Hi Probably some networking issues. I would log in to each node at a time and verify connectivity to all others. Make sure that e.g. "node1" resolves correctly on all RHEL hosts as well as inside docker containers.
-- Jan Høydahl, search solution architect Cominvent AS - www.cominvent.com > 1. jun. 2018 kl. 15:35 skrev Ronja Koistinen <ronja.koisti...@helsinki.fi>: > > Hello, > > I am running Solr Cloud 6.6.4 in Docker containers on three RHEL7 > virtual machines. The containers are networked in bridge mode. > > I can access the Solr Admin web interface on the nodes and I can see all > nodes in the /live_nodes tree in ZooKeeper. > > ZooKeeper is installed directly on the host virtual machines, i.e. > ZooKeeper is not in containers, only the Solr nodes are. > > When I try to create a new collection through > /solr/admin/collections?action=CREATE I get the error > "SolrServerException:Server refused connection at http://node1:8984/solr". > > Please see attached log files. I tried to identify the relevant portions > from my Solr logs so not everything is included. (The logs have also > been slightly edited to conceal potentially sensitive information and > actual hostnames.) > > Troubleshooting so far: "wget" inside the Solr container on node0 is > able to connect to the Solr containers running on node1 and node2, so it > should not be a routing or firewall issue. > > -- > Ronja Koistinen > University of Helsinki > <api_command.txt><node0_solr.log><node1_solr.log><node2_solr.log>