Elasticsearch docker-entrypoint.sh script overwrite

NK2812 · December 22, 2020, 6:07pm

Hi,

I need to run few commands when container starts, so I would like add those commands in docker-entrypoint.sh script.

I am using Elasticsearch version 7.9.2, I tried to create the cluster without adding my custom commands in the docker-entrypoint.sh script but it is failing and if I don't specify the entry point it is creating cluster. I need to mention entrypoint as I would need to run few commands.

Here is my docker file,

FROM docker.elastic.co/elasticsearch/elasticsearch:7.9.2

ENTRYPOINT ["/usr/local/bin/docker-entrypoint.sh"]

CMD ["eswrapper"]

Error message
java.lang.RuntimeException: can not run elasticsearch as root
at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:111)
at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:178)
at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:393)
at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:170)
at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:161)
at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86)
at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:127)
at org.elasticsearch.cli.Command.main(Command.java:90)
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:126)

Copied the docker-entrypoint.sh content from here

github.com

elastic/elasticsearch/blob/master/distribution/docker/src/docker/bin/docker-entrypoint.sh

#!/bin/bash
set -e

# Files created by Elasticsearch should always be group writable too
umask 0002

# Allow user specify custom CMD, maybe bin/elasticsearch itself
# for example to directly specify `-E` style parameters for elasticsearch on k8s
# or simply to run /bin/bash to check the image
if [[ "$1" == "eswrapper" || $(basename "$1") == "elasticsearch" ]]; then
  # Rewrite CMD args to remove the explicit command,
  # so that we are backwards compatible with the docs
  # from the previous Elasticsearch versions < 6
  # and configuration option:
  # https://www.elastic.co/guide/en/elasticsearch/reference/5.6/docker.html#_d_override_the_image_8217_s_default_ulink_url_https_docs_docker_com_engine_reference_run_cmd_default_command_or_options_cmd_ulink
  # Without this, user could specify `elasticsearch -E x.y=z` but
  # `bin/elasticsearch -E x.y=z` would not work. In any case,
  # we want to continue through this script, and not exec early.
  set -- "${@:2}"
else

This file has been truncated. show original

Please help me out why it is failing

system · January 19, 2021, 6:07pm

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Elasticsearch docker-entrypoint.sh script overwrite

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