Tag: linux

Install Redis on Ubuntu 20.04

sudo apt install redis-server

Configure Redis

sudo nano /etc/redis/redis.conf

find the line specifying the supervised directive. By default, this line is set to no. However, to manage Redis as a service, set the supervised directive to systemd (Ubuntu’s init system).

Secure Redis

sudo nano /etc/redis/redis.conf

locate the requirepass directive under the SECURITY section and uncomment it (by removing #).Once you have uncommented the line, replace foobared with the password of your choice.

sudo systemctl restart redis.service

References
https://phoenixnap.com/kb/install-redis-on-ubuntu-20-04

Install NVIDIA 340.108 Driver on Ubuntu

Install NVIDIA proprietary drivers on Debian / Ubuntu / Linux Mint / LMDE and disable the nouveau driver

Make sure that you system is up-to-date and you are running latest kernel, also make sure that you don’t have any Debian / Ubuntu / Linux Mint / LMDE NVIDIA package installed

## Ubuntu / Debian / Linux Mint / LMDE ##
apt update

apt upgrade

## Debian and Linux Mint ##
apt autoremove $(dpkg -l nvidia-driver* |grep ii |awk '{print $2}')

## Ubuntu ##
apt autoremove $(dpkg -l xserver-xorg-video-nvidia* |grep ii |awk '{print $2}')

apt reinstall xserver-xorg-video-nouveau

Install needed dependencies

## Ubuntu / Debian / Linux Mint ##
apt install linux-headers-$(uname -r) gcc make acpid dkms libglvnd-core-dev libglvnd0 libglvnd-dev dracut wget patch libgtk2.0-0

Disable nouveau

Create or edit /etc/modprobe.d/blacklist.conf

Append ‘blacklist nouveau’

echo "blacklist nouveau" >> /etc/modprobe.d/blacklist.conf

Edit /etc/default/grub

Append ‘rd.driver.blacklist=nouveau’ to end of ‘GRUB_CMDLINE_LINUX=”…”‘.

## Example row on Debian ##
GRUB_CMDLINE_LINUX_DEFAULT="quiet rd.driver.blacklist=nouveau"

## OR with Ubuntu and Linux Mint ##
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash rd.driver.blacklist=nouveau"

Update grub2 conf

## BIOS and UEFI ##
update-grub2

Generate initramfs

## Backup old initramfs nouveau image ##
mv /boot/initrd.img-$(uname -r) /boot/initrd.img-$(uname -r)-nouveau
 
## Generate new initramfs image ##
dracut -q /boot/initrd.img-$(uname -r) $(uname -r)

Create new directory for inttf NVIDIA patcher

cd ~
mkdir NVIDIA
cd NVIDIA

Download / Update inttf NVIDIA patcher

wget -O inttf-nvidia-patcher.sh https://nvidia.if-not-true-then-false.com/patcher/inttf-nvidia-patcher.sh

Make inttf NVIDIA patcher executable

chmod +x inttf-nvidia-patcher.sh

Download and patch your drivers

./inttf-nvidia-patcher.sh -v 340.108

Reboot to runlevel 3

systemctl set-default multi-user.target

reboot

Run NVIDIA Binary

./NVIDIA-Linux-x86_64-340.108-patched-kernel-5.15.run
systemctl set-default graphical.target

reboot

References
https://www.if-not-true-then-false.com/2021/debian-ubuntu-linux-mint-nvidia-guide/
https://www.if-not-true-then-false.com/2020/inttf-nvidia-patcher/

Allow Incoming Connection from Specific IP Address or Subnet in UFW

Allow Incoming SSH from Specific IP Address or Subnet

sudo ufw allow from 15.15.15.0/24  to any port 22

sudo ufw allow from 15.15.15.65 to any port 22

Allow Incoming Rsync from Specific IP Address or Subnet

sudo ufw allow from 15.15.15.0/24 to any port 873

Allow All Incoming HTTP and HTTPS

sudo ufw allow proto tcp from any to any port 80,443

Allow MySQL from Specific IP Address or Subnet

sudo ufw allow from 15.15.15.0/24 to any port 3306

Allow MySQL to Specific Network Interface

sudo ufw allow in on eth1 to any port 3306

References
https://www.digitalocean.com/community/tutorials/ufw-essentials-common-firewall-rules-and-commands