this post was submitted on 25 Dec 2023
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Linux
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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The problem with SELinux is that everyone rushed to push it out, alongside packages affected by it without support for it. So it was a crapshoot whether or not you'd have something working each time. That is better now, but was initially a colossal pain in the ass for about five years or so.
What put me off selinux is that the officially documented way of generating a new policy is to run a service unconfined, and then generating the policy from its behaviour. This is backwards on so many levels... In contrast policy-based admission control in kubernetes is a delight to use, and creating new policies is actually doable outside of a lab.
You could preemptively write the policy if you know the context and policies you want to apply. I just don’t think it’s worth the time when you can generate a policy with two commands.
Fair. But audit2allow makes it really easy to add support for apps without policies. For custom in-house apps I use this to spit out some nice policies that can be rolled out.