Hi , I have deployed couple of nifi on linux container on different machine.when I am trying to configure with external zookeeper, I am getting below errorand hence my UI is not coming. I have mentioned below my nifi.properties file that i have copied from container. also i am getting flow.xml.gz file in all node. Please let me know what I am missing. Thanks, Kamal WARN [main] o.a.nifi.controller.StandardFlowService Failed to connect to cluster due to: org.apache.nifi.cluster.protocol.ProtocolException: Failed to create socket to 172.16.184.71:9090 due to: java.net.ConnectException: Connection refused (Connection refused) nifi.properties nifi.flow.configuration.file=./conf/flow.xml.gz nifi.flow.configuration.archive.enabled=true nifi.flow.configuration.archive.dir=./conf/archive/ nifi.flow.configuration.archive.max.time=30 days nifi.flow.configuration.archive.max.storage=500 MB nifi.flow.configuration.archive.max.count= nifi.flowcontroller.autoResumeState=true nifi.flowcontroller.graceful.shutdown.period=10 sec nifi.flowservice.writedelay.interval=500 ms nifi.administrative.yield.duration=30 sec # If a component has no work to do (is "bored"), how long should we wait before checking again for work? nifi.bored.yield.duration=10 millis nifi.queue.backpressure.count=10000 nifi.queue.backpressure.size=1 GB nifi.authorizer.configuration.file=./conf/authorizers.xml nifi.login.identity.provider.configuration.file=./conf/login-identity-providers. xml nifi.templates.directory=./conf/templates nifi.ui.banner.text= nifi.ui.autorefresh.interval=30 sec nifi.nar.library.directory=./lib nifi.nar.working.directory=./work/nar/ nifi.documentation.working.directory=./work/docs/components #################### # State Management # #################### nifi.state.management.configuration.file=./conf/state-management.xml # The ID of the local state provider nifi.state.management.provider.local=local-provider # The ID of the cluster-wide state provider. This will be ignored if NiFi is not clustered but must be populated if running in a cluster. nifi.state.management.provider.cluster=zk-provider # Specifies whether or not this instance of NiFi should run an embedded ZooKeepe r server nifi.state.management.embedded.zookeeper.start=false # Properties file that provides the ZooKeeper properties to use if <nifi.state.m anagement.embedded.zookeeper.start> is set to true nifi.state.management.embedded.zookeeper.properties=./conf/zookeeper.properties # H2 Settings nifi.database.directory=./database_repository nifi.h2.url.append=;LOCK_TIMEOUT=25000;WRITE_DELAY=0;AUTO_SERVER=FALSE # FlowFile Repository nifi.flowfile.repository.implementation=org.apache.nifi.controller.repository.Wr iteAheadFlowFileRepository nifi.flowfile.repository.wal.implementation=org.apache.nifi.wali.SequentialAcces sWriteAheadLog nifi.flowfile.repository.directory=./flowfile_repository nifi.flowfile.repository.partitions=256 nifi.flowfile.repository.checkpoint.interval=2 mins nifi.flowfile.repository.always.sync=false nifi.swap.manager.implementation=org.apache.nifi.controller.FileSystemSwapManage r nifi.queue.swap.threshold=20000 nifi.swap.in.period=5 sec nifi.swap.in.threads=1 nifi.swap.out.period=5 sec nifi.swap.out.threads=4 # Content Repository nifi.content.repository.implementation=org.apache.nifi.controller.repository.Fil eSystemRepository nifi.content.claim.max.appendable.size=1 MB nifi.content.claim.max.flow.files=100 nifi.content.repository.directory.default=./content_repository nifi.content.repository.archive.max.retention.period=12 hours nifi.content.repository.archive.max.usage.percentage=50% nifi.content.repository.archive.enabled=true nifi.content.repository.always.sync=false nifi.content.viewer.url=../nifi-content-viewer/ # Provenance Repository Properties nifi.provenance.repository.implementation=org.apache.nifi.provenance.PersistentP rovenanceRepository nifi.provenance.repository.debug.frequency=1_000_000 nifi.provenance.repository.encryption.key.provider.implementation= nifi.provenance.repository.encryption.key.provider.location= nifi.provenance.repository.encryption.key.id= nifi.provenance.repository.encryption.key= # Persistent Provenance Repository Properties nifi.provenance.repository.directory.default=./provenance_repository nifi.provenance.repository.max.storage.time=24 hours nifi.provenance.repository.max.storage.size=1 GB nifi.provenance.repository.rollover.time=30 secs nifi.provenance.repository.rollover.size=100 MB nifi.provenance.repository.query.threads=2 nifi.provenance.repository.index.threads=2 nifi.provenance.repository.compress.on.rollover=true nifi.provenance.repository.always.sync=false nifi.provenance.repository.journal.count=16 # Comma-separated list of fields. Fields that are not indexed will not be search able. Valid fields are: # EventType, FlowFileUUID, Filename, TransitURI, ProcessorID, AlternateIdentifie rURI, Relationship, Details nifi.provenance.repository.indexed.fields=EventType, FlowFileUUID, Filename, Pro cessorID, Relationship # FlowFile Attributes that should be indexed and made searchable. Some examples to consider are filename, uuid, mime.type nifi.provenance.repository.indexed.attributes= # Large values for the shard size will result in more Java heap usage when searc hing the Provenance Repository # but should provide better performance nifi.provenance.repository.index.shard.size=500 MB # Indicates the maximum length that a FlowFile attribute can be when retrieving a Provenance Event from # the repository. If the length of any attribute exceeds this value, it will be truncated when the event is retrieved. nifi.provenance.repository.max.attribute.length=65536 nifi.provenance.repository.concurrent.merge.threads=2 nifi.provenance.repository.warm.cache.frequency=1 hour # Volatile Provenance Respository Properties nifi.provenance.repository.buffer.size=100000 # Component Status Repository nifi.components.status.repository.implementation=org.apache.nifi.controller.stat us.history.VolatileComponentStatusRepository nifi.components.status.repository.buffer.size=1440 nifi.components.status.snapshot.frequency=1 min # Site to Site properties nifi.remote.input.host=172.16.184.73 nifi.remote.input.secure=true nifi.remote.input.socket.port=8082 nifi.remote.input.http.enabled=true nifi.remote.input.http.transaction.ttl=30 sec nifi.remote.contents.cache.expiration=30 secs # web properties # nifi.web.war.directory=./lib nifi.web.http.host= nifi.web.http.port= nifi.web.http.network.interface.default= nifi.web.https.host=82ca11041454 nifi.web.https.port=8443 nifi.web.https.network.interface.default= nifi.web.jetty.working.directory=./work/jetty nifi.web.jetty.threads=200 nifi.web.max.header.size=16 KB nifi.web.proxy.context.path= nifi.web.proxy.host=172.16.184.73:8443 # security properties # nifi.sensitive.props.key= nifi.sensitive.props.key.protected= nifi.sensitive.props.algorithm=PBEWITHMD5AND256BITAES-CBC-OPENSSL nifi.sensitive.props.provider=BC nifi.sensitive.props.additional.keys= nifi.security.keystore=/opt/nifi/nifi-current/conf/keystore.jks nifi.security.keystoreType=JKS nifi.security.keystorePasswd=D+BzrySVzKhwkYsB+qWJcCqgxSzVR1VrLqx nifi.security.keyPasswd=D+BzrySVzKhwkYsB+qWJcCqg nifi.security.truststore=/opt/nifi/nifi-current/conf/truststore.jks nifi.security.truststoreType=JKS nifi.security.truststorePasswd=K5E+6Mkcq38D0L8K0hzdhN2Ws0Fl3s nifi.security.needClientAuth= nifi.security.user.authorizer=managed-authorizer nifi.security.user.login.identity.provider= nifi.security.ocsp.responder.url= nifi.security.ocsp.responder.certificate= # OpenId Connect SSO Properties # nifi.security.user.oidc.discovery.url= nifi.security.user.oidc.connect.timeout=5 secs nifi.security.user.oidc.read.timeout=5 secs nifi.security.user.oidc.client.id= nifi.security.user.oidc.client.secret= nifi.security.user.oidc.preferred.jwsalgorithm= # Apache Knox SSO Properties # nifi.security.user.knox.url= nifi.security.user.knox.publicKey= nifi.security.user.knox.cookieName=hadoop-jwt nifi.security.user.knox.audiences= # Identity Mapping Properties # # These properties allow normalizing user identities such that identities coming from different identity providers # (certificates, LDAP, Kerberos) can be treated the same internally in NiFi. The following example demonstrates normalizing # DNs from certificates and principals from Kerberos into a common identity stri ng: # # nifi.security.identity.mapping.pattern.dn=^CN=(.*?), OU=(.*?), O=(.*?), L=(.*? ), ST=(.*?), C=(.*?)$ # nifi.security.identity.mapping.value.dn=$1@$2 # nifi.security.identity.mapping.transform.dn=NONE # nifi.security.identity.mapping.pattern.kerb=^(.*?)/instance@(.*?)$ # nifi.security.identity.mapping.value.kerb=$1@$2 # nifi.security.identity.mapping.transform.kerb=UPPER # Group Mapping Properties # # These properties allow normalizing group names coming from external sources li ke LDAP. The following example # lowercases any group name. # # nifi.security.group.mapping.pattern.anygroup=^(.*)$ # nifi.security.group.mapping.value.anygroup=$1 # nifi.security.group.mapping.transform.anygroup=LOWER # cluster common properties (all nodes must have same values) # nifi.cluster.protocol.heartbeat.interval=5 sec nifi.cluster.protocol.is.secure=true # cluster node properties (only configure for cluster nodes) # nifi.cluster.is.node=true nifi.cluster.node.address=172.16.184.73 nifi.cluster.node.protocol.port=9090 nifi.cluster.node.protocol.threads=10 nifi.cluster.node.protocol.max.threads=50 nifi.cluster.node.event.history.size=25 nifi.cluster.node.connection.timeout=5 sec nifi.cluster.node.read.timeout=5 sec nifi.cluster.node.max.concurrent.requests=100 nifi.cluster.firewall.file= nifi.cluster.flow.election.max.wait.time=5 mins nifi.cluster.flow.election.max.candidates= # zookeeper properties, used for cluster management # nifi.zookeeper.connect.string=172.16.184.9:2182,172.16.184.9:2183,172.16.184.9:2 184 nifi.zookeeper.connect.timeout=3 secs nifi.zookeeper.session.timeout=3 secs nifi.zookeeper.root.