Installation on Ubuntu / Debian:
Continue reading “apticron – email notification of updates”Author Archives: Vyacheslav
Installing Windows on a GPT Disk
To create a bootable flash drive, open the command line as administrator and enter the commands:
Continue reading “Installing Windows on a GPT Disk”Configuring HP 5800
I will give an example of setting up the HP 5800 switch.
Continue reading “Configuring HP 5800”How to change join_buffer_size in MySQL
I will give an example of changing join_buffer_size in MySQL.
join_buffer_size determines the size of the buffer for index scanning and joins without indexes. I recommend adding indexes or slightly increasing join_buffer_size (but in this case a full table scan will be performed).
How to enable Slow Query Log in MySQL
Enabling slow_query_log and log_queries_not_using_indexes will help to identify slow queries and queries without indexes that affect the performance of the MySQL server.
Continue reading “How to enable Slow Query Log in MySQL”File Integrity Check Script
Once on one server it was necessary to monitor the integrity of the file in which the changes were made, and if someone performed a system update, then this file could change and corrections had to be made again.
Usually I use a Zabbix agent and a Zabbix server for such purposes, but this server was single and it makes no sense to install a Zabbix server on it, so I wrote a simple script:
Why are energy-saving and LED lamps blinking?
The main reasons for blinking energy-saving and LED lamps when the switch is off:
Continue reading “Why are energy-saving and LED lamps blinking?”Installing and configuring daloRadius
daloRadius – web interface for FreeRadius.
Continue reading “Installing and configuring daloRadius”Installing and configuring FreeRADIUS
Installation on Ubuntu:
Continue reading “Installing and configuring FreeRADIUS”Disabling IPv6 on Linux
First, check whether IPv6 protocol support is enabled or disabled (0 – on, 1 – off):
Continue reading “Disabling IPv6 on Linux”