Add diagram of installer-based provisioning with HTTP boot

Lennonka commented 2 months ago

What changes are you introducing?

Adding a sequence diagram of installer-based provisioning with HTTP boot. Using PlantUML to build the diagram.

Why are you introducing these changes? (Explanation, links to references, issues, etc.)

Preparation for improvements of Provisioning hosts. The diagram will be used later to explain the workflow of the provisioning method.

Anything else to add? (Considerations, potential downsides, alternative solutions you have explored, etc.)

Some files (.iuml, .pstyle) are expected to be reused in mutiple diagrams.
Continuation of https://github.com/theforeman/foreman-documentation/pull/3069

Checklists

[x] I am okay with my commits getting squashed when you merge this PR.
[x] I am familiar with the contributing guidelines.

Please cherry-pick my commits into: N/A

github-actions[bot] commented 2 months ago

The PR preview for 562fccaf9d87611f4f33590b61744630f4545c0c is available at theforeman-foreman-documentation-preview-pr-3305.surge.sh

The following output files are affected by this PR:

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Lennonka commented 1 month ago

Updated based on feedback from #3304

Lennonka commented 1 month ago

We should tweak the diagram in such way so that it doesn't contain TFTP. Foreman uses the TFTP folder to do some steps, but HTTP boot doesn't use the TFTP protocol.

Lennonka commented 1 month ago

I've made an attempt to tweak the diagram so that it uses Proxy instead of TFTP as a participant, but I'm not sure if it's technically correct. We'll discuss tomorrow during our session.

theforeman / foreman-documentation