When the Host is rebooted it may happen that the TLS-Gateway is unable to start.
Error in the TSL-Gateway Log :
20220307/144221.270 - U02000401 Received JCP server list: 'https://[AUTOMIC_SERVER]:2317/;https://[AUTOMIC_SERVER]:2318/'
20220307/144221.274 - U02000308 Agent certificate file './security/TLS_GTWAY_01.cert' was loaded, expiration date 'Sat Feb 18 19:55:19 CET 2023'.
20220307/144221.284 - U02000308 Agent certificate file './security/TLS_GTWAY_01_ca.pem' was loaded, expiration date 'Thu Feb 13 16:39:50 CET 2042'.
20220307/144221.286 - U02000314 Initial challenge has been requested.
20220307/144221.471 - U00029408 Signature verification of agent 'TLS_GTW_01' failed.\
20220307/144221.472 - U02000041 Shutdown Agent 'TLS_GTW_01'.
20220307/144221.475 - U02000383 Web Socket connection closed with status code '1006 (Disconnected)'.
20220307/144221.487 - U02000002 Agent 'TLS_GTW_01' version '21.0.2+build.31' ended abnormally.
Release : 21.0.2 Component : AUTOMATION ENGINE
This is prone to be configuration issue.
Check the configuration file of the TLS Gateway, make that the parameter is not commented
The problem can be easily solved in the client 0 > Administration > Agent > TLS-GW > Reset Agent Public Key.
Uncomment this line in the configuration file and restart the TLS-Gateway.