k8senv

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Kubernetes client's version manager to manage multiple versions of kubectl, helm and velero clients on same system/jumpbox/bastion.

k8senv 최신버젼 다운로드

최종 버전 다운로드 (.zip)

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# k8senv

[Kubernetes](https://kubernetes.io) client's version manager inspired by [tfenv](https://github.com/tfutils/tfenv)

Kubernetes clients supported at this moments are `kubectl`, or, `helm`, or, `velero` on Linux servers/machines.

Manytimes we need to manage many Kubernetes clusters from same jumpbox or machine or bastion server. Those many cluster may have different versions of Kubernetes. In that case, It becomes difficult to use multiple versions of Kubernetes clients to communicate with those different versions of clusters.

This small tool is to help manage different versions of Kubernetes clients. Kubernetes clients `kubectl`, `helm` and `velero` are supported at this stage.

- [How to install/setup](https://github.com/navilg/k8senv#how-to-installsetup)
- [Usage](https://github.com/navilg/k8senv#usage)
- [Demo](https://github.com/navilg/k8senv#demo)

## How to install/setup

1. Create a directory .k8senv/bin in home directory

```
mkdir -p ~/.k8senv/bin
```

2. Download `k8senv` tool into `.k8senv/bin` directory

[amd64](https://github.com/navilg/k8senv/releases/latest/download/k8senv-linux-amd64) Intel or AMD 64-Bit CPU

Download latest `k8senv` tool:
```
cd ~/.k8senv/bin
curl -L https://github.com/navilg/k8senv/releases/latest/download/k8senv-linux-amd64 -o k8senv
chmod +x k8senv
```

Download specific version of `k8senv`. For e.g. To download version `v1.0.2`:

```
cd ~/.k8senv/bin
curl -L https://github.com/navilg/k8senv/releases/download/v1.0.2/k8senv-linux-amd64 -o k8senv
chmod +x k8senv
```

[arm64](https://github.com/navilg/k8senv/releases/latest/download/k8senv-linux-arm64) Arm-based 64-Bit CPU (i.e. in Raspberry Pi)

Download latest `k8senv` tool:
```
cd ~/.k8senv/bin
curl -L https://github.com/navilg/k8senv/releases/latest/download/k8senv-linux-arm64 -o k8senv
chmod +x k8senv
```

Download specific version of `k8senv`. For e.g. To download version `v1.0.2`:

```
cd ~/.k8senv/bin
curl -L https://github.com/navilg/k8senv/releases/download/v1.0.2/k8senv-linux-arm64 -o k8senv
chmod +x k8senv
```

3. Add `~/.k8senv/bin` directory to your `PATH` environment variable

```
export PATH="$HOME/.k8senv/bin:$PATH"
echo 'export PATH="$HOME/.k8senv/bin:$PATH"' >> ~/.bashrc
hash -r
```

```
which k8senv
# OR
type k8senv
```

## Usage

```bash
k8senv [VERB] [CLIENT] [VERSION]

# [VERB] can be install, use, list or remove
# [CLIENT] can be kubectl, velero or helm
# [VERSION] can be any client's version in format v*.*.* or latest or auto (auto is only supported for kubectl and velero client for install and use subcommands)

examples:

k8senv use kubectl v1.23.2
k8senv install velero v1.8.1
k8senv use velero auto # Automatically detects Velero server version from current context and use same velero client version
k8senv install kubectl latest # To install latest available kubectl
k8senv install kubectl auto # Automatically detects Kubernetes version from current context and downloads same kubectl version
```

Examples:

**Install a kubectl version**

Any of below commands can be used to download 1.26.2 version of kubectl

```
k8senv install kubectl v1.26.2
k8senv install kubectl 1.26.2
k8senv kubectl install v1.26.2
k8senv install kubectl 1.26.2 --overwrite   # Installs even if it already exists
k8senv install kubectl latest               # Installs latest stable version of kubectl
k8s install kubectl v1.19.2 --timeout=300   # Install 1.19.2 with timeout of 300 seconds. Default timeout is 120 seconds.
k8senv install kubectl auto # Get Kubernetes version from current context and Install same version of kubectl
```

**List all installed version of kubectl**

Any of below commandds can be used to list all kubectl client's version installed by k8senv.

```
k8senv list kubectl
k8senv kubectl list
```

**Switch to a version of kubectl**

Any of below commands can be used to switch kubectl version to 1.26.2. If version is not available, It will install it automatically.

```
k8senv use kubectl v1.26.2
k8senv use kubectl 1.26.2
k8senv kubectl use v1.26.2
k8senv use kubectl auto
```

If you were using system installed version of `kubectl` in same shell session, you will need to clear the cached path of the kubectl using below command.

```
hash -d kubectl
```

**Unuse/Disable k8senv managed kubectl**

Any of the below command can be used to unuse or disable k8senv managed kubectl without uninstalling it. This will reset the system to use system installed kubectl, if present.

```
k8senv unuse kubectl
k8senv kubectl unuse
```

To clear the cached k8senv path of kubectl, you will need to clear it using below command before you can use system installed version of the tool.

```
hash -d kubectl
```

**Remove an existing version of kubectl**

Any of below commands can be used to remove kubectl version 1.26.2.

```
k8senv remove kubectl v1.26.2
k8senv remove kubectl 1.26.2
k8senv kubectl remove v1.26.2
```

**Similar command can be used to install, use, list and remove velero and helm clients.**

For e.g.

```
k8senv install helm v3.10.2
k8senv remove velero 1.10.1
```

## Demo

[![Demo](https://asciinema.org/a/dSPtu0bAPvPFxjhqtJR3LNC89.svg)](https://asciinema.org/a/dSPtu0bAPvPFxjhqtJR3LNC89)

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