一、前言

1、这里我提几点可能会导致无法启动msf的问题。

1、长时间没有使用msf框架

2、kali的系统环境变量没有加入 msfconsole 或者是环境变量遭到破坏

3、msf的配置文件出现问题

2、一般会有以下报错提示

1、报错1：

  
  # msfconsole
  ​
  　　/usr/share/metasploit-framework/lib/msf/core/payload/android.rb:87:in `not_after=': bignum too big to convert into `long' (RangeError)
          from /usr/share/metasploit-framework/lib/msf/core/payload/android.rb:87:in `sign_jar'
          from /usr/share/metasploit-framework/lib/msf/core/payload/android.rb:118:in `generate_jar'
          from /usr/share/metasploit-framework/modules/payloads/singles/android/meterpreter_reverse_tcp.rb:44:in `generate_jar'
          from /usr/share/metasploit-framework/lib/msf/core/payload/android.rb:38:in `generate'
          from /usr/share/metasploit-framework/lib/msf/core/payload.rb:204:in `size'
          from /usr/share/metasploit-framework/lib/msf/core/payload_set.rb:91:in `block in recalculate'
          from /usr/share/metasploit-framework/lib/msf/core/payload_set.rb:78:in `each_pair'
          from /usr/share/metasploit-framework/lib/msf/core/payload_set.rb:78:in `recalculate'
          from /usr/share/metasploit-framework/lib/msf/core/modules/loader/base.rb:251:in `block in load_modules'
          from /usr/share/metasploit-framework/lib/msf/core/modules/loader/base.rb:248:in `each'
          from /usr/share/metasploit-framework/lib/msf/core/modules/loader/base.rb:248:in `load_modules'
          from /usr/share/metasploit-framework/lib/msf/core/module_manager/loading.rb:119:in `block in load_modules'
          from /usr/share/metasploit-framework/lib/msf/core/module_manager/loading.rb:117:in `each'
          from /usr/share/metasploit-framework/lib/msf/core/module_manager/loading.rb:117:in `load_modules'
          from /usr/share/metasploit-framework/lib/msf/core/module_manager/module_paths.rb:41:in `block in add_module_path'
          from /usr/share/metasploit-framework/lib/msf/core/module_manager/module_paths.rb:40:in `each'
          from /usr/share/metasploit-framework/lib/msf/core/module_manager/module_paths.rb:40:in `add_module_path'
          from /usr/share/metasploit-framework/lib/msf/base/simple/framework/module_paths.rb:50:in `block in init_module_paths'
          from /usr/share/metasploit-framework/lib/msf/base/simple/framework/module_paths.rb:49:in `each'
          from /usr/share/metasploit-framework/lib/msf/base/simple/framework/module_paths.rb:49:in `init_module_paths'
          from /usr/share/metasploit-framework/lib/msf/ui/console/driver.rb:219:in `initialize'
          from /usr/share/metasploit-framework/lib/metasploit/framework/command/console.rb:62:in `new'
          from /usr/share/metasploit-framework/lib/metasploit/framework/command/console.rb:62:in `driver'
          from /usr/share/metasploit-framework/lib/metasploit/framework/command/console.rb:48:in `start'
          from /usr/share/metasploit-framework/lib/metasploit/framework/command/base.rb:82:in `start'
          from /usr/bin/msfconsole:48:in `<main>'

2、报错2:

 # msfconsole
 
  msf 报错Module database cache not built yet, using slow search

二、解决方法

这里我总结了最简单简便的解决方法。

1、针对报错1的解决方法:

这种报错是因为 metasploit-framework 出了问题，所以我们只需要卸载之前的框架，然后重新安装 metasploit-framework 框架就可以成功解决。

依次执行以下5 条命令，就可以成功解决。

# apt-get autoremove metasploit-framework     卸载metasploit-framework
  # apt-get update                              更新本地索引并读取软件列表
  # apt-get install metasploit-framework        安装metasploit-framework
  # service postgresql start                    启动postgresSQL服务器
  # msfconsole                                  启动msf

2、针对报错2的解决方法：

报错2的提示为数据库缓存还没有建立，这时我们给它初始化一下就解决了。这次只需要一行命令就可以成功解决。

  # msfd init                                   初始化数据库

3、没有列出来的其他报错都可以使用 针对报错1 的解决方法去解决 也就是卸载metasploit-framework框架再重新安装就可以解决。