O problema não foi com o Docker ou qualquer configuração dele. Um processo externo reiniciava periodicamente a janela de encaixe, que, por sua vez, reiniciava o processo do orquestrador que estava sendo executado dentro da janela de encaixe.
Eu tenho um contêiner docker que hospeda um aplicativo Java. Mas muitas vezes vi a aplicação estar inativa e a janela de encaixe não está em execução.
Em /var/log/daemon.log , vejo apenas as informações abaixo sem erros
Oct 10 10:54:58 or4 docker[18366]: time="2016-10-10T10:54:58.875341257+05:30" level=info msg="POST /v1.21/containers/c1a64d308f45/stop?t=10"
Oct 10 10:54:59 or4 systemd-sysctl[100591]: Overwriting earlier assignment of net/ipv4/tcp_tw_recycle in file '/etc/sysctl.d/99-sysctl.conf'.
Abaixo está a saída de docker logs <container id>
2016-10-10 10:53:57,242 WARN received SIGTERM indicating exit request
2016-10-10 10:53:57,243 INFO waiting for orchestrator to die
2016-10-10 10:53:57,243 INFO stopped: orchestrator (terminated by SIGTERM)
2016-10-10 11:31:21,137 CRIT Supervisor running as root (no user in config file)
2016-10-10 11:31:21,137 WARN Included extra file "/etc/supervisor/conf.d/supervisord.conf" during parsing
2016-10-10 11:31:21,170 INFO RPC interface 'supervisor' initialized
2016-10-10 11:31:21,170 WARN cElementTree not installed, using slower XML parser for XML-RPC
2016-10-10 11:31:21,171 CRIT Server 'unix_http_server' running without any HTTP authentication checking
2016-10-10 11:31:21,171 INFO supervisord started with pid 1
2016-10-10 11:31:22,174 INFO spawned: 'orchestrator' with pid 6
2016-10-10 11:31:23,863 INFO success: orchestrator entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2016-10-10 14:31:43,490 WARN received SIGTERM indicating exit request
2016-10-10 14:31:43,491 INFO waiting for orchestrator to die
2016-10-10 14:31:43,491 INFO stopped: orchestrator (terminated by SIGTERM)
2016-10-10 14:50:10,217 CRIT Supervisor running as root (no user in config file)
2016-10-10 14:50:10,217 WARN Included extra file "/etc/supervisor/conf.d/supervisord.conf" during parsing
2016-10-10 14:50:10,258 INFO RPC interface 'supervisor' initialized
2016-10-10 14:50:10,258 WARN cElementTree not installed, using slower XML parser for XML-RPC
2016-10-10 14:50:10,258 CRIT Server 'unix_http_server' running without any HTTP authentication checking
2016-10-10 14:50:10,258 INFO supervisord started with pid 1
2016-10-10 14:50:11,261 INFO spawned: 'orchestrator' with pid 6
2016-10-10 14:50:13,103 INFO success: orchestrator entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2016-10-10 14:57:48,522 WARN received SIGTERM indicating exit request
2016-10-10 14:57:48,522 INFO waiting for orchestrator to die
2016-10-10 14:57:48,523 INFO stopped: orchestrator (terminated by SIGTERM)
2016-10-10 15:43:04,028 CRIT Supervisor running as root (no user in config file)
2016-10-10 15:43:04,028 WARN Included extra file "/etc/supervisor/conf.d/supervisord.conf" during parsing
2016-10-10 15:43:04,059 INFO RPC interface 'supervisor' initialized
2016-10-10 15:43:04,059 WARN cElementTree not installed, using slower XML parser for XML-RPC
2016-10-10 15:43:04,059 CRIT Server 'unix_http_server' running without any HTTP authentication checking
2016-10-10 15:43:04,059 INFO supervisord started with pid 1
2016-10-10 15:43:05,061 INFO spawned: 'orchestrator' with pid 6
2016-10-10 15:43:06,561 INFO success: orchestrator entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
Abaixo está o arquivo docker.
FROM nocindia/java:java8-mvn3.2.5
MAINTAINER "[email protected]"
RUN ln -fns /usr/share/zoneinfo/Asia/Kolkata /etc/localtime
RUN apt-get update && apt-get install -y unzip imagemagick mediainfo
ENV JAVA_HOME /usr/lib/jvm/java-8-oracle
ENV SERVICEMIX_VERSION_MAJOR=F
ENV SERVICEMIX_VERSION_MINOR=I
ENV SERVICEMIX_VERSION_PATCH=L.M2
ENV SERVICEMIX_VERSION=${SERVICEMIX_VERSION_MAJOR}.${SERVICEMIX_VERSION_MINOR}.${SERVICEMIX_VERSION_PATCH}
RUN wget http://www-us.apache.org/dist/servicemix/servicemix-${SERVICEMIX_VERSION_MAJOR}/${SERVICEMIX_VERSION}/apache-servicemix-${SERVICEMIX_VERSION}.zip && \
unzip -d /opt apache-servicemix-${SERVICEMIX_VERSION}.zip && \
rm -f apache-servicemix-${SERVICEMIX_VERSION}.zip;
# For Karaf Web Console
EXPOSE 8181
# Orchestrator service running inside karaf
EXPOSE XXXX
# For connecting to karaf console remotely via Karaf client
EXPOSE AAAA
# running mvn tests
EXPOSE BBBBB
# running file upload service
EXPOSE DDDDD
# remove the unwanted files which saves some MB's
RUN apt-get clean -y && apt-get autoclean -y && apt-get autoremove -y \
&& cp -R /usr/share/locale/en\@* /tmp/ && rm -rf /usr/share/locale/* && mv /tmp/en\@* /usr/share/locale/ \
&& rm -rf /var/cache/debconf/*-old && rm -rf /usr/share/doc/*
ADD supervisord.conf /etc/supervisor/conf.d/supervisord.conf
ADD timezone /etc/timezone
CMD ["/usr/bin/supervisord"]
AAAA , XXXX , etc são marcadores de posição.
Alguém pode me explicar o que poderia estar errado e como depurar esse problema?
Ambiente: -
Tags docker