Hi,
I use a script to compress images (inspired by https://forums.fogproject.org/topic/5141/compression-change/6) and display configuration of my FOG ( using https://forums.fogproject.org/topic/4581/let-s-make-scripts).
I have terminated the compression of images present where I launch the script (to compress an image you have to launch the script on the master node of the group where the image is stored) :
- Backup old image
- Compress new image
- Update database
- Remove backup
In futur release I want to add :
- A progress bar on pigz (using pv maybe) >> Done
- Checking if pigz is installed
- function to move image in another folder/storage.
Script (you need to have pigz installed) :
#!/bin/bash
##############################################
# Tools for FOG
# Last change 2015-06-15
#
# /!\ pigz and pv are required /!\
#
# Ch3i
##############################################
##############################################
# Functions
##############################################
FUNC_TOP(){
echo -e "\033[42m#########################################################
# FOG Images tools #
#########################################################\033[0m\n\n"
}
##############################################
# Get FOG configuration
##############################################
source /opt/fog/.fogsettings
snmysqlhost=${snmysqlhost#p:}
logfile="FOGtroubleshoot.log"
clear
FUNC_TOP
echo -e "/!\ pigz and pv are required for image compression /!\ \n"
echo "Press Enter to continue..."; read
clear
FUNC_TOP
echo -e "1 - Change image compression
2 - Export configuration in `pwd`/$logfile
3 - Exit\n"
read -e fog_operation
clear
FUNC_TOP
if [ "$fog_operation" == "1" ]
then
##############################################
# List all images (id/name/compression)
##############################################
echo -e "Choose the image to resize\n"
echo -e "|ID\t| Image name (compression)"
echo "------------------------------------------"
# Display all images >> mysql --host="$snmysqlhost" --user="$snmysqluser" --password="$snmysqlpass" "fog" -Bse "SELECT images.imageID, images.imageName, images.imageCompress FROM images ORDER BY imageID" | while read image_id image_name image_compression
mysql --host="$snmysqlhost" --user="$snmysqluser" --password="$snmysqlpass" "fog" -Bse "SELECT images.imageID, images.imageName, images.imageCompress FROM images INNER JOIN imageGroupAssoc ON images.imageID = imageGroupAssoc.igaImageID INNER JOIN nfsGroups ON imageGroupAssoc.igaStorageGroupID = nfsGroups.ngID INNER JOIN nfsGroupMembers ON nfsGroupMembers.ngmGroupID = nfsGroups.ngID WHERE ngmHostname = '$ipaddress' ORDER BY imageID" | while read image_id image_name image_compression #Display images on the node where the script is running
do
echo -e "|$image_id\t| $image_name ($image_compression)"
echo "------------------------------------------"
done
echo -en "\nEnter the Image ID : "; read image_id_selected
echo -n "Enter the compression level (0-9) : "; read image_compression_selected
##############################################
# Get image selected informations
##############################################
image_name_selected=$(mysql --host="$snmysqlhost" --user="$snmysqluser" --password="$snmysqlpass" "fog" -Bse "SELECT images.imageName FROM images WHERE images.imageID='$image_id_selected'")
image_compression_original=$(mysql --host="$snmysqlhost" --user="$snmysqluser" --password="$snmysqlpass" "fog" -Bse "SELECT images.imageCompress FROM images WHERE images.imageID='$image_id_selected'")
image_path=$(mysql --host="$snmysqlhost" --user="$snmysqluser" --password="$snmysqlpass" "fog" -Bse "SELECT images.ImagePath FROM images WHERE images.imageID='$image_id_selected'")
if [ "$image_compression_selected" -ge 0 -a "$image_compression_selected" -le 9 -a "$image_name_selected" != "" ]
then
echo -n "Do you want to change compression of $image_name_selected from $image_compression_original to $image_compression_selected ? (y/n) : "; read go_compression
else
echo "error"
echo "Exiting..."
sleep 1
clear
exit
fi
##############################################
# Resize the image and update database
##############################################
if [ "$go_compression" = "Y" -o "$go_compression" = "y" ]
then
clear
FUNC_TOP
echo -e "Changing compression of $image_name_selected from $image_compression_original to $image_compression_selected : \n"
echo -n "Backup img...In progress"
for f in "$storageLocation/$image_path/"*.img; do mv "$f" "${f%.img}-bak.img"; done
echo -e "\033[1K"
echo "Backup img...Done"
echo "Compress new img...In progress"
for f in "$storageLocation/$image_path/"*bak.img; do pigz -d -c $f | pv $f | pigz -"$image_compression_selected" > "${f%-bak.img}.img"; done
echo -e "\033[1K"
echo "Compress new img...Done"
echo -n "Remove backups...In progress"
rm "$storageLocation/$image_path/"*bak.img
chmod 777 -R "$storageLocation/$image_path/"
echo -e "\033[1K"
echo "Remove backups...Done"
echo -n "Update database...In progress"
mysql --host="$snmysqlhost" --user="$snmysqluser" --password="$snmysqlpass" "fog" -Bse "UPDATE images SET images.imageCompress='$image_compression_selected' WHERE images.imageID='$image_id_selected'"
echo -e "\033[1K"
echo "Update database...Done"
echo "Exiting..."
