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 <kea-users-boun...@lists.isc.org> on behalf of Wagner Vlastimil
- HZS Ústeckého kraje <vlastimil.wag...@hzscr.cz>
Date: Tuesday, October 29, 2024 at 8:00 AM
To: kea-users@lists.isc.org <kea-users@lists.isc.org>
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
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