Some problems on elasticsearch_6.3.1 docker

I have installed repository-s3 and modify elasticsearh.yml, But I don't want to restart container
I can't find any way

You need to restart if you want the changes made in the config file read.

If I only installed repository-s3,must I restart ?

I want to backup my data of elasticsearch to s3. I can't restart the cluster,because the cluster is very important for our team.
Can you give me some good ideas? best wishs.

Yes.

You can do a rolling upgrade hopefully.

Should I install repository-s3 on every eslasticsearch server for backupping data of elasticsearch to s3 ?

Yes. https://www.elastic.co/guide/en/elasticsearch/plugins/current/repository-s3.html says:

The plugin must be installed on every node in the cluster, and each node must be restarted after installation.

Thank you

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