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Category Archives: News - Page 4
php form field – safty
Posted by moti
on July 12, 2009
No comments
control ip access to apache via .htaccess
Posted by moti
on July 6, 2009
No comments
1. Allow only specific ip address :
order allow,deny
deny from all
allow from 192.168.1.1
allow from 192.168.1.2
2. Block specific ip address :
order deny,allow
allow from all
deny from 192.168.1.1
deny from 192.168.1.2
you can substitute ip for :
subnet -> deny from 192.168.1.0/24
subnet wild cards -> deny from 192.168.*.*
domain -> deny from domain\.com
you can also combine ip’s on one line:
deny from 192.168.1.1 192.168.2.1
Leopard keeps warning : is an application which was downloaded from the internet. Are you sure you want to open it?
Posted by moti
on April 27, 2009
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Full thread I found is here , below is the short version on how to remove the extended attributes and possible ACL’s. Leopard adds an ACL called com.apple.quarantine to your download apps :
1. Open the Terminal
2. List the attributes of the app you are having issue with ( in this example , skype )
mac: moti$ xattr -l /Applications/Skype.app
com.apple.quarantine: 0000;49d521d9;Firefox;|org.mozilla.firefox
Remove the “com.apple.quatantine” attribute if it is defined
sudo xattr -d com.apple.quarantine /Applications/Skype.app
3. Check the attributes again
mac: moti$ xattr -l /Applications/Skype.app
mac: moti$com.apple.quarantine should not be listed.
DRBD , Centos and unmount nfs resources
Posted by moti
on April 20, 2009
1 comment
I have recently built a DRBD + Linux HA NFS cluster , part of the structure was to create a drbd disk resource and mount it on /var/lib/nfs. This allows to switch nfs over to the secondary node without getting “stale nfs handle” errors. Heartbeat was having a hardtime doing a clean umount of the file system and ended up rebooting the machine.
Apr 20 06:47:07 fs Filesystem[9823]: [9887]: INFO: No processes on /var/lib/nfs were signalled
Apr 20 06:47:08 fs Filesystem[9823]: [9890]: ERROR: Couldn’t unmount /var/lib/nfs; trying cleanup with SIGKILL
After some poking around the systems It looked like nfs was not showtdown cleanly. looking into the rc script i changed the signal from 2 to 9
From :
stop)
# Stop daemons.
echo -n $”Shutting down NFS mountd: ”
killproc rpc.mountd
echo
echo -n $”Shutting down NFS daemon: ”
killproc nfsd -2
echo
To :
stop)
# Stop daemons.
echo -n $”Shutting down NFS mountd: ”
killproc rpc.mountd
echo
echo -n $”Shutting down NFS daemon: ”
killproc nfsd -9
echo
and now, all is well 
Apr 20 06:52:49 fs Filesystem[8696]: [8754]: INFO: unmounted /var/lib/nfs successfully
searching the web shows this is a somewhat known issue