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305 lines
6.7 KiB
Bash
Executable File
305 lines
6.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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# $Id: runvm.sh 9132 2010-06-04 20:17:43Z manuel $ $HeadURL: svn://svn.lab.vmops.com/repos/vmdev/java/scripts/storage/zfs/nfs/runvm.sh $
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# runvm.sh -- start a vm from a directory containing the kernel and os images
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#
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#
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usage() {
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printf "Usage: %s: -v <vnet-id> -i <ip-address> -m <memory in MB> -a <mac address> -g <gateway ip addr> -c <vnc console #> -w <vnc password>-l <vm label> -n <# cores> -u <compute unites in pct> <image-dir>\n" $(basename $0) >&2
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}
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check_vnetd_running() {
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/sbin/lsmod | grep vnet_module > /dev/null
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local module_loaded=$?
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if [[ ( -z $(pidof vnetd) ) && ( $module_loaded -ne 0 ) ]]
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then
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printf 'vnet: Neither userspace daemon running nor kernel module loaded!, not starting vm '"$vmname\n" >&2
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exit 2
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fi
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}
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is_xen_3_3 () {
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local a;
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local b;
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a=$(xm info | grep xen_minor | cut -d":" -f2);
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b=$(echo $a)
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if [ $b -lt 3 ]
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then
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return 1
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fi
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return 0
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}
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get_dom0_ip () {
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if ifconfig eth0 &> /dev/null;
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then
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eval "$1=$(ifconfig eth0 | awk '/inet addr/ {split ($2,A,":"); print A[2]}')"
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return 0
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elif ifconfig eth1 &> /dev/null;
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then
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eval "$1=$(ifconfig eth1 | awk '/inet addr/ {split ($2,A,":"); print A[2]}')"
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return 0;
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fi
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return 1;
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}
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create_vnet () {
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local vnetid=$1
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local bridgeid="vnbr""$vnetid"
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local vnifid="vnif""$vnetid"
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local longvnetid="0000:0000:0000:0000:0000:0000:0000:""$vnetid"
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eval "$2=$bridgeid"
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# Create the vnet even if it already exists. /usr/sbin/vn operation is
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# idempotent
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vn vnet-create -b ${bridgeid} ${longvnetid} &> /dev/null
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#echo $bridgeid $vnifid $longvnetid
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return 0
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}
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# check if gateway domain is up and running
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check_gw() {
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ping -c 1 -n -q $1 > /dev/null
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if [ $? -gt 0 ]
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then
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sleep 1
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ping -c 1 -n -q $1 > /dev/null
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fi
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return $?;
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}
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#Append an entry into dhcp hosts file and knock the dhcp server on its head
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add_dhcp_entry() {
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local gw=$1
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local mac=$2
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local ip=$3
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local vm=$4
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ssh -o StrictHostKeyChecking=no -i ./id_rsa root@$gw "/root/edithosts.sh $mac $ip $vm" >/dev/null
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if [ $? -gt 0 ]
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then
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$5=1
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return 1
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fi
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return 0
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}
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#set -x
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vflag=
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iflag=
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mflag=
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aflag=
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gflag=
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lflag=
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cflag=
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vcpus=0
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cpucap=0
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vncpwd="password"
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while getopts 'v:i:m:a:g:l:c:n:u:w:' OPTION
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do
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case $OPTION in
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v) vflag=1
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vnetid="$OPTARG"
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;;
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i) iflag=1
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ipaddr="$OPTARG"
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;;
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m) mflag=1
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ram="$OPTARG"
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;;
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a) aflag=1
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macaddr="$OPTARG"
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;;
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g) gflag=1
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gateway="$OPTARG"
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;;
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l) lflag=1
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vmname="$OPTARG"
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;;
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c) cflag=1
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vncconsole="$OPTARG"
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;;
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w) wflag=1
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vncpwd="$OPTARG"
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;;
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n) nflag=1
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vcpus="$OPTARG"
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;;
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u) uflag=1
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cpucap="$OPTARG"
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;;
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?) usage
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exit 2
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;;
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esac
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done
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if [ "$vflag$mflag$iflag$aflag$gflag$lflag$cflag" != "1111111" ]
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then
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usage
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exit 2
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fi
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wincpuopts=""
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if [ "$vcpus" == 0 -a "$cpucap" == 0 ]
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then
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#Windows doesn't like it
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wincpuopts=""
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elif [ "$vcpus" == 0 ]
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then
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wincpuopts="cpu_cap=$cpucap"
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elif [ "$cpucap" == 0 ]
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then
