[jira] [Commented] (NUTCH-2883) Provide means to run server and webapp as persistent services in Docker container

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/NUTCH-2883?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17418815#comment-17418815 ] 

ASF GitHub Bot commented on NUTCH-2883:
---------------------------------------

sebastian-nagel commented on pull request #691:
URL: https://github.com/apache/nutch/pull/691#issuecomment-925304439


   Hi @lewismc! Sorry, it took longer to get back...
   
   Finally found, why server and webapp didn't work (`docker prune` didn't help):
   - the environment variables `SERVER_HOST`, `SERVER_PORT` and `WEBAPP_PORT` were defined but empty
   - after some trial I've discovered that [ARG instructions must be within the FROM block they are used in](https://docs.docker.com/engine/reference/builder/#understand-how-arg-and-from-interact). After moving the ARG lines into the right places (aebf682) I was able to start the server. Could you verify this solution?
   
   Another point: after the webapp was moved into separate repository (see NUTCH-2886), it needs to be installed separately in the Dockerfile. Right now it fails with:
   ```
   ==> /var/log/supervisord/nutchwebapp_stderr.log <==
   Error: Could not find or load main class webapp
   Caused by: java.lang.ClassNotFoundException: webapp
   ```


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> Provide means to run server and webapp as persistent services in Docker container
> ---------------------------------------------------------------------------------
>
>                 Key: NUTCH-2883
>                 URL: https://issues.apache.org/jira/browse/NUTCH-2883
>             Project: Nutch
>          Issue Type: Improvement
>          Components: docker, nutch server, web gui
>    Affects Versions: 1.18
>            Reporter: Lewis John McGibbney
>            Assignee: Lewis John McGibbney
>            Priority: Major
>             Fix For: 1.19
>
>
> Some conditional logic and some Docker build arguments would allow a user to run the nutch server alone or both the nutch server and webapp as long running services.
> This could be useful for users who want to remotely interact with Nutch via REST where jobs may actually be executed on yet another remote deployment.



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