Category Archives: Redhat / CEntOS / Oracle Linux

How to free PHP-fpm Memory at Server

  Often when you are running PHP with any web server (Apache or Nginx), the FastCGI process manager eats up a lot of your RAM, by forking multiple subprocesses for every request, which in turn leads to memory leakage. To avert this, it is desirable to schedule a shell script and reduce this memory leakage. Save the below command as

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Process Management in Linux

Process Types Before we start talking about Linux process management, we should review process types. There are four common types of processes: Parent process Child process Orphan Process Daemon Process Zombie Process Parent process is a process which runs the fork() system call. All processes except process 0 have one parent process. Child process is created by a parent process.

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How To Patch and Protect Linux Kernel Stack Clash Vulnerability CVE-2017-1000364 [ 19/June/2017 ]

Avery serious security problem has been found in the Linux kernel called “The Stack Clash.” It can be exploited by attackers to corrupt memory and execute arbitrary code. An attacker could leverage this with another vulnerability to execute arbitrary code and gain administrative/root account privileges. How do I fix this problem on Linux? The Qualys Research Labs discovered various problems

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