Helm chart for loki-stack requires template "loki.serviceName"...it does not exist

[dankirkpatrick]

Describe the bug
When installing the helm chart for loki-stack, I get an error that reads:

Error: template: loki-stack/templates/tests/loki-test-pod.yaml:20:25: executing "loki-stack/templates/tests/loki-test-pod.yaml" at <{{template "loki.serviceName" .}}>: template "loki.serviceName" not defined

To Reproduce
Steps to reproduce the behavior:

1. Install the helm chart. Type:

helm install loki -n monitor loki/loki-stack

Expected behavior
The helm chart should install instead of giving an error.

Environment:

• On-premises K8S cluster, provisioned with Kubespray, running on vSphere
• Deployment tool: helm v3

Screenshots, Promtail config, or terminal output

% helm install loki -n monitor loki/loki-stack -f charts/loki/values.yaml
Error: template: loki-stack/templates/tests/loki-test-pod.yaml:20:25: executing "loki-stack/templates/tests/loki-test-pod.yaml" at <{{template "loki.serviceName" .}}>: template "loki.serviceName" not defined

[cyriltovena]

Interesting it seems to work for me. Which commit are you using for the chart ? I tried from the repo and from master.

[shaikatz]

Looks like for some reason loki.serviceName is defined inside promtail helpers instead of loki helpers.
That produce @dankirkpatrick issue, probably he had disabled promtail.

[cyriltovena]

Right and the test is using that. Seems like a bug to fix.

[Tikam02]

Loki-Stack Lint error - git actions failing

[ERROR] templates/: template: loki-stack/templates/tests/loki-test-pod.yaml:22:23: executing "loki-stack/templates/tests/loki-test-pod.yaml" at <.Values.loki.service.port>: nil pointer evaluating interface {}.port

##[error]Process completed with exit code 1.

[jaswanth99999]

This problem is still in chart v2.6.1. Is there any workaround to resolve this?