SELinux allow non default SSH port
By default, SELinux only allows running SSH service on default port 22. For security, it is better to change the SSH port…
Linux
How to configure IPv6 on OVH AlmaLinux 8 server
First, find the network interface used by the server with ip a command. [root@15-204-47-122 ~]# ip a 1: lo: mtu 65536 qdisc…
OVH CentOS 7 server grub rescue prompt
On an OVH Cpanel server running CentOS 7, the server won’t boot. When accessing the server console using IPMI, I found the…
How to install docker on AlmaLinux 8
To install docker on AlmaLinux, run the following commands Install yum-utils Add docker repository Install Docker CE with Enable docker Start Docker…
How to Install ffmpeg static build
FFmpeg binary static build available for download from https://johnvansickle.com/ffmpeg/ To install ffmpeg static build, run cd /usr/local/src wget https://johnvansickle.com/ffmpeg/releases/ffmpeg-release-amd64-static.tar.xz tar xvf ffmpeg-release-amd64-static.tar.xz…
grubby
grubby is provided by package grubby on RHEL based systems. To install grubby, run yum install grubby To list all kernels, run…
How to list iptables rules
To view all rules in iptables, run Or To list iptables rules without resolving IP to hostname To show the line number…
How to change varnish port in Ubuntu
To change the varnish port, run the command systemctl edit varnish It opens an editor, in the editor, paste the following [Service]…
Mounting partition stored inside Logical Volume
On a KVM Virtual machine using LVM storage, the LVM disk is partitioned as follows. root@mail:~# parted /dev/vg1/iredmail print Model: Linux device-mapper…
Configure multiple SSL certificates in nuster
Nuster is a high performance HTTP proxy cache server. It is based on haproxy. To configure multiple SSL certificates in nuster, create…
How to Remove a logical volume
To remove a logical volume, you can use the command lvremove /dev/vg-name/lv-name Example lvremove /dev/vg1/win10 This will remove logical volume with the…
systemd-networkd
systemd-networkd configuration files are stored in /etc/systemd/network/ Example /etc/systemd/network/05-eth0.network Here is a sample config [Match] Name=eth0 [Network] DHCP=no DNS=172.105.170.5 172.105.161.5 172.105.171.5 Domains=members.linode.com…