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# MVK for pre-production

The **V** in MVK is for *viable*, so why is MVK viable for 3 or more nodes ?

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<img src="/k8s-3.drawio.png">

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why is MVK 'viable' ?

Out of the box K8s examples and some deployments are not useable without other externalities

* Persistent storage - often built in to managed kubernetes cloud platforms
* Ingress - is also provided by cloud providers, K8s does not natively have this
* ETCD is often offered as the 'management plane', again as part of managed kubernetes by cloud providers

K3s does not use k8s traditional 3 node ETCD unless you configure it to do so

MKK's infctl pipelines configure 3 node k3s on all 3 nodes

it also adds Longhorn for persistent storage

ingress is impossible without metallb and some kind of load balancer - traefik being my preference but others could be used, of course

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