176 lines
5 KiB
Markdown
176 lines
5 KiB
Markdown
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+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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title = "Skynet: LDAP"
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date = 2023-10-22
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slides = false
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+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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# CI/CD
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-------------------------------------------------------------------------
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CI: Continuous Integration
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CD: Continuous Delivery/Deployment
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## CI: Continuous Integration
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This is regularly testing and merging into the main branch.
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Anyone contributing to skynet will have seen the test/linter pipelines.
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Its easier/less painful to test small changes.
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## CD: Continuous Delivery/Deployment
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Automatically building or deploying teh final product after CI
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Builds/deploys in a reliable manner.
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## Why its so danm good
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So you have been using Git right?
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But you have been SSHing into teh server to update the code in production
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Which is grand but tedious.
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You forgot to push the new update last ween to the server.
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Now its Friday and ye got DnD this evening.
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So ye quicky pull ghe git repo in and run the init script.
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Then ye quickly leave, thinking of what your Fairy Barbarian will do next
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You may have forgotten to test it properly though.....
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```bash
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userDir=/home/username
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rm -rf $userdir/
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```
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Congratulations!
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You just wiped everything!
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Did you spot the typo?
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So what are the things that went wrong?
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1. Forgot to deploy the previous release.
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2. Forgot to do/skipped testing.
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3. It will be Sat that you will get teh dreaded phonecall.
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-------------------------------------------------------------------------
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CI/CD in this case will test and then deploy, automagically.
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-------------------------------------------------------------------------
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If it finds an error the pipeline stops.
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Some pipelines have the option to undo a bad deploy.
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-------------------------------------------------------------------------
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## CI/CD as a force multiplier.
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-------------------------------------------------------------------------
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It allows Devs to deploy early and often (feel like making an impact)
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-------------------------------------------------------------------------
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Gives Ops folks more reliability, same process every time.
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-------------------------------------------------------------------------
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Handles tediousness.
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It does require more up front time investment to get set up.
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-------------------------------------------------------------------------
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Well worth it for piece of mind.
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-------------------------------------------------------------------------
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Back in 2009 there were [4+ admins][0]
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-------------------------------------------------------------------------
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They were each responsible for their own servers.
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-------------------------------------------------------------------------
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Each had their own processes.
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-------------------------------------------------------------------------
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Handed down like arcane scrolls.
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-------------------------------------------------------------------------
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Now said scrolls are codified.
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-------------------------------------------------------------------------
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Since pipeline deploys on our behalf no need to have admin access.
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-------------------------------------------------------------------------
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//Use this time to explore the nixos repo to explain//
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[0]: https://2016.skynet.ie/contacts.html
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