Difference between revisions of "VMware Backup Script"
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Latest revision as of 08:45, 25 July 2013
Current Script
#! /bin/bash
##
## Change the information below
##
USER=n2o
PASS=xxxxxx
BACKUPDEST=/home/n2o/backups/vm-backup
DAYS_TO_KEEP_TAR=5
## include any VMs in this array that you do NOT want backed up. Use
## the directory name.
EXEMPTION_ARRAY=( None )
## Do not modify anything below this line
HOST=$(hostname)
DATE=$(date)
VMCMD=vmware-vim-cmd
VM_WAS_RUNNING=false
VM_EXEMPT=false
##
## Create the backup directories if they do not exist
##
function doCheckDirectories
{
## if the archives directory does not exist, create it
if [ ! -d $BACKUPDEST/archives ]; then
echo "$BACKUPDEST/archives does not exist, creating."
mkdir $BACKUPDEST/archives
fi
## if the directories directory does not exist, create it
if [ ! -d $BACKUPDEST/directories ]; then
echo "$BACKUPDEST/directories does not exist, creating."
mkdir $BACKUPDEST/directories
fi
}
##
## If this VM is in our exempt array, set VM_EXEMPT to skip entirely.
##
function doCheckExempt
{
# iterate throught the array, if we get a match, set
# VM_EXEMPT to true
for check_vm in ${EXEMPTION_ARRAY[@]}; do
if [ "$check_vm" = "$NAME" ]; then
echo "$NAME is on the exception list, skipping."
VM_EXEMPT=true
fi
done
}
##
## Get current state and location of current VM.
##
function setVM
{
STATE=`$VMCMD -U $USER -P $PASS vmsvc/power.getstate $VMID |sed 1d`
DATASTORE=`$VMCMD -U $USER -P $PASS vmsvc/get.datastores $VMID |tr -s ' '|sed '2!d;s/^[[:alnum:]]* //;s/ //g'`
VMDIR=${LOC%/*}
}
##
## suspend a VM if its running, skip it if not
##
function suspendVM
{
echo $NAME state is currently: $STATE
# if its running, suspend it, otherwise, move on.
if [ "$STATE" = "Powered on" ]; then
echo "Suspending $NAME . . ."
$VMCMD -U $USER -P $PASS vmsvc/power.suspend $VMID
if [ $? == 0 ]; then
# track if it was running, so I can restart or not
VM_WAS_RUNNING=true
echo "$NAME Suspended - $(date)"
return
else
echo "$NAME DID NOT SUSPEND!! Exiting Program."
exit 0
fi
else
echo "$NAME was not suspended, not suspending - $(date)"
fi
}
##
## backup the VM
##
function doBackup
{
# synchronise (update) all data to the directories tree
echo "Backing up (rsync) $NAME to $BACKUPDEST/directories/$VMDIR"
rsync -ax --numeric-ids --delete $DATASTORE/$VMDIR/ $BACKUPDEST/directories/$VMDIR/
}
##
## Resume the VM if we it was running in the first place
##
function resumeVM
{
if [ "$VM_WAS_RUNNING" = "true" ]; then
# reset for next VM
VM_WAS_RUNNING=false
echo "Powering on $NAME . . ."
$VMCMD -U $USER -P $PASS vmsvc/power.on $VMID
if [ $? == 0 ]; then
echo "$NAME restarted - $(date)"
else
echo "$NAME FAILED TO RESUME!! Exiting Program."
exit 0
fi
else
echo "$NAME was not running, not resuming - $(date)"
fi
}
##
## tgz up the directory for a more compressed and mobile backup.
##
function doTar
{
fileName=backup_$NAME-`/bin/date +%G%m%d`.tgz
echo "taring up $NAME to $BACKUPDEST/archives/$fileName"
tar -cPpszf $BACKUPDEST/archives/$fileName $BACKUPDEST/directories/$VMDIR
}
##
## Clean up any tars that are older than DAYS_TO_KEEP_TAR
##
function doCleanTar
{
echo "Cleaning up tars older than $DAYS_TO_KEEP_TAR"
find $BACKUPDEST/archives -name "backup_$NAME*.tgz" -mtime $DAYS_TO_KEEP_TAR -exec rm -vf {} \;
#find $BACKUPDEST/archives -mtime +1 -exec rm -vf {} \;
}
##
## Main Loop, iterate through the VMs and handle them apprpriately
##
echo "-----------------------------------------------------"
echo "START"
echo "Host: $HOST"
echo "Date: $DATE"
echo "-----------------------------------------------------"
# make sure we have the appropriate directories for backups
doCheckDirectories
while read VMID NAME TYPE LOC OS VMVER; do
echo "ooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo"
setVM
echo "Current VM is $DATASTORE/$LOC"
# check to see if current vm should be exempted
doCheckExempt
# only back up if it is not on the exempt list
if [ "$VM_EXEMPT" = "false" ]; then
# suspend my VM if its running
suspendVM
sleep 30
# actually do the directory backup
doBackup
sleep 5
# resume the VM if it was running to begin with
resumeVM
sleep 5
# tar it up
doTar
sleep 5
# and finally, clean up my old tars
doCleanTar
sleep 5
fi
# reset for next vm
VM_EXEMPT=false
done < <($VMCMD -U $USER -P $PASS vmsvc/getallvms |sed 1d)
echo "-----------------------------------------------------"
echo "FINISH"
echo "Host: $HOST"
echo "Date: $(date)"
echo "-----------------------------------------------------"
Previous Script
This older script had problems:
