Access denied for user ‘root’@’localhost’ after installing MySQL [Fix]
I Installed MySQL server (MariaDB 8.0) on my CentOS 7 using yum. Once started the service and when I tried...
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Run multiple versions of PHP for different domains in NGNIX
I recently purchased EduExpression WordPress plugin for a client to setup an examination software. I was able to install and...How to Install phpize in Ubuntu?
Question: I got an error phpize not found while installing PHP-SSH2 extension on Ubuntu. How to install phpize in Ubuntu?...Fix Sub-Process /usr/bin/dpkg returned an error code(1)
I encountered an error “Sub-Process /usr/bin/dpkg returned an error code (1)” while installing a Single sign-on package called Gluu Server....Unrecognized VM option MaxMetaspaceSize=256m – oxd-server failed to start [Solution]
Recently I have been trying my hands with SSO using OpenID connect single sign-on plugin by Gluu. One of the...Uncaught Error Class ZipArchive not found – docxpresso plugin
One of my client wanted to write tutorials containing lots of mathematical equations and formulas. By default, WordPress editor supports...Can’t exec mysql_config: No such file or directory at Makefile.PL [Fix]
If you are getting an error “Can’t exec mysql_config: No such file or directory at Makefile.PL”, then here’s how you...Cannot find valid baseurl : YumRepo Error [Solved]
This tutorial will explain how to fix yum repo error “Cannot find valid baseurl”, while executing yum install or yum...Createuser could not connect to database postgres [Fix]
Here’s a question from one of our regular reader Sam. He says that PostgreSQL does not allow to create user...Fix fatal error openssl err.h – No such file or directory [OpenCA]
I have been installing OpenCA version 1.5.1 on CentOS 7 machine. According to the documentation, I need to install OpenCA...Fix NGINX 403 forbidden error after changing Root directory
Installed Nginx and PHP-FPM for processing PHP files on CentOS server. To my surprise when accessed PHP files through browser,...What is the current runlevel of Linux system?
These days Linux systems comes with beautiful graphical interfaces as compared to earlier terminals that are text-mode interfaces. So, Linux...Perl error: PERL XML-Parser module requires expat-devel
I recently fixed an error “addMessage failed for log slot XML” while accessing OpenCA pub page. However that was an older...How to install LEMP on Ubuntu 14.04 LTS
LEMP is a group of open source software stack used to setup web server, database and PHP on a Linux...How to Configure virt-manager for Nested Virtualization Support?
Question: I have installed KVM hypervisor on my Debian Guest OS (basically a nested virtualization) which is hosted on a...msfconsole error after updating Metasploit Framework in Kali Linux [Solved]
Updating Metasploit is quite easy – you just need to run msfupdate command. Later, you might have to be prepared...Issue: IP address in Ubuntu gets cleared automatically after sometime [Solution]
Question: I have set an ip address for eth0 interface in Ubuntu and it worked for a while. But after...How to Fix libpci header check failed. Disable KVM Device Assignment capability?
Question: I got an error “libpci header check failed. Disable KVM Device Assignment capability” while compiling qemu-kvm package on Ubuntu...How to Fix apt-get Failed to Fetch error in unsupported Ubuntu releases
For one of my project, I need to install an older version of Ubuntu (11.10 oneiric release). But apt-get failed...