And
ps -ef |grep Myadminidshould better become
ps -fu Myadminidor
pgrep -lfu Myadminid---------- Post updated at 13:03 ---------- Previous update was at 12:59 ----------
ssh keys will work if you use "ssh -x adminuser@yourhostname..." instead of "su - adminuser -c ..."
But maybe sudo is more appropriate
man sudo
man sudoers