ejabberdctl started su: Authentication failure
ejabberctl started is simply polling in loop ejabberctl status.
/bin/sh -x /usr/sbin/ejabberdctl status ... su -s /bin/sh -c "$0" "$@" ejabberd -- /usr/bin/erl -sname ea7-ctl-ejabberd@spox1 +K true -smp auto +P 250000 -env ERL_CRASH_DUMP_BYTES 0 -hidden -noinput -s ejabberd_ctl -extra ejabberd@foo1 status
Take care what hostname is used for connection (ejabberd@foo1). With default configuration, host foo1 should be resolvable to IP from lo range.
https://www.ejabberd.im/forum/29747/failed-rpc-connection-node-ejabberdpersonal-nodedown/index.html