Vyacheslav, Автор в IT Blog

Why is the GRUB installed on a flash drive when installing Linux?

By default, the GRUB boot loader is installed on the first disk in the system, it is usually a hard disk, but on some servers with RAID controllers I noticed that when you turn on the server, select the USB flash drive in the Boot menu, of course, to boot from it, it becomes the first disk, then there is /dev/sda and at the end of the system installation the bootloader is installed on it.

ASUS RT-N12LX Firmware Update

For example, I will update the firmware of ASUS RT-N12LX router from version 2.0.0.35 to 2.0.0.37.

Firmware Update ASUS DSL-N10

For example, I will update the firmware of the ASUS DSL-N10 modem from version 1.0.1.2 to 1.0.5.2.

Asus WL-600g Firmware Update

For example, I will update the firmware of the Asus WL-600g modem from version 1.0.3.3.A to 1.0.3.6A.

Configuring InnoDB Buffer Pool size in MySQL

I will give an example of resizing the InnoDB buffer pool in MySQL.
In the InnoDB buffer pool, this is the memory space in which indexes, caches, buffers, etc. are stored.

Installing and configuring Logwatch

In this article I will give an example of installing Logwatch.
Installation command in Ubuntu/Debian:

Installing Graylog on Ubuntu

Graylog – open source software with a web interface for collecting and viewing logs, at the time of this writing, free of charge up to the limit of data collected is 5 GB per day.

WS-SUP720-3BXL does not start Not Applicable Unknown

Once after a power outage, on Cisco Catalyst 6509-E, instead of the main module WS-SUP720-3BXL, only the backup module was launched.
As I found out later, the memory card stopped working and, accordingly, the module could not start the firmware. At this moment on the module all the indicators glowed red.

Configuring DHCP Snooping on MikroTik

I will give an example of setting up DHCP Snooping on MikroTik (RouterOS) to block third-party DHCP servers:

Installing and using the Wondershaper

WonderShaper is software for Linux that allows you to limit the speed of data transmission and reception on network interfaces, suitable for home or office computers.