# Configure log4j for logstash using dockerfile

**URL:** <https://discuss.elastic.co/t/configure-log4j-for-logstash-using-dockerfile/55656>\
**Category:** Logstash\
**Created:** [July 15, 2016, 9:02pm UTC](https://discuss.elastic.co/t/configure-log4j-for-logstash-using-dockerfile/55656 "2016-07-15T21:02:47Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![ssable](https://avatars.discourse-cdn.com/v4/letter/s/7c8e57/32.png) [@ssable](https://discuss.elastic.co/u/ssable)\
**Post date:** [July 15, 2016, 9:02pm UTC](https://discuss.elastic.co/t/configure-log4j-for-logstash-using-dockerfile/55656/1 "2016-07-15T21:02:47Z")

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I recently started working on logstash. I am running it in docker and I want to read its logs using 'docker logs \<container\_name\>' command. But I am getting error

```
log4j:WARN No appenders could be found for logger (org.apache.http.client.protocol.RequestAuthCache).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

```

My dockerfile is as below, please let me know how to configure log4j using dockerfile.

```
FROM debian:jessie
ENV DEBIAN_FRONTEND noninteractive
RUN echo "deb http://http.debian.net/debian jessie-backports main" >> /etc/apt/sources.list && \
    rm -rf /var/lib/apt/lists/* && \
    apt-get -y update && \
    apt-get -y upgrade && \
    apt-get -y --force-yes install sudo wget logrotate texinfo build-essential openjdk-7-jdk ant git zip && \
    apt-get autoclean && \
    apt-get autoremove && \
    rm -rf /var/lib/apt/lists/*

# Install logstash package
RUN wget --quiet https://download.elastic.co/logstash/logstash/packages/debian/logstash_2.3.0-1_all.deb && \
    dpkg -i ./logstash_2.3.0-1_all.deb && \
    rm ./logstash_2.3.0-1_all.deb

ENV PATH /opt/logstash/bin:$PATH
CMD ["/usr/bin/sudo", "-E", "-u", "logstash", "/opt/logstash/bin/logstash", "-f", "/etc/logstash/logstash.conf"]
EXPOSE 5000-5100/tcp 5000-5100/udp

# Config ls
ENV LS_HEAP_SIZE 12288M
ADD logstash.conf /etc/logstash/logstash.conf

# Configuring log4j
ADD log4j.properties /etc/logstash/config/log4j.properties
```

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<div class="post-metadata">

**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\
**Post date:** [July 22, 2016, 3:32pm UTC](https://discuss.elastic.co/t/configure-log4j-for-logstash-using-dockerfile/55656/2 "2016-07-22T15:32:03Z")

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What's in log4j.properties? What if you remove its ADD stanza from the dockerfile?

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<div class="post-metadata">

**Author:** ![ssable](https://avatars.discourse-cdn.com/v4/letter/s/7c8e57/32.png) [@ssable](https://discuss.elastic.co/u/ssable)\
**Post date:** [July 26, 2016, 7:41am UTC](https://discuss.elastic.co/t/configure-log4j-for-logstash-using-dockerfile/55656/3 "2016-07-26T07:41:32Z")

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I tried removing ADD stanza but it did not work.  
Contents of log4j.properties.

```
log4j.rootLogger=INFO, console, socketappender

PATTERN=[%d{ISO8601}][%-5p][%-25c] %m%n

log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=${PATTERN}

```

Can you please let me know what is wrong with my configuration?  
Thank you in advance!

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 6, 2017, 4:46am UTC](https://discuss.elastic.co/t/configure-log4j-for-logstash-using-dockerfile/55656/4 "2017-07-06T04:46:30Z")

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