Infrastructure design for Kubernetes

Infrastructure Design
for Kubernetes
Guillaume Morini
Senior Platform Architect - EMEA
@GuillaumeMorini
Credits to @cdavisafc and @pczarkowski and @FabioChiodini for a lot of EPIC contents ;)

© Copyright 2019 Dell Inc.3 @GuillaumeMorini
Agenda
■ Intro on Kubernetes
■ User Story
■ Pivotal Container Services
(PKS)

A Production-Grade Container Orchestration System
Portable and extensible open-source platform for managing
containerized workloads.
It aims to provide a platform for automating deployment, scaling, and
operations of application containers across clusters of hosts.
Principle: Manage your applications like Cattle instead of like Pets

Kubernetes 101 - Containers, Runtime and Orchestrator

In other words diagrams….

Some Twitter wisdom…

Kubernetes is a Container Orchestrator

But we need a little bit more to RUN IT in production

It all starts with the people...

Alana, the IT Admin
Day-to-Day:
● Installs and manages
hardware
● Deploys and configures
virtual infrastructure
● Maintains Data Centers
Cares about:
● Storage & Compute
capacity management
● Security / patching
● Upgrades
● Costs and Chargeback
● Full stack stability
● Scalability of infrastructure
● Automation

Cody, the Platform Team
Day-to-Day:
● Stable Platform
● Manage containers
● Execute pipelines
● Monitoring production
workloads
● Create/Manage Clusters
Cares about:
● Latest versions of tech
● Scalability of workloads
● Self-service
● Manage containers
● Speed & Agility
● High Availability
● Consistency
● CVE updates
● Releasing software

Naomi, the App Dev
Day-to-Day:
● Write code/tests
● Build/manage containers
● Execute pipelines
Cares about:
● Latest versions of tech
● Scalability of workloads
● Self-service
● Writing code
● Building containers
● Speed & Agility
● Releasing software
● Access a Kubernetes API

We told everyone how awesome Kubernetes is!
Dev Team NDev Team 1 Dev Team 2
...
Cody: “Can you provision a few clusters?”

We didn’t realize the amount of traffic!
Small
Large
Medium
Cody: “Can you scale it for us?”

Cody: “Can you patch the environment today?”
Heartbleed SpectreMeltdown
Just got the latest CVE report in!

New Version of Kubernetes is out!
1.10.1
1.11
Cody: “I need this new feature...can you upgrade
our cluster today?”

Launch date is next week!
Cody: “How can we expose our services?”

Alana:
Time Out...

How often do we need to update this thing?!?
Alana: How many k8s releases are there each year?
4 times a years for Major release.
50+ times a year for Minor releases!?!?

How many of these things do we have to update?
Allana Cluster NAllana Cluster 1 Allana Cluster 2
...
Alana: How many clusters? How many hosts?

Do we have the capacity for today? Next Month? Next year?
Alana: How much compute & storage will this require?
Alana: Wait, how do I keep this all up to date?

Don’t forget about networking!
Alana: Is my network ready for this?
Alana: Container networking? Can I secure it?

4 K8s updates x (30 clusters x 7 vms) = 840 upgrades
30 clusters x 30 pods = 900
workloads to segment and expose
30 clusters x 7 vms = 210 OS upgrades,
how many linux release this year?
Containers can run with privileged
permissions???!?
Alana: Let’s look at the low end...

Alana:

Calculated Response
Alana: “We need more people!”

But what if...

With Pivotal Container Service we got You covered!!

Alana: “Sure thing!”

DEMO:
Creating Kubernetes Clusters

NOW...
running
on
Pivotal Ready Architecture

vCenter
Elastic
Cloud
Storage
vSAN
ESXi
Validated Design — Pivotal Container Service (PKS) tested
and validated on top of VxRail.
Full Stack Scale — Hyper-converged Infrastructure which
provides robustness, ability to scale out and ease of lifecycle
management
Reference Architectures — Documentation and tools enables
the design and deploy of the architecture in a resilient and
reliable way.
Full Stack Support — Product Support from the underlying
hardware to the physical infrastructure up to the K8s cluster and
containers running in them.
Managed Service — Optional service can be leveraged by
customers to deploy and manage the lifecycle of the Platform.
Scalable Object Storage — Option to utilize Elastic Cloud
Storage (ECS) for S3 compatible object storage that grows with
your workloads.
VxRailManager
Ready Architecture
VxRails
K8s Cluster
K8s ClusterRails
Cluster

v1.9
v1.1
0
v1.1
1
v6.5
v6.5u1
v6.5u2
PKS+PRA: Full Stack Automation & Scale
Kubernetes Releases, OS Updates, CVE patches, Cluster Upgrades
Firmware Updates, Hypervisor Releases, CVE patches
Pivotal
Ready Architecture
OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS OS
Pivotal
Network
LB LB LB LB LB LB LB LB LB LB LB LB

What PKS add to Kubernetes

PKS does for your Kubernetes
what
Kubernetes does for your apps

Call to action
● Come visit our booth at Dell Technologies Forum
● Watch the PKS Youtube videos
● Organize a workshop with dev and ops team
https://www.youtube.com/playlist?list=PLT1zSnR1i6dz9RVMfFUfhk6MtFPCuKuRs

Infrastructure design for Kubernetes

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