Hi,
We weren’t able to find the answers to our question in the link provided. We’d like to elaborate a bit on what we are looking for: We have found this link: https://access.redhat.com/site/articles/27136,the maximum latency specified there is 2 ms. In the configuration we have got here (based on CentOS HA using Pacemaker), the latency we’ve got is 25 ms. - Are we supposed to face any problems with the heartbeat network in our HA (done by Corosync), assuming we keep the latency to be 25 ms? - In case there are any problems with that, how can we reconfigure the maximum latency, and what value should it be? Thanks, Lev Am Sonntag, 6. April 2014, 11:29:02 schrieb Lev G: >>* We use Corosync in CentOS 6. *>>* There are few questions: *>>* What is the highest network latency the Corosync can survive with its *>>* default configuration? *>>* How is possible to adjust the Corosync latency in high latency network *>>* infrastructure? *>> >>* >> Hi, *>>* >> Can you please advise what the default latency of heartbeat keep alive *>> >>* packets is? *>> >>* > For Corosync or Heartbeat?* >>* > And I'd have thought the latency would be a function of your network *>> >>* infrastructure, not the software.* >> >>* >> Another question, whether the latency can be customized? If yes, how >> >>can *>> >>* it be done?* >> >>* >> Thanks in advance, *>>* >> Lev * > Hi, > if you want to operate your cluster over unreliable, high-latency link s (internet) than perhaps you should read this: > http://clusterlabs.org/doc/en-US/Pacemaker/1.1/html/Pacemaker_Explained/ch15.html > Mit freundlichen Grüßen, > Michael Schwartzkopff > -- > [*] sys4 AG > http://sys4.de, +49 (89) 30 90 46 64, +49 (162) 165 0044 > Franziskanerstraße 15, 81669 München > Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 > Vorstand: Patrick Ben Koetter, Marc Schiffbauer > Aufsichtsratsvorsitzender: Florian Kirstein
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