General

You might have come across this error when using SSH. This is as a result of the IP address of the remote host you're trying to SSH into having changed…

The first step to mounting your qcow2 image is to enable nbd (network block device) on your machine: sudo modprobe nbd max_part=8 The next step is to connect your qcow2…

By default SSH doesn't allow root logins for Ubuntu. To enable root login run the following command: sudo nano /etc/ssh/sshd_config Under the Authentication section find the following: PermitRootLogin prohibit-password And…

When trying to register a new domain you might encounter the following error when accepting the order and sending to the registrar: Order Accept Encountered Problems Command Syntax Error This…

Backup docker exec CONTAINER /usr/bin/mysqldump -u root –password=root DATABASE > backup.sql Restore cat backup.sql | docker exec -i CONTAINER /usr/bin/mysql -u root –password=root DATABASE

If you're checking for the availability of a domain on the client side of WHMCS and encounter the following error: Domains must begin with a letter or number If you…

When deleting virsh snapshots using snapshot-delete you might encounter the following error: error: unsupported configuration: deletion of 1 external disk snapshots not supported yet To successfully delete the snapshot you…

If you receive either of the following errors when creating a WHMCS package for a client: Sorry, that username is reserved or is a reserved username on this system Then…

Even though a web page can seem fast, the default Nginx configuration will cause Google's PageSpeed Insights tool to flag inefficiencies in your site and grade it poorly. In this…

GoCD is an open source continuous delivery service that helps organizations increase productivity and deliver high quality through automation. It is a flexible tool that can help teams deliver well-tested…