#! /bin/bash
##
## Change the information below
##
USER=n2o
PASS=xxxx
BACKUPDEST=/home/n2o/backups/vm-backup
DAYS_TO_KEEP_TAR=3
## include any VMs in this array that you do NOT want backed up. Use
## the directory name.
EXEMPTION_ARRAY=( None )
## Do not modify anything below this line
HOST=$(hostname)
DATE=$(date)
VMCMD=vmware-vim-cmd
VM_WAS_RUNNING=false
VM_EXEMPT=false
##
## Create the backup directories if they do not exist
##
function doCheckDirectories
{
## if the archives directory does not exist, create it
if [ ! -d $BACKUPDEST/archives ]; then
echo "$BACKUPDEST/archives does not exist, creating."
mkdir $BACKUPDEST/archives
fi
## if the directories directory does not exist, create it
if [ ! -d $BACKUPDEST/directories ]; then
echo "$BACKUPDEST/directories does not exist, creating."
mkdir $BACKUPDEST/directories
fi
}
##
## If this VM is in our exempt array, set VM_EXEMPT to skip entirely.
##
function doCheckExempt
{
# iterate throught the array, if we get a match, set
# VM_EXEMPT to true
for check_vm in ${EXEMPTION_ARRAY[@]}; do
if [ "$check_vm" = "$NAME" ]; then
echo "$NAME is on the exception list, skipping."
VM_EXEMPT=true
fi
done
}
##
## Get current state and location of current VM.
##
function setVM
{
STATE=`$VMCMD -U $USER -P $PASS vmsvc/power.getstate $VMID |sed 1d`
DATASTORE=`$VMCMD -U $USER -P $PASS vmsvc/get.datastores $VMID |tr -s ' '|sed '2!d;s/^[[:alnum:]]* //;s/ //g'`
VMDIR=${LOC%/*}
}
##
## suspend a VM if its running, skip it if not
##
function suspendVM
{
echo $NAME state is currently: $STATE
# if its running, suspend it, otherwise, move on.
if [ "$STATE" = "Powered on" ]; then
echo "Suspending $NAME . . ."
$VMCMD -U $USER -P $PASS vmsvc/power.suspend $VMID
if [ $? == 0 ]; then
# track if it was running, so I can restart or not
VM_WAS_RUNNING=true
echo "$NAME Suspended - $(date)"
return
else
echo "$NAME DID NOT SUSPEND!! Exiting Program."
exit 0
fi
else
echo "$NAME was not suspended, not suspending - $(date)"
fi
}
##
## backup the VM
##
function doBackup
{
# synchronise (update) all data to the directories tree
echo "Backing up (rsync) $NAME to $BACKUPDEST/directories/$VMDIR"
rsync -ax --numeric-ids --delete $DATASTORE/$VMDIR/ $BACKUPDEST/directories/$VMDIR/
}
##
## Resume the VM if we it was running in the first place
##
function resumeVM
{
if [ "$VM_WAS_RUNNING" = "true" ]; then
# reset for next VM
VM_WAS_RUNNING=false
echo "Powering on $NAME . . ."
$VMCMD -U $USER -P $PASS vmsvc/power.on $VMID
if [ $? == 0 ]; then
echo "$NAME restarted - $(date)"
else
echo "$NAME FAILED TO RESUME!! Exiting Program."
exit 0
fi
else
echo "$NAME was not running, not resuming - $(date)"
fi
}
##
## tgz up the directory for a more compressed and mobile backup.
##
function doTar
{
fileName=backup_$NAME-`/bin/date +%G%m%d`.tgz
echo "taring up $NAME to $BACKUPDEST/archives/$fileName"
tar -cPpszf $BACKUPDEST/archives/$fileName $BACKUPDEST/directories/$VMDIR
}
##
## Clean up any tars that are older than DAYS_TO_KEEP_TAR
##
function doCleanTar
{
echo "Cleaning up tars older than $DAYS_TO_KEEP_TAR"
find $BACKUPDEST/archives -name "backup_$NAME*.tgz" -mtime $DAYS_TO_KEEP_TAR -exec rm -vf {} \;
#find $BACKUPDEST/archives -mtime +1 -exec rm -vf {} \;
}
##
## Main Loop, iterate through the VMs and handle them apprpriately
##
echo "-----------------------------------------------------"
echo "START"
echo "Host: $HOST"
echo "Date: $DATE"
echo "-----------------------------------------------------"
# make sure we have the appropriate directories for backups
doCheckDirectories
while read VMID NAME TYPE LOC OS VMVER; do
echo "ooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo"
setVM
echo "Current VM is $DATASTORE/$LOC"
# check to see if current vm should be exempted
doCheckExempt
# only back up if it is not on the exempt list
if [ "$VM_EXEMPT" = "false" ]; then
# suspend my VM if its running
suspendVM
sleep 30
# actually do the directory backup
doBackup
sleep 5
# resume the VM if it was running to begin with
resumeVM
sleep 5
# tar it up
doTar
sleep 5
# and finally, clean up my old tars
doCleanTar
sleep 5
fi
# reset for next vm
VM_EXEMPT=false
done < <($VMCMD -U $USER -P $PASS vmsvc/getallvms |sed 1d)
echo "-----------------------------------------------------"
echo "FINISH"
echo "Host: $HOST"
echo "Date: $(date)"
echo "-----------------------------------------------------"