How to make a docker image in my case?

Question

linux

I want to change the finished image sebp/elk.
To do this, judging by the manual, you need a Dockerfile with the following content:

FROM sebp/elk
WORKDIR ${LOGSTASH_HOME}
RUN gosu logstash bin/logstash-plugin install logstash-input-rss

I need to add a module to the logstash, and if I go into the docker container exec -it bin/bash container_id and do:

service logstash stop
cd /opt/logstash
bin/logstash --modules netflow --setup -M netflow.var.input.udp.port=9966
service logstash start

I get what I need!
How can I make a ready-made image so that I make a container already with this setting?
I try like this:

FROM sebp/elk
  
WORKDIR ${LOGSTASH_HOME}
RUN gosu logstash bin/logstash --modules netflow --setup -M netflow.var.input.udp.port=9966

or like this:

WORKDIR ${LOGSTASH_HOME}
 RUN cd /opt/logstash \
   && bin/logstash --modules netflow --setup -M netflow.var.input.udp.port=9966

The result of this is the same:

Step 3/3 : RUN cd /opt/logstash   && bin/logstash --modules netflow --setup -M netflow.var.input.udp.port=9966
     ---> Running in e68f0025019d
    Sending Logstash's logs to /opt/logstash/logs which is now configured via log4j2.properties
    [2018-05-25T14:09:22,940][INFO ][logstash.modules.scaffold] Initializing module {:module_name=>"fb_apache", :directory=>"/opt/logstash/modules/fb_apache/configuration"}
    [2018-05-25T14:09:22,958][INFO ][logstash.modules.scaffold] Initializing module {:module_name=>"netflow", :directory=>"/opt/logstash/modules/netflow/configuration"}
    [2018-05-25T14:09:23,055][INFO ][logstash.setting.writabledirectory] Creating directory {:setting=>"path.queue", :path=>"/opt/logstash/data/queue"}
    [2018-05-25T14:09:23,059][INFO ][logstash.setting.writabledirectory] Creating directory {:setting=>"path.dead_letter_queue", :path=>"/opt/logstash/data/dead_letter_queue"}
    [2018-05-25T14:09:23,498][WARN ][logstash.config.source.multilocal] Ignoring the 'pipelines.yml' file because modules or command line options are specified
    [2018-05-25T14:09:23,533][INFO ][logstash.agent           ] No persistent UUID file found. Generating new UUID {:uuid=>"9de46a0c-dcba-4a3f-a86b-5f9c7f863c0d", :path=>"/opt/logstash/data/uuid"}
    [2018-05-25T14:09:24,214][INFO ][logstash.runner          ] Starting Logstash {"logstash.version"=>"6.2.3"}
    [2018-05-25T14:09:24,903][INFO ][logstash.agent           ] Successfully started Logstash API endpoint {:port=>9600}
    [2018-05-25T14:09:25,582][ERROR][logstash.modules.kibanaclient] Error when executing Kibana client request {:error=>#<Manticore::SocketException: Connection refused (Connection refused)>}
    [2018-05-25T14:09:25,709][ERROR][logstash.modules.kibanaclient] Error when executing Kibana client request {:error=>#<Manticore::SocketException: Connection refused (Connection refused)>}
    [2018-05-25T14:09:25,876][ERROR][logstash.config.sourceloader] Could not fetch all the sources {:exception=>LogStash::ConfigLoadingError, :message=>"Failed to import module configurations to Elasticsearch and/or Kibana. Module: netflow has Elasticsearch hosts: [\"localhost:9200\"] and Kibana hosts: [\"localhost:5601\"]", :backtrace=>["/opt/logstash/logstash-core/lib/logstash/config/modules_common.rb:99:in `block in pipeline_configs'", "org/jruby/RubyArray.java:1734:in `each'", "/opt/logstash/logstash-core/lib/logstash/config/modules_common.rb:56:in `pipeline_configs'", "/opt/logstash/logstash-core/lib/logstash/config/source/modules.rb:16:in `pipeline_configs'", "/opt/logstash/logstash-core/lib/logstash/config/source_loader.rb:59:in `block in fetch'", "org/jruby/RubyArray.java:2481:in `collect'", "/opt/logstash/logstash-core/lib/logstash/config/source_loader.rb:58:in `fetch'", "/opt/logstash/logstash-core/lib/logstash/agent.rb:148:in `converge_state_and_update'", "/opt/logstash/logstash-core/lib/logstash/agent.rb:90:in `execute'", "/opt/logstash/logstash-core/lib/logstash/runner.rb:348:in `block in execute'", "/opt/logstash/vendor/bundle/jruby/2.3.0/gems/stud-0.0.23/lib/stud/task.rb:24:in `block in initialize'"]}
    [2018-05-25T14:09:25,888][ERROR][logstash.agent           ] An exception happened when converging configuration {:exception=>RuntimeError, :message=>"Could not fetch the configuration, message: Failed to import module configurations to Elasticsearch and/or Kibana. Module: netflow has Elasticsearch hosts: [\"localhost:9200\"] and Kibana hosts: [\"localhost:5601\"]", :backtrace=>["/opt/logstash/logstash-core/lib/logstash/agent.rb:155:in `converge_state_and_update'", "/opt/logstash/logstash-core/lib/logstash/agent.rb:90:in `execute'", "/opt/logstash/logstash-core/lib/logstash/runner.rb:348:in `block in execute'", "/opt/logstash/vendor/bundle/jruby/2.3.0/gems/stud-0.0.23/lib/stud/task.rb:24:in `block in initialize'"]}
    The command '/bin/sh -c cd /opt/logstash   && bin/logstash --modules netflow --setup -M netflow.var.input.udp.port=9966' returned a non-zero code: 1

