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Comment by ZalandoTech | Hacker News Reader

Zalando open source evangelist here. Some of my colleagues are on this thread, taking your questions. Meanwhile, wanted to plug a few other Postgres/K8s projects we're working on:

-- Spilo: HA PostgreSQL cluster using Docker (https://github.com/zalando/spilo)

-- kube-ingress-aws-controller: Configures AWS Load Balancers according to Kubernetes Ingress resources (https://github.com/zalando-incubator/kube-ingress-aws-contro...)

-- external-dns: a Kubernetes Incubator collaboration. Configure external DNS servers (AWS Route53, Google CloudDNS and others) for Kubernetes Ingresses and Services. (https://github.com/kubernetes-incubator/external-dns)

We also have several older Postgres-related tools listed here: http://zalando.github.io/.

Users and contributors very welcome; just drop a line in our projects' Issues Trackers.

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Looking forward to external-dns being merged. DNS records are probably the last thing in our Kubernetes cluster that isn't automated.

I'm still not sold on using ALBs for Ingress resources. ALB is clearly superior to ELB when using them for the same things, but it seems like ALB costs will soar when using ALBs as Ingress controllers since they increased the rule limit and subsequently started charging on them. Still, the alternative of having four layers for every route seems nearly as undesirable. I really don't want ALB -> nginx -> kube-proxy -> container.

This is a bit off topic, but the mentioned Ingress controller (https://github.com/zalando-incubator/kube-ingress-aws-contro...) is not using the ALB rules, it just provisions ALBs with the right SSL certificate and points to some HTTP proxy doing the actual host/path routing (e.g. Skipper). See http://kubernetes-on-aws.readthedocs.io/en/latest/admin-guid...

I am curious did you look at Govenor(postres template for HA with etcd) before writing Patroni?

https://github.com/compose/governor

If you did can you comment on how these might compare and why you decided to write your own? Thanks!

I guess you did not look into Patroni's README, as it states:

> Patroni originated as a fork of Governor, the project from Compose. It includes plenty of new features.

Governor's git repo seems to have no recent activity (last commit 11 months ago).

Indeed I missed that, my bad. But anyway the README states:

>"Patroni originated as a fork of Governor, the project from Compose. It includes plenty of new features."

But it doesn't say what those features are. So I guess I'm curious what those features are without having to watch a whole youtube video. Or why they didn't submit PRs to Govenor for the added functionality.

Compose guys are kind of happy with existing functionality of Governor and didn't really wanted to add something new. That was the main reason of making a fork.

If you read a further comments to this news you can get familiar with the part of new functionality of Patroni comparing to Governor.

Thanks. Yeah I've been making my way through the video - "Elephants on Automatic: HA Clustered PostgreSQL with Helm"

and its discussed at the 15:57 minute mark here if anyone else is interested:

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

Cheers.

You also can have a look on slides of my talk about at PGConf.US 2017: https://www.slideshare.net/AlexanderKukushkin1/patroni-ha-po...

Talk was also recorded but video is not yet published.

And one more thing, you can try to run a Live-Demo the same way as I did it during presentation: https://cyberdemn.blogspot.de/2017/04/patroni-ha-postgresql-...

Oh neat, thanks!

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