Block an IP address in firewall-cmd
Sometimes you need to block an IP address (or a range of IP addresses) from accessing your machine. In this case firewall-cmd can help you
Change font in Moodle
If you have an academy and using moodle as an LMS is your choice, you may want to change default font of pages to a
Setup High Availability for HAProxy
To prevent service failure during disasters like server crash or so on, we have to find Single Point of Failure components and setup High Availability
sudo without password
Typing password for sudo commands is an awful experience. So here’s what we should do to stop linux asking for password: 1. Backup the sudoers
PHP: mysqli_connect(): The server requested authentication method unknown to the client [caching_sha2_password]
if you have these errors in your log file: It means that the server’s default authentication plugin is different from your client’s. So you have
Hosting a Podcast
To start a new podcast, you have to generate a feed in XML format. This feed should contain metadata about the podcast and its episodes