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<p class="MsoNormal"><span style="font-size:11.0pt">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?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="color:black">From:
</span></b><span style="color:black">Kea-users <kea-users-bounces@lists.isc.org> on behalf of Wagner Vlastimil - HZS Ústeckého kraje <Vlastimil.Wagner@hzscr.cz><br>
<b>Date: </b>Tuesday, October 29, 2024 at 8:00</span><span style="font-family:"Arial",sans-serif;color:black"> </span><span style="color:black">AM<br>
<b>To: </b>kea-users@lists.isc.org <kea-users@lists.isc.org><br>
<b>Subject: </b>[EXTERNAL] [Kea-users] Kea fail start after power outage, mysql connect problem<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt">Hi<br>
<br>
I have Kea servers on places where sometimes doesnt work power (longer than UPS)
<br>
I have config, leases and hosts in database MySQL<br>
When power is back server get up faster than switches and routers so interface is down and Kea doesnt start<br>
<br>
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) <br>
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' > <br>
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)
<br>
<br>
<br>
Config is:<br>
<br>
<br>
"Dhcp4": {<br>
"server-tag": "DHCP-01",<br>
"interfaces-config": {<br>
"interfaces": ["ens33"],<br>
"service-sockets-max-retries": 100,<br>
"service-sockets-retry-wait-time": 5000<br>
},<br>
"config-control": {<br>
"config-databases": [{<br>
"type": "mysql",<br>
"name": "kea",<br>
"user": "kea",<br>
"password": "fhgfethfgthtfeg",<br>
"host": "db.example.com",<br>
"port": 3306,<br>
# "retry-on-startup": "true",<br>
"max-reconnect-tries" : 30000,<br>
"reconnect-wait-time": 3000<br>
}],<br>
"config-fetch-wait-time": 20<br>
},<br>
<br>
No setting work to try connect again<br>
<br>
<br>
VW<br>
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