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By default the uptime-agent is installed to under Xinetd Mode. Which has historically been the most efficient method for managing the Uptime Infrastructure Monitor agent's life cycle, as it allows for easy configuration of things like agent-port and system level logging. Though recent versions of Redhat no longer install xinetd as part of their initial install. See this article Running the Uptime Infrastructure Monitor agent under Daemon Mode without Xinetd for details on howto how to enable this.