config-bash/libs/virtualization.bash

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#!/bin/bash
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hypervisor_connect() {
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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 ${hypervisor}"
virsh --connect=qemu+ssh://${USER}@${hypervisor}/system
}
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hypervisor_command() {
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if [ -e "${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}@${hypervisor}/system "$*"
}
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vm_create() {
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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"
}
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vm_start() {
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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 ${hypervisor} with virsh"
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virsh --connect=qemu+ssh://${USER}@${hypervisor}/system start ${name}
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}
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vm_stop() {
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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 ${hypervisor} with virsh"
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virsh --connect=qemu+ssh://${USER}@${hypervisor}/system shutdown ${name}
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}
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vm_destroy() {
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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 ${hypervisor} with virsh"
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virsh --connect=qemu+ssh://${USER}@${hypervisor}/system destroy ${name}
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}
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vm_connect() {
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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 ${hypervisor} with virsh"
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virsh --connect=qemu+ssh://${USER}@${hypervisor}/system ttyconsole ${name}
virsh --connect=qemu+ssh://${USER}@${hypervisor}/system console ${name}
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}
#### A tester
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vm_change_bridge() {
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if [ $# -ne 4 ]; then echo "Usage : $0 hypervisor_name_or_ip vm_name vm_mac vm_new_bridge"; return 1; fi
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hypervisor=${1}
name=${2}
mac=${3}
bridge=${4}
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virsh --connect=qemu+ssh://${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}
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}
#### A tester
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vm_add_data_disk() {
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if [ $# -ne 2 ]; then echo "Usage : $0 hypervisor_name_or_ip vm_name size"; return 1; fi
hypervisor=${1}
name=${2}
size=${3}
#pool-list
#vol-create-as --pool guests_data --name virt-cha-mirror --capacity 200G --format raw
#attach-disk virt-cha-mirror /dev/lvm_guests_data/virt-cha-mirror vdb --cache writethrough
#domblklist virt-cha-mirror
}
#### 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
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complete -W "$(_hypervisors)" vm_change_bridge