Janky image builder

janky_image_builder

#!/bin/bash
set -e

NAME=$1
KICKSTART=$2
RPM_REPO=$3
BRIDGE="br100"
BRIDGE="virbr0"

function usage {
    print "imagebuilder.sh <name of image> <kickstart file> [<rpm repo>]"
}

if [ -z $NAME ]; then
    echo "You must provide a name for this image"
    exit -1
fi

if [ -z $KICKSTART  ] || [ ! -f $KICKSTART ]; then
    echo "You must provide a valid kickstart for this image"
    exit -1
fi

RPM_REPO_DEFAULT='http://centos.netnitco.net/6/os/x86_64/'
if [ -z $RPM_REPO ]; then
    echo "WARNING: Using $RPM_REPO_DEFAULT as you did not specify an RPM repo"
    RPM_REPO=$RPM_REPO_DEFAULT
fi

if [ $UID != 0 ]; then
    echo "You must run this as root"
    exit -1
fi

VMSTATUS=`virsh list | tail -n+3 | grep $NAME | awk '{print $3}'`

if [ ! -e $VMSTATUS ]; then
    if [ "$VMSTATUS" == "running" ]; then
        echo "There is already a virtual machine running with name: $NAME"
        read -p "Would you like to destroy and undefine this virtual machine (y/n)? "
        REPLY=`echo $REPLY | awk '{print tolower($0)}'`
        if [ "$REPLY" == "n" ]; then
            echo "Exiting"
            exit -1
        fi
        virsh destroy $NAME
        virsh undefine $NAME
    fi
fi

TEMPDIR=`mktemp -d`
ln -s `realpath $KICKSTART` $TEMPDIR/ks.cfg

virt-install --accelerate --name=$NAME \
    --noreboot \
    --ram=1024 \
    --file=$NAME.img \
    --file-size=10 \
    --machine=pc \
    --location $RPM_REPO \
    --graphics vnc,listen=0.0.0.0 \
    --noautoconsole \
    --initrd-inject=$TEMPDIR/ks.cfg --extra-args "ks=file:/ks.cfg stage2=$RPM_REPO/images/install.img text" \
    -w bridge:$BRIDGE -w bridge:$BRIDGE

rm -rf $TEMPDIR

#virsh destroy $NAME
#virsh undefine $NAME