CUPS Print Server Not Responding to Client Connections

Solution Verified - Updated -

Issue

  • Print server is not printing jobs to any branch.
  • Print server running on RHEL is no longer printing.
  • lpstat command hangs.
  • Printing becomes slow. The CUPS Error Log includes the message "Max clients reached, holding new connections".
  • What is the maximum number of simultaneous clients that CUPS can handle?

Environment

  • Red Hat Enterprise Linux (RHEL)
  • Common Unix Printing System (CUPS)

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