[Kea-users] HA based on galera

[Klaus Steden]

We have HA-MySQL behind our Kea servers, but the scopes themselves are
sharded to avoid this kind of write contention. In our case, we've got a
network partition that serves as an effective bright line between who's
responsible for what.

cheers
Klaus

On Tue, Mar 13, 2018 at 4:18 AM, <lex at ezelink.com> wrote:

> Hey, pal, that's my thread ))
>
> if you installed boost and configure can't find it - use ./configure --help
> there should be option --with-boost-source or smth like that
>
>
>
> On 2018-03-13 15:10, Tobi Obadiah wrote:
>
>> Hello there,
>>
>> Am just getting started with Kea, on my attempt to install kea on
>> Ubuntu16.04 desktop  I keep getting the "Missing required header
>> files" errors
>> I have to manage to fix some of them but wonder if there is a standard
>> procedure to get this fix.  Though I have boost installed
>> "boost/shared_ptr.hpp"
>> is reported missing.
>>
>> I appreciate your help.
>>
>> On Tue, Mar 13, 2018 at 11:37 AM, Dominik Epple
>> <dominik.epple at gmail.com> wrote:
>>
>> Hi,
>>>
>>> it might help if you pick a dedicated galera write node, i.e. both
>>> of your kea servers write to the same galera node at each point in
>>> time. You can still configure that in a HA fashion by some
>>> active-passive loadbalancer or a failover IP or something.
>>>
>>> The other option would be that the kea code gets adjusted for
>>> running "galera-aware" but I am no expert on what exactly needs to
>>> happen there. But if it can't be fixed on application level, it
>>> probably can be fixed on system level by picking a dedicated write
>>> node.
>>>
>>> Dominik
>>>
>>> 2018-03-13 11:28 GMT+01:00 <lex at ezelink.com>:
>>>
>>> Hi guys,
>>>>
>>>> I'm running 2 kea dhcp servers and connect them to galera-mysql
>>>> cluster for HA.
>>>> Everything is ok, but sometimes i have this message in logs:
>>>>
>>>> 2018-03-13 14:14:45.036 ERROR [kea-dhcp4.alloc-engine/11864]
>>>> ALLOC_ENGINE_V4_ALLOC_ERROR [hwtype=1 b8:53:ac:xx:xx:xx],
>>>> cid=[01:b8:53:ac:xx:xx:xx], tid=0xa56d03a4: error during attempt
>>>> to allocate an IPv4 address: unable to execute for <SELECT
>>>> address, hwaddr, client_id, valid_lifetime, expire, subnet_id,
>>>> fqdn_fwd, fqdn_rev, hostname, state FROM lease4 WHERE client_id =
>>>> ? AND subnet_id = ?>, reason: Deadlock found when trying to get
>>>> lock; try restarting transaction (error code 1213)
>>>>
>>>> the network is relatively small - not more than 50-100 requests
>>>> per second
>>>>
>>>> How can I get rid of these messages? Cause after getting this
>>>> error, server sends NACK to client
>>>> _______________________________________________
>>>> Kea-users mailing list
>>>> Kea-users at lists.isc.org
>>>> https://lists.isc.org/mailman/listinfo/kea-users [1]
>>>>
>>>
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>>>
>>
>>
>>
>> Links:
>> ------
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>>
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