Link: https://youtu.be/XRD5-V6907A https://go.dok.community/slack https://dok.community/ From the DoK Day EU 2022 (https://youtu.be/Xi-h4XNd5tE) Postgres should run inside your Kubernetes cluster. Yes, inside, not outside Kubernetes. After all, a database should be seen as an application, a special type of application - for which it is legitimate to require an additional level of care and attention. However, the small price you pay for this is worth the return on investment that your organization receives by running microservice applications, plus database combos, inside your Cloud Native infrastructure. In this session, I will cover why it is important to make such a decision. Discover the challenges and the opportunities that running Postgres inside Kubernetes presents. I will discuss what we all expect from a good Postgres operator, including self-healing, high availability, scalability, backup and recovery, performance, and - last but not least - security. I will then go beyond technical aspects to spark conversations about the holistic improvements that running a Cloud Native database brings to your organization. ----- A long time open source programmer and entrepreneur, Gabriele has a degree in Statistics from the University of Florence. After having consistently contributed to the growth of 2ndQuadrant and its members through nurturing a lean and devops culture, he is now leading the Cloud Native initiative at EDB. Gabriele lives in Prato, a small but vibrant city located in the northern part of Tuscany, Italy - known for having hosted the first European PostgreSQL conferences. His second home is Melbourne, Australia, where he studied at Monash University and worked in the ICT sector. He loves playing the Blues with his Fender Stratocaster, but his major passions are called Elisabeth and Charlotte!

1. Why run
Postgres in
Kubernetes?
Gabriele Bartolini, VP & CTO of Cloud Native at EDB
DoK Day EU 2022 @ KubeCon - May 16
#DOKCDAY #CloudNativePG

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About me
Gabriele Bartolini
● VP and CTO of Cloud Native at EDB
○ Previously at 2ndQuadrant, from 2008 to 2020
● PostgreSQL user since ~2000
○ Community member since 2006
○ Co-founder of PostgreSQL Europe
● DevOps evangelist
● Open source contributor
○ Barman
○ …
2
Twitter: @_GBartolini_ / @EDBPostgres

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Important announcement
in this presentation!

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What I won’t be covering in this presentation
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● Introduction to PostgreSQL
● Why Postgres is the most popular database in VM and bare metal contexts
● The rise of stateful workloads in Kubernetes
○ This is DoK Day after all!
● The operator pattern
Due to time constraints

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6. “
PostgreSQL and Kubernetes complement
each other, potentially bringing the best
overall experience of a PostgreSQL
database out there
Gabriele Bartolini, VP Cloud Native at EDB

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The need for a good Postgres operator
Covering all aspects of the lifecycle of a database, including:
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● PostgreSQL native streaming replication
● Declarative configuration
● Container immutability
● Integration with the Kubernetes API server
○ Immediate detection of failures via liveness and readiness probes
○ Prompt reaction for self-healing, including automated failover
● Support for Continuous Backup and Point In Time Recovery (PITR)
○ Global RPO consistently below 5/10 minutes!
● Pervasive security
● Rolling updates
● Ensures seamless integration of PostgreSQL clusters in the Kubernetes infrastructure:
○ Monitoring, alerting, logging, audit

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Why run Postgres in Kubernetes?

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Announcing CloudNativePG
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Originally created and sponsored by
A new open source operator managing Postgres workloads
● Website and docs: cloudnative-pg.io
● Github repository: github.com/cloudnative-pg/cloudnative-pg
● License: Apache License 2.0
● Owned by an openly governed and vendor-neutral community
○ Join now!
○ Enter the slack channel
○ Follow us on Twitter (@CloudNativePG)
● We have officially applied for the CNCF Sandbox
○ We need your help and support!

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Declarative configuration
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# Postgres cluster with 1 primary and 2 replicas
# each with 10GB storage
apiVersion: postgresql.cnpg.io/v1
kind: Cluster
metadata:
name: acdc
spec:
instances: 3
storage:
size: 10Gi

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Freedom of choice
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Postgres in Kubernetes (with CloudNativePG) reduces risk of vendor lock-in
● Run Kubernetes everywhere you want
○ On premise, in the public cloud, on both (hybrid cloud), on different cloud providers (multi-cloud)
● Manage Kubernetes by yourself or let others do it for you
● Manage Postgres by yourself, or rely on a third party organization
● Adopt vanilla Kubernetes or a third party distribution
● Run Kubernetes on VM-based environments or bare metal
● Run Postgres in:
○ shared architectures
○ shared nothing architectures
It’s your choice!

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Thank you!
EDB: enterprisedb.com
CloudNativePG: cloudnative-pg.io
If you are in Valencia for KubeCon 2022,
come and visit us at the EDB stand!