# convention 4 kubernetes: c4k-common
[](https://clojars.org/org.domaindrivenarchitecture/c4k-common-clj) [](https://clojars.org/org.domaindrivenarchitecture/c4k-common-cljs) [](https://gitlab.com/domaindrivenarchitecture/c4k-common/-/commits/master)
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## Purpose
c4k-common provides the foundation for all our c4k modules.
It is now possible to generate a working prometheus monitoring file in yaml format.
Your config.edn and your auth.edn should at least contain the following fields:
config.edn - minimal example
```clojure
{:k3s-cluster-name "your-cluster-name"
:k3s-cluster-stage :prod
:grafana-cloud-url "your-url"}
```
auth.edn - minimal example
```clojure
{:grafana-cloud-user "user"
:grafana-cloud-password "password"}
```
call (with jarwrapper installed):
```bash
c4k-common-standalone.jar config.edn auth.edn > monitoring.yaml
```
## Rationale
There are many comparable solutions for creating c4k deployments like helm or kustomize. Why do we need another one?
* We like the simplicity of kustomize. Yaml in, yaml out, the ability to lint the result and the option to split large yaml files into objects. But a simple overwriting per environment may not be enough ...
* We like helm packages. A package encapsulates the setup for an application. On the one hand, but on the other hand we don't like the idea of having to program and debug in a template language. We can program much better in real programming languages.
Our convention 4 kubernetes c4k-* tools combine the advantages of both approaches:
* Packages for one application
* Programming in clojure
* yaml / edn as input and output, no more magic
* good validation, integration as api, cli or in the browser
## Usage
c4k-common provides the basic functionality for our c4k-modules.
## Refactoring & Module Overview
<!-- -
1. version
2. configs as EDN and YAML
3. renamed test-helper
4. common load-as-edn
5. standardized uberjar
6. groups for webview
7. use common ingress
-->
| Module | Version | [renamed test-helper][th1] | [common load-as-edn][edn1] | [standardized uberjar][ujar1] | [groups for webview][bgrp1] | [use common ingress][ing1] | [use common monitoring][mon1] | [validate examples][val1] |
|---------------|---------|:--------------------------:|:--------------------------:|:-----------------------------:|:---------------------------:|:--------------------------:|:-----------------------------:|:-------------------------:|
| c4k-keycloak | 0.2 | - | x | x | x | x | x | x |
| c4k-jira | 1.1 | - | | | | | | |
| c4k-nextcloud | 4.0 | - | x | x | x | x | x | x |
| c4k-jitsi | 1.3 | - | x | x | x | x | x | x |
| c4k-forgejo | 2.0 | x | x | x | x | x | x | x |
| c4k-shynet | 1.0 | - | | x | | | | |
| c4k-website | 1.1 | x | x | x | x | x | x | x |
[th1]: https://gitlab.com/domaindrivenarchitecture/c4k-gitea/-/merge_requests/1
[edn1]: https://gitlab.com/domaindrivenarchitecture/c4k-website/-/merge_requests/1
[ing1]: https://repo.prod.meissa.de/meissa/c4k-jitsi/commit/214aa41c28662fbf7a49998e17404e7ac9216430
[ujar1]: https://repo.prod.meissa.de/meissa/c4k-jitsi/commit/b852a74dc561c3ab619e4f4d0748ab51e75edc13
[bgrp1]: https://repo.prod.meissa.de/meissa/c4k-jitsi/commit/7ea442adaef727d5b48b242fd0baaaf51902d06e
[mon1]: https://repo.prod.meissa.de/meissa/c4k-jitsi/commit/19e580188ea56ea26ff3a0bfb08ca428b881ad9a
[val1]: https://repo.prod.meissa.de/meissa/c4k-jitsi/commit/5f08a108072569473463fb8f19150a12e564e54f
[repo1]: https://repo.prod.meissa.de/meissa/c4k-forgejo/commit/e9ee6136f3347d5fccefa6b5b4a02d30c4dc42e1
## License
Copyright © 2022 meissa GmbH
Licensed under the [Apache License, Version 2.0 ](LICENSE ) (the "License")
Pls. find licenses of our subcomponents [here ](doc/SUBCOMPONENT_LICENSE )
