Optional parameters in elasticsearch.yml

Elastic Stack Elasticsearch
1

I have parameterized my elasticsearch.yml file like so:

node.name: ${NODE_NAME}

This let's me pass in NODE_NAME as an environment variable when running
ES. I was hoping that if NODE_NAME was undefined, ES would fall back to
the default of picking a dynamic name, but it just dies. Is there any way
to specify an optional syntax for env variables?

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2

You could try using an if statement in your env variable?

On 17 October 2014 06:50, Matt Hughes hughes.matt@gmail.com wrote:

I have parameterized my elasticsearch.yml file like so:

node.name: ${NODE_NAME}

This let's me pass in NODE_NAME as an environment variable when running
ES. I was hoping that if NODE_NAME was undefined, ES would fall back to
the default of picking a dynamic name, but it just dies. Is there any way
to specify an optional syntax for env variables?

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3

Unclear how that would work. Example?

On Thursday, October 16, 2014 6:49:13 PM UTC-4, Mark Walkom wrote:

You could try using an if statement in your env variable?

On 17 October 2014 06:50, Matt Hughes <hughe...@gmail.com <javascript:>>
wrote:

I have parameterized my elasticsearch.yml file like so:

node.name: ${NODE_NAME}

This let's me pass in NODE_NAME as an environment variable when running
ES. I was hoping that if NODE_NAME was undefined, ES would fall back to
the default of picking a dynamic name, but it just dies. Is there any way
to specify an optional syntax for env variables?

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.
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