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prepare.md

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Prepare

Reqirement

  • multipass
  • kvm and virsh (Optional)
    • Virtual machine with 10GB memory, 6CPU and 50GB disk space

Platform for virtual machine

Multipass: https://multipass.run/docs

  • MacOS
    • Homebrew Installation if need
    /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"
  • Windows
  • Linux

Create virtual machine

This will create a virtual machien which use 22.04 latest/stable image from offical website.

# create vm
multipass launch \
    -c 6 -m 10G -d 50G \
    -n k8s-summit \
    jammy

# list virtual machine
multipass list

# exec into vm
multipass shell k8s-summit

Install microk8s & juju with snap

Inside virtual machine

# List package information and channels
snap info microk8s

sudo snap install microk8s --channel=1.24/stable --classic

# List snap packages & channel
snap list

Insufficient permissions to access MicroK8s

# add the user ubuntu to the 'microk8s' group
sudo usermod -a -G microk8s ubuntu
sudo chown -f -R ubuntu ~/.kube
# reload the user groups or reboot
newgrp microk8s

check status

microk8s status

(Optional) microk8s alias

Add alias in ~/.bash_aliases

alias kubectl='microk8s kubectl'

Configure microk8s

Enable addons dns and hostpath-storage

microk8s status
microk8s enable dns hostpath-storage

# Check
microk8s status --wait-ready

https://microk8s.io/docs/addon-dns https://microk8s.io/docs/addon-hostpath-storage

Check addons status with kubectl

microk8s kubectl rollout status deployments/hostpath-provisioner -n kube-system -w
microk8s kubectl rollout status deployments/coredns -n kube-system -w

Install juju

sudo snap install juju --classic

juju bootstrap controller

In Juju, a controller is the initial cloud instance that is created by the juju client during bootstrapping. It is a central piece of Juju, being responsible for implementing all the changes defined by a Juju user.

juju bootstrap microk8s micro

# Check status
microk8s kubectl get namespace | grep controller | awk '{print $1}' | xargs microk8s kubectl get all -n
juju controllers
juju clouds

References

Microk8s