apologies for the misunderstanding, the correct file is
/var/log/mongodb/mongod.log
Result of
ss -tlnp
is
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 0 128 *:26603 *:* users:(("node",pid=2711,fd=23))
LISTEN 0 128 *:80 *:*
LISTEN 0 5 127.0.1.1:53 *:*
LISTEN 0 128 *:22 *:*
LISTEN 0 5 127.0.0.1:631 *:*
LISTEN 0 128 *:3000 *:* users:(("node",pid=2420,fd=23))
LISTEN 0 128 127.0.0.1:33980 *:* users:(("node",pid=2711,fd=22))
LISTEN 0 128 :::80 :::*
LISTEN 0 128 :::22 :::*
LISTEN 0 5 ::1:631 :::*
and result of ls -l /tmp/mongodb-*
is
srwx------ 1 mongodb mongodb 0 Μάρ 23 17:24 /tmp/mongodb-23654.sock
The ps -aef | grep [m]ongod gave nothing.