Defining 'install4j.pidDir' property is breaking status/stop functionality of nexus.

When the "-Dinstall4j.pidDir=/var/run/nexus" property is added inside the "$install-dir/bin/nexus.vmoptions" then the "./nexus status" command does not function properly.

Following steps can be used to reproduce the issue locally.

1. Setup nexus "nexus-3.24.0-02" to run as service (as 'nexus' user). As mentioned in https://help.sonatype.com/repomanager3/installation/run-as-a-service

2. Verify everything works fine. So far all good.

# service nexus start
# service nexus status
# service nexus stop

3. Now as per the documentation try to define the "-Dinstall4j.pidDir=/var/run/nexus" property inside the $install-dir/bin/nexus.vmoptions

4. Create respective directory with correct permissions.

# mkdir -p /var/run/nexus
# chown -R nexus:nexus /var/run/nexus

5. Now the 'status' command does not work properly (also the service stop command also does not work properly)

# service nexus start

# service nexus status
Last login: Mon Jul 6 09:50:26 AEST 2020 on pts/2
nexus is stopped.

# ./nexus-3.24.0-02/bin/nexus status
Last login: Mon Jul 6 10:13:57 AEST 2020 on pts/2
nexus is stopped.

Although the nexus process is Up and running also the UI is also accessible.

Workaround:​
Try removing the "-Dinstall4j.pidDir=/var/run/nexus" property inside the "$install-dir/bin/nexus.vmoptions "   and then restart the nxrm3 process and validate again.