PED-12471 PXE boot server SLE 16 improvements

[sounix000]

Description

Improve the article on PXE server for SLE 16:

• Original PR: PED-12471 PXE boot server SLE 16 #475 (merged)
• PR from Marius Tomaschewski with some of his suggested improvements: PED-12471 PXE boot server SLE 16 improvements #485 (merged).
  • Comments from Cathy Hu about SE Linux are still unresolved.
  • Commit messages from Marius might have important clues.
• Comments from Marius given on Slack and elsewhere needs to be collated and addressed.
• Any other comments from any engineer about SELinux and other relevant topics must be addressed in this PR.

Are there any relevant issues/feature requests?

• bsc#...
• jsc#PED-12471

Is this (based on) existing content?

Improvements will be made in the existing article.

• old xml:id: sles-pxe-server-setup (assembly file xml id)
• old URL: https://susedoc.github.io/doc-modular/main/html/SLE-PXE-server/

[ca-hu]

The important changes from the discussion in the meeting from the SELinux side:

---

Drop these lines, they are not needed because we do not need to create a custom module:
https://github.com/SUSE/doc-modular/blob/main/tasks/sles-pxe-server-prepare-network.xml#L284-L356
https://github.com/SUSE/doc-modular/blob/main/tasks/sles-pxe-server-prepare-network.xml#L381-L400

---

Here you need to add this command before you start the nginx service:

doc-modular/tasks/sles-pxe-server-http-nginx.xml

Line 130 in 320b019

</step>

command: setsebool -P httpd_serve_cobbler_files=1
this can be also added anywhere else, as long as it before you start the nginx service

This allows nginx to serve files from that directory

---

You need to add this command after finishing the directory structure and before you start the nginx/tftp services
command: restorecon -Rv /srv/tftpboot
for example you could add this here after this section:

doc-modular/tasks/sles-pxe-server-prepare-installer.xml

Line 312 in 320b019

</section>

This command resets the SELinux labels of the /srv/tftpboot to the one defined in the policy