An Active Active Cluster would be great, but I need always one Virtual IP or? To got an Downtime of less 2 seconds would be interested. But this switch of the Virtual IP from Host to host is needed verytime or?
On 01/23/2012 01:58 PM, Robert Schumann wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Heyho, > > Am 23.01.2012 09:59, schrieb Niclas Müller: > >> I've build a cluster with one pacemaker resource named ClusterIP. >> The change by failover is very fast and is ok. My problem is that >> services like apache or mysql take at least 10-15 seconds to >> respond after IP takeover. Is there a change to fast this up ? >> > Maybe you are confusing the techniques here. Active/Passive mode > _always_ comes with downtime at a failover. You cannot reduce it to > zero, nor is pushing this optimization very senseful (but instead you > can easily break your system with setting timeouts so low that nothing > will ever work or respond after that). In this A/P mode it doesn't > really matter to have 10 or 20 seconds downtime as it also depends on > the hardware, drbd filesystem, used data, etc. If you want to > experience "real" high availability without any downtime you'll have > to go the Active/Active way and/or use Load Balancing. > > Cheers > Robert > - -- > > |-------------------------------------------------address-+ > | work: jacob-und-wilhelm-grimm-zentrum > | geschwister-scholl-str. 1, 10117 berlin > | mail: humboldt-universität zu berlin > | computer- und medienservice > | unter den linden 6, 10099 berlin > |-------------------------------------------------contact-+ > | mail: [email protected] > | icq: 93163687 | xmpp: [email protected] > | fb: fb.com/rschumann | phone: +49(0)30-2093-70133 > |-------------------------------------------------gpg/pgp-+ > | key: remembrance.de/gpg/0xA5A5FAA2.asc > | fprnt: 9220-9732-7390-7A0C-5623-3336-4233-FDF8-A5A5-FAA2 > |---------------------------------------------------------+ > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.11 (GNU/Linux) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ > > iEYEARECAAYFAk8dWX4ACgkQQjP9+KWl+qI+QACbBMdYgLqzhI57T24hyYt4ihBq > zvMAoIkJ71IvjZEpiVSsGqArCwNP7VF3 > =Ps8L > -----END PGP SIGNATURE----- > _______________________________________________ > Linux-HA mailing list > [email protected] > http://lists.linux-ha.org/mailman/listinfo/linux-ha > See also: http://linux-ha.org/ReportingProblems _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
