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more info on F5 was Re: OpenLDAP Cluster+Alteon
where i can more info on that f5.
--
roger
--- Markus Storm <Markus.Storm@mediaWays.net> wrote:
> Go for multi-master.
> We've been happily running it for about a year, using F5 loadbalancers.
>
> Markus
>
> Syahrul Sazli Shaharir wrote:
> >
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA1
> >
> > Hi,
> >
> > I am in a process of designing a highly-available LDAP service. The goals
> > of the design are (1) simple (2) scalable (3) redundant (4) Use existing
> > Alteon load balancers, which fan out connections to one IP to multiple
> > IPs.
> >
> > The best I can think of so far:-
> >
> > LDAP clients
> > |
> > ______|______
> > |___Alteon____|
> > | | |
> > | | |
> > | | |
> > o o o
> > ldap1 ldap2 ldap3
> >
> > ldap1, ldap2, ldap3 are multi-master OpenLDAP servers. Should be most
> > elegant, but AFAIK multi-master support in OpenLDAP is still experimental.
> >
> > Single master with chaining is not available in OpenLDAP, so the only
> > alternative is single master with referrals:-
> >
> > LDAP clients
> > | |
> > ___|________|___
> > |_____Alteon_____|
> > | | ||||
> > | | ||||
> > | | ||||
> > o o oooo
> > l1 l2 slaves
> >
> > l2 is cold standby master, eg l1 and l2 maintains heartbeat, if l1 down,
> > l2 automatically wakes up and takes over, and vice versa. Both runs slurpd
> > and updates all the slaves as required. Not as pretty as I want [ Masters
> > not scalable, and LDAP clients need to handle write referrals correctly ],
> > but should work.
> >
> > Ideas? Past experiences? TIA! :)
> >
> > - --sazli
> > ** PGP/GnuPG Public key:- **
> > http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x4F90071F
> > Key fingerprint: 0E8D AFD5 7544 E481 885A BEAA E338 B2A3 4F90 071F
> >
> > -----BEGIN PGP SIGNATURE-----
> > Version: GnuPG v1.0.6 (FreeBSD)
> >
> > iD8DBQE8Z3Nm4ziyo0+QBx8RAqruAJ0XPrzdnds60o1KoIVp2HiDJL3f0wCfRELX
> > Q57uifN8Z68S6MV0LC+C0XI=
> > =w96u
> > -----END PGP SIGNATURE-----
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