service postgresql start
msfconsole
msf>> msfdb init
msf>> msfconsole
>> createuser msf_user -P
new password for role: xxxx
>> createdb --owner=msf_user msf_database
>> exit
msf>> db_disconnect
msf>> db_connect msf_user:qwe123@127.0.0.1/msf_database
msf>> db_status
msf>> workspace -a new_workspace_name
msf>> db_nmap 192.168.31.1/24
msf>> hosts
msf>> db_export -f xml /root/test.xml