Sysadmin

Various guides and articles about servers and products such as haProxy and nginx.

ngx_slab_alloc() failed: no memory in SSL session shared cache “le_nginx_SSL”

An SSL issue that I ran into the other day.

The other day, I came across a frustrating issue while attempting to renew the Let’s Encrypt SSL certificate on my haproxy load balancer.

This is a common error that occurs whenever PHP’s curl extension has not been installed or enabled.

This is a short guide on how to use the Linux find utility to remove old files.

When it comes to columns such as INT (11) and TINYINT (3), the number in brackets isn’t actually that important.

This is a short tutorial on how to force HTTPS / SSL with the HAProxy load balancer.

A short guide on how to forward HTTPS headers with HAProxy so that PHP knows what protocol is being used.

In this tutorial, I will show you how to setup haproxy as a load balancer that uses sticky sessions.