I want to try Kubernetis for a solution that is distributed across multiple data centers for continuous availability. MicroK8s from Canonical has some features that I think make it worth a look for this project. My first step is to get an instance running on my Mac so I can do some initial experimentation. If that first step works, I'll try a Raspberry Pi based cluster and experiment with network, power and disconnected drive failures.
Basic install notes for my M1 based Mac are here.
I started with homebrew and ended up with an error:
launch failed: instance "microk8s-vm" already exists
It's possible I tried MicroK8s in the past, maybe even before moving to an M1 machines, so it seems I need to clean things up and maybe get a fresh start. These are my notes and references just in case I end up in the same place again.
> multipass info --all
Name: primary
State: Running
IPv4: 192.168.64.2
Release: Ubuntu 22.04.2 LTS
Image hash: f7555cd22ead (Ubuntu 22.04 LTS)
CPU(s): 1
Load: 0.00 0.00 0.00
Disk usage: 1.6GiB out of 4.8GiB
Memory usage: 137.3MiB out of 962.4MiB
Mounts: --
Name: exalted-jaybird
State: Running
IPv4: 192.168.64.6
Release: Ubuntu 22.04.2 LTS
Image hash: f7555cd22ead (Ubuntu 22.04 LTS)
CPU(s): 1
Load: 0.00 0.00 0.00
Disk usage: 1.6GiB out of 4.8GiB
Memory usage: 157.1MiB out of 962.4MiB
Mounts: --
Name: microk8s-vm
State: Unknown
IPv4: --
Release: --
Image hash: f7555cd22ead (Ubuntu 22.04 LTS)
CPU(s): --
Load: --
Disk usage: --
Memory usage: --
Mounts: --
Suggests there is indeed an instance of microk8s already running.
> microk8s enable dashboard
MicroK8s is not running. Please run `microk8s start`.
> microk8s start
exec failed: Cannot retrieve credentials in unknown state
An error occurred when trying to execute 'sudo microk8s.start' with 'multipass': returned exit code 2.
Did some searching and tried
> multipass delete microk8s-vm
> multipass purge
> multipass list
Name State IPv4 Image
primary Running 192.168.64.2 Ubuntu 22.04 LTS
exalted-jaybird Running 192.168.64.6 Ubuntu 22.04 LTS
So clear everything and start again...
multipass delete exalted-jaybird
multipass purge
Make sure the packaged version of multipass isn't installed
sudo sh "/Library/Application Support/com.canonical.multipass/uninstall.sh"
Remove multipass and microk8s from homebrew
brew uninstall --zap multipass
brew uninstall --zap ubuntu/microk8s/microk8s
Restart for good measure and then start again
> brew install ubuntu/microk8s/microk8s
> microk8s install
MicroK8s is up and running. See the available commands with `microk8s --help`.
> microk8s dashboard-proxy
Checking if Dashboard is running.
sudo: microk8s.enable: command not found
An error occurred when trying to execute 'sudo microk8s.enable dashboard' with 'multipass': returned exit code 1.
Closer, microk8s is running, but I still cannot execute any commands.
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