CSF (ConfigServer Security Firewall) is a popular tool for managing security and firewalls on servers, often used in environments where control panels such as ISPmanager are installed. CSF offers a wide range of features to protect your server.
In Linux distributions, the suexec utility allows PHP to run in FastCGI and CGI modes only for users with GID and UID above 1000. If users with GID/UID below 1000 were migrated, this may cause errors when opening websites.
Support for Centos 8 in the ISPManager control panel was completely discontinued on January 1, 2022. After that, users began to look for an alternative to this OS and found it in AlmaLinux 8. Successful migration is possible using the almalinux-deploy script. This process allows you to save data and system settings with minimal downtime.
As is well known, support for Centos 7 was discontinued in the summer of 2024, and the ISPManager 6 control panel can no longer run on a server with Centos 7 installed. This raises the question for many users: what should be done and which alternative should be chosen? The first thing to note is that migration is a very responsible process. Below, we will explain how to do it correctly.