cpan报错的解决方案

在docker内安装perl的模块，进去cpan时显示如下错误：

Loading internal null logger. Install Log::Log4perl for logging messages CPAN.pm panic: Lockfile '/root/.cpan/.lock' reports other host ff197d718ef4 and other process 22093. Cannot proceed. 

打开/root/.cpan/.lock文件删除ff197d718ef4行，再尝试进去cpan，成功解决问题。