Fix DRBL Server Issue

I need a skilled Linux administrator to fix my DRBL (Diskless Remote Boot in Linux) server. Currently, the setup is partially functional but has critical issues.

Key Issues:
- Unavailable Clonezilla server after boot
- Freezing issue at mounting /proc filesystem

Requirements:
- Both creating and restoring disk images functionality

Ideal Skills and Experience:
- Strong knowledge of DRBL, Clonezilla, and PXE booting
- Experience with troubleshooting Ubuntu server issues
- Familiarity with server logs and network configurations

Please ensure you have relevant experience and can provide a solution for these issues.