Helm is the package manager for deploying pre-built packages to Kubernetes.
I found the Postgresql package here: https://artifacthub.io/packages/helm/bitnami/postgresql
Follow the TL;DR
helm install my-release oci://registry-1.docker.io/bitnamicharts/postgresql
Looks like has issues:
kubectl describe pod my-release-postgresql-0
Warning FailedScheduling 2m33s default-scheduler 0/1 nodes are available: pod has unbound immediate PersistentVolumeClaims. preemption: 0/1 nodes are available: 1 Preemption is not helpful for scheduling
Well that did not work out. Let's figure out what's wrong.
Seems like it's related to a Persistent Volume Claim. What is that?
A Persistent Volume is a piece of storage in your Kubernetes cluster. It is provisioned by the cluster administrator or dynamically provisioned using a storage class.
It represents a physical storage resource, which can be backed by various storage systems (e.g., NFS, cloud storage like AWS EBS, etc.).
"So a persistent volume (PV) is the "physical" volume on the host machine that stores your persistent data. A persistent volume claim (PVC) is a request for the platform to create a PV for you, and you attach PVs to your pods via a PVC." [1]
References
- Persistent volume vs. persistent volume claim https://stackoverflow.com/questions/48956049/what-is-the-difference-between-persistent-volume-pv-and-persistent-volume-clai
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