kali启动msfconsole后出现以下三种情况之一：
1 Module database cache not built yet, using slow search 2 Database not connected 3 failed to start metasploit.service:Unit metasploit.service not found
解决：
1 msfdb init 2 msfdb start 3 msfconsole
msfconsole 提示：Database not connected
原文：https://www.cnblogs.com/z9m8r8/p/15034263.html