sleep 1
exit
else
echo "Exiting..."
sleep 1
clear
exit
fi
elif [ "$fog_operation" == "2" ]
then
##############################################
# Export Configuration
##############################################
(( EUID != 0 )) && exec sudo -- "$0" "$@"
linuxReleaseName=`lsb_release -a 2> /dev/null | grep "Distributor ID" | awk '{print $3,$4,$5,$6,$7,$8,$9}' | tr -d " "`;
if [ -z "$linuxReleaseName" ]; then
# Fall back incase lsb_release does not exist / fails - use /etc/issue over /etc/*release*
linuxReleaseName=`cat /etc/issue /etc/*release* 2>/dev/null | head -n1 | awk '{print $1}'`;
fi
#logfile="FOGtroubleshoot.log"
# Delete logfile if it exists
if [ -f $logfile ]; then
rm $logfile
fi
#argument 1 is the logfile name
getStatus() {
i=1;
if [ ! -z "`echo $linuxReleaseName | grep -Ei 'Fedora|Redhat|CentOS|Mageia'`" ]; then
RHVER=`rpm -qa | grep release | xargs rpm -q --queryformat '%{VERSION}' | cut -c -1`;
fi
if [ "`echo $RHVER`" -gt 6 ]; then
services="xinetd rpcbind nfs-server vsftpd firewalld FOGMulticastManager FOGSnapinReplicator FOGImageReplicator FOGScheduler";
nicename="TFTP RPCBind NFS FTP Firewall FOGMulticastManager FOGSnapinReplicator FOGImageReplicator FOGScheduler";
for service in $services; do
niceval=`echo $nicename|awk '{print $'$i'}' |sed 's/_/ /'`;
echo "----------------------$niceval status below" >> $1
systemctl status $service >> $1;
i=`expr $i '+' 1`;
done
else
services="xinetd rpcbind nfs vsftpd iptables FOGMulticastManager FOGSnapinReplicator FOGImageReplicator FOGScheduler";
nicename="TFTP RPCBind NFS FTP Firewall FOGMulticastManager FOGSnapinReplicator FOGImageReplicator FOGScheduler";
for service in $services; do
niceval=`echo $nicename|awk '{print $'$i'}' |sed 's/_/ /'`;
echo "----------------------$niceval status below" >> $1
service $service status >> $1;
i=`expr $i '+' 1`;
done
fi
}
#argument 1 is the logfile name
getLogs() {
if [ ! -z "`echo $linuxReleaseName | grep -Ei 'Fedora|Redhat|CentOS|Mageia'`" ]; then
httploc='httpd';
httpsep='_';
else
httploc='apache2';
httpsep='.';
fi
logs="/var/log/foginstall.log /var/log/${httploc}/error${httpsep}log /var/log/${httploc}/access${httpsep}log";
nicename="Installation Apache_Error Apache_Access";
i=1;
for lfname in $logs; do
if [ -f "$lfname" ]; then
niceval=`echo $nicename|awk '{print $'$i'}' |sed 's/_/ /'`;
echo ----------------------$niceval log below >> $1;
tail -30 $lfname >> $1
fi
i=`expr $i '+' 1`;
done
}
#argument 1 is the logfile name
getConfs() {
conffiles="/etc/dhcp/dhcpd.conf /etc/dnsmasq.d/ltsp.conf /etc/xinetd.d/tftp /etc/vsftpd/vsftpd.conf /etc/rc.d/rc.local";
for confname in $conffiles; do
if [ -f "$confname" ]; then
echo "----------------------$confname file below" >> $1;
cat $confname >> $1;
fi
done
}
echo '----------------------'$linuxReleaseName' version below' >> $logfile
cat /etc/issue >> $logfile
if [ ! -z "`echo $linuxReleaseName | grep -Ei 'Fedora|Redhat|CentOS|Mageia'`" ]; then
echo '----------------------SELinux status below' >> $logfile;
sestatus >> $logfile
fi
echo '----------------------IP Configuration below' >> $logfile
ip addr >> $logfile
getStatus $logfile;
getLogs $logfile;
getConfs $logfile;
storageLocation="/images";
if [ -d "/opt/fog" -a -f "/opt/fog/.fogsettings" ]; then
. /opt/fog/.fogsettings;
fi
if [ -d "$storageLocation" ]; then
echo '----------------------Check for /images/.mntcheck' >> $logfile
ls $storageLocation -a |grep "mntcheck" >> $logfile
echo '----------------------Check for /images/dev/.mntcheck' >> $logfile
ls ${storageLocation}/dev -a |grep "mntcheck" >> $logfile
echo '----------------------/images & file permissions below' >> $logfile
ls -lR $storageLocation >> $logfile
fi
if [ -d "/tftpboot" ]; then
echo '----------------------/tftpboot & file permissions below' >> $logfile
ls -lR /tftpboot >> $logfile
fi
sed -i 's/$/
/g' $logfile
echo -n "Script Completed ";
date
echo "Your logfile can be found in `pwd`/$logfile";
echo "Exiting..."
sleep 1
exit
else
echo "Exiting..."
sleep 1
clear
exit
fi
It’s not perfect but functional, I used it without problem, if you want to test it make a backup of the target image before 
Ch3i.
