The mostfrequent cause for this is non-compliant clients that do not set
the SECS field on retries. If clients are not setting this field > 0 on
retries they will not be detected as unacked. Take a look at the packet
capture and/or try setting this to 0.
See:
https://kea.readthedocs.io/en/latest/arm/hooks.html#load-balancing-configuration.
Following the sample config there is discussion of these parameters.
On 6/23/20 3:50 PM, Ismael Suarez wrote:
With a similar config (basically the same), I am facing the same situation on
1.6.2. Anyone care to point out some obvios configs that we might be missing?
--
Ism
-----Original Message-----
From: Pizu <[email protected]<mailto:pizu%20%[email protected]%3e>>
To: [email protected]<mailto:[email protected]>
Subject: [Kea-users] HA - Hot-Stanby Problem - Kea v1.6.1/2
Date: Mon, 22 Jun 2020 16:47:23 +0200
Hi,
Am testing the HA and if I switch off the primary node nothing works. can you
please help?
Primary Configuration:
"hooks-libraries": [{
"library": "/usr/local/lib/kea/hooks/libdhcp_lease_cmds.so",
"parameters": {}
}, {
"library": "/usr/local/lib/kea/hooks/libdhcp_stat_cmds.so",
"parameters": {}
}, {
"library": "/usr/local/lib/kea/hooks/libdhcp_ha.so",
"parameters": {
"high-availability": [{
"heartbeat-delay": 10000,
"max-ack-delay": 10000,
"max-response-delay": 45000,
"max-unacked-clients": 10,
"mode": "hot-standby",
"peers": [{
"auto-failover": true,
"name": "mstkeadhcpsrv01.corporate.intra",
"role": "primary",
"url": "http://172.16.193.39:8080/";
}, {
"auto-failover": true,
"name": "ztnkeadhcpsrv01.corporate.intra",
"role": "standby",
"url": "http://172.16.60.39:8080/";
}
],
"send-lease-updates": true,
"sync-leases": true,
"sync-page-limit": 10000,
"sync-timeout": 60000,
"this-server-name":
"mstkeadhcpsrv01.corporate.intra"
}
]
}
}
],
Standby Configuration:
"hooks-libraries": [{
"library": "/usr/local/lib/kea/hooks/libdhcp_lease_cmds.so",
"parameters": {}
}, {
"library": "/usr/local/lib/kea/hooks/libdhcp_stat_cmds.so",
"parameters": {}
}, {
"library": "/usr/local/lib/kea/hooks/libdhcp_ha.so",
"parameters": {
"high-availability": [{
"heartbeat-delay": 10000,
"max-ack-delay": 10000,
"max-response-delay": 45000,
"max-unacked-clients": 10,
"mode": "hot-standby",
"peers": [{
"auto-failover": true,
"name": "mstkeadhcpsrv01.corporate.intra",
"role": "primary",
"url": "http://172.16.193.39:8080/";
}, {
"auto-failover": true,
"name": "ztnkeadhcpsrv01.corporate.intra",
"role": "standby",
"url": "http://172.16.60.39:8080/";
}
],
"send-lease-updates": true,
"sync-leases": true,
"sync-page-limit": 10000,
"sync-timeout": 60000,
"this-server-name":
"ztnkeadhcpsrv01.corporate.intra"
}
]
}
}
],
Regards,
David
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_______________________________________________
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Contact us at https://www.isc.org/contact/ for more information.
To unsubscribe visit https://lists.isc.org/mailman/listinfo/kea-users.
Kea-users mailing list
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