Hi,
Any insights into this issue?
Thanks,Sumit
From: Sumit Nigam <[email protected]>
To: Hbase-user <[email protected]>
Sent: Tuesday, November 29, 2016 10:02 PM
Subject: Multi-homed hosts with Hbase
Hi,
I am using multi-homed kerberized hosts with hbase 0.98.
The /etc/hosts files are uniformly containing FQDNs for cluster nodes. However,
region server fails to register with master server with the error:
2016-11-17 15:05:47,700 WARN [regionserver54723] regionserver.HRegionServer:
error telling master we are up
com.google.protobuf.ServiceException: java.io.IOException: Couldn't setup
connection for INFACSDEVKERB/[email protected] to
INFACSDEVKERB/[email protected]
at
org.apache.hadoop.hbase.ipc.RpcClient.callBlockingMethod(RpcClient.java:1679)
at
org.apache.hadoop.hbase.ipc.RpcClient$BlockingRpcChannelImplementation.callBlockingMethod(RpcClient.java:1720)
at
org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos$RegionServerStatusService$BlockingStub.regionServerStartup(RegionServerStatusProtos.java:8277)
at
org.apache.hadoop.hbase.regionserver.HRegionServer.reportForDuty(HRegionServer.java:2190)
Caused by: javax.security.sasl.SaslException: GSS initiate failed [Caused by
GSSException: No valid credentials provided (Mechanism level: Server not found
in Kerberos database (7))]
at
com.sun.security.sasl.gsskerb.GssKrb5Client.evaluateChallenge(GssKrb5Client.java:211)
at
org.apache.hadoop.hbase.security.HBaseSaslRpcClient.saslConnect(HBaseSaslRpcClient.java:179)
The error indicates some DNS lookup problem. So, my question is do I need to
enable some config in Hbase to allow multi-homed hosts? Also, I assume that if
/etc/hosts is setup correctly, then entries in DNS server should not matter
given the order of lookup is /etc/hosts and then DNS in my setup. I looked at
some documentation and bugs (https://issues.apache.org/jira/browse/HBASE-12954
or https://issues.apache.org/jira/browse/HADOOP-8198) which seem to indicate
multi-home support is not straight forward?
Zookeeper is not managed by Hbase. As a next step, I will dump zookeeper data
from hbase shell to see what hostnames/ fqdns are being reported by master and
region server. Any other suggestions can I try?
Thanks,
Sumit
