koniu · February 23, 2016 14:07
diff --git a/myvirt-facts b/myvirt-facts
 #!/bin/bash

 # myvirt-facts - get networking facts from bridged libvirt guests
 # https://gist.github.com/koniu/837a574e7af377e37d67
 # author <koniu@riseup.net>
 #
 # usage:
 #   myvirt-facts <domain> [ip|arp|hostname]
 #
 # for convenience symlink to: 
 #   myvirt-ip
 #   myvirt-arp
 #   myvirt-hostname
 #   myvirt-ssh


 domains() {
  echo
  echo Domains:
  virsh -q list --all
  echo
 }

 fail() {
  domains
  exit 1
 }

 usage() {
  echo "usage: $0 <domain>"
  fail
 }

 get_host_ip() {
  ip addr | grep 'state UP' -A2 | tail -n1 | awk '{print $2}' | cut -f1  -d'/'
 }

 fill_arp() {
  for i in $(seq 1 254); do
    ping -c 1 -n -q -r  -t 1 -s 1  -W 1 \ 
      `get_host_ip | cut -d. -f1-3`.$i > /dev/null &
  done
 }

 get_guest_state() {
  virsh -q domstate $1
 }

 get_guest_iface() {
  virsh -q domiflist $1 || fail
 }

 get_guest_arp() {
  get_guest_iface $1 | awk '{print $5}'
 }

 get_guest_ip() {
  arp -en | grep `get_guest_arp $1` | head -n1 | awk '{print $1}'
 }

 get_guest_hostname() {
  host `get_guest_ip $1` | cut -d\   -f5 | cut -d\.  -f1 
 }


 # no domain name provided
 [ -z $1 ] && usage

 # refresh arp table
 fill_arp

 # output based on invocation
 case `basename $0` in
  *virt-facts)
    state=`get_guest_state $1`
    iface=`get_guest_iface $1`
    arp=`get_guest_arp $1`
    ip=`get_guest_ip $1`
    hostname=`get_guest_hostname $1`
    case $2 in
      "") 
        echo "Domain:    $1"
        echo "State:     $state"
        echo
        echo "Hostname:  $hostname"
        echo "IP:        $ip"
        echo "ARP:       $arp"
      ;;  
      *)  
        get_guest_$2 $1
    esac
  ;;  
  *virt-ssh)
    ip=`get_guest_ip $1`
    cmd=$(echo $0 | cut -d\- -f2)
    shift 1
    echo % $cmd -l $USER $ip $@
    $cmd -l $USER $ip 
    break
  ;;  
  *virt-*) get_guest_$(echo $0 | cut -d\- -f2) $1 ;;
  *) echo wrong name; fail ;;
 esac
	#!/bin/bash

	# myvirt-facts - get networking facts from bridged libvirt guests
	# https://gist.github.com/koniu/837a574e7af377e37d67
	# author <koniu@riseup.net>
	#
	# usage:
	# myvirt-facts <domain> [ip\|arp\|hostname]
	#
	# for convenience symlink to:
	# myvirt-ip
	# myvirt-arp
	# myvirt-hostname
	# myvirt-ssh


	domains() {
	echo
	echo Domains:
	virsh -q list --all
	echo
	}

	fail() {
	domains
	exit 1
	}

	usage() {
	echo "usage: $0 <domain>"
	fail
	}

	get_host_ip() {
	ip addr \| grep 'state UP' -A2 \| tail -n1 \| awk '{print $2}' \| cut -f1 -d'/'
	}

	fill_arp() {
	for i in $(seq 1 254); do
	ping -c 1 -n -q -r -t 1 -s 1 -W 1 \
	`get_host_ip \| cut -d. -f1-3`.$i > /dev/null &
	done
	}

	get_guest_state() {
	virsh -q domstate $1
	}

	get_guest_iface() {
	virsh -q domiflist $1 \|\| fail
	}

	get_guest_arp() {
	get_guest_iface $1 \| awk '{print $5}'
	}

	get_guest_ip() {
	arp -en \| grep `get_guest_arp $1` \| head -n1 \| awk '{print $1}'
	}

	get_guest_hostname() {
	host `get_guest_ip $1` \| cut -d\ -f5 \| cut -d\. -f1
	}


	# no domain name provided
	[ -z $1 ] && usage

	# refresh arp table
	fill_arp

	# output based on invocation
	case `basename $0` in
	*virt-facts)
	state=`get_guest_state $1`
	iface=`get_guest_iface $1`
	arp=`get_guest_arp $1`
	ip=`get_guest_ip $1`
	hostname=`get_guest_hostname $1`
	case $2 in
	"")
	echo "Domain: $1"
	echo "State: $state"
	echo
	echo "Hostname: $hostname"
	echo "IP: $ip"
	echo "ARP: $arp"
	;;
	*)
	get_guest_$2 $1
	esac
	;;
	*virt-ssh)
	ip=`get_guest_ip $1`
	cmd=$(echo $0 \| cut -d\- -f2)
	shift 1
	echo % $cmd -l $USER $ip $@
	$cmd -l $USER $ip
	break
	;;
	virt-) get_guest_$(echo $0 \| cut -d\- -f2) $1 ;;
	*) echo wrong name; fail ;;
	esac