Caution: Kernel 5.3.4 and RAID0 default_layout

When you have a RAID0 array that is made up of 2 or more devices that are not the same size, at least on Archlinux since Kernel version 5.3.4 you will have trouble booting.
You will get the message:

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MySQL 5.7 Reset Root Password

The most simple way to reset the root password of MySQL 5.7 on CentOS 7

Golang self-signed certificate

The simplest way to create a self-signed certificate with Go:

or ecdsa 10 years duration

or ed25519 10 years duration