[HOWTO] Run apache server with www directory in a different server

sudo service apache2 stop

ssh fs_username@fs_ip_or_domain_name

exit

ssh-keygen

scp ~/.ssh/id_rsa/id_rsa.pub fs_username@fs_ip_or_domain_name:

ssh fs_username@fs_ip_or_domain_name

cat id_rsa.pub >>~/.ssh/authroized_keys
rm id_rsa.pub

ssh fs_username@fs_ip_or_domain_name

exit

sudo gpasswd -a ws_username fuse

sshfs -o idmap=ws_username fs_username@fs_ip_or_domain_name:/home/fs_username/webprojects  /home/ws_user/www

ls /home/ws_username/www

fusermount -u /home/ws_username/www

sshfs#fs_username@fs_ip_or_domain_name:/home/fs_username/webprojects /home/ws_username/www fuse fsname=sshfs#fs_username@fs_ip_or_domain_name:/home/fs_username/webprojects,users,allow_other,uid=1000,gid=104,comment=sshfs,exec,reconnect,transform_symlinks,BatchMode=yes,noauto 0 0

id

user_allow_other

mount /home/ws_username/www
ls /home/ws_username/www
umount /home/ws_username/www

#!/bin/sh
 
## http://ubuntuforums.org/showthread.php?t=430312
## The script will attempt to mount any fstab entry with an option
## "...,comment=$SELECTED_STRING,..."
## Use this to select specific sshfs mounts rather than all of them.
SELECTED_STRING="sshfs"
 
# Not for loopback
[ "$IFACE" != "lo" ] || exit 0
 
## define a number of useful functions
 
## returns true if input contains nothing but the digits 0-9, false otherwise
## so realy, more like isa_positive_integer 
isa_number () {
    ! echo $1 | egrep -q '[^0-9]'
    return $?
}
 
## returns true if the given uid or username is that of the current user
am_i () {
	[ "$1" = "`id -u`" ] || [ "$1" = "`id -un`" ]
}
 
## takes a username or uid and finds it in /etc/passwd
## echoes the name and returns true on success
## echoes nothing and returns false on failure 
user_from_uid () {
    if isa_number "$1"
    then
		# look for the corresponding name in /etc/passwd
    	local IFS=":"
    	while read name x uid the_rest
    	do
        	if [ "$1" = "$uid" ]
			then 
				echo "$name"
				return 0
			fi
    	done </etc/passwd
    else
    	# look for the username in /etc/passwd
    	if grep -q "^${1}:" /etc/passwd
    	then
    		echo "$1"
    		return 0
    	fi
    fi
    # if nothing was found, return false
   	return 1
}
 
## Parses a string of comma-separated fstab options and finds out the 
## username/uid assigned within them. 
## echoes the found username/uid and returns true if found
## echoes "root" and returns false if none found
uid_from_fs_opts () {
	local uid=`echo $1 | egrep -o 'uid=[^,]+'`
	if [ -z "$uid" ]; then
		# no uid was specified, so default is root
		echo "root"
		return 1
	else
		# delete the "uid=" at the beginning
		uid_length=`expr length $uid - 3`
		uid=`expr substr $uid 5 $uid_length`
		echo $uid
		return 0
	fi
}
 
# unmount all shares first
sh "/etc/network/if-down.d/umountsshfs"
 
while read fs mp type opts dump pass extra
do
    # check validity of line
    if [ -z "$pass" -o -n "$extra" -o "`expr substr ${fs}x 1 1`" = "#" ]; 
    then
        # line is invalid or a comment, so skip it
        continue
 
    # check if the line is a selected line
    elif echo $opts | grep -q "comment=$SELECTED_STRING"; then
 
    	# get the uid of the mount
        mp_uid=`uid_from_fs_opts $opts`
 
        if am_i "$mp_uid"; then
			# current user owns the mount, so mount it normally
			{ sh -c "mount $mp" && 
				echo "$mp mounted as current user (`id -un`)" || 
				echo "$mp failed to mount as current user (`id -un`)"; 
			} &
		elif am_i root; then
			# running as root, so sudo mount as user
			if isa_number "$mp_uid"; then
				# sudo wants a "#" sign icon front of a numeric uid
				mp_uid="#$mp_uid"
			fi 
			{ sudo -u "$mp_uid" sh -c "mount $mp" && 
				echo "$mp mounted as $mp_uid" || 
				echo "$mp failed to mount as $mp_uid"; 
			} &
		else
			# otherwise, don't try to mount another user's mount point
			echo "Not attempting to mount $mp as other user $mp_uid"
		fi
    fi
    # if not an sshfs line, do nothing
done </etc/fstab
 
wait

#!/bin/bash
 
# Not for loopback!
[ "$IFACE" != "lo" ] || exit 0
 
# comment this for testing
exec 1>/dev/null # squelch output for non-interactive
 
# umount all sshfs mounts
mounted=`grep 'fuse.sshfs\|sshfs#' /etc/mtab | awk '{ print $2 }'`
[ -n "$mounted" ] && { for mount in $mounted; do umount -l $mount; done; }

sudo chmod 755 /etc/network/if-up.d/mountsshfs /etc/network/if-down.d/umountsshfs
sudo chown root:root /etc/network/if-up.d/mountsshfs /etc/network/if-down.d/umountsshfs

sudo ifdown eth0   #disconnect

sudo ifup eth0   #connect

ls /home/ws_user/www #should list files

sudo ifdown eth0

ls /home/ws_user/www #should not list files

sudo ifup eth0   #connect

sudo service apache2 restart