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https://formulae.brew.sh/formula/k3sup

https://github.com/alexellis/k3sup

bootstrap K3s over SSH in < 60s 🚀

k3sup is a light-weight K8S utility to get from zero to KUBECONFIG with k3s on any local VM or remote VM. All you need is ssh access and the k3sup binary to get kubectl access immediately.

The K8S tool is written in Go and is cross-compiled for Linux, Windows, macOS and even on Raspberry Pi.

How do you say it? Ketchup, as in tomato.

What's this for? 💻 This tool uses ssh to install k3s to a remote Linux host. You can also use it to join existing Linux hosts into a k3s cluster as agents. First, k3s is installed using the utility script from Rancher, along with a flag for your host's public IP so that TLS works properly. The kubeconfig file on the server is then fetched and updated so that you can connect from your laptop using kubectl.

You may wonder why a tool like this needs to exist when you can do this sort of thing with bash.

k3sup was developed to automate what can be a very manual and confusing process for many developers, who are already short on time. Once you've provisioned a VM with your favourite tooling, k3sup means you are only 60 seconds away from running kubectl get pods on your own computer. If you are a local computer, you can bypass SSH with k3sup install –local

• Bootstrap Kubernetes with k3s onto any VM with k3sup install - either manually, during CI or through cloud-init
• Get from zero to kubectl with k3s on Raspberry Pi (K8S RPi), k3s on VMs, k3s on AWS EC2, k3s on Packet bare-metal, k3s on DigitalOcean, k3s on Civo, k3s on Scaleway, and others
• Build a HA, multi-master (server) cluster
• Fetch the KUBECONFIG from an existing k3s cluster
• Join nodes into an existing k3s cluster with k3sup join

Homebrew on macOS

brew install k3sup

Running `brew update –auto-update`…

=⇒ Auto-updated Homebrew!

Updated 1 tap (homebrew/core).

You have 1 outdated formula installed.

You can upgrade it with brew upgrade or list it with brew outdated.

=⇒ Downloading https://ghcr.io/v2/homebrew/core/k3sup/manifests/0.12.10

=⇒ Downloading https://ghcr.io/v2/homebrew/core/k3sup/blobs/sha256:5ceae0674f5361d7414923f69f479456490454ef8c821566422d90d06825dc23

=⇒ Pouring k3sup–0.12.10.monterey.bottle.tar.gz

=⇒ Caveats

zsh completions have been installed to:

/usr/local/share/zsh/site-functions

=⇒ Summary

🍺 /usr/local/Cellar/k3sup/0.12.10: 8 files, 5.5MB

=⇒ Running `brew cleanup k3sup`…

Disable this behaviour by setting HOMEBREW_NO_INSTALL_CLEANUP.

Hide these hints with HOMEBREW_NO_ENV_HINTS (see `man brew`).

k3sup –help Usage:

 k3sup [flags]
 k3sup [command]

Examples:

 # Install k3s on a server with embedded etcd
 k3sup install \
   --cluster \
   --host $SERVER_1 \
   --user $SERVER_1_USER \
   --k3s-channel stable

 # Join a second server
 k3sup join \
   --server \
   --host $SERVER_2 \
   --user $SERVER_2_USER \
   --server-host $SERVER_1 \
   --server-user $SERVER_1_USER \
   --k3s-channel stable

 # Join an agent to the cluster
 k3sup join \
   --host $SERVER_1 \
   --user $SERVER_1_USER \
   --k3s-channel stable

🐳 k3sup needs your support: https://github.com/sponsors/alexellis

Available Commands:

 completion  Generate the autocompletion script for the specified shell
 help        Help about any command
 install     Install k3s on a server via SSH
 join        Install the k3s agent on a remote host and join it to an existing server
 ready       Check if a cluster is ready using kubectl.
 update      Print update instructions
 version     Print the version

Flags:

 -h, --help   help for k3sup

Use “k3sup [command] –help” for more information about a command. bowman@a4ra8pa2ch7an6ad9hi ~ % >….

 # Join a second server
 k3sup join \
   --server \
   --host $SERVER_2 \
   --user $SERVER_2_USER \
   --server-host $SERVER_1 \
   --server-user $SERVER_1_USER \
   --k3s-channel stable

 # Join an agent to the cluster
 k3sup join \
   --host $SERVER_1 \
   --user $SERVER_1_USER \
   --k3s-channel stable

🐳 k3sup needs your support: https://github.com/sponsors/alexellis

Available Commands:

 completion  Generate the autocompletion script for the specified shell
 help        Help about any command
 install     Install k3s on a server via SSH
 join        Install the k3s agent on a remote host and join it to an existing server
 ready       Check if a cluster is ready using kubectl.
 update      Print update instructions
 version     Print the version

Flags:

 -h, --help   help for k3sup

Homebrew on Linux

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