Have you considered putting in a “watchdog” timer at the operating system level to restart the OS after a number of minutes (if network link is down) to allow your network gear more time to recover?
From: Kea-users <[email protected]> on behalf of Wagner Vlastimil - HZS Ústeckého kraje <[email protected]> Date: Tuesday, October 29, 2024 at 8:00 AM To: [email protected] <[email protected]> Subject: [EXTERNAL] [Kea-users] Kea fail start after power outage, mysql connect problem Hi I have Kea servers on places where sometimes doesnt work power (longer than UPS) I have config, leases and hosts in database MySQL When power is back server get up faster than switches and routers so interface is down and Kea doesnt start říj 29 12:42:15 dhcp-01.hzsulk.cz kea-dhcp4[8647]: ERROR [kea-dhcp4.dhcp4.140105088432256] DHCP4_CONFIG_LOAD_FAIL configuration error using file: /etc/kea/kea-dhcp4.conf, reason: during update from config backend database: Unknown server host 'db.example.com' (-2) říj 29 12:42:15 dhcp-01.hzsulk.cz kea-dhcp4[8647]: ERROR [kea-dhcp4.dhcp4.140105088432256] DHCP4_INIT_FAIL failed to initialize Kea server: configuration error using file '/etc/kea/kea-dhcp4.conf': during update from config backend database: Unknown server host 'db.example.com' > říj 29 12:42:15 dhcp-01.hzsulk.cz kea-dhcp4[8647]: ERROR [kea-dhcp4.dhcp4.140105088432256] DHCP4_PARSER_COMMIT_FAIL parser failed to commit changes: during update from config backend database: Unknown server host 'db.example.com' (-2) Config is: "Dhcp4": { "server-tag": "DHCP-01", "interfaces-config": { "interfaces": ["ens33"], "service-sockets-max-retries": 100, "service-sockets-retry-wait-time": 5000 }, "config-control": { "config-databases": [{ "type": "mysql", "name": "kea", "user": "kea", "password": "fhgfethfgthtfeg", "host": "db.example.com", "port": 3306, # "retry-on-startup": "true", "max-reconnect-tries" : 30000, "reconnect-wait-time": 3000 }], "config-fetch-wait-time": 20 }, No setting work to try connect again VW -- ISC funds the development of this software with paid support subscriptions. Contact us at https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.isc.org%2Fcontact%2F&data=05%7C02%7Cdan.geist%40cox.com%7C34ce6c43dd16473322f208dcf8113d70%7C9feebc97ff0442c9a152767073872118%7C1%7C0%7C638658000201454565%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=YyAIuowltu%2FHI4FiN5Q5OU5Zzg5LoHeXIZw%2BfNK%2Bnn0%3D&reserved=0<https://www.isc.org/contact/> for more information. To unsubscribe visit https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.isc.org%2Fmailman%2Flistinfo%2Fkea-users&data=05%7C02%7Cdan.geist%40cox.com%7C34ce6c43dd16473322f208dcf8113d70%7C9feebc97ff0442c9a152767073872118%7C1%7C0%7C638658000201479405%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=2AVX6msPo9CIFVkdBWmUu2ZM2e%2BFr9Hwid9cg4CM9Hg%3D&reserved=0<https://lists.isc.org/mailman/listinfo/kea-users>. Kea-users mailing list [email protected] https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.isc.org%2Fmailman%2Flistinfo%2Fkea-users&data=05%7C02%7Cdan.geist%40cox.com%7C34ce6c43dd16473322f208dcf8113d70%7C9feebc97ff0442c9a152767073872118%7C1%7C0%7C638658000201494671%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=tYR3rNuy1%2FmtiOmtiagSOhKedTCpQqSWfGOqFowT1IE%3D&reserved=0<https://lists.isc.org/mailman/listinfo/kea-users>
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