“Transparent Hugepages” is a Linux kernel feature intended to improve performance by making more efficient use of your processor’s memory-mapping hardware. It is enabled (“enabled=always”) by default in most Linux… Read more »
When we go to delete a lun that is no longer mapped, we may get this error sdXX: couldn’t get asymmetric access stateAfter unmapping the LUN from the SAN storage… Read more »
The Web Server is a crucial part of web-based applications. Apache Web Server is often placed at the edge of the network hence it becomes one of the most vulnerable… Read more »
Identify and print processes using swap space to get a better understanding of the Linux operating system. Display processes using swap space Use the following command to simply display processes… Read more »
Today we see the list of IP set types supported by firewalld, enter the following command as root. ~]# firewall-cmd –get-ipset-types hash:ip hash:ip,mark hash:ip,port hash:ip,port,ip hash:ip,port,net hash:mac hash:net hash:net,iface hash:net,net… Read more »
Hi there! I’d like to show you how to disable Transparent Huge Pages on CentOS/RedHat 7. First question you might ask – why do you even want to disable Transparent… Read more »
In this post, we’ll discuss tuning Linux for MongoDB deployments. By far the most common operating system you’ll see MongoDB running on is Linux 2.6,3.x. and 4.x (only Oracle Linux… Read more »
A Bash shell script which uses ipset and iptables to ban a large number of IP addresses published in IP blacklists. ipset uses a hashtable to store/fetch IP addresses and… Read more »