Kafka on Kubernetes: Does it really have to be "The Hard Way"? (Viktor Gamov and Michael Ng, Confluent) Kafka Summit NYC 2019

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When it comes to choosing a distributed streaming platform for real-time data pipelines, everyone knows the answer: Apache Kafka! And when it comes to deploying applications at scale without needing to integrate different pieces of infrastructure yourself, the answer nowadays is increasingly Kubernetes. However, with all great things, the devil is truly in the details. While Kubernetes does provide all the building blocks that are needed, a lot of thought is required to truly create an enterprise-grade Kafka platform that can be used in production. In this technical deep dive, Michael and Viktor will go through challenges and pitfalls of managing Kafka on Kubernetes as well as the goals and lessons learned from the development of the Confluent Operator for Kubernetes. NOTE: This talk will be delivered with Michael Ng, product manager, Confluent

Technologie

@gamussa | #kafkasummit | @ConfluentINc
Kafka on Kubernetes:
Does it really have to be
«The Hard Way»?
April, 2019 / New York, 2019
@gamussa | #kafkasummit | @ConfluentINc

Raffle, yeah 🚀
Follow @gamussa @confluentinc
📸 🖼 👬
Tag @gamussa
With #kafkasummit

@gamussa | #kafkasummit | @ConfluentINc
3
Evolution of #devkafkaops
Shell scripts
ansible/chef
Docker
Kubernetes

@gamussa | #kafkasummit | @ConfluentINc
4

@gamussa | #kafkasummit | @ConfluentINc
5
🙋

@gamussa | #kafkasummit | @ConfluentINc
6
Who run stateless
workloads in Kubernetes?
Who thinks it’s a good
idea?
Who run stateful
workloads in Kubernetes?
Who thinks it’s a good
idea?
🙋

@gamussa | #kafkasummit | @ConfluentINc
7
kafkaesque world of Kafka on
Kubernetes

@gamussa | #kafkasummit | @ConfluentINc
8
Well, it’s tricky ©
Translating an existing architecture to Kubernetes
External access to brokers and other components
Persistent Storage options on prem and clouds
Security Configuration and Upgrades
#devkafkaops

@gamussa | #kafkasummit | @ConfluentINc
9
We just need to
deploy Kafka on
Kubernetes

@gamussa | #kafkasummit | @ConfluentINc
10
We will use
confluentinc/cp-helm-
charts

@gamussa | #kafkasummit | @ConfluentINc
11
Helm Charts is just a GO
Templates.
How Charts help with
rolling restart?

@gamussa | #kafkasummit | @ConfluentINc
12
We will use
StatefulSets
with OrderedReady

@gamussa | #kafkasummit | @ConfluentINc
13
We need SRE /
Operator knowledge to
manage the platform.
You need Operator!

@gamussa | #kafkasummit | @ConfluentINc
14

@gamussa | #kafkasummit | @ConfluentINc
15
Show me your
Operator

@gamussa | #kafkasummit | @ConfluentINc
16
Demo

@gamussa | #kafkasummit | @ConfluentINc
17
DO KAFKA ON KUBERNETES DEMO
AND EVERYONE LOOSES THEIR MIND

@gamussa | #kafkasummit | @ConfluentINc
18
What just happened?
ZK and Kafka deployed
Security with TLS is configured
External access is configured
Monitoring is enabled

@gamussa | #kafkasummit | @ConfluentINc
19
Confluent Operator - Automated
Security Configuration
SASL PLAIN and Mutual TLS Authentication
Automate configuration of truststores and
keystores with secret objects
Automate configuration of Kafka and all
Confluent Platform Components

@gamussa | #kafkasummit | @ConfluentINc
20
Confluent Operator - Scale
Automate Scaling:
Spin up new brokers, connect workers easily
Distribute partitions to new brokers:
Determine balancing plan
Execute balancing plan
Monitor Resources

@gamussa | #kafkasummit | @ConfluentINc
21
Be like Justin!

@gamussa | #kafkasummit | @ConfluentINc
22
Rolling Upgrade
Kafka Broker Upgrades:
1. Stop the broker, upgrade
Kafka
2. Wait for Partition Leader
reassignment
3. Start the upgraded
broker
4. Wait for zero under-
replicated partitions
5. Upgrade the next broker

@gamussa | #kafkasummit | @ConfluentINc
23
Will it fly?
vs.

@gamussa | #kafkasummit | @ConfluentINc
24
GA Plans● We are in private Preview
Release now
● 24 customers testing the
Operator in Preview:
● Global customers
● Banks, Fin Tech,
Retailers, Consumer Tech
● We are in the final
stages of Preview and
about to launch soon

@@gamussa | #kafkasummit | @ConfluentINc
Thanks!
@gamussa
viktor@confluent.io
michael.ng@confluent.io
https://slackpass.io/confluentcommunity
#kubernetes

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