I have previously used Ubuntu and CentOS as different solutions. However, since Ubuntu is not much familiar in our organization, we moved to Red Hat Enterprise Linux (RHEL). CentOS has already been decommissioned and merged into Red Hat, so for the past seven years, we have been using Red Hat Enterprise Linux (RHEL). Before that, we were using Ubuntu, both in college and school days, and I have worked with different flavors and also on Oracle.
The key difference I see between Red Hat Enterprise Linux (RHEL) and Ubuntu is mainly in the support offered. Red Hat Enterprise Linux (RHEL) provides 24x7 support for any critical issues we face. As we are working in the banking sector, having that support is crucial. In contrast, with Ubuntu or CentOS, we do not have timely support; we need to raise tickets and face delays in deployment and production, which is a significant drawback.
I assess the knowledge base offered by Red Hat Enterprise Linux (RHEL) as very good. The training sessions are beneficial and it is totally open source, allowing us to access official sites for learning and documentation. I continuously learn with Red Hat Enterprise Linux (RHEL) and find plenty of free documents available for study. Compared to other operating systems like Ubuntu, there is not as much documentation, making it easier to learn using Red Hat Enterprise Linux (RHEL) official resources.
The most important security features in Red Hat Enterprise Linux (RHEL) stem from its open-source nature, which allows us to easily understand what happens within the system and identify potential loopholes. Additionally, SELinux is a powerful security module we use to block external threats. It also features a firewall, encryption, and uses advanced algorithms like SALT and SH5, making it difficult for malicious entities to crack the system. In essence, Red Hat Enterprise Linux (RHEL) has robust security features.
I have used the Image Builder of Red Hat Enterprise Linux (RHEL) but not the system roles. Image Builder has proven useful for creating images.
The Image Builder is very easy and simplifies tasks, significantly reducing our workload. It saves us a lot of time compared to what we used to do previously, thereby boosting our productivity.