Here are the instructions to restart nds2 (ref. [[https://nodus.ligo.caltech.edu:8081/40m/18296|this elog]])

'''1. Log in to megatron'''

'''2. Kill all the nds2 related processes'''

megatron> ps -def  | grep nds2

megatron> sudo kill (process number)

megatron> sudo kill -9 (process number)  # if the above did not kill a process, force kill

'''3. Become nds2mgr'''

megatron> sudo su nds2mgr

'''4. Go to nds2mgr folder'''

cd /home/nds2mgr/nds2-megatron

'''5. Confirm nds2 is not running'''

megatron> sudo /etc/init.d/nds2 stop

Shutting down nds2: No nds2 found running; none killed.

'''6. Run nds2'''

megatron> sudo /etc/init.d/nds2 start

Starting nds2: Clear all segments...