Currently scylla-jmx.service's PWD is "/", we get following error when
JVM trying to write heap dump on current directory:
Aug 17 05:52:15 localhost.localdomain scylla-jmx[3469]: Starting the JMX server
Aug 17 05:52:16 localhost.localdomain scylla-jmx[3469]: java.lang.OutOfMemoryError: Java heap space
Aug 17 05:52:16 localhost.localdomain scylla-jmx[3469]: Dumping heap to java_pid3469.hprof ...
Aug 17 05:52:16 localhost.localdomain scylla-jmx[3469]: Unable to create java_pid3469.hprof: Permission denied
To fix this, we need to specify WorkingDirectory on systemd unit.
Scylla now supports server-defined systemd slices that are used to provide
isolation between components.
This patch adds scylla-jmx to the helper slice. This will guarantee that
scylla-jmx does not use too much resources, influencing the server performance.
Signed-off-by: Glauber Costa <glauber@scylladb.com>
Since systemd unit can override parameters using drop-in unit, we don't need
mustache template for them.
Also, drop --disttype option on install.sh since it does not required anymore,
introduce --sysconfdir instead for non-redhat distributions.
