MicroK8s on Linux (online mode)
Installation and setup for MicroK8s on Linux distributions.
Ubuntu
Install MicroK8s:
Open a terminal and execute the following command to install MicroK8s:CODEsudo snap install microk8s --classic --channel=1.25
If snap is not installed on your system, follow the instructions here to install it.
Join the MicroK8s group:
MicroK8s creates a user group to enable seamless command execution. Add your user to this group and set the correct permissions for the.kube
caching directory with:CODEsudo usermod -a -G microk8s $USER sudo chown -f -R $USER ~/.kube
Re-login or restart your session to apply the group changes:
- CODE
su - $USER
Check MicroK8s status:
Ensure MicroK8s is correctly installed and ready by checking its status:CODEmicrok8s status --wait-ready
Enable add-ons:
Enable essential add-ons for DCT deployment:CODEmicrok8s enable hostpath-storage microk8s enable helm microk8s enable dns microk8s enable ingress
Create an alias for
kubectl
andhelm
Facilitate command usage with an alias formicrok8s kubectl
andmicrok8s helm
CODEecho "alias kubectl='microk8s kubectl'" >> ~/.bash_aliases echo "alias helm='microk8s helm'" >> ~/.bash_aliases source ~/.bash_aliases
CentOS and Red Hat
For CentOS and Red Hat, the installation process diverges primarily due to the absence of snap
by default.
Enable
snapd
:
First, enable the EPEL repository and installsnapd
:CODEsudo yum install epel-release sudo yum install snapd
Then, start and enable
snapd
:
- CODE
sudo systemctl enable --now snapd.socket
For CentOS, you may also need to enable classic
snap
support by creating a symbolic link:
- CODE
sudo ln -s /var/lib/snapd/snap /snap
Install MicroK8s:
Withsnapd
enabled, you can now install MicroK8s usingsnap
:CODEsudo snap install microk8s --classic --channel=1.25
Group and permissions:
Follow the same steps as for Ubuntu to add your user to the MicroK8s group and adjust permissions for the.kube
directory.Check status and enable add-ons:
Verify MicroK8s installation and enable the necessary add-ons as outlined in the Ubuntu section.Alias for
kubectl
andhelm
Create and source the alias for kubectl and helm as described for Ubuntu.