Get details of a Helm dependency

Question

I look at this help requirement:

dependencies:
  - name: postgresql
    version: 8.6.2
    repository: https://kubernetes-charts.storage.googleapis.com/
    condition: postgresql.installdep.enable

Source: https://github.com/reportportal/kubernetes/blob/master/reportportal/v5/requirements.yaml

Postgres 8 is very very old. I guess this version is just the version of some package.

But how can I get more information about this package?

I look at https://kubernetes-charts.storage.googleapis.com/. But this URL seems made for robots, not for humans.

How can I (as a human) find more details about this dependency?

Answer 1

It looks like you can find the chart here: https://github.com/helm/charts/tree/master/stable/postgresql

It's current version is 8.6.4.

Your dependency looks like it references this PR and this version.

Also, as an aside that refers to the Chart version, not the postgres version. It looks like the current Chart is for postgres 11.

Answer 2

You can use helm dependency update locally: https://helm.sh/docs/helm/helm_dependency_update/

This will download all the dependencies to the ./charts subdir where you can check its contents and default vars.

Answer 3

Requirements.yaml is used to list Chart dependencies. Those dependencies can be built using helm dependency build from requirement.lock file.

Version describes chart version, not the image itself.

All necessary information about the chart are described in values.yaml- you can find there information about images to be installed, it's version etc. In this case it's postgresql:11.7.0.

You can retrieve information about the chart by using helm show values <chart_name> (chart doesn't have to be installed in the cluster) or it can be found on chart's github/ helm hub repository.