Since when Cloudflare proxy is enabled, requests to the web server will come from Cloudflare servers, and not directly from users, you need to configure the CF-Connecting-IP header, which transmits the user’s real IP address. After configuration, it will be displayed as before in logs and requests.
Continue reading “Configuring Cloudflare’s CF-Connecting-IP Header”Category Archives: Apache2
Installing GeoIP in Apache2
I was once asked to block some countries on a web server running Apache2 and Ubuntu Server 20.04.
Continue reading “Installing GeoIP in Apache2”Configuring OCSP Stapling
OCSP is a protocol for checking the validity of certificates, that is, to make sure that they have not been revoked and whether they were actually issued. Enabling OCSP Stapling on the web server side allows you to increase the speed of site opening, since the request to the certification authority is made not by the browser, but by the web server.
Continue reading “Configuring OCSP Stapling”Solution Invalid command ‘Header’, perhaps misspelled or defined by a module not included in the server configuration
Once I transferred one site from one server to another Ubuntu server and after installing Apache2 I noticed the following error in the logs:
Continue reading “Solution Invalid command ‘Header’, perhaps misspelled or defined by a module not included in the server configuration”How to enable PHP-cURL
To enable the PHP-cURL extension on Linux Ubuntu/Debian, you must first install it with the command:
Continue reading “How to enable PHP-cURL”Solution AH00558: apache2: Could not reliably determine the server’s fully qualified domain name
Once after installing and configuring Apache2 on Ubuntu Server 20.04, I noticed the following error in the /var/log/apache2/error.log logs:
Continue reading “Solution AH00558: apache2: Could not reliably determine the server’s fully qualified domain name”Configuring HTTPS in Apache
First, I will give an example of setting up HTTPS in Apache using a self-signed key.
Continue reading “Configuring HTTPS in Apache”Solution for ImportError: No module named web
Once I needed to disable the Nginx web server on the same server with iRedmail and install Apache2. And when I tried to start iRedadmin, it did not open, and in the Apache2 logs I saw:
Continue reading “Solution for ImportError: No module named web”Solution Syntax error on line 80 of /etc/apache2/apache2.conf: DefaultRuntimeDir must be a valid directory, absolute or relative to ServerRoot
Once I wanted to see which MPM module is being used and executed the command:
Continue reading “Solution Syntax error on line 80 of /etc/apache2/apache2.conf: DefaultRuntimeDir must be a valid directory, absolute or relative to ServerRoot”Installing Memcached
Let me give you an example of installing Memcached, which allows you to cache data in RAM.
Continue reading “Installing Memcached”