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Re: PostgreSQL and Kubernetes

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On 03/30/2017 03:10 AM, Moreno Andreo wrote:

Hi everyone,
    I was googling around while searching stuff to finish my cluster
solution (already running in production in single-server mode) with
barman and pgbouncer, when I ran into this

https://hackernoon.com/postgresql-cluster-into-kubernetes-cluster-f353cde212de

Since I'm on Google Cloud Platform, I thought it would be a good idea to
see what it offers. After a quick read, I found a comment saying
*"There was a series of comments by Kelsey Hightower about running
databases in Kubernetes, both at conferences and on Twitter; he
essentially says that you should absolutely NOT run your database in a
container/kubernetes pod/service/deployment, as databases aren't built
for type of dynamic scheduling that something like kubernetes (or any
other container management solution), due to how they interact with the
filesystem, network stack, and more.*
*Further more, he suggests that because of this lack of integration,
that if you do run your database in kubernetes/docker, you are very
likely to encounter data corruption and data loss"*

What's your advice?

I don't us eKubernetes, but I do know one of the former members of the Postgres Core does:

https://opensource.com/article/17/2/stateful-applications

and delivered a talk at Scale15x on it:

http://www.socallinuxexpo.org/scale/15x/presentations/ccp-containerized-clustered-postgres

https://www.youtube.com/watch?v=mxmZv9xkc8s

Go to about 3 minutes in on the video as there are sound/video issues before that.


Thanks in advance,
Moreno


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Adrian Klaver
adrian.klaver@xxxxxxxxxxx


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