I have deployed my app on Minikube… and now what?

Kubernetes: Beyond Minikube Horacio Gonzalez @LostInBrittany

Who are we? Introducing myself and introducing OVH OVHcloud

Horacio Gonzalez @LostInBrittany Spaniard lost in Brittany, developer, dreamer and all-around geek Flutter

OVHcloud: A Global Leader 250k Private cloud VMs running 1 Dedicated IaaS Europe 30 Datacenters Own 20Tbps Hosting capacity : 1.3M Physical Servers 360k Servers already deployed Netwok with 35 PoPs

1.3M Customers in 138 Countries

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Orchestrating containers Like herding cats… but in hard mode!

From bare metal to containers Another paradigm shift

Containers are easy… For developers

Less simple if you must operate them Like in a production context

And what about microservices? Are you sure you want to operate them by hand?

Taming microservices with Kubernetes

Kubernetes Way more than a buzzword!

Masters and nodes

Some more details

Desired State Management

Extending Kubernetes

Multi-environment made easy Dev, staging, prod, multi-cloud…

Declarative infrastructure Multi-environment made easy

Having identical, software defined environments

I have deployed on Minikube, woah! A great fastlane into Kubernetes

Running a full K8s in your laptop A great learning tool

Your laptop isn’t a true cluster Don’t expect real performances

Beyond the first deployment So I have deployed my distributed architecture on K8s, everything is good now, isn’t it?

Minikube is only the beginning

From Minikube to prod A journey not for the faint of heart

Kubernetes can be wonderful For both developers and devops

But it comes with a price…

Describing some of those traps To ease and empower your path to production

The truth is somewhere inside…

The network is going to feel it…

The storage dilemma

The ETCD vulnerability

Security Hardening your Kubernetes

The security journey

Kubernetes is insecure by design It’s a feature, not a bug. Up to K8s admin to secure it according to needs

Not everybody has the same security needs

Kubernetes allows to enforce security practices as needed

Listing some good practices

Close open access Close all by default, open only the needed ports Follow the least privileged principle

Define and implement RBAC According to your needs

Define and implement network policies

Use RBAC and Network Policies to isolate your sensitive workload

Always keep up to date Both Kubernetes and plugins

And remember, even the best can get hacked Remain attentive, don’t get too confident

Extensibility Enhance your Kubernetes

Kubernetes is modular Let’s see how some of those plugins can help you

Helm A package management for K8s

Complex deployments

Using static YAML files

Complex deployments

Istio A service mesh for Kubernetes… and much more!

Istio: A service mesh… but not only

Service discovery

Traffic control

Encrypting internal communications

Routing and load balancing

Rolling upgrades

A/B testing

Monitoring your cluster

Velero Backing up your Kubernetes

Kubernetes: Desired State Management

YAML files allows to clone a cluster

But what about the data?

Velero Backup and migrate Kubernetes applications and their persistent volumes

S3 based backup On any S3 protocol compatible store

Backup all or part of a cluster

Schedule backups

Backups hooks

Conclusion And one more thing…

Kubernetes is powerful It can make Developers’ and DevOps’ lives easier

But there is a price: operating it Lot of things to think about

We have seen some of them

One more thing… Who should do what?

Different roles Each role asks for very different knowledge and skill sets

Most companies don’t need to operate the clusters As they don’t build and rack their own servers!

If you don’t need to build it, choose a certified managed solution You get the cluster, the operator get the problems

Like our OVH Managed Kubernetes Made with 💗 by the Platform team

Do you want to try? Send me an email to get some vouchers… horacio.gonzalez@corp.ovh.com

Thank you for listening