Web server – Page 3

How to downgrade PHP

Using an example, I will downgrade PHP in Ubuntu 18.04, in which version 7.2 is installed by default. I do not recommend downgrading PHP, since newer versions are more productive and close vulnerabilities, but there are times when you need to run an old script or engine that does not work on newer versions of PHP, and it is very difficult to fix the code due to the fact that there are a lot of files.

How to change user login in WordPress

To change the WordPress user login, you need to execute an SQL query to the database, since this cannot be done through the admin panel menu.

How to Prevent WordPress Theme Updates

Once upon a time a free theme was activated on one site and a lot of changes were made in it, so that someone would not accidentally update it and not overwrite the changes, I did the following:

Nginx. Parameter default_server

The default_server parameter defines the default server to which a client request will be sent in which the host field is empty or an unknown domain is specified in it. For example, when a client opens the server IP address in a browser, or when the server has several domains, for example, ixnfo.com, test1.ixnfo.com, test2.ixnfo.com, but not all domains are specified in the ngixn configuration.

Installing Memcached

Let me give you an example of installing Memcached, which allows you to cache data in RAM.

How to get client IP address in logs instead of IP HAProxy

Once on the same server as HAProxy, I noticed that the server’s IP address is written in the logs, not the clients, or there’s simply no IP address at all and hyphens are displayed.