This page lists common installation issues and recommended solutions :

Install script fails

The most common cause of installation failures is problems downloading packages. If this happens, check the following :

1. Can you Cloudmin master system access cloudmin.virtualmin.com to download packages via HTTP? If it is blocked by a firewall, the install will fail.
2. Is your system's YUM or APT configuration file up to date? If /etc/yum.repos.d is missing files or /etc/apt/sources.list is in-complete, some required packages may not be found.

Cannot Login as root

This can happen if your system doesn't have a root password set, perhaps because authentication is done via an SSH key. To set a password on CentOS, Fedora or Redhat Enterprise, use the command :

/usr/libexec/webmin/changepass.pl /etc/webmin root mynewpassword

Or on Debian or Ubuntu, run :

/usr/share/webmin/changepass.pl /etc/webmin root mynewpassword

Perl module install fails

If the install script reports that a Perl module has failed to install, try it manually from the shell with a command like :

perl -MCPAN -e 'install Net::SSLeay'

Assuming Net::SSLeay was the module that failed. The cause may be missing dependencies such as C development libraries that Cloudmin cannot automatically install.