feat: init priviledged access workspace adr

architecture-decision-records/009-greenhouse-privileged-access-workspace.md

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+# 009-greenhouse-privileged-access-workspace
+
+- Status: [draft] <!-- optional -->
+- Deciders: [David R., Martin V., Fabian K., Tommy S.] <!-- optional -->
+- Date: [YYYY-MM-DD when the decision was last updated] <!-- optional. To customize the ordering without relying on Git creation dates and filenames -->
+- Tags: [greenhouse / cloudoperators] <!-- optional -->
+- Technical Story: [description | ticket/issue URL] <!-- optional -->
+
+## Context and Problem Statement
+
+Operators need access to manage and maintain the infrastructure. This includes access to the Kubernetes cluster, the VMs, and Hypervisor. The workspace should be hardened. This workspace could be a combination of CodeServer workspace and webshell.
+
+## Decision Drivers <!-- optional -->
+
+- [driver 1, e.g., a force, facing concern, …]
+- [driver 2, e.g., a force, facing concern, …]
+- … <!-- numbers of drivers can vary -->
+
+## Considered Options
+
+- [option 1]
+- [option 2]
+- [option 3]
+- … <!-- numbers of options can vary -->
+
+## Decision Outcome
+
+Chosen option: "[option 1]",
+because [justification. e.g., only option, which meets k.o. criterion decision driver | which resolves force force | … | comes out best (see below)].
+
+### Positive Consequences <!-- optional -->
+
+- [e.g., improvement of quality attribute satisfaction, follow-up decisions required, …]
+- …
+
+### Negative Consequences <!-- optional -->
+
+- [e.g., compromising quality attribute, follow-up decisions required, …]
+- …
+
+## Pros and Cons of the Options | Evaluation of options <!-- optional -->
+
+### [option 1]
+
+[example | description | pointer to more information | …] <!-- optional -->
+
+| Decision Driver     | Rating | Reason                        |
+|---------------------|--------|-------------------------------|
+| [decision driver a] | +++    | Good, because [argument a]    |                                                                                                                                                                                                                                                                | 
+| [decision driver b] | ---    | Good, because [argument b]    |
+| [decision driver c] | --     | Bad, because [argument c]     |
+| [decision driver d] | o      | Neutral, because [argument d] |
+
+### [option 2]
+
+[example | description | pointer to more information | …] <!-- optional -->
+
+| Decision Driver     | Rating | Reason                        |
+|---------------------|--------|-------------------------------|
+| [decision driver a] | +++    | Good, because [argument a]    |                                                                                                                                                                                                                                                                | 
+| [decision driver b] | ---    | Good, because [argument b]    |
+| [decision driver c] | --     | Bad, because [argument c]     |
+| [decision driver d] | o      | Neutral, because [argument d] |
+
+### [option 3]
+
+[example | description | pointer to more information | …] <!-- optional -->
+
+| Decision Driver     | Rating | Reason                        |
+|---------------------|--------|-------------------------------|
+| [decision driver a] | +++    | Good, because [argument a]    |                                                                                                                                                                                                                                                                | 
+| [decision driver b] | ---    | Good, because [argument b]    |
+| [decision driver c] | --     | Bad, because [argument c]     |
+| [decision driver d] | o      | Neutral, because [argument d] |
+
+## Related Decision Records <!-- optional -->
+
+[previous decision record, e.g., an ADR, which is solved by this one | next decision record, e.g., an ADR, which solves this one | … | pointer to more information]
+
+## Links <!-- optional -->
+
+- [Link type](link to adr) <!-- example: Refined by [xxx](yyyymmdd-xxx.md) -->
+- … <!-- numbers of links can vary -->