I have installed OpenHAB2 (Snapshot) using apt-get.
It is running fine.
I wanted to set up a bash-script in Linux that checks regularly if OpenHAB2 is running, and (if not) start it.
I use this script:
if /usr/sbin/service openhab2 status > /dev/null
then
echo "Running"
else
echo "Stopped, starting openHAB…"
/usr/sbin/service openhab2 start
fi
The script is running fine. However, every time “/usr/sbin/service openhab2 status” I see an entry in openhab.log:
It is just a warning, and it seems safe to ignore. But this means my script will pollute my openhab.log. Is there anything wrong with my OH installation? How to solve this warning message?
I tried the same (copied your script) and I don’t get the same
I checked and I have org.apache.karaf on WARN level so I should get that log entry also… (but I don’t)
I am on S951
Correction: The /etc/init.d/openhab2 script does interact with the Karaf (it executes /usr/share/openhab2/runtime/bin/status which in turn, executes: "$KARAF_HOME"/bin/karaf status "$@"
Do you get the same log entry when you run: /usr/share/openhab2/runtime/bin/karaf status ?
update: If I run it manually, I get the same (Karaf shutdown socket: Invalid command '' received)
This means that the script is not executed correctly (for some strange reason)
Note: If I execute systemctl status openhab2 or service openhab2 status, I don’t get that log entry
When I run “/usr/share/openhab2/runtime/bin/karaf status”, I get:
root@DiskStation:/# /usr/share/openhab2/runtime/bin/karaf status
/bin/bash: warning: setlocale: LC_ALL: cannot change locale (en_US.utf8)
/usr/share/openhab2/runtime/bin/setenv: line 161: die: command not found
/usr/share/openhab2/runtime/bin/setenv: line 181: [: : integer expression expected
/usr/share/openhab2/runtime/bin/karaf: line 261: [: : integer expression expected
/usr/share/openhab2/runtime/bin/karaf: line 306: [: : integer expression expected
/usr/share/openhab2/runtime/bin/karaf: line 497: /var/packages/java8/target/ejdk1.8.0_121/linux_i586/jre/bin/java: No such file or directory
When running “systemctl status openhab2”, I get:
root@DiskStation:/# systemctl status openhab2
Running in chroot, ignoring request.
When I run “service openhab2 status”, I get:
root@DiskStation:/# service openhab2 status
status: Ignoring predefined value for KARAF_HOME
/bin/bash: warning: setlocale: LC_ALL: cannot change locale (en_US.utf8)
Running ...
And that last command also results in a “[WARN ] [ache.karaf.main.ShutdownSocketThread] - Karaf shutdown socket: Invalid command ‘’ received”
I guess it is related to the fact that I have installed OH under chroot. This is a way to have Debian (and thus apt-get) on my Synology.
If you get this error, or one like it, it means your java version isn’t set correctly /usr/share/openhab2/runtime/bin/setenv: line 181: [: : integer expression expected
Run java -version
To verify it. If it shows nothing, install java. For ubuntu this is: sudo apt install default-jre default-jdk
If you are using a really new dev version, you’ll need to switch it: sudo apt update-alternatives --config java
If you haven’t set these variables: echo $JAVA echo $JAVA_HOME
Then you need to set them sudo nano /etc/environment
The correct value of JAVA_HOME is whatever dir has a bin/java in it (the bin dir in it), that is to say: sudo updatedb && locate bin/java
or JAVA=/usr/lib/jvm/java-8-openjdk-amd64
