You can't. Zookeeper needs a majority. One node is not a majority of a three node ensemble.
There is no way to split a Solr Cloud cluster across two datacenters and have high availability. You can do that with three datacenters. You can probably bring up a new Zookeeper ensemble and configure the Solr cluster to talk to it. wunder Walter Underwood wun...@wunderwood.org http://observer.wunderwood.org/ (my blog) > On Oct 29, 2015, at 10:08 AM, Matteo Grolla <matteo.gro...@gmail.com> wrote: > > I'm designing a solr cloud installation where nodes from a single cluster > are distributed on 2 datacenters which are close and very well connected. > let's say that zk nodes zk1, zk2 are on DC1 and zk2 is on DC2 and let's say > that DC1 goes down and the cluster is left with zk3. > how can I restore a zk quorum from this situation? > > thanks