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https://issues.apache.org/jira/browse/NIFI-6013?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16774175#comment-16774175
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Mike Thomsen commented on NIFI-6013:
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[~ErikAnderson] I'll incorporate this into a PR for you.
> NiFi Docker Environment Variable for enabling debugging of NiFi inside a
> Docker container
> -----------------------------------------------------------------------------------------
>
> Key: NIFI-6013
> URL: https://issues.apache.org/jira/browse/NIFI-6013
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Docker
> Reporter: Erik Anderson
> Assignee: Mike Thomsen
> Priority: Major
>
> I have a slight improvement to Environment variables that the NiFI docker
> system uses to bootstrap its nifi.properties files
> There are times, when learning NiFi, that I want to stop and start NiFi with
> debugging on. If NiFi was running inside a Docker container it was hard.
> What I did was I created a new environment variable within the NiFi
> bootstrapping system it uses to start itself up inside a docker container. I
> have documented all NiFI environment variables here.
> [https://github.com/dprophet/nifi/blob/master/nifi-docker/dockerhub/CONFIGURATION.md]
> I just pushed some code for review
> https://github.com/dprophet/nifi/commit/ea31ac6bd8f00944166e3e230af2040636c0505c
> What I did was introduce a new environment variable
> NIFI_DEBUG
> And in file
> https://github.com/apache/nifi/blob/master/nifi-docker/dockerhub/sh/start.sh
> I added
> if [[ -n $NIFI_DEBUG ]] ; then
> . "${scripts_dir}/update_logback.sh"
> fi
> Basically what it does, if the NIFI_DEBUG is set
> Example:
> NIFI_DEBUG="org.apache.nifi.web.security=TRACE,org.apache.nifi.authorization=DEBUG,org.apache.nifi.web.api.config=TRACE"
> It updates the
> ${NIFI_HOME}/conf/logback.xml
> File to enable the debugging modes of NiFi
> This is a very fast mechanism to restart NiFi with debugging turned on. Very
> developer and workflow friendly.
> If of interest I will give a pull request.
> What about the documentation I created?
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