Tomcat <defunct> process using phusion/baseimage

[Oded Gold]

Hi all

Has anyone used phusion/baseimage to run tomcat7? I am new to phusion/baseimage and trying to install tomcat7  using "apt-get install tomcat7" but get the following issues:

Running service tomcat7 restart

1. Restarting the service says it stops successfully but does not and when it starts up again it says failed but actually creates another instance of the tomcat process

2. Trying to kill the service with pkill java or kill -9 PID either does nothing of <defunct>s the process 

I think this is a known issues with tomat and docker has anyone had success in fixing tomcat issues with docker 

[Yonsy Solis]

On Thu, Mar 26, 2015 at 5:41 AM, Oded Gold <oded...@signalsgroup.com>
wrote:

> Hi all
>
> Has anyone used phusion/baseimage to run tomcat7? I am new to
> phusion/baseimage and trying to install tomcat7 using "apt-get
> install tomcat7" but get the following issues:

tomcat 6 and tomcat7 in my case.
my Dockerfile was (this was for Tomcat6, same applies to Tomcat7)

================================================
FROM phusion/baseimage:0.9.9
MAINTAINER yonsy...@scytl.com

RUN apt-get update
RUN apt-get install python-software-properties -y
RUN apt-add-repository ppa:webupd8team/java -y
RUN apt-get update
RUN apt-get dist-upgrade -y

RUN echo oracle-java6-installer shared/accepted-oracle-license-v1-1
select true | /usr/bin/debconf-set-selections
RUN apt-get install oracle-java6-installer oracle-java6-set-default
tomcat6 tomcat6-admin -y

RUN sed -i "s#</tomcat-users>##g" /etc/tomcat6/tomcat-users.xml; \
echo ' <role rolename="manager-gui"/>' >>
/etc/tomcat6/tomcat-users.xml; \
echo ' <role rolename="manager"/>' >> /etc/tomcat6/tomcat-users.xml;
\
echo ' <role rolename="admin"/>' >> /etc/tomcat6/tomcat-users.xml; \
echo ' <user username="admin" password="admin" roles="admin, manager,
manager-gui"/>' >> /etc/tomcat6/tomcat-users.xml; \
echo '</tomcat-users>' >> /etc/tomcat6/tomcat-users.xml

EXPOSE 8080

RUN echo 'export JAVA_HOME="/usr/lib/jvm/java-6-oracle"' >> ~/.bashrc
RUN echo "JAVA_HOME=/usr/lib/jvm/java-6-oracle" >> /etc/default/tomcat6
ENV JAVA_HOME /usr/lib/jvm/java-6-oracle
RUN update-java-alternatives -s java-6-oracle

ENV CATALINA_HOME /usr/share/tomcat6
RUN echo 'export CATALINA_HOME="/usr/share/tomcat6"' >> .bashrc
RUN echo 'CATALINA_HOME=/usr/share/tomcat6' >> /etc/default/tomcat6

ENV CATALINA_BASE /var/lib/tomcat6
RUN echo 'export CATALINA_BASE="/var/lib/tomcat6"' >> .bashrc
RUN echo 'CATALINA_BASE=/var/lib/tomcat6' >> /etc/default/tomcat6

CMD /sbin/my_init

ADD tomcat6.sh /etc/my_init.d/tomcat6.sh
RUN chmod +x /etc/my_init.d/tomcat6.sh
==================================

and tomcat6.sh file was

===============
#!/bin/bash

/etc/init.d/tomcat6 start
===============

well, you have an idea how works for me (with GlassFish was A LOT
easier)

Yonsy Solis

[Oded Gold]

Thanks for the help but it still did not work for me I tried it using tomcat7 and java8 using your docker file and just changing tomcat6 to 7 and the java version to 8 but my problem continues with the defunct processes 

root       147     0  0 14:28 ?        00:00:00 [start-stop-daem] <defunct>

tomcat7    149     0  0 14:28 ?        00:00:00 [bash] <defunct>

tomcat7    156     0 12 14:28 ?        00:00:05 /usr/lib/jvm/default-java/bin/java -Djava.util.logging.config.file=/var/lib/tomcat7/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.awt.head

root       212     0  0 14:29 ?        00:00:00 [start-stop-daem] <defunct>

tomcat7    214     0  3 14:29 ?        00:00:00 [bash] <defunct>

tomcat7    221     0 59 14:29 ?        00:00:04 [java] <defunct>

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[Hongli Lai]

Defunct processes are zombie processes, as described in this blog
post: https://blog.phusion.nl/2015/01/20/docker-and-the-pid-1-zombie-reaping-problem/

Are you running everything under my_init? Without my_init, zombie
processes are not reaped.

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