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I have found following error in few of my cpanel servers after a recent cpanel update:

[quote]
Fantastico is not installed at the default location
/usr/local/cpanel/3rdparty/fantastico. Either move the Fantastico
directory from it’s current location to
/usr/local/cpanel/3rdparty/fantastico OR enable ioncube loaders in WHM
-> Tweak settings.
[/quote]

I have researched a lot by searching google and browsing netenberg. But couldn’t really find any solution. Later on i have found one thing that with the latest PHP Compile, fantastico is not being able to load runtime ioncube. To fix this you need to add the ioncube zend_extension line on the internal cpanel php compile. The easiest way to fix this and update the internal cpanel php is running the following command:

/scripts/makecpphp

As soon as it completes re-building your internal cpanel php, your fantastico should work great back again

I think my estimation was really wrong :-S , No php cacher works perfectly with the suphp environment Its really very much disappointing Xcache would work, but for some photo galleries and some kind of sites which needs to system process will get locked with xcache. Eaccelerator doesn’t work at all with suphp. I m thinking to try apc, though i m really not interested in running apc as i havent heard good regarding its transition intelligence. But finally i have to say, if you are running your server with suphp or phpsuexec then you may need to forget using a php cacher with it. Even in some cases it will conflict with suhosin too lol!

This is really the most handy tool for mysql databases. A built in mysqldump can be used via shell to dump mysql databases within a few minutes. Sometimes dumping backups using phpmyadmin is too hazardous. So it’s really a necessary tool and fast too. I have listed this commands and i believe this should be useful to lots of system admins

Taking Database Backup

mysqldump -uuser -pmysqluserpassword database_name > database_name.sql

Restoring a Database

mysql -uuser -pmysqluserpassword database_name < database_name.sql

Here, you need to replace the user with the proper database user who has access to that specific database and the mysqluserpassword directs the password of that specific user. Here, one important thing is database_name.sql file can be replaced with the location of the sql file, suppose if you want to save it or retrieve from /home/backup then you can put /home/backup/database_name.sql to do that.

DDOS has become a real headache for me in these days. Everyday, around 40% of the load with a good amount of bandwidth is being licked by these lame attackers. From starting i m using the ddos deflate a well known ddos protector to all the server admin. This ddos protector uses “netstat” to find out the connections on the server and ban them for a period of time using a firewall automatically. Whats the main disadvantage of this protector is its not a real time protection, and for running netstat it creates a good amount of load on the server. More Importantly, this ddos protector just bans the ip at a certain ideatically. In lots of cases you may find this that, ddos deflate has banned someone who is not really doing ddos on your server. So if you are trying to fetch for a best ddos protector for a loaded server, specifically for a hosting service, then definitely ddos deflate wont be a good choice without any modification.

When a real time syn flood protector concerns, then the first one comes, is Cisco Guard or that typo firewall software. They uses some artificial techniques to determine the syn flooding and filter the requests. Its good, but in lots of cases when more pure attacks are in effect, it wont perform the best too. Though, it may reduce the load on the server by filtering a good amount of ddos traffic. But i have found that, most of the DC don’t provide this service to buy. Its only available to use for 24 hours so. Moreover, for not having it available in market to buy directly from vendor, no individual businessman going to have it by paying too.

As runtime filtering is not possible without a big artificial intelligence, thats why i m really thinking to modify the ddos deflate to its best. According to my inspection certain modification on this script can make it more perfect and better in lots of ways. But one of the disadvantage of taking high load will kept alive as we cant proceed without checking or analysing the traffic details. Though, the modified ddos deflate should work fine in lots of cases when loaded dedicated boxes concern. My main motive is to make the protector ban the IPs who are estabilished means alive in the network and basically using http protocol. I m also working on it to make it more simple and working faster in the network. I will definitely be posting the download when i m done with the project and tested it in my network It should be more perfect comparing from both side i explained

PHP Cachers like Eaccelerator, Xcache, APC are really worthy to give a try. For highly loaded server with around 10+ load constantly, and running php as the major scripting, then definitely a cacher can lowers the load to 1-2. I usually do lots of proxy hosting on one of my server. From last month i was having over 10 load constantly on the server. Usually it covers up the 30-40 Though, having it highly optimized, i hardly face any sort of speed or crashing problem. Though the response time for that server was around .05 seconds per KB, which is slow comparing with other web proxies in the world. One of my made a complaint on this issue that the loading time is comparatively slow and needs to be fixed asap. In the meantime i was running php with CGI instead of Apache to make it more secure and perfect. Though today i made the change from Cgi to apache, so that i can use Eaccelerator. The major reason of choosing eaccelerator is it was installed previously though it wasn’t working as it doesn’t support threaded mode. I knew that Xcache is better than eaccelerator, but before installing xcache, i was waiting for a test with a php cacher. And voila, after the move, i can see my load lowers to only 2-7 now which was around 50-75 few minutes ago. Though, i have made some changes to take it effect, as i got 6 GB RAM on that server, so i made shm size to 256 MB. Caches work from hard drive, though it needs some extra RAM allocation to work with the transition, thats why most of the cases, people love to keep the shm size lower. Finally i found it is caching around 4000 scripts in the server and made the sites more faster keeping the load lower.

Note: When you have around 40-50 load active, then its better to kill all the http connections and then wait for having the load lower than 5. After that start the apache, it will start caching your php scripts. After a few minutes, you should see your load is not fluqtuating as it was doing before One more important thing is when, cacher has done with its memory size and if you shm size is quite big, then better not to restart the apache so frequently. Cause with a apache restart it will clear its cache database and start caching back again. In my case, as i was using the compression level 9, it was creating extra pressure on the server while dumping the caches

I have to say, Xcache works very perfect for bulletin boards. I was using eaccelerator for around 4 weeks now, and the performance from eaccelerator was quite good. But as eaccelerator doesn’t work with suphp, i converted my php caching system to Xcache. Now i can see, Xcache works the best. It reducing a forum load with around 150 users online to 3.5% cpu While it was taking over 10% cpu a few hours ago. I have to say, xcache works perfect for forums. Though, i haven’t got enough profit for wordpress blogs by using xcache. I have seen a plugin for wordpress where it says, xcache cant prove the highest on general wordpress installations. Some caching objects needs to pass and wordpress needs to be made on a way so that it uses the xcache on its best. I m still testing this module and expecting a great result