Gerald Kallas created KARAF-7448:
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Summary: Karaf file monitoring doesn't seem to work inside a
docker container
Key: KARAF-7448
URL: https://issues.apache.org/jira/browse/KARAF-7448
Project: Karaf
Issue Type: Bug
Components: karaf
Affects Versions: 4.4.0
Environment: *Steps to reproduce*
_Base installation_
{code:java}
{code}
_cd /opt/_
_tar -xvf apache-karaf-4.4.0.tar.gz_
_ln -s /opt/apache-karaf-4.4.0 /opt/apache-karaf_
_cd /opt/apache-karaf/bin
./karaf_
_Feature installation_
{code:java}
{code}
_feature:repo-add hawtio 2.14.5
feature:repo-add activemq 5.17.1
feature:repo-add camel 3.14.3
feature:install pax-web-jetty
feature:install hawtio activemq-broker-noweb camel camel-jms jms camel-http
camel-servlet camel-swagger-java camel-ftp camel-jackson camel-jsonpath
camel-json-validator camel-zipfile camel-velocity camel-groovy camel-salesforce
camel-kafka_
_Testing the pre-installed Karaf_
sample1.xml looks like
{code:java}
<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0";
xmlns:ext="http://aries.apache.org/blueprint/xmlns/blueprint-ext/v1.0.0";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="
http://www.osgi.org/xmlns/blueprint/v1.0.0
https://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd";> <reference
id="httpService" interface="org.osgi.service.http.HttpService" /> <bean
id="camelServlet1"
class="org.apache.camel.component.servlet.CamelHttpTransportServlet"/>
<bean class="org.apache.camel.component.servlet.osgi.OsgiServletRegisterer"
init-method="register"
destroy-method="unregister">
<property name="servletName" value="servlet1" />
<property name="alias" value="/test1" />
<property name="httpService" ref="httpService" />
<property name="servlet" ref="camelServlet1" />
</bean> <camelContext id="sample1"
xmlns="http://camel.apache.org/schema/blueprint";>
<route>
<from uri="servlet://hello?servletName=servlet1" />
<log message="Hello Camel 1!" />
</route>
</camelContext></blueprint> {code}
{code:java}
{code}
_cp sample1.xml /opt/apache-karaf/deploy/_
The route will be deployed as expected and is running properly.
_Packaging the archive_
{code:java}
{code}
_tar cvzf apache-karaf-4.4.0-camel-3.14.3.tgz apache-karaf-4.4.0_
_Creating and running the docker container_
{code:java}
{code}
_docker-compose -f docker-compose_Linux.yml up --build -d_
Dockerfile looks like
{code:java}
FROM openjdk:11-jre# Set karaf environment variables
ENV KARAF_INSTALL_PATH /opt
ENV KARAF_HOME $KARAF_INSTALL_PATH/apache-karaf
ENV PATH $PATH:$KARAF_HOME/bin# Copy and untar the karaf distribution
COPY *.tgz* /tmp/
RUN cat /tmp/*.tgz* | tar xzf - --directory $KARAF_INSTALL_PATH && \
rm /tmp/*.tgz*# Install build dependencies and karaf
RUN set -x && \
ln -s $KARAF_INSTALL_PATH/apache-karaf* $KARAF_HOME# Create casisp user
RUN groupadd --gid 2000 casisp && \
useradd --uid 2000 --create-home --home-dir /var/casisp --gid casisp
casisp# Set user permissions
RUN mkdir -p /var/casisp/files && \
mkdir /opt/apache-karaf/templates && \
chown -R casisp:casisp /var/casisp && \
chown -R casisp:casisp /opt/apache-karaf*EXPOSE 8101 1099 44444 8181 8443
USER casisp
CMD ["karaf", "run"] {code}
docker-compose_Linux.yml looks like
{code:java}
version: '3'
services:
karaf:
container_name: casisp
user: "2000"
build: .
restart: unless-stopped
network_mode: bridge
ports:
- "8101:8101"
- "1099:1099"
- "44444:44444"
- "8181:8181"
- "8443:8443"
- "8182:8182"
- "8444:8444"
command: karaf
stdin_open: true
tty: true {code}
The docker directory looks like
{code:java}
ll
total 156128
-rw-rw-r-- 1 casisp casisp 159859132 Jun 6 15:37
apache-karaf-4.4.0-camel-3.14.3.tgz
-rw-rw-r-- 1 casisp casisp 349 Jun 6 15:40 docker-compose_Linux.yml
-rw-rw-r-- 1 casisp casisp 819 Jun 5 13:02 Dockerfile {code}
*OS and docker release information*
{code:java}
cat /etc/os-release
NAME="Amazon Linux"
VERSION="2"
ID="amzn"
ID_LIKE="centos rhel fedora"
VERSION_ID="2"
PRETTY_NAME="Amazon Linux 2"
ANSI_COLOR="0;33"
CPE_NAME="cpe:2.3:o:amazon:amazon_linux:2"
HOME_URL="https://amazonlinux.com/";
docker version
Client:
Version: 20.10.13
API version: 1.41
Go version: go1.16.15
Git commit: a224086
Built: Thu Mar 31 19:20:32 2022
OS/Arch: linux/amd64
Context: default
Experimental: trueServer:
Engine:
Version: 20.10.13
API version: 1.41 (minimum version 1.12)
Go version: go1.16.15
Git commit: 906f57f
Built: Thu Mar 31 19:21:13 2022
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.4.13
GitCommit: 9cc61520f4cd876b86e77edfeb88fbcd536d1f9d
runc:
Version: 1.0.3
GitCommit: f46b6ba2c9314cfc8caae24a32ec5fe9ef1059fe
docker-init:
Version: 0.19.0
GitCommit: de40ad0
docker-compose version
docker-compose version 1.22.0, build f46880fe
docker-py version: 3.4.1
CPython version: 3.6.6
OpenSSL version: OpenSSL 1.1.0f 25 May 2017{code}
Reporter: Gerald Kallas
After the creation of a vanilla Karaf installation w/ some additional
components I did wrap the installation into a docker image/container. When
performing a hot deployment inside the created container the file monitoring
doesn't seem to work as expected.
I did perform similar tests with older versions (Karaf 4.2.9 and Camal 3.4.4),
there the file monitoring works.
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