High Avaibility

[Anto]

Hello

Sorry for the delay in responding. Currently in the system I have two
mysql servers configured as master-master. Freeradius world, totally
not know, so I can not tell them if the configuration is
"load-balancing" or just "high-availability".

The software we have developed connects to an IP (radius server) can
not specify more.

Asked why, if you can mount a balancer in the ip and balance between
other servers freeradius (detecting the fall), but would have to
configure this balancer in HA. Or have two servers and one as slave
(HA). As freeradius not know the world and I've searched, but have not
found information, I wanted to know a little more the functioning of
freeradius. Freeradius not know if flags or similar stored in memory,
etc., then the slave would not have these states, etc..

After read, I have been a little more clear, to indicate to me that
using two servers with two ips, might work. I thought it would be more
complicated because states would keep in memory or the like. The part
of the db (mysql) I have it resolved, the problem was with freeradius.

I found this:
http://wiki.freeradius.org/Fail-over
http://wiki.freeradius.org/Load-balancing

I try with what I have said. Thank you very much.

Regards
Anto

2012/3/3 hashim zayed <hashim.zayed at gmail.com>:
> If you are using mysql to store accounting and auth data the best solution
> is to have mysql cluster which is high available shared nothing DB (no need
> for any kind of shared storage ) with high performance ( 1 billion
> transaction as claimed ny oracle for the new version 7.2.4).
> By the way there is a white paper on using freeradiu with mysql cluster, you
> can find it in mysql website.
>
> On 2012 3 2 23:32, "McNutt, Justin M." <McNuttJ at missouri.edu> wrote:
>>
>> Be careful with load balancers too.  Some NAS don't work well through a
>> load balancer (Trapeze wireless controllers).
>>
>> --J
>>
>> From: Толик Шавловский
>> <tolik_shavlovsky at mail.ru<mailto:tolik_shavlovsky at mail.ru>>
>> Reply-To: Толик Шавловский
>> <tolik_shavlovsky at mail.ru<mailto:tolik_shavlovsky at mail.ru>>, FreeRadius
>> users mailing list
>> <freeradius-users at lists.freeradius.org<mailto:freeradius-users at lists.freeradius.org>>
>> Date: Thu, 1 Mar 2012 17:52:29 +0400
>> To: FreeRadius users mailing list
>> <freeradius-users at lists.freeradius.org<mailto:freeradius-users at lists.freeradius.org>>
>> Subject: Re[2]: High Avaibility
>>
>> Hi,
>>
>> if your NAS does not support 2 radius servers you can use load balancer
>> (ex fortinet).
>>
>>
>>
>>
>> 01 марта 2012, 15:37 от Phil Mayers
>> <p.mayers at imperial.ac.uk<mailto:p.mayers at imperial.ac.uk>>:
>> On 01/03/12 10:16, Anto wrote:
>> > Hello
>> >
>> > In the coming days I will set up a freeradius server for access
>> > control and accounting. I've been looking for information on
>> > freeradius and high availability, since my idea is to have two servers
>> > in case one fails, continue to operate with the other, but I just
>> > found information. So I turn to the list, in case I can recommend
>> > someone with experience on stage.
>> >
>> > I do not know if it is feasible to have a server as master and one
>> > slave, when the main falls, the other up the interface. If there is
>> > some kind of balancer radius and use both servers, etc..
>> This is a very vague question. You're going to get a lot of either
>> too-vague or too-specific answers.
>> A few things you need to specify:
>>   1. When you say "high availability" what are you hoping to achieve?
>>   2. How long can you tolerate when an unscheduled outage for? 1 second
>> or 60?
>>   3. Do your RADIUS servers talk to external data sources (SQL, LDAP)?
>>   4. Do you care about load-balancing, or just high-availability?
>> I'll make a few comments:
>> Most NASes support 2 (or more) RADIUS servers, and will fail over when
>> they detect an outage. For resilience, you just need to build two RADIUS
>> servers on different IPs, and specify these in your NAS.
>> You don't need a load-balancer or other complications, and they will
>> just make things less reliable.
>> Making "redundant" RADIUS servers is easy; you just build two machines,
>> and run FreeRADIUS on each with the same config. The "hard" bit is
>> replicating any data sources between them (LDAP, SQL) and handling
>> "writes" such as accounting packets into SQL, SQL session counters, and
>> so on.
>> You need to be more specific about what you're doing and what you want
>> to achieve.
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