I was trying to extract dump.jar file then convert to csv file using this java command in ubuntu-docker (Linux platform) the code has no syntax error but there is no java, so it cannot process. How shall I call java from ubuntu inside the docker?
install Java but there is not enough space
ANY IDEA please?
trying
connect container with user root
docker exec -it -u root container_name /bin/bash
install java 11 or other version
apt-get install openjdk-11-jdk
java --version
now you can use java in docker container
Related
This is using my Dockerfile
FROM lpicanco/java11-alpine
VOLUME /tmp
ADD knetconfig /tmp/knetconfig
ADD grpc_health_probe_linux_x64 /app/grpc_health_probe_linux_x64
RUN chmod +x /app/grpc_health_probe_linux_x64
ADD aero-pay-core-service-latest.jar app.jar
RUN sh -c 'touch /app.jar'
EXPOSE 5005
ENV JAVA_OPTS="-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=5005 -Djava.security.egd=file:/dev/./urandom"
ENTRYPOINT java $JAVA_OPTS -jar /app.jar
But it getting this error in building time,I am using java 11,
Error occurred during initialization of VM
Could not find agent library jdwp on the library path, with error: libjdwp.so: cannot open shared object file: No such file or directory
What would be the best possible options?
It may be that the alpine version of JDK11 is tuned to minimize the footprint.
Likely a debugging library was removed or never installed.
I have an Amazon EC2 t3.medium instance on Linux.
I am trying to run Apache ni-fi on this instance and I need java.
When I check the JAVA_HOME default:
$ echo$JAVA_HOME
-bash: echo/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.261-2.6.22.2.amzn2.0.2.x86_64: No such file or directory
Then, I downloaded java 1.8 by the following comamnds on terminal:
$ sudo yum install java-1.8.0-openjdk.x86_64
$ sudo update-alternatives --config java
(I selected 2 for java 1.8)
To find the location of my java file, I run them:
$ file $(which java)
/usr/bin/java: symbolic link to `/etc/alternatives/java'
$ file /etc/alternatives/java
/etc/alternatives/java: symbolic link to `/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-1.amzn2.0.2.x86_64/jre/bin/java'
$ file /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-1.amzn2.0.2.x86_64/jre/bin/java
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-1.amzn2.0.2.x86_64/jre/bin/java: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 3.2.0, BuildID[sha1]=1b1c0fd721197a04f9bfc9b0891f1bd83a5f49d5, not stripped
I guess it is working properly. Then, I change JAVA_HOME from 1.7 to 1.8 by writing these commands on terminal for both ec2-user and root:
[root#ip-178-32-11-247 ~]# export JAVA_HOME="/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-1.amzn2.0.2.x86_64"
[root#ip-178-32-11-247 ~]# PATH=$JAVA_HOME/bin:$PATH
In advance, I have setup nifi on root. And in nifi-1.16.0 directory, I am trying to run this command:
[root#ip-178-32-11-247 nifi-1.16.0]# bin/nifi.sh start
The Error message is:
Java home: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-1.amzn2.0.2.x86_64
NiFi home: /root/nifi-1.16.0
Bootstrap Config File: /root/nifi-1.16.0/conf/bootstrap.conf
bin/nifi.sh: line 401: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-1.amzn2.0.2.x86_64/bin/java: No such file or directory
I thought that java is working but JAVA_HOME couldn't setup properly but I couldn't solve that. What should I do at that point to solve the problem and start nifi?
I will be appreciated very much if you can help, I coludn't start my term project because of this error :(
The correct path for JAVA_HOME should be /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-1.amzn2.0.2.x86_64/jre/bin/java
export JAVA_HOME="/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-1.amzn2.0.2.x86_64/jre/bin/java"
But probably you don't need to export JAVA_HOME anyway. You should have a link in /usr/bin/. You can check this by doing the following:
[ssm-user#ip-172-31-85-243 bin]$ which java
/usr/bin/java
By default Apache Nifi is using the executable /usr/bin/java, so you don't need to export JAVA_HOME.
