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NEXUS-46878: uppdated dockerfiles removing java opts #261

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2 changes: 1 addition & 1 deletion Dockerfile
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Original file line number Diff line number Diff line change
Expand Up @@ -90,6 +90,6 @@ VOLUME ${NEXUS_DATA}
EXPOSE 8081
USER nexus

ENV INSTALL4J_ADD_VM_PARAMS="-Xms2703m -Xmx2703m -XX:MaxDirectMemorySize=2703m -Djava.util.prefs.userRoot=${NEXUS_DATA}/javaprefs"
ENV INSTALL4J_ADD_VM_PARAMS="-Djava.util.prefs.userRoot=${NEXUS_DATA}/javaprefs"

CMD ["/opt/sonatype/nexus/bin/nexus", "run"]
2 changes: 1 addition & 1 deletion Dockerfile.alpine.java21
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Expand Up @@ -84,6 +84,6 @@ VOLUME ${NEXUS_DATA}
EXPOSE 8081
USER nexus

ENV INSTALL4J_ADD_VM_PARAMS="-Xms2703m -Xmx2703m -XX:MaxDirectMemorySize=2703m -Djava.util.prefs.userRoot=${NEXUS_DATA}/javaprefs"
ENV INSTALL4J_ADD_VM_PARAMS="-Djava.util.prefs.userRoot=${NEXUS_DATA}/javaprefs"

CMD ["/opt/sonatype/nexus/bin/nexus", "run"]
2 changes: 1 addition & 1 deletion Dockerfile.java21
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Expand Up @@ -91,6 +91,6 @@ VOLUME ${NEXUS_DATA}
EXPOSE 8081
USER nexus

ENV INSTALL4J_ADD_VM_PARAMS="-Xms2703m -Xmx2703m -XX:MaxDirectMemorySize=2703m -Djava.util.prefs.userRoot=${NEXUS_DATA}/javaprefs -Dfile.encoding=UTF-8"
ENV INSTALL4J_ADD_VM_PARAMS="-Djava.util.prefs.userRoot=${NEXUS_DATA}/javaprefs -Dfile.encoding=UTF-8"

CMD ["/opt/sonatype/nexus/bin/nexus", "run"]
2 changes: 1 addition & 1 deletion Dockerfile.rh.ubi.java21
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Expand Up @@ -96,7 +96,7 @@ VOLUME ${NEXUS_DATA}
EXPOSE 8081
USER nexus

ENV INSTALL4J_ADD_VM_PARAMS="-Xms2703m -Xmx2703m -XX:MaxDirectMemorySize=2703m -Djava.util.prefs.userRoot=${NEXUS_DATA}/javaprefs"
ENV INSTALL4J_ADD_VM_PARAMS="-Djava.util.prefs.userRoot=${NEXUS_DATA}/javaprefs"

ENTRYPOINT ["/uid_entrypoint.sh"]
CMD ["/opt/sonatype/nexus/bin/nexus", "run"]
14 changes: 11 additions & 3 deletions README.md
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Expand Up @@ -140,18 +140,26 @@ process, which runs as UID 200.

* There is an environment variable that is being used to pass JVM arguments to the startup script

* `INSTALL4J_ADD_VM_PARAMS`, passed to the Install4J startup script. Defaults to `-Xms2703m -Xmx2703m -XX:MaxDirectMemorySize=2703m -Djava.util.prefs.userRoot=${NEXUS_DATA}/javaprefs`.
* `INSTALL4J_ADD_VM_PARAMS`, passed to the Install4J startup script. Defaults to `-Djava.util.prefs.userRoot=${NEXUS_DATA}/javaprefs`.

This can be adjusted at runtime:

```
$ docker run -d -p 8081:8081 --name nexus -e INSTALL4J_ADD_VM_PARAMS="-Xms2703m -Xmx2703m -XX:MaxDirectMemorySize=2703m -Djava.util.prefs.userRoot=/some-other-dir" sonatype/nexus3
```

**Java Memory Configuration Parameters:**

The example above demonstrates configuring Java memory parameters. Each parameter controls a specific aspect of memory allocation:

- `-Xms2703m`: Sets the initial heap size to 2703 MB
- `-Xmx2703m`: Sets the maximum heap size to 2703 MB
- `-XX:MaxDirectMemorySize=2703m`: Sets the maximum direct memory size to 2703 MB

These values should be adjusted based on your [memory requirements](https://help.sonatype.com/display/NXRM3/System+Requirements#SystemRequirements-MemoryRequirements). Setting `-Xms` and `-Xmx` to the same value prevents heap resizing and provides more predictable performance.

Of particular note, `-Djava.util.prefs.userRoot=/some-other-dir` can be set to a persistent path, which will maintain
the installed Sonatype Nexus Repository License if the container is restarted.

Be sure to check the [memory requirements](https://help.sonatype.com/display/NXRM3/System+Requirements#SystemRequirements-MemoryRequirements) when deciding how much heap and direct memory to allocate.

* Another environment variable can be used to control the Nexus Context Path

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