Once when running proftpd with configured users in a file, I noticed the following error:
Continue reading “Solution “mod_auth_file/1.0: unable to use world-readable AuthUserFile /etc/proftpd/ftpd.passwd””Category Archives: Linux
Mellanox ConnectX errors “Could not join netdev: No space left on device”
Once after installing the Mellanox ConnectX-3 Pro EN / HP 544+QSFP (764284-B21) network adapter into the HPE DL380 Gen10 server, I encountered errors in the /var/log/syslog file:
Continue reading “Mellanox ConnectX errors “Could not join netdev: No space left on device””Intel i40e driver update
For example, I will take an Intel XL710-QDA1 QSFP+ network adapter and a couple more with an Intel chip, for example, HPE 562SFP+, I will install them in an HPE DL380 Gen10 server running Ubuntu Server 18.04.
Continue reading “Intel i40e driver update”How to disable “New release available” email notifications on Ubuntu
Once I noticed that new servers running Ubuntu Server 18.04 operating systems periodically send email notifications:
Continue reading “How to disable “New release available” email notifications on Ubuntu”Installing and using Duplicity
In this article, I will provide an example of how to install and use Duplicity. Creation of full and incremental backups to local and remote servers.
Continue reading “Installing and using Duplicity”ABillS. Problem with payments between 00:00 and 01:00
In 2018, I ran into a problem when the user ran out of money on the account, at midnight he turned off the billing, the user immediately made a payment, the money was debited and the service turned on, and at 1 am it was turned off again, because the billing system tried to withdraw the monthly fee again. I’ll just post a simple script here that allows you to receive email notifications with a list of users who made a payment at night between 00:00 and 01:01, so that later you can manually correct it.
Continue reading “ABillS. Problem with payments between 00:00 and 01:00”IPTables. Blocking by MAC address
In this article, I will show examples of blocking MAC addresses in IPTables.
Continue reading “IPTables. Blocking by MAC address”Installing openDCIM on Ubuntu
openDCIM is a free PHP and MySQL web application for managing data center infrastructure.
Continue reading “Installing openDCIM on Ubuntu”Quagga. Setting up logging
I will give an example of setting up Quagga logging.
Continue reading “Quagga. Setting up logging”ABillS. Installing Freeradius
I will give an example of updating or installing Freeradius 3.0.21 from the source codes.
ABillS and Freeradius will work for me in the same operating system Ubuntu Server 18.04.