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==Introduction== <!--T:1-->
In this documentation we will see how to deploy and administer a kubernetes cluster with the microk8s solution. <br>
The advantage of the latter is that it is an all-in-one solution that makes installation and administration of the solution much easier.<br>

If you want to install kubernetes "directly" without this solution, you can see our FAQ [[Deployer_un_cluster_Kubernetes|suivante]].

Setting up a cluster of this type requires at least three nodes, our example described in this page uses four that we will name here: 
* microk8stest01
* microk8stest02
* microk8stest03

==Type of equipment for this type of configuration== <!--T:2-->
This type of configuration is feasible on all of Ikoula's solutions, whether it be: 
* The [https://www.ikoula.com/fr/serveur-dedie dedicated solutions], 
* The [https://www.ikoula.com/fr/serveur-virtuel Flex virtual solutions], 
If your need is to run microservices or a cluster with a large number of nodes, the [https://www.ikoula.com/fr/raspberry-pi-4-micro-serveur solution Micro Server Raspberry PI] is also possible.

==Procedures== <!--T:3-->
The whole procedure below is done on an Ubuntu 20.04 system.

 ===Installation== = <!--T:4-->
The installation of microk8s is very simple and is done as follows (add sudo su the command is not done as root): 
<pre>
snap install microk8s --classic
</pre>

The installation and configuration will then be done automatically (about 2-3 minutes) and then provide the following output: <br>
[[File:Microk8s01.JPG]]

 ===Setting up the cluster== = <!--T:5-->
Setting up the cluster is also as simple as this: 
* Run the following command on one of the nodes (here 01): 
<pre>
microk8s add-node
</pre>

[[File:Microk8s02.JPG]]

You must then copy the command provided (if you have several IPs/networks, select the one allowing your servers to communicate with each other).<br>
Then execute this command on your second server: <br>
[[File:Microk8s03.JPG]]

Once the operation is completed for the second server, you must do the same operation for the third server (from the beginning in order to generate a new command via the add-node).

 ===Checking the state of the cluster== = <!--T:5-->
It is possible to check the status of the microk8s cluster via the command: 
<pre>
microk8s status --wait-ready
</pre>

If everything is OK, you should get the following result: <br>
[[File:Microk8s04.JPG]]

 ===Remove a node from the cluster == = <!--T:5-->
Removing a node from the cluster is done via the command: 
<pre>
microk8s leave
</pre>

[[File:Microk8s05.JPG]]

 ===Activation of the addons integrated in microk8s == = <!--T:5-->
The basic microk8s contains the following addons: 

[[File:Microk8s06.JPG]]

You can install / activate an addon simply via the command: 
<pre>
microk8s enable NOM_DE_LADDON
</pre>

<!--T:4-->
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