CloudStack 注册模板脚本分析

注册系统虚拟机模板

/usr/share/cloudstack-common/scripts/storage/secondary/cloud-install-sys-tmplt

内容如下：

usage() {
  printf "or " >&2
}

failed() {
  echo "Installation failed"
  exit $1
}
#set -x
mflag=
fflag=
ext="vhd"
templateId=
hyper=
msKey=password
DISKSPACE=5120000  #free disk space required in kilobytes
dbHost=
dbUser=
dbPassword=
jasypt='/usr/share/cloudstack-common/lib/jasypt-1.9.0.jar'
while getopts 'm:h:f:u:Ft:e:s:o:r:d' OPTION
do
  case $OPTION in
  m)    mflag=1
                mntpoint="$OPTARG"
                ;;
  f)    fflag=1
                tmpltimg="$OPTARG"
                ;;
  u)    uflag=1
                url="$OPTARG"
                ;;
  F)    Fflag=1 ;;
  t)    templateId="$OPTARG"
                ;;
  e)    ext="$OPTARG"
                ;;
  h)    hyper="$OPTARG"
                ;;
  s)    sflag=1
                msKey="$OPTARG"
                ;;
  o)    oflag=1
        dbHost="$OPTARG"
                ;;
  r)    rflag=1
        dbUser="$OPTARG"
                ;;
  d)    dflag=1
        dbPassword="$OPTARG"
                ;;
  ?)    usage
                failed 2
                ;;
  esac
done

  usage
  failed 2
if [ -z "$hyper" ]
then
  usage

if [ ! -d $mntpoint ]
then
  echo "mount point $mntpoint doesn't exist "
  failed 4
fi

if [[ "$fflag" == "1" && ! -f $tmpltimg ]]
then
  echo "template image file $tmpltimg doesn't exist"
  failed 3
fi

if [ "$oflag" != 1 ]; then
fi
if [ "$rflag" != 1 ]; then
fi

if [ -f /etc/cloudstack/management/db.properties ]; then
    if [ "$encType" == "file" ]
    then
        msKey=$(cat /etc/cloudstack/management/key)
        if [ ! "$sflag" == "1" ]
        then
            echo "Encryption type web requires mgmt secret key using -s option"
            failed 9
        fi
    fi
fi

        if [ ! $encPassword == "" ]
                if [ ! $dbPassword ]
                then
                fi
        fi
else
    if [ "$dflag" != 1 ]; then
    fi
fi

if [ "$templateId" == "" ]
then
   if [ "$hyper" == "kvm" ]
   then
      ext="qcow2"
   elif [ "$hyper" == "xenserver" ]
   then
      ext="vhd"
   elif [ "$hyper" == "vmware" ]
   then
      ext="ova"
   else
      usage
      failed 2
   fi
fi

if [ ! $templateId ]
then
        echo "Unable to get template Id from database"
        failed 8
fi

localfile=$(uuidgen).$ext

mntpoint=`echo "$mntpoint" | sed 's|/*$||'`

destdir=$mntpoint/template/tmpl/1/$templateId/

mkdir -p $destdir
if [ $? -ne 0 ]
then
  printf "Failed to write to mount point $mntpoint -- is it mounted? "
  failed 3
fi

if [ "$Fflag" == "1" ]
then
  rm -rf $destdir/*
  if [ $? -ne 0 ]
  then
    echo "Failed to clean up template directory $destdir -- check permissions?"
    failed 2
  fi
if [ -f $destdir/template.properties ]
then
  failed 4
fi

destvhdfiles=$(find $destdir -name *.$ext)
if [ "$destvhdfiles" != "" ]
then
  echo "Data already exists at destination $destdir -- use -F to force cleanup of old template"
  failed 5
fi

tmpfile=$(dirname $0)/$localfile

touch $tmpfile
if [ $? -ne 0 ]
then
  printf "Failed to create temporary file in directory $(dirname $0) -- is it read-only or full? "
  failed 4
fi

destcap=$(df -P $destdir | awk '{print $4}' | tail -1 )

localcap=$(df -P $(dirname $0) | awk '{print $4}' | tail -1 )

if [ "$uflag" == "1" ]
then
  wget -O $tmpfile $url
  if [ $? -ne 0 ]
  then
    echo "Failed to fetch system vm template from $url"
    failed 5
  fi
fi

if [ "$fflag" == "1" ]
then
  cp $tmpltimg $tmpfile
  if [ $? -ne 0 ]
  then
    printf "Failed to create temporary file in directory $(dirname $0) -- is it read-only or full? "
    failed 6
  fi
fi

installrslt=$($(dirname $0)/createtmplt.sh -s 2 -d 'SystemVM Template' -n $localfile -t $destdir/ -f $tmpfile -u -v)

if [ $? -ne 0 ]
then
  echo "Failed to install system vm template $tmpltimg to $destdir: $installrslt"
  failed 7
fi

if [ "$ext" == "ova" ]
then
  tar xvf $destdir/$localfile -C $destdir &> /dev/null
fi

tmpltfile=$destdir/$localfile
tmpltsize=$(ls -l $tmpltfile| awk -F" " '{print $5}')

echo "$ext=true" >> $destdir/template.properties
echo "id=$templateId" >> $destdir/template.properties
echo "public=true" >> $destdir/template.properties
echo "$ext.filename=$localfile" >> $destdir/template.properties
echo "uniquename=routing-$templateId" >> $destdir/template.properties
echo "$ext.virtualsize=$tmpltsize" >> $destdir/template.properties
echo "virtualsize=$tmpltsize" >> $destdir/template.properties
echo "$ext.size=$tmpltsize" >> $destdir/template.properties

echo "Successfully installed system VM template $tmpltimg to $destdir"

执行方式

Usage: cloud-install-sys-tmplt: -m <secondary storage mount point> -f <system vm template file> [-h <hypervisor name: kvm|vmware|xenserver> ] [ -s <mgmt server secret key, if you specified any when running cloudstack-setup-database, default is password>][-u <Url to system vm template>] [-F <clean up system templates of specified hypervisor>] [-e <Template suffix, e.g vhd, ova, qcow2>] [-o <Database server hostname or ip, e.g localhost>] [-r <Database user name, e.g root>] [-d <Database password. Fllowed by nothing if the password is empty>]
or
cloud-install-sys-tmplt: -m <secondary storage mount point> -u <http url for system vm template> [-h <hypervisor name: kvm|vmware|xenserver> ] [ -s <mgmt server secret key>]

/usr/share/cloudstack-common/scripts/storage/secondary/cloud-install-sys-tmplt -m /opt/secondary/ -f kvm.qcow2.bz2  -h kvm -s password