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wincpuopts="vcpus=$vcpus"
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else
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wincpuopts="vcpus=$vcpus cpu_cap=$cpucap"
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fi
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shift $(($OPTIND - 1))
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imagedir=$1
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if [ -z $imagedir ]
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then
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usage
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exit 2
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fi
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if [ "$vmname" == gateway ]
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then
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printf "Error: $vmname is illegal (this is the hostname of domR)\n" >&2
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exit 2
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fi
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if xm list $vmname &>/dev/null
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then
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printf "Error: vm $vmname already exists\n" >&2
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exit 2
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fi
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if [ "$ipaddr" == "10.1.1.1" ]
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then
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printf "Error: 10.1.1.1 is the gateway and cannot be assigned to a vm\n" >&2
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exit 2
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fi
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#make sure vnetd is running
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check_vnetd_running
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# grab the kernel, bootloader and disk images
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kernel="$imagedir/"$(ls $imagedir | grep vmlinuz)
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ramdisk="$imagedir/"$(ls $imagedir | grep initrd)
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rootdisk="$imagedir/"$(ls $imagedir | grep vmi-root)
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swapdisk="$imagedir/"$(ls $imagedir | grep swap)
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datadisk1="$imagedir/"$(ls $imagedir | grep vmi-data1)
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datadisk2="$imagedir/"$(ls $imagedir | grep vmi-data2)
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#set -x
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if [ "$rootdisk" == "$imagedir/" ]
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then
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printf "Error: No root disk found\nVM $vmname not started\n" >&2
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exit 2
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fi
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if [ "$datadisk1" == "$imagedir/" ]
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then
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#look for subdirs called 'datadisk'
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i=0
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datadisks=( )
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for diskfs in $(find $imagedir -type d | grep datadisk)
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do
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datadisks[$i]=$(find $diskfs | grep vmi-data | head -1) #expect only 1 disk
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let i=i+1
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done
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datadisk1=${datadisks[0]};
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if [ -z "$datadisk1" ]
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then
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printf "Error: No data disk found\nVM $vmname not started\n" >&2
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exit 2
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fi
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fi
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linux=0
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windows=0
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pygr=0
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if [ "$kernel" != "$imagedir/" ] && [ "$ramdisk" != "$imagedir/" ]
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then
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#Linux kernel
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linux=1
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builder="linux"
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device_model=""
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elif [ -f "$imagedir/pygrub" ]
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then
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#pygrub linux image
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pygr=1
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else
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kernel="/usr/lib/xen/boot/hvmloader"
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windows=1
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builder="hvm"
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device_model="/usr/lib64/xen/bin/qemu-dm"
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fi
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#get dom 0 ip to figure out which ip to bind vnc to
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dom0ip=""
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get_dom0_ip dom0ip
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# check if gateway domain is up and running
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if ! check_gw "$gateway"
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then
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printf "Unable to ping the gateway domain, exiting\n" >&2
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exit 3
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fi
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#Append an entry into dhcp hosts file and knock the dhcp server on its head
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added=0
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if ! add_dhcp_entry $gateway $macaddr $ipaddr $vmname $added
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then
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printf "Unable add dhcp entry on gateway (reason=$added), exiting\n" >&2
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exit 4
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fi
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# Create the vnet locally if not already created
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bridge=""
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if ! create_vnet "$vnetid" bridge ; then
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printf "Failed to create vnet, exiting\n" >&2
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exit 5
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fi
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#hvm disk prefix for 3.1 is file:, for 3.3 it is tap:aio
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hvmdisk="tap:aio"
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if ! is_xen_3_3
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then
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hvmdisk="file"
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fi
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# create the vm (linux)
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if [ $linux -eq 1 ]; then
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xm new /dev/null kernel="$kernel" name="$vmname" disk="tap:aio:$rootdisk,xvda1,w" disk="tap:aio:$swapdisk,xvda2,w" disk="tap:aio:$datadisk1,xvda3,w" ramdisk="$ramdisk" memory=$ram vif="mac=$macaddr,bridge=$bridge" dhcp="dhcp" root="/dev/xvda1 ro" vnc=1 vnclisten="$dom0ip" vfb="type=vnc,vncdisplay=$vncconsole,vncpasswd=$vncpwd" ip="$ipaddr" extra="fastboot" vcpus=$vcpus cpu_cap=$cpucap
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elif [ $pygr -eq 1 ]; then
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xm new /dev/null bootloader="/usr/bin/pygrub" name="$vmname" disk="tap:aio:$rootdisk,sda,w" disk="tap:aio:$datadisk1,sdb,w" memory=$ram vif="mac=$macaddr,bridge=$bridge" dhcp="dhcp" root="/dev/sda ro" vnc=1 vnclisten="$dom0ip" vfb="type=vnc,vncdisplay=$vncconsole,vncpasswd=$vncpwd" ip="$ipaddr" extra="fastboot" vcpus=$vcpus cpu_cap=$cpucap
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else
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#create the vm (windows/HVM)
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xm new /dev/null kernel="$kernel" name="$vmname" disk="$hvmdisk:$rootdisk,hda,w" disk="$hvmdisk:$datadisk1,hdb,w" builder="$builder" device_model="$device_model" memory=$ram vif="mac=$macaddr,bridge=$bridge,type=ioemu" dhcp="dhcp" vnc=1 vnclisten="$dom0ip" vncdisplay="$vncconsole" vncpasswd="$vncpwd" usbdevice="tablet" localtime="yes" $wincpuopts
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fi
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if [ $? -gt 0 ]; then
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exit 10
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fi
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#Kick off the vm
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xm start $vmname
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if [ $? -gt 0 ]; then
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exit 20
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fi
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exit 0
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