irqbalance.service fails to start and message "Failed to set up user namespacing" is shown.

Solution Verified - Updated -

Issue

Error observed while attempting to start irqbalance.service:

    server.hostname systemd[PID]: Started irqbalance daemon.
    server.hostname systemd[PID]: irqbalance.service: Failed to set up user namespacing: No space left on device
    server.hostname systemd[PID]: irqbalance.service: Failed at step USER spawning /usr/sbin/irqbalance: No space left on device

Environment

Red Hat Enterprise Linux 8

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