Containers as services in Enterprise Linux 8

2021-11-17
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When implementing server services as containers, they are usually required to be run automatically when the server starts. At Enterprise Linux 8, we can create systemd units that run containers along with server startup and end container operation with shutdown. These units can be created even for containers launched in „rootless ” mode (without requiring […]

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SELinux – extended security model in Enterprise Linux 8

2021-10-04
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Security Enhanced Linux (SELinux) is an advanced access control mechanism built into most modern Linux distributions. Initially, it was developed by the US National Security Agency (NSA) to better protect computer systems. Then it was made available in the public domain and since then various distributions have included it in their code. SELinux is configured […]

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Load average, process states on Linux, and some loadavg myths

2021-03-16
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In my professional experience, I quite often have the opportunity to conduct recruitment, a part of which are questions related to Linux family systems. One of the standard questions is about an important, although in fact not saying much, system statistics, which is the average system load (abbreviated to loadavg). Unfortunately, it happens, also in the case of people with really impressive professional experience, that the candidate is not able to correctly describe and interpret the information ensuing from the load average.

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Modules, streams and profiles in Enterprise Linux 8

2020-09-30
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Enterprise Linux from version 8 in addition to individual RPM packages introduces new modular functionality. A typical module includes application packages, packages with application-specific dependency libraries, documentation packages, and packages with supporting tools. This feature is characteristic of all Linux distributions in the Enterprise family: Red Hat®, Oracle®, CentOS, Rocky Linux, AlmaLinux. Thanks to streams, […]

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