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104 lines
3.2 KiB
Markdown
104 lines
3.2 KiB
Markdown
# Kubernetes prompt for zsh
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A Kubernetes zsh prompt that displays the current cluster cluster
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and the namespace.
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Inspired by several tools used to simplify usage of kubectl
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NOTE: If you are not using zsh, check out [kube-ps1](https://github.com/jonmosco/kube-ps1)
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designed for bash as well as zsh.
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## Requirements
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The default prompt assumes you have the kubectl command line utility installed. It
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can be obtained here:
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[Install and Set up kubectl](https://kubernetes.io/docs/tasks/tools/install-kubectl/)
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If using this with OpenShift, the oc tool needs installed. It can be obtained from here:
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[OC Client Tools](https://www.openshift.org/download.html)
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## Helper utilities
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There are several great tools that make using kubectl very enjoyable.
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[kubectx and kubenx](https://github.com/ahmetb/kubectx) are great for
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fast switching between clusters and namespaces.
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## Prompt Structure
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The prompt layout is:
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```
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(<symbol>|<cluster>:<namespace>)
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```
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## Enabling
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In order to use kube-ps1 with Oh My Zsh, you'll need to enable them in the
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.zshrc file. You'll find the zshrc file in your $HOME directory. Open it with
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your favorite text editor and you'll see a spot to list all the plugins you
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want to load.
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```shell
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vim $HOME/.zshrc
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```
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Add kube-ps1 to the list of enabled plugins and enable it on the prompt:
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```shell
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plugins=(
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git
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kube-ps1
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)
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# After the "source Oh My Zsh" line
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PROMPT=$PROMPT'$(kube_ps1) '
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```
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Note: The `PROMPT` example above was tested with the theme `robbyrussell`.
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## Enabling / Disabling on the current shell
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Sometimes the kubernetes information can be anoying, you can easily
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switch it on and off with the following commands:
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```shell
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kubeon
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```
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```shell
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kubeoff
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```
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## Colors
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Blue was used as the prefix to match the Kubernetes color as closely as
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possible. Red was chosen as the cluster name to stand out, and cyan
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for the namespace. Check the customization section for changing them.
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## Customization
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The default settings can be overridden in ~/.zshrc
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| Variable | Default | Meaning |
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| :------- | :-----: | ------- |
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| `KUBE_PS1_BINARY` | `kubectl` | Default Kubernetes binary |
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| `KUBE_PS1_PREFIX` | `(` | Prompt opening character |
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| `KUBE_PS1_SYMBOL_ENABLE` | `true ` | Display the prompt Symbol. If set to `false`, this will also disable `KUBE_PS1_SEPARATOR` |
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| `KUBE_PS1_SYMBOL_DEFAULT` | `⎈ ` | Default prompt symbol. Unicode `\u2388` |
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| `KUBE_PS1_SYMBOL_USE_IMG` | `false` | ☸️ , Unicode `\u2638` as the prompt symbol |
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| `KUBE_PS1_NS_ENABLE` | `true` | Display the namespace. If set to `false`, this will also disable `KUBE_PS1_DIVIDER` |
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| `KUBE_PS1_SEPERATOR` | `\|` | Separator between symbol and cluster name |
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| `KUBE_PS1_DIVIDER` | `:` | Separator between cluster and namespace |
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| `KUBE_PS1_SUFFIX` | `)` | Prompt closing character |
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| `KUBE_PS1_COLOR_SYMBOL` | `"%F{blue}"` | Custom color for the symbol |
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| `KUBE_PS1_COLOR_CONTEXT` | `"%F{red}"` | Custom color for the context |
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| `KUBE_PS1_COLOR_NS` | `"%F{cyan}"` | Custom color for the namespace |
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| `KUBE_PS1_ENABLED` | `true` | Set to false to start disabled on any new shell, `kubeon`/`kubeoff` will flip this value on the current shell |
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## Contributors
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- Jared Yanovich
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- Pedro Moranga
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