Please start a new email thread, with a new subject, for any questions you want answered. Hijacking someone else's thread where they're trying to get answers to their own questions is impolite.
Tim On May 4, 2016 6:34 AM, "Jstaceyss" <jenniferstaceysouth...@gmail.com> wrote: > Tim, > > I'm not sure if you can help but this site with jms codes is ruining my > life. The responsibility of the actions of others is not being taken. > Please stop it. I am beginning to beg for help > On May 2, 2016 11:46 PM, "Tim Bain [via ActiveMQ]" < > ml-node+s2283324n4711461...@n4.nabble.com> wrote: > > > It's not possible to have a quorum (i.e. > 50%) in all scenarios when you > > only have two groupings and both of them could disappear entirely. By > > definition, to have a quorum after the loss of one grouping, the lost > > grouping must be < 50% and the one that remains must be > 50%, so in the > > inverse situation you can't possibly have a quorum. This is why three is > > typically the number used to ensure survivability of the loss of a single > > item (whether an "item" is a process, a host, a rack, or a datacenter). > > So > > either you need a third datacenter in a third location, or you need to > put > > two groupings in a single geographic site (in separate buildings, for > > example, or different floors or rooms, or on the other side of town), and > > accept that you're sacrificing the ability to survive certain > catastrophes > > in order to save the cost of locating the third datacenter somewhere > > geographically distant. > > > > Tim > > > > On Sun, May 1, 2016 at 8:37 AM, sekaijin <[hidden email] > > <http:///user/SendEmail.jtp?type=node&node=4711461&i=0>> > > wrote: > > > > > Hi > > > > > > There is a little thing I do not understand in the election of the > > master. > > > > > > I have two geographic site (Paris, Versailles). > > > the quorum is (n / 2) +1 > > > if I have two servers in each site > > > the quorum is (4/2) +1 = 3 > > > so if I have a blackout on the site (eg fire) I do not have the quorum > > > because I have only two servers > > > > > > if I have two server on a site and on the other > > > the quorum is (3/2) +1 = 2 > > > so if I have a blackout on first site (eg fire) I do not have a quorum > > > because I have only one server > > > > > > It is impossible to secure the cluster? > > > > > > A+JYT > > > > > > > > > > > > -- > > > View this message in context: > > > > > > http://activemq.2283324.n4.nabble.com/clustering-architecture-tp4711412p4711418.html > > > Sent from the ActiveMQ - User mailing list archive at Nabble.com. > > > > > > > > > ------------------------------ > > If you reply to this email, your message will be added to the discussion > > below: > > > > > http://activemq.2283324.n4.nabble.com/clustering-architecture-tp4711412p4711461.html > > To start a new topic under ActiveMQ - User, email > > ml-node+s2283324n2341805...@n4.nabble.com > > To unsubscribe from ActiveMQ - User, click here > > < > http://activemq.2283324.n4.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=2341805&code=SmVubmlmZXJzdGFjZXlzb3V0aGFyZEBnbWFpbC5jb218MjM0MTgwNXwtMTM1MDkyOTA0Nw== > > > > . > > NAML > > < > http://activemq.2283324.n4.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml > > > > > > > > > -- > View this message in context: > http://activemq.2283324.n4.nabble.com/clustering-architecture-tp4711412p4711543.html > Sent from the ActiveMQ - User mailing list archive at Nabble.com.
