问题点：kali 2020.02版中msfconsole报警“WARNING: No database support: could not connect to server: Connection refused”
解决方法：
step1:在终端中输入命令：systemctl start postgresql,启动postgresql
step2:命令：systemctl status postgresql //查看postgresql状态，
step3:重新启动msf,命令：msfconsole