I do often monitor server apache status as most often reason of server outages is Apache overload. Some web hosting panels are sending notifications when your server is down; some web services like Alertra.com provide you with different notification options and one of my hosters has his internal monitoring service. But what to do if you need to… Read More »
Let’s say we need to randomize the time to run a cronjob. We need to run a script once a day but the time should be different each day. How should we proceed? I’ve got some solutions for this. The first one is a little stupid, but it will work if you have your own dedicated server. If… Read More »
Today my post will be quite short: a simple yet useful keyboard shortcut for mc. Often you need to select all files in a Midnight Commander panel, just like using Ctrl+A in Windows. Mignight commander has another shortcut, that uses mask and allows you to select all the files in a mc panel. Here is your initial view:… Read More »
Today I’m just sharing a link: I don’t think I can explain this better than IBM guys did. These three acrticles contain a comprehensive guide for your LAMP system optimization. Here is the first one, that contains general linux settings for perfect LAMP config. The second one describes how to fine tune Apache and PHP and finally the… Read More »
Today when I logged into one of my ervers I was unable to create a file as I was told that No space was left on device. I checked my discs for free space and found that free space exists on all of my partitions, that’s why I got stuck. I was able to modify my existing files… Read More »
A system administrator often needs to deal with file ownership change. This is often related to the ownership of the files created by daemons. Often users don’t have access to the file created by apache. What to do if you need to change ownership of a group of files? You must be root to perform this operation. The… Read More »
Sometimes you should prevent outgoing connections from your server. The best way to do it is to use Linux system options, especially ipchains and iptables. I will show you how to do it using iptables, as this is the shortest way I know. In order to block outgoing connections from your server to one IP issue the following… Read More »
If you manage any script that creates files on the server, you might meet the prob;em that you cannot edit files created by this script. This is especially related to PHP scripts, that, for example, create some text files in a folder. When you try to open these files via your FTP client, you will most probably receive… Read More »
Often you need to run something from your directories without entering the full path to your executables. You may also like to customize some of your user settings, as you might know, .bashrc file allows you do do all this stuff. In order to add a directory to your command search path you need to do the following:… Read More »
