Openhab-cli console gets JAVA_HOME is not valid

Dear all,

  • Platform information:

    • Hardware: VM on QNAP NAS
    • OS: UBUNTO LTS 18.04.3
    • Java Runtime Environment: ZULU 8 installed as part of openhabian
    • openHAB version: 2.5 stable
  • Issue of the topic: OpenHAB itself works perfectly. I do use KNX, SONOS, email bindings. Sitemmaps and fronttail look good. However when I want to start the openhab-cli console I do get the following error

“JAVA_HOME is not valid: /usr/lib/JVM/java-8-openjdk-amd64”

The JAVA_HOME path is set and as I mentioned OH works. But I wanted to use the console to set some debugging for a specific add-on I do have trouble with.

Is there another way to enable debug mode without the console in the meantime?


You can set it in the config file. See Log4j2 Sample Config for a good example.

Hi Rich,

works like a charm, many thanks for pointing me in the right direction.

Quite case sensitive though :slight_smile:


You can assume that anything having to do with openHAB or Linux is going to be case sensitive.