How to change NiFi temporary staging path in case of security hardening

[#1]

When starting NiFi, it uses the default staging path which is /home/NiFi/. This path needs the Execute permissions for NiFi binaries to avoid NiFi from failing to starting . The below error would also indicate the cause of this issue;

Caused by: java.lang.UnsatisfiedLinkError: /home/nifi/.cache/JNA/temp/jna3526468256198020468.tmp: /home/nifi/.cache/JNA/temp/jna3526468256198020468.tmp: failed to map segment from shared object: Operation not permitted

Solution

In case of security hardening (noexec) for /home, you need to change the default staging directory in NiFi by using the below parameters:

CM > NIFI > Configs

NiFi Node Advanced Configuration Snippet (Safety Valve) for staging/bootstrap.conf.xml

add the following:
Name: java.arg.jna
Value: -Djna.tmpdir=/NEWPATH

Restart NIFI services.