Category Archives: Ubuntu

Couldn’t agree on host key algorithm

You’re suddenly receiving a “FATAL ERROR: Couldn’t agree a host key algorithm (available: rsa-sha2-512,rsa-sha2-256)” when trying to ssh into your Ubuntu Linx Server Resolution: The Couldn’t agree a key exchange algorithm is expected behavior with older versions of PuTTy or WinSCP. To resolve this issue, upgrade PuTTy to the latest version via the below links.… Read More »

Could not get lock /var/lib/dpkg/lock

Recently I was trying to update/upgrade Ubuntu 21.10 using the apt when I encountered the following error: E: Could not get lock /var/lib/dpkg/lock – open (11: Resource temporarily unavailable) E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it? A quick resolution that worked for me: ps aux | grep -i apt… Read More »

Installing PowerDNS (With MySQL Backend) on Debian

PowerDNS is a DNS server, written in C++ and licensed under the GPL. It runs on most Unix derivatives. PowerDNS features a large number of different backends ranging from simple BIND style zonefiles to relational databases and load balancing/failover algorithms. A DNS recursor is provided as a separate program. Installation of the PowerDNS Authoritative server… Read More »

530 Login incorrect via ProftpD

How to fix “Error: Critical error: Could not connect to server” on ubuntu 14.04 Status: Resolving address of ftp.esgnet.lan Status: Connecting to… Status: Connection established, waiting for welcome message… Status: Initializing TLS… Status: Verifying certificate… Status: TLS connection established. Command: USER sibanda Response: 331 Password required for esgnet Command: PASS *********** Response: 530 Login… Read More »

How to Install and Configure ProFTPD on Ubuntu 14.04 Server

ProFTPD (short for Pro FTP daemon) is an FTP server. ProFTPD is Free and open-source software, compatible with Unix-like systems and Microsoft Windows (via Cygwin). Along with vsftpd and Pure-FTPd, ProFTPD is among the most popular FTP servers in Unix-like environments today. This article assumes you have at least basic knowledge of linux, know how… Read More »

cakePHP 3 Installation Step by Step

CakePHP is a powerful and robust PHP framework built around the Model-View-Controller (MVC) programming paradigm. In addition to the flexible way you can use it to build your application, it provides a basic structure for organizing files, classes and database table names – keeping everything consistent and logical. Installing CakePHP 3 on Ubuntu 16.04. CakePHP… Read More »

How to upgrade to Ubuntu 14.04 Server

Before upgrading it is always recommended that you create a backup first. Step 1 : Check the current version of Ubuntu Remember the best way to learn any new technical skill, is to play around and see how things work. Get comfortable you’re few steps in right direction. Click HERE to Order Your VPS NOW!… Read More »

Fabric: Problem importing our SSH library

Traceback (most recent call last): File “/usr/lib/python2.6/site-packages/fabric/”, line 24, in import paramiko as ssh File “/usr/lib/python2.6/site-packages/paramiko/”, line 30, in from paramiko.transport import SecurityOptions, Transport File “/usr/lib/python2.6/site-packages/paramiko/”, line 49, in from paramiko.dsskey import DSSKey File “/usr/lib/python2.6/site-packages/paramiko/”, line 26, in from Crypto.PublicKey import DSA ImportError: No module named Crypto.PublicKey There was a problem importing our SSH library… Read More »