How to do a simple edit in elasticsearch.yml in a docker container?

问题

I am using docker-compose as in https://github.com/davidefiocco/dockerized-elasticsearch-indexer/blob/master/docker-compose.yml to initialize a containerized elasticsearch index.
Now, I would like to set a larger value for indices.query.bool.max_clause_count than the default setting using a elasticsearch.yml config file.

So far I tried to add in the docker-compose.yml a volume with:

services:
   elasticsearch:
      volumes:
        - ./elasticsearch/config/elasticsearch.yml

(and variations thereof) trying to point to a elasticsearch.yml file (that I would like to ship with the rest of the files) with the right max_clause_count setting, but to no avail.

Can someone point me to the right direction?

回答1:

You can mount the host's directory containing the elasticsearch.yml into the container using

services:
   elasticsearch:
      volumes:
        - path_to/custom_elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml:ro

回答2:

One workaround to perform that (trivial) modification to elasticsearch.yml in the container is to modify directly a relevant Dockerfile with the syntax

USER root
RUN echo "indices.query.bool.max_clause_count: 1000000" >> /usr/share/elasticsearch/config/elasticsearch.yml

so to append the desired custom value.

来源：https://stackoverflow.com/questions/49751843/how-to-do-a-simple-edit-in-elasticsearch-yml-in-a-docker-container