We need to expose environment variables in the cluster spec and then merge those with the required env vars. See https://github.com/humio/humio-operator/pull/4?email_token=AANGTFJBKNOPM3SIYERTV6TRGYVMBA5CNFSM4LEWIIIKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEOLFIVI#discussion_r391348047 for more context.