Using Helm Set Command

To pass a simple key/value

Example:

prometheus:
  prometheusSpec:
    externalLabels:
      cluster: demo

Solution:

helm install foo \
  --set prometheus.prometheusSpec.externalLabels.cluster=demo

To pass array values via ` — set` command

Example:

env:
  - name: cluster
    value: demo
  - name: region
    value: uswest

Solution:

helm install foo \
  --set env[0].name="cluster",env[0].value="demo" \
  --set env[1].name="region",env[0].value="uswest"