I am trying to containerise an application using docker and the official openjdk image. From GitHub: https://github.com/jactor-rises/jactor-persistence/tree/feature-docker
I am trying to simulate the following jar command:
java -jar target/jactor-persistence-1.2.1-SNAPSHOT-app.jar
My Dockerfile:
FROM openjdk:13
LABEL jactor-rises="https://github.com/jactor-rises" \
email="..."
COPY target/jactor-persistence-*-app.jar /usr/src/myapp/app.jar
WORKDIR /usr/src/myapp
EXPOSE 1099
CMD [ "java -jar app.jar" ]
The application runs fine by changing the CMD line suggested by David Maze in his comment
CMD java -jar app.jar
No build error throw me off and I did not consider that this was a possible cause of the error...
I am new in Docker, I would like to know how to install Tomcat Container from the command line, also, what are the pre-requisites, do I need to download Java on Fedora 28 first? Or Tomcat already contains a JVM ?
The tomcat/8.5/jre8/Dockerfile image definition starts with
FROM openjdk:8-jre
So it already includes a JDK.
All you need to do is run the default Tomcat server (CMD ["catalina.sh", "run"]):
$ docker run -it --rm tomcat:8.0
You can test it by visiting http://container-ip:8080
See more at hub.docker.com/_/tomcat/.
All you need is to install docker first.
The OP adds:
To be able to connect I had to run below command to get the container ID with
docker ps
docker inspect <containerid> | grep "IPAddress"
Tried everything but it just wont work, im running tomcat7 on an EC2 instance (amazon AWS). I can start up tomcat7 manually by starting startup.sh, but not automatically on startup. The error message I get in logs/catalina.out is the following:
/etc/apache-tomcat-7.0.32/bin/catalina.sh: 1: eval: /etc/jdk1.7.0_07/bin/java: not found
My enviroment variables are also setup properly:
echo $JAVA_HOME -> /etc/jdk1.7.0_07/bin/java
echo $PATH -> /usr/local/sbin:/usr/local/bin:/usr/sbin/:/usr/bin:/sbin:/bin:/usr/games:/etc/jdk1.7.0_07/bin
I can also type "java -version" in shell getting proper output, however "/etc/jdk1.7.0_07/bin/java -version" does not work and only returns "No such file or directory".
Im really not sure what to do now, feels like i tried everything, hope someone can help me!
Also the instance is running Ubuntu server 12.04.
Do sudo su vi /etc/bash.bashrc and copy following
JAVA_HOME=/etc/jdk1.7.0_07 //you have to only specify path until java dir not bin
export JAVA_HOME
PATH=$PATH:$JAVA_HOME/bin
export PATH
I do not particularly known about specifics of ubuntu+tomcat7 on EC2. So my answer could be missing a point a bit. It is given from generic ubuntu point of view.
Possibly things will be a bit easier to manage if you use apt-get to manage tomcat and java on ubuntu. In that case the tomcat will automatically started on start up. The commands below are tested on ubuntu 12.10, but also worked on some earlier version.
To install Java you need the following:
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java7-installer
If the first command fails, use the following:
sudo apt-get install software-properties-common
Then install tomcat7 using:
sudo apt-get install tomcat7
After that you need to tell tomcat to use installed java 7. For that purpose modify /etc/default/tomcat7 file either manually or using command like the following:
cat /etc/default/tomcat7 | sed 's/#JAVA_HOME=\/usr\/lib\/jvm\/openjdk-6-jdk/JAVA_HOME=\/usr\/lib\/jvm\/java-7-oracle/' >/tmp/tomcat7-updated
sudo cp /tmp/tomcat7-updated /etc/default/tomcat7
After that tomcat should load on start up. You just need to tune up ports and other configuration information. Note that this tomcat uses /var/lib/tomcat7/webapps/ to store web applications. You could also start or stop tomcat manually using the commands like the following:
sudo /etc/init.d/tomcat7 start
For automatic startup of tomcat, it should be started during booting time only.
For that you need to write a script which starts the tomcat and put this file in the etc/init.d or you can put it for different runlevels.
The hint for me was modifying the shell script file (set JAVA_HOME variable) and this resolved the issue.
The tomcat script file is generally under /etc/init.d/ directory