Checkmk Werk 13865: Agent controller on Unix: Deny registration if agent socket is not operational

ID: 13865 Title: Agent controller on Unix: Deny registration if agent socket is not operational Component: Checks & agents Level: 1 Class: New feature Version: 2.2.0i1 Upon startup, the agent controller (<tt>cmk-agent-ctl</tt>) now checks if the agent socket is operational on Unix systems. If not, we refuse the agent registration (subcommands <tt>register</tt>, <tt>import</tt>), because a non- operational socket can hint at <tt>xinetd</tt> systems. On such systems, a successful registration would mislead the user into believing that the agent communication is now TLS-encrypted, which is not the case. Furthermore, the operational status of the agent socket is also reported by the <tt>status</tt> subcommand.