I would like to pass array as property in yaml (values file) in Helm. What I tried:
Attempt.
elasticsearch: uri: "[\"127.0.0.1:9200\",\"127.0.0.2:9200\"]"
Error:
ReadString: expects " or n, but found [, error found in #10 byte of ...|RCH_URL":["127.0.0.1|..., bigger context ...|{"apiVersion":"v1","data":{"ELASTIC_SEARCH_URL": ["127.0.0.1:9200","127.0.0.2:9200"],"LOGS_ENV_PREFI|...
Attempt. According to official helm site how to pass array
elasticsearch:
--set uri={127.0.0.1:9200,127.0.0.2:9200}
With error:
error converting YAML to JSON: yaml: line 15: mapping values are not allowed in this context
Attempt.
elasticsearch:
uri:
- 127.0.0.1:9200
- 127.0.0.2:9200
Failed with the same exception as 1.
EDIT: Actually in my case the helm values were not used in YAML file then, so I needed another format and finally solution was to pass uri as string with single quote:
elasticsearch: uri: '["127.0.0.1:9200","127.0.0.2:9200"]'
Nevertheless @Marcin answer was correct.
Helm Rendering of values from values.yaml to config.yaml :
values.yaml:
sites:
- dataprovider: abcd
- dataprovider: xyzx
config.yaml:
sites:
{{ toYaml .Values.sites | indent 10 }}
You pass an array of values by using either flow syntax:
elasticsearch: uri: ["127.0.0.1:9200", "127.0.0.2:9200"]
or block syntax:
elasticsearch:
uri:
- 127.0.0.1:9200
- 127.0.0.2:9200
You can then access the values in Helm templates using
rangeUris:{{- range .Values.elasticsearch.uri }} {{.}}{{- end }}
resolves to:
Uris:
127.0.0.1:9200
127.0.0.2:9200