RHEL (Red Hat Enterprise Linux) contains some proprietary features and components that are not based on an open source license agreement. These components usually require the purchase of a commercial license for legal use. Some features that are not licensed under an open source license include:
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Red Hat Satellite: This is a management tool used to manage and monitor the RHEL environment. It is not open source software and requires additional licensing.
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Premium Support and Services: Although RHEL offers a free version and open source components, to receive premium technical support, emergency support, security support and service level agreement (SLA), users must Requires purchase of a commercial support license.
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Container Tools: Red Hat also provides some proprietary container tools, such as Red Hat Universal Base Images (UBIs), for building and deploying containers. These tools may require additional licensing.
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Certified Hardware Platforms: Red Hat provides certified support for specific hardware platforms, which may require additional cost.
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High Availability Clustering: RHEL provides high availability clustering solutions, including Red Hat High Availability Add-On. These features generally require additional licensing.
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Virtualization management tools: RHEL includes virtualization management tools such as Red Hat Virtualization (RHV), which may require additional licenses.
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RHEL Add-Ons: Red Hat also offers various add-on features such as Extended Update Support (EUS) and Smart Management, which usually require additional licensing.
It should be emphasized that not all RHEL features are proprietary, and most core operating systems and open source components are based on open source license agreements and can be freely used and modified. Commercial licenses mainly involve premium features, support and some specific management tools. Specific licensing and cost details may vary based on edition and subscription plan, so users should consult Red Hat or its authorized reseller for details.