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Month: February 2021

Creating LVM (Logical Volume Management) in Linux

In this tutorial, I’ll discuss about the manner of creating LVM disk in linux. LVM are used for volume management which make manage disk become easier. When you need to more space in a volume disk, you can be allocate to these logical volume and you can resize that space. On the LVM concept you

How To Divide Subnet/IP Address using VLSM method

In this tutorial, I’ll discuss about how to divide a network segment or ip with the vlsm method.  VLSM (Varialbe Length Subnet Mask) that are method to divide one ip network to some network segment with different needs and uses on different number of client for each network. for the example on your network, you’re

How To add/create new partition disk and mounting partition in linux

In this tutorial I’ll discuss about how to adding or create new partition disk in linux. on the case when we will to add new hardisk/ssd in system we need to create the partition and setup for partition type in system so that it can be used.  The following are step by step to doing

How Add/Creata new partition swap on linux

In this tutorial, I’ll explain to you about how to add or create new partition swap on linux os. swap are using for supplementary RAM space by holding inactive pages in memory  are called virtual memory. The following are step by step for create new new partition swap : In this tutotial I’ve add new

How to fix error booting to emergency mode in linux redhat/centos

When you using the linux system, probably you’re ever experience error booting and as automatically enter in the emergency mode.  those issues could occur when you as accidentally wrong setup for mounting partition in /etc/fstab so that error resulting when boot as shown in image bellow : for fix the problem,  if you has already

Resetting root password in linux Centos/Redhat

When you using linux redhat or centos operating system and you forgot the user password, you can reset those user password through the root system. But How if you forgot the root password ? the only ways you can reset the root password through emergency mode. In this tutorial I’ll discuss to you about how

Configure custom http directory for webserver in linux CentOS/Redhat

In this tutorial I’ll discuss about how to configuratin custom directory for web server in linux centos/redhat. when you configure webserver, the default directory are contained on /var/www/html. you can setup custom directory if you do not want the webserver directory have in /var/www/html. But all process and files in linux centos/redhat are labeled by

Configuration SElinux Mode in linux centos/redhat

When you do configure system in linux centos or redhat, it’s have the SElinux that are provided the critical security purpose for the system. The Selinux will be permit or denying access to files or other content  significantly more than the user permissions.  For the example if you configure the http web server with custom

How To Optimize System performance in Linux Centos/Redhat

Hello everyone, in this tutorial I’ll discuss about how to optimize system performance in linux centos or redhat.  we can optimize system with adjusting various device based on use of workload with do configure tunning profile in your system. Installing package : # yum install tuned Enable tuned package : # systemctl enable –now tuned

How To Configure ACL (Access Control List) in Linux Centos/RedHat

When you using linux system with single user, the standard linux permission may be enough for use in working daily. But if the linux system is used by multiple user, you must have a right permission for securely access share directories or files.  For that, you can use ACL (Access Control List) in your system