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Kubernetes rocks, but this post exemplifies a complaint of mine: there's a glaring lack of examples of production-capable database deployments. In this Helm ch

by xnxn 10y ago

Kubernetes rocks, but this post exemplifies a complaint of mine: there's a glaring lack of examples of production-capable database deployments. In this Helm chart, your master is a single Pod (which is ephemeral and which you should usually not be creating directly) that stores data in an emptyDir (which is coupled to the lifecycle of the Pod).

alexk 10y ago
Check this out: https://github.com/gravitational/stolon https://github.com/gravitational/stolon this is heavily modified version of https://github.com/sorintlab/stolon https://github.com/sorintlab/stolon K8s-native deployment of PostgreSQL
- drdaeman 10y ago
  Thanks! That was exactly what I was looking for. From a first glance it seems it's well possible to use it with non-k8s environments (like Rancher's Cattle) as well, using Consul and, possibly, a bit of duct tape. But can you please tell what's the general difference between the original and the fork? I see that both are active, but nothing in README tells what one has over another.
  - alexk 10y ago
    It's a bit of a failure on our (gravitational) side as we are moving fast and haven't submitted PR yet. We will definitely try to merge upstream soon though. We've added several features and changes to the code compared to Simone's version: * S3 backup restore feature * RPC to communicate with controller over API * Refactored client and updated the CLI * Updated and slimmed down base images
manojlds 10y ago
Exactly. I was expecting use of the new PetSets. I go and look at Helm charts, and most of them are like some toy project setup.
- lobster_johnson 10y ago
  Petsets are alpha quality (lots of bugs and some missing behaviour in 1.3) and will only reach beta in 1.5, which is probably next year. So it wouldn't really be fair to demo something that cannot be used in production.
  - TheIronYuppie 10y ago
    1.5 is in 3 months :) But you're right it is alpha, and we would not recommend running production workloads on them. Disclosure: I work at Google on Kubernetes

by xnxn 10y ago

alexk 10y ago

Check this out: https://github.com/gravitational/stolon https://github.com/gravitational/stolon this is heavily modified version of https://github.com/sorintlab/stolon https://github.com/sorintlab/stolon K8s-native deployment of PostgreSQL

drdaeman 10y ago
Thanks! That was exactly what I was looking for. From a first glance it seems it's well possible to use it with non-k8s environments (like Rancher's Cattle) as well, using Consul and, possibly, a bit of duct tape. But can you please tell what's the general difference between the original and the fork? I see that both are active, but nothing in README tells what one has over another.
- alexk 10y ago
  It's a bit of a failure on our (gravitational) side as we are moving fast and haven't submitted PR yet. We will definitely try to merge upstream soon though. We've added several features and changes to the code compared to Simone's version: * S3 backup restore feature * RPC to communicate with controller over API * Refactored client and updated the CLI * Updated and slimmed down base images

manojlds 10y ago

Exactly. I was expecting use of the new PetSets. I go and look at Helm charts, and most of them are like some toy project setup.

lobster_johnson 10y ago
Petsets are alpha quality (lots of bugs and some missing behaviour in 1.3) and will only reach beta in 1.5, which is probably next year. So it wouldn't really be fair to demo something that cannot be used in production.
- TheIronYuppie 10y ago
  1.5 is in 3 months :) But you're right it is alpha, and we would not recommend running production workloads on them. Disclosure: I work at Google on Kubernetes