Sometimes some necessary processes use a lot of resources on the server and the system often starts to notify about it by email.
For example, as in my case, after installing the Zabbix agent, notifications began to come:
Category Archives: Linux
How to solve “LFD: Excessive resource usage”
Somehow I noticed errors coming to the mail from cPanel:
Continue reading “How to solve “LFD: Excessive resource usage””IPTables rules for SNMP
In this article, I will give an example of IPTables rules for SNMP.
Let’s say “iptables -P INPUT DROP” is the default, which is very desirable.
Configuring SNMP Traps on Linux
Here is an example of installing SNMP and catching SNMP traps in Ubuntu Server.
Continue reading “Configuring SNMP Traps on Linux”Backup to Yandex disk
I will give an example of a script for creating backup copies to Yandex drive.
Continue reading “Backup to Yandex disk”cPanel. Solving the Failed to find user “” from expanded string
Once on the same server as cPanel, after changing the settings in the WHM menu “Server Configuration” – “Settings”, email stopped working, I found the following error in the logs:
Continue reading “cPanel. Solving the Failed to find user “” from expanded string”How to solve Cpanel::MailAuth: cphulk blocked login for user to access service ‘mail’
I noticed somehow that mail from Cpanel does not open through the Web Roundcube, SquirrelMail, Horde, and also you can’t connect to mail from PHP scripts.
Continue reading “How to solve Cpanel::MailAuth: cphulk blocked login for user to access service ‘mail’”The problem with multiple SSL on the same IP
If there are several sites with SSL on the same IP address, then old ancient browsers that do not support SNI will not be able to determine which certificate to download and will most likely download the first one that is registered at the beginning of the web server configuration.
Continue reading “The problem with multiple SSL on the same IP”Installing Asterisk on Ubuntu Server
I will give an example of a quick installation of Asterisk on Ubuntu Server.
I will install it on versions 14.04 LTS and 16.04 LTS.
Installing LFTP on Linux
LFTP is a console FTP client with support for FTPS, SFTP, HTTPS, etc.
Continue reading “Installing LFTP on Linux”