Hi Martin, currently there's not automatic failover for Graylog2. Selecting a master node is (at the moment) a completely manual process. Graylog2 also doesn't support a multi-master mode.
You could probably work around that with some custom scripting, though. Cheers, Jochen On Wednesday, 26 November 2014 10:31:47 UTC+1, Martin Petak wrote: > > Hi, thanks for the articles, it was really interesting reading. > > I figured out the part with elastic and mongo as we already do have > experience with those in our infrastructure. What I wanted to figure out > was the high availability of graylog2 servers which is not solved in those > articles. > > In graylog2 servers, you need to manually specify which node is master. > This master then does periodic tasks and the others don't. I would like to > solve the problem when you have three nodes (two slaves and one master) and > the master dies. When this happens, I would love if one of the slaves took > the master role and continued the work. When the original master would be > fixed, it would join the cluster as slave, as there already is one master. > This is how Elastic is doing it. > > I experimented with some configuration and the graylog2 cluster can work > like that if you say, that all of the nodes are master. Then, the first > node in cluster stays master and the others are forced to be slaves. If > master dies, one of the slaves becomes master. When I do this > configuration, I get alert in graylog-web, that I had more then one master > in the cluster and that the other ones were forced to work as slaves, but > that 'I should still fix this' which is why I would like to know if there > is a proper way of configuring master/master cluster. > > Thanks! > Martin > > On Tuesday, November 25, 2014 6:51:13 PM UTC+1, Jochen Schalanda wrote: >> >> Hi Martin, >> >> without going into detail on your actual question, there is a great blog >> series by Scott Pack about highly-available Graylog2 setups which you might >> want to take a look at. >> >> - http://secopsmonkey.com/migrating-graylog2-servers.html >> - http://secopsmonkey.com/migrating-graylog2-servers-part-2.html >> - http://secopsmonkey.com/migrating-graylog2-servers-part-3.html >> - http://secopsmonkey.com/migrating-graylog2-servers-part-4.html >> - http://secopsmonkey.com/migrating-graylog2-servers-part-5.html >> - >> >> http://secopsmonkey.com/migrating-graylog2-servers-part-6-lessons-learned.html >> >> Cheers, >> Jochen >> > -- You received this message because you are subscribed to the Google Groups "graylog2" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
