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config-bash/libs/virtualization.bash

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#!/bin/bash
hypervisor_connect() {
if [ -e "${1}" ]; then echo "Usage : $0 hypervisor_name_or_ip"; return 1; fi
hypervisor=${1}
echo
echo "Trying to start interactive virsh session on ${hypervisor}"
term_change_title "virsh session for ${USER} on ${hypervisor}"
virsh --connect=qemu+ssh://${USER}@${hypervisor}/system
}
hypervisor_command() {
if [ -e "${1}" ]; then echo "Usage : $0 hypervisor_name_or_ip"; return 1; fi
hypervisor=${1}
shift
echo
echo "Trying to exec virsh command ($*) on ${hypervisor}"
virsh --connect=qemu+ssh://${USER}@${hypervisor}/system "$*"
}
vm_create() {
if [ $# -ne 5 ]; then echo "Usage : $0 hypervisor_name_or_ip vm_name vm_ram_size vm_disk_size vm_mac"; return 1; fi
hypervisor=${1}
name=${2}
ramsize=${3}
disksize=${4}
mac=${5}
#mac=$( grep ${name} ~/repositories/fai/config-dhcp/dhcpd-hosts.conf | sed -e 's/^.*hardware.*ethernet\s*\([0-9a-zA-Z:]*\);.*$/\1/' )
echo "Creating VM with virt-install"
virt-install --connect=qemu+ssh://${USER}@${hypervisor}/system \
--name=${name} \
--description="${name}" \
--cpu=host \
--ram=${ramsize} \
--disk=/dev/lvm_guests_system/${name},size=${disksize},bus=virtio,cache=writethrough,io=native \
--network=bridge=br192,mac=${mac},model=virtio \
--os-type=linux \
--os-variant=debiansqueeze \
--boot=network,hd,menu=on \
--pxe \
--graphics=vnc \
--noautoconsole
echo "Done"
}
vm_start() {
if [ $# -ne 2 ]; then echo "Usage : $0 hypervisor_name_or_ip vm_name"; return 1; fi
hypervisor=${1}
name=${2}
echo
echo "Trying to start ${name} on ${hypervisor} with virsh"
virsh --connect=qemu+ssh://${USER}@${hypervisor}/system start ${name}
}
vm_stop() {
if [ $# -ne 2 ]; then echo "Usage : $0 hypervisor_name_or_ip vm_name"; return 1; fi
hypervisor=${1}
name=${2}
echo
echo "Trying to stop ${name} on ${hypervisor} with virsh"
virsh --connect=qemu+ssh://${USER}@${hypervisor}/system shutdown ${name}
}
vm_destroy() {
if [ $# -ne 2 ]; then echo "Usage : $0 hypervisor_name_or_ip vm_name"; return 1; fi
hypervisor=${1}
name=${2}
echo
echo "Trying to destroy ${name} on ${hypervisor} with virsh"
virsh --connect=qemu+ssh://${USER}@${hypervisor}/system destroy ${name}
}
vm_connect() {
if [ $# -ne 2 ]; then echo "Usage : $0 hypervisor_name_or_ip vm_name"; return 1; fi
hypervisor=${1}
name=${2}
echo
echo "Trying to connect to ${name} on ${hypervisor} with virsh"
term_change_title "virsh session for ${USER} on ${hypervisor} : ${name} console"
virsh --connect=qemu+ssh://${USER}@${hypervisor}/system ttyconsole ${name}
virsh --connect=qemu+ssh://${USER}@${hypervisor}/system console ${name}
}
#### A tester
vm_change_bridge() {
if [ $# -ne 4 ]; then echo "Usage : $0 hypervisor_name_or_ip vm_name vm_mac vm_new_bridge"; return 1; fi
hypervisor=${1}
name=${2}
mac=${3}
bridge=${4}
virsh --connect=qemu+ssh://${USER}@${hypervisor}/system domiflist ${name}
virsh --connect=qemu+ssh://${USER}@${hypervisor}/system detach-interface --config --domain ${name} --type bridge --mac ${mac}
virsh --connect=qemu+ssh://${USER}@${hypervisor}/system attach-interface --config --domain ${name} --type bridge --mac ${mac} --source ${bridge}
virsh --connect=qemu+ssh://${USER}@${hypervisor}/system domiflist ${name}
}
vm_add_data_disk() {
if [ $# -ne 2 ]; then echo "Usage : $0 hypervisor_name_or_ip vm_name size"; return 1; fi
hypervisor=${1}
name=${2}
size=${3}
virsh --connect=qemu+ssh://${USER}@${hypervisor}/system pool-list
virsh --connect=qemu+ssh://${USER}@${hypervisor}/system vol-create-as --pool guests_data --name ${name} --capacity ${size} --format raw
virsh --connect=qemu+ssh://${USER}@${hypervisor}/system attach-disk ${name} /dev/lvm_guests_data/${name} vdb --cache writethrough
virsh --connect=qemu+ssh://${USER}@${hypervisor}/system domblklist ${name}
}
vm_create_magick() {
if [ $# -ne 4 ]; then echo "Usage : $0 hypervisor_name_or_ip vm_name vm_ram_size vm_disk_size"; return 1; fi
hypervisor=${1}
name=${2}
ramsize=${3}
disksize=${4}
IFS='.' read -a array <<< "$(ssh admin dig +search +short $1)"
ip=$(printf "%3d.%3d.%3d.%3d\n" ${array[0]} ${array[1]} ${array[2]} ${array[3]})
mac=$(printf "52:54:00:%02X:%02X:%02X\n" ${array[1]} ${array[2]} ${array[3]})
echo "Creating VM with virt-install"
echo " * mac = ${mac}"
echo " * ip = ${ip}"
virt-install --connect=qemu+ssh://${USER}@${hypervisor}/system \
--name=${name} \
--description="${name}" \
--cpu=host \
--ram=${ramsize} \
--disk=/dev/lvm_guests_system/${name},size=${disksize},bus=virtio,cache=writethrough,io=native \
--network=bridge=br192,mac=${mac},model=virtio \
--os-type=linux \
--os-variant=debianwheezy \
--boot=network,hd,menu=on \
--pxe \
--graphics=vnc \
--noautoconsole
echo "Done"
}
#### bash completion
_hypervisors() {
if [ -e ~/.ssh/config ]; then
configured_hypervisors=$(cat ~/.ssh/config | egrep -i "^\s*host\s+[a-zA-Z]" | sed -e "s/^host\s*//i" | grep -i hypervisor)
fi
if [ -e ~/.ssh/known_hosts ]; then
known_hypervisors=$(cat ~/.ssh/known_hosts | cut -f 1 -d ' ' | sed -e 's/,.*//g' | grep -v "\[" | grep -i hypervisor | uniq)
fi
echo $configured_hypervisors $known_hypervisors
}
#complete -W "$(cat ~/.ssh/config | egrep -i "^\s*host\s+[a-zA-Z]" | sed -e "s/^host\s*//i" | grep -i hypervisor)" hypervisor_connect
complete -W "$(_hypervisors)" hypervisor_connect
complete -W "$(_hypervisors)" hypervisor_command
complete -W "$(_hypervisors)" vm_create
complete -W "$(_hypervisors)" vm_start
complete -W "$(_hypervisors)" vm_stop
complete -W "$(_hypervisors)" vm_connect
complete -W "$(_hypervisors)" vm_change_bridge
complete -W "$(_hypervisors)" vm_add_data_disk
complete -W "$(_hypervisors)" vm_create_magick
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