I know that to run `bin/logstash --modules netflow --setup -M netflow.var.input.udp.port=9966`, kibana and elasticsearch, which are in the sebp/elk container, must be running. Judging by

"Failed to import module configurations to Elasticsearch and/or Kibana. Module: netflow has Elasticsearch hosts: [\"localhost:9200\"] and Kibana hosts: [\"localhost:5601\"]", :backtrace=>["/opt/logstash/logstash-core/lib/logstash/config/modules_common.rb:99:in `block in pipeline_configs'", "org/jruby/RubyArray.java:1734:in `each'", "/opt/logstash/logstash-core/lib/logstash/config/modules_common.rb:56:in `pipeline_configs'", "/opt/logstash/logstash-core/lib/logstash/config/source/modules.rb:16:in `pipeline_configs'", "/opt/logstash/logstash-core/lib/logstash/config/source_loader.rb:59:in `block in fetch'", "org/jruby/RubyArray.java:2481:in `collect'", "/opt/logstash/logstash-core/lib/logstash/config/source_loader.rb:58:in `fetch'", "/opt/logstash/logstash-core/lib/logstash/agent.rb:148:in `converge_state_and_update'", "/opt/logstash/logstash-core/lib/logstash/agent.rb:90:in `execute'", "/opt/logstash/logstash-core/lib/logstash/runner.rb:348:in `block in execute'", "/opt/logstash/vendor/bundle/jruby/2.3.0/gems/stud-0.0.23/lib/stud/task.rb:24:in `block in initialize'"]}
    [2018-05-25T14:09:25,888][ERROR][logstash.agent           ] An exception happened when converging configuration {:exception=>RuntimeError, :message=>"Could not fetch the configuration, message: Failed to import module configurations to Elasticsearch and/or Kibana. Module: netflow has Elasticsearch hosts: [\"localhost:9200\"] and Kibana hosts: [\"localhost:5601\"]", :backtrace=>["/opt/logstash/logstash-core/lib/logstash/agent.rb:155:in `converge_state_and_update'", "/opt/logstash/logstash-core/lib/logstash/agent.rb:90:in `execute'", "/opt/logstash/logstash-core/lib/logstash/runner.rb:348:in `block in execute'", "/opt/logstash/vendor/bundle/jruby/2.3.0/gems/stud-0.0.23/lib/stud/task.rb:24:in `block in initialize'"]}
    The command '/bin/sh -c cd /opt/logstash   && bin/logstash --modules netflow --setup -M netflow.var.input.udp.port=9966' returned a non-zero code: 1

Maybe a nuance in this?

Answer 1

RUN is used when creating an image. Your actions must be performed when starting the container. Read the documentation for CMD and ENTRYPOINT.