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Unable to connect to Zookeeper after Solrcloud restart

New Contributor

Hi,

I have a solrcloud cluster with 2 solr nodes and one external zookeeper node as docker containers. Everything was working perfectly. I restarted solr nodes and zookeeper, now solr is throwing

org.apache.solr.common.SolrException: Error processing the request. CoreContainer is either not initialized or shutting down.

Here is solr.log

	_       Welcome to Apache Solr™ version 6.4.2
2017-04-01 10:32:37.028 INFO  (main) [   ] o.a.s.s.SolrDispatchFilter / __| ___|
 |_ _   Starting in cloud mode on port 8983
2017-04-01 10:32:37.028 INFO  (main) [   ] o.a.s.s.SolrDispatchFilter \__ \/ _ \
 | '_|  Install dir: /opt/solr
2017-04-01 10:32:37.045 INFO  (main) [   ] o.a.s.s.SolrDispatchFilter |___/\___/
_|_|    Start time: 2017-04-01T10:32:37.029Z
2017-04-01 10:32:37.059 INFO  (main) [   ] o.a.s.c.SolrResourceLoader Using syst
em property solr.solr.home: /opt/solr/server/solr
2017-04-01 10:32:37.215 WARN  (main-SendThread(10.42.215.52:2181)) [   ] o.a.z.C
lientCnxn Session 0x0 for server null, unexpected error, closing socket connecti
on and attempting reconnect
java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717
)
at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocket
NIO.java:361)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)
2017-04-01 10:32:38.318 WARN  (main-SendThread(10.42.215.52:2181)) [   ] o.a.z.C
lientCnxn Session 0x0 for server null, unexpected error, closing socket connecti
on and attempting reconnect
java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717
)
at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocket
NIO.java:361)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)
2017-04-01 10:32:39.420 WARN  (main-SendThread(10.42.215.52:2181)) [   ] o.a.z.C
lientCnxn Session 0x0 for server null, unexpected error, closing socket connecti
on and attempting reconnect
java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717
)
at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocket
NIO.java:361)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)
2017-04-01 10:32:40.521 WARN  (main-SendThread(10.42.215.52:2181)) [   ] o.a.z.C
lientCnxn Session 0x0 for server null, unexpected error, closing socket connecti
on and attempting reconnect

Did anybody faced similar issues ? Please help.