Am trying to add a new host to a cloudera managed cluster using wizard ... but it keeps failing with message "/tmp/scm_prepare_node.fj3OyPGR Connection reset " and server logs shows ... 2019-03-06 19:37:18,074 INFO scm-web-300:com.cloudera.cmf.service.ServiceHandlerRegistry: Executing command GlobalHostInstall GlobalHostInstallCommandArgs{sshPort=22, userName=sw, password=REDACTED, passphrase=REDACTED, privateKey=REDACTED, parallelInstallCount=10, cmRepoUrl=null, gpgKeyCustomUrl=null, gpgKeyOverrideBundle=<none>, unlimitedJCE=true, javaInstallStrategy=NONE, agentUserMode=ROOT, cdhVersion=-1, cdhRelease=NONE>, cdhRepoUrl=null, buildCertCommand=, sslCertHostname=null, reqId=20, skipPackageInstall=false, skipCloudConfig=false, hosts=[hadoop.localdomain.38], existingHosts=[]}.
2019-03-06 19:37:18,074 INFO scm-web-300:com.cloudera.cmf.command.flow.CmdStep: Executing command work: Execute 1 steps in sequence
2019-03-06 19:37:18,074 INFO scm-web-300:com.cloudera.cmf.command.flow.CmdStep: Executing command work: Install on 1 hosts.
2019-03-06 19:37:18,074 INFO scm-web-300:com.cloudera.cmf.command.flow.CmdStep: Executing command work: Install on hadoop.localdomain.38.
2019-03-06 19:37:18,074 INFO scm-web-300:com.cloudera.server.cmf.node.NodeConfiguratorService: Adding password-based configurator for hadoop.localdomain.38
2019-03-06 19:37:18,075 INFO scm-web-300:com.cloudera.server.cmf.node.NodeConfiguratorService: Submitted configurator for hadoop.localdomain.38 with id 21
2019-03-06 19:37:18,078 INFO NodeConfiguratorThread-20-0:com.cloudera.server.cmf.node.NodeConfiguratorProgress: hadoop.localdomain.38: Transitioning from INIT (PT0.004S) to CONNECT
2019-03-06 19:37:18,080 INFO scm-web-300:com.cloudera.enterprise.JavaMelodyFacade: Exiting HTTP Operation: Method:POST, Path:/add-hosts-wizard/install, Status:200
2019-03-06 19:37:18,080 INFO NodeConfiguratorThread-20-0:net.schmizz.sshj.transport.TransportImpl: Client identity string: SSH-2.0-SSHJ_0_14_0
2019-03-06 19:37:18,093 INFO NodeConfiguratorThread-20-0:net.schmizz.sshj.transport.TransportImpl: Server identity string: SSH-2.0-OpenSSH_7.4
2019-03-06 19:37:18,124 INFO NodeConfiguratorThread-20-0:com.cloudera.server.cmf.node.NodeConfiguratorProgress: hadoop.localdomain.38: Transitioning from CONNECT (PT0.046S) to AUTHENTICATE
2019-03-06 19:37:18,203 INFO NodeConfiguratorThread-20-0:com.cloudera.server.cmf.node.NodeConfiguratorProgress: hadoop.localdomain.38: Transitioning from AUTHENTICATE (PT0.078S) to MAKE_TEMP_DIR
2019-03-06 19:37:18,249 INFO NodeConfiguratorThread-20-0:com.cloudera.server.cmf.node.NodeConfigurator: Executing mktemp -d /tmp/scm_prepare_node.XXXXXXXX on hadoop.localdomain.38
2019-03-06 19:37:18,299 INFO NodeConfiguratorThread-20-0:com.cloudera.server.cmf.node.NodeConfiguratorProgress: hadoop.localdomain.38: Transitioning from MAKE_TEMP_DIR (PT0.097S) to COPY_FILES
2019-03-06 19:37:18,500 INFO NodeConfiguratorThread-20-0:com.cloudera.server.cmf.node.NodeConfigurator: Using key bundle from URL: https://archive.cloudera.com/cm6/6.0.1/allkeys.asc
2019-03-06 19:37:18,653 INFO NodeConfiguratorThread-20-0:com.cloudera.server.cmf.node.NodeConfiguratorProgress: hadoop.localdomain.38: Setting COPY_FILES as failed and done state
2019-03-06 19:37:18,653 INFO NodeConfiguratorThread-20-0:net.schmizz.sshj.transport.TransportImpl: Disconnected - BY_APPLICATION
2019-03-06 19:37:23,105 ERROR CommandPusher:com.cloudera.cmf.command.flow.WorkOutputs: CMD id: 3767 Failed to complete installation on host hadoop.localdomain.38.
2019-03-06 19:37:23,105 ERROR CommandPusher:com.cloudera.cmf.model.DbCommand: Command 3767(GlobalHostInstall) has completed. finalstate:FINISHED, success:false, msg:Failed to complete installation.
2019-03-06 19:37:23,490 INFO avro-servlet-hb-processor-0:com.cloudera.server.common.AgentAvroServlet: (3 skipped) AgentAvroServlet: heartbeat processing stats: average=13ms, min=10ms, max=39ms.
2019-03-06 19:37:23,655 INFO scm-web-465:com.cloudera.enterprise.JavaMelodyFacade: Entering HTTP Operation: Method:POST, Path:/add-hosts-wizard/installprogressdata.json
2019-03-06 19:37:23,656 INFO scm-web-465:com.cloudera.enterprise.JavaMelodyFacade: Exiting HTTP Operation: Method:POST, Path:/add-hosts-wizard/installprogressdata.json, Status:200
2019-03-06 19:37:53,438 INFO scm-web-463:com.cloudera.enterprise.JavaMelodyFacade: Entering HTTP Operation: Method:POST, Path:/add-hosts-wizard/installprogress
2019-03-06 19:37:53,439 INFO scm-web-463:com.cloudera.enterprise.JavaMelodyFacade: Exiting HTTP Operation: Method:POST, Path:/add-hosts-wizard/installprogress, Status:200 what could be the issue ?
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