Linux

Adding a New Drive #

In this guide, we’ll add a new disk, and format it for use. This guide makes assumptions about drive lettering and paths, ensure you’re running things where you want to.

Determine drive name and logical size.

fdisk -l

Partition drive using fdisk

fdisk /dev/sdc

# Common commands

n – Create partition
p – print partition table
d – delete a partition
q – exit without saving the changes
w – write the changes and exit.

Create Partition using whole Block Device, defaults are fine

...

Create Swap #

In this guide, we’ll create a swap file on CentOS.

This guide will provide steps on the quickest way to create a swap file on CentOS, should work on both CentOS 7, 8 and Stream. Before proceeding with this tutorial, check if your CentOS installation already has swap enabled by typing:

sudo swapon --show

Create file

sudo dd if=/dev/zero of=/swapfile bs=1024 count=1048576

Lock to root perms

sudo chmod 600 /swapfile

Make Swap and enable it

sudo mkswap /swapfile
sudo swapon /swapfile

Persist on boot

sudo vi /etc/fstab

/swapfile swap swap defaults 0 0

Change swappiness

vi /etc/sysctl.conf 
vm.swappiness=10

Extend a Disk

December 16, 2024

Guide

Linux, Guide

Extend a Disk #

In this guide, we’ll expand existing disks, using GParted, as well as fdisk, including partition expansions.

Extending an LVM partition with GParted #

Follow guide at own risk, resizing disks comes with risk, make sure you have backups. This guide assumes paths, make sure you’re running commands agains the correct drives/paths.

Grow disk in Hypervisor
Use Gparted to increase logical volume size
Run vgdisplay - find the “VG Name”, in my sitation it’s d0
Extend the LVM volume

lvextend -l +100%FREE /dev/d0/root

expand the file system, either using resize2fs or xfx_growfs if using centOS and XFS This

xfs_growfs /dev/d0/root

Or this depending on FS type

...

Htaccess

December 16, 2024

Guide

Linux, Guide

Htaccess #

I’ve collected some useful and some not so useful modifers that go in a htaccess file. These were made specifically for LiteSpeed webserver, which shares a lot of the same code so it should be mostly compatbile.

Force HTTPS #

A generic rewrite to alwasy redirect a http request to https

RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]

Htaccess Redirect from old domain to new domain #

A standard 301 reidrect, basepath / to a new domain

...