elasticsearch 7x as gitlab service doesn't allow dot in variable name-CodePudding

I'm trying to run elasticsearch 7.0.1 in my gitlab pipeline, here is configuration snippet:

test:
  stage: test
  services:
    - name: docker.elastic.co/elasticsearch/elasticsearch:7.0.1
      alias: elastic
  variables:
    cluster.initial_master_nodes: elastic
    node.name: elastic

But when I run it I get following error message:

/bin/bash: line 82: export: `cluster.initial_master_nodes=elastic': not a valid identifier

It seems that Gitlab uses bash to export variables but bash doesn't allow dots in names. I tried escaping with double underscore but didn't work. Any suggestions?

CodePudding user response：

Variable names with a dot are not valid in sh and bash indeed.

The official documentation has a solution:

Change the setting name to uppercase
Prefix it with ES_SETTING_
Escape any underscores (_) by duplicating them
Convert all periods (.) to underscores (_)

Try variable names (pay attention to double underscores):

ES_SETTING_CLUSTER_INITIAL__MASTER__NODES: elastic
ES_SETTING_NODE_NAME: elastic