
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---
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kvm_custom_libvirt_images_path: ''
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kvm_install_drbd: True
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kvm_scripts_dir: /usr/local/sbin
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@ -0,0 +1,221 @@
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#!/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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dryRun() {
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if ($doDryRun); 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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[ -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="${isoImagePath:-}"
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export DIALOGOUT=$(mktemp --tmpdir=/tmp addvm.XXX)
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# TODO: How to replace _ with a space??
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export DIALOG="$(which dialog) --backtitle Add-VM_Press_F1_for_help"
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export DIALOGRC=.dialogrc
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export HELPFILE=$(mktemp --tmpdir=/tmp addvm.XXX)
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tmpResFile=$(mktemp --tmpdir=/tmp addvm.XXX)
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xmlVM=$(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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[ -f $DIALOGOUT ] && rm $DIALOGOUT
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[ -f $HELPFILE ] && rm $HELPFILE
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# [ -f $tmpResFile ] && rm $tmpResFile
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# [ -f $xmlVM ] && rm $xmlVM
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exit
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}
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trap clean EXIT SIGINT
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$DIALOG --hfile $HELPFILE --title "KVM Config" --form "Set the right config. "\
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"If you do not want a type of disk, type none." 0 0 0 \
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"vCPU" 1 1 "2" 1 10 20 0 \
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"memory" 2 1 "4G" 2 10 20 0 \
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"volroot" 3 1 "${disks[0]}-20G" 3 10 20 0 \
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"volhome" 4 1 "${disks[1]}-40G" 4 10 20 0 \
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"vmName" 5 1 "" 5 10 20 0 \
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2>$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' $DIALOGOUT)
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[ -z "$vmName" ] && critical "You need a VM Name!!"
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$DIALOG --title "Continue?" --clear "$@" \
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--yesno "Will create a VM named $vmName on $masterKVM with $vCPU vCPU, "\
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"$memory memory, $volroot for / (and /usr, ...) and $volhome for /home." 10 80
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if [[ $? -ne 0 ]]; then
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exit 1
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fi
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if ! [[ "$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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[[ " ${disks[*]} " == *"$volrootDisk"* ]] || critical "Unknow disk $volrootDisk !"
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dryRun lvcreate -L$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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[[ " ${disks[*]} " == *"$volhomeDisk"* ]] || critical "Unknow disk $volhomeDisk !"
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dryRun lvcreate -L$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 ${vmName}.res is already present! Continue? [y/N]"
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read
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if ! [[ "$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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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="$(command -v drbdadm)"
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($doDryRun) && drbdadm="${drbdadm} --dry-run"
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($doDryRun) && trap "rm /etc/drbd.d/${vmName}.res && ssh ${slaveKVMIP} rm /etc/drbd.d/${vmName}.res" 0
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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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ssh $slaveKVMIP ${drbdadm} create-md "$vmName"
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${drbdadm} adjust "$vmName"
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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 !($doDryRun); then
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sleep 5 && drbd-overview | tail -4
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drbdDiskPath="/dev/drbd/by-res/${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
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if ! [[ "$REPLY" =~ (Y|y) ]]; then
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exit 1
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fi
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fi
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fi
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virtHome=""
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[ "$volhomeDisk" != "none" ] && virtHome="--disk path=/dev/drbd/by-disk/${volhomeDisk}/${vmName}_home,bus=virtio,io=threads,cache=none,format=raw"
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bootMode="--pxe"
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[ -f "$isoImagePath" ] && bootMode="--cdrom=$isoImagePath"
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dryRun virt-install --connect=qemu:///system \
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--name=${vmName} \
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--cpu mode=host-passthrough --vcpus=${vCPU} \
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--memory=${memory} \
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--disk path=/dev/drbd/by-disk/${volrootDisk}/${vmName}_root,bus=virtio,io=threads,cache=none,format=raw \
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$virtHome \
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$bootMode \
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--network=bridge:${bridgeName},model=virtio \
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--noautoconsole --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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if [ -x /usr/share/scripts/evomaintenance.sh ]; then
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($doDryRun) || echo "Install VM ${vmName} (add-vm.sh)" | /usr/share/scripts/evomaintenance.sh
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fi
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echo -e "\e[32mDone! Now you can install your VM with virt-manager.\e[39m"
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@ -0,0 +1,94 @@
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#!/bin/sh
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# NOTE: kvmstats relies on the hxselect(1) command to parse virsh' xml
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# files. On Debian, this command is provided by the 'html-xml-utils'
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# package.
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set -e -u
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usage () {
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echo 'usage: kvmstats.sh [-a] [-u K|M|G]'
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exit 1
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}
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for DEP in hxselect lvs tempfile bc
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do
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if [ -z "$(which $DEP)" ]
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then
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echo "kvmstats.sh: $DEP not found in \$PATH" 1>&2
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exit 1
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fi
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done
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POW=$(echo 1024 ^ 3 | bc)
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while [ $# -ne 0 ] && echo "$1" | grep -q '^-[[:alnum:]]'
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do
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case $1 in
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'-u')
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case $2 in
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'K')
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POW=$(echo 1024 ^ 1 | bc)
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;;
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'M')
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POW=$(echo 1024 ^ 2 | bc)
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;;
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'G')
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POW=$(echo 1024 ^ 3 | bc)
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;;
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*)
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usage
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esac
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;;
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'-a')
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SHOW_AVAIL=y
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;;
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*)
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usage
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esac
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shift
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done
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# since libvirt seems to store memoy in KiB, POW must be lowered by 1
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POW=$((POW / 1024))
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TMPFILE=$(tempfile -s kvmstats)
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LVSOUT=$(tempfile -s kvmstats)
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lvs --units b --nosuffix >"$LVSOUT"
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for VM in $(virsh list --all --name)
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do
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VCPU=$(hxselect -c 'domain vcpu' </etc/libvirt/qemu/"$VM.xml")
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RAM_KIB=$(hxselect -c 'domain memory' </etc/libvirt/qemu/"$VM.xml")
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RAM=$((RAM_KIB / POW))
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for DEV in $(hxselect -s'\n' 'domain devices disk[device=disk] source' </etc/libvirt/qemu/"$VM.xml" | cut -d\" -f2)
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do
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case $DEV in
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/dev/drbd/*)
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DISK=$(awk "/$VM/ { ans += \$NF } END { print ans / 1024 ^ 3 }" <"$LVSOUT")
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break # avoid to compute DISK for each disk
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;;
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*.qcow2)
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DISK=$(du -sBG "$DEV" | awk '{ print substr($1, 0, length($1) - 1) }')
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;;
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*)
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DISK=0
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esac
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done
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RUNNING=$(virsh domstate "$VM" | grep -q '^running$' && echo yes || echo no)
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echo "$VM" "$VCPU" "$RAM" "$DISK" "$RUNNING"
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done >"$TMPFILE"
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(
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echo vm vcpu ram disk running
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cat "$TMPFILE"
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awk '/yes$/ { vcpu += $2; ram += $3; disk += $4; running++ } END { print "TOTAL(running)", vcpu, ram, disk, running }' <"$TMPFILE"
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if [ $SHOW_AVAIL ]
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then
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AV_CPU=$(awk '/^processor/ { cpu++ } END { print cpu }' /proc/cpuinfo)
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AV_MEM=$(awk '/^MemTotal:/ { print int($2 / 1024 ^ 2) }' /proc/meminfo)
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echo AVAILABLE "$AV_CPU" "$AV_MEM"
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fi
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) | column -t
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rm "$TMPFILE" "$LVSOUT"
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@ -1,13 +1,52 @@
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---
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- name: remove old package
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apt:
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name: kvm-tools
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purge: yes
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state: absent
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- include_role:
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name: remount-usr
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when: kvm_scripts_dir is search ("/usr")
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- name: add-vm script is present
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copy:
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src: add-vm.sh
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dest: "{{ kvm_scripts_dir }}/add-vm"
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mode: "0700"
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owner: root
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group: root
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force: yes
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- name: migrate-vm scripts is present
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- name: migrate-vm script is present
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copy:
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src: migrate-vm.sh
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dest: /usr/share/scripts/migrate-vm
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mode: "0755"
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dest: "{{ kvm_scripts_dir }}/migrate-vm"
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mode: "0700"
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owner: root
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group: root
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force: yes
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- name: kvmstats script is present
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copy:
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src: kvmstats.sh
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dest: "{{ kvm_scripts_dir }}/kvmstats"
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mode: "0700"
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owner: root
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group: root
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force: yes
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force: yes
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# backward compatibility
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- name: remove old migrate-vm script
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file:
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path: /usr/share/scripts/migrate-vm
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state: absent
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when: "'/usr/share/scripts' not in kvm_scripts_dir"
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- name: remove old kvmstats script
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file:
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path: /usr/share/scripts/kvmstats
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state: absent
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when: "'/usr/share/scripts' not in kvm_scripts_dir"
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Reference in new issue