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Peter Au

A full-stack software professional with over 20 years’ experience of developing and managing complex software applications in both start-up and enterprise environments.
Linux/LAMP

PHP json_encode() and json_decode() functions missing in RHEL 8

If you have just set up a RHEL 8 server, this includes CentOS 8, AlmaLinux 8, and Rocky Linux 8, you might have run into a fatal PHP error when using JSON related functions. For example: This is because in RHEL 8, standard PHP installation is no longer including JSON Read more…

By Peter Au, 3 years3 years ago
Linux/LAMP

Apache/MySQL Optimization for AWS Micro Instance (or other low resource VPS)

Amazon Web Services EC2 micro instance is available within its first year free tier. This instance type is a good way to start building your LAMP server for website or web application. However, it is possessed very limited resources, especially in the main memory category, where even the Apache and Read more…

By Peter Au, 4 years4 years ago
Windows

Microsoft Office not starting – Repairing Windows 10 Apps

If you find your Microsoft Office not starting, or one of your apps in Windows 10 does not work properly, here’s a little trick that it probably would get it back right on track quick. Repair / Reset Options There are lesser-known options in Apps & Features of Windows 10 Read more…

By Peter Au, 4 years4 years ago
Linux/LAMP

PHP 7.3 php-gd failed to load ( undefined symbol: hb_ft_font_set_load_flags)

If you recently upgraded your CentOS 7 PHP to version 7.3 (or probably 7.2) using remi repository, you might encounter an error complaining php-gd dynamic library failed to load when running any php command. You system may miss to upgrade an package which is used by php-gd library. It is Read more…

By Peter Au, 5 years4 years ago
Linux/LAMP

Let’s Encrypt Certbot Apache plugin problem with Apache Configuration Without using Virtual Host

Let’s Encrypt provides free SSL certificates to any sites which make the TLS encryption universal to the Internet. Setting up Let’s encrypt for Apache webs erver is supposed to be easy and straight forward, especially in linux environment. However, if your Apache is configured only with base configuration (without using Read more…

By Peter Au, 5 years4 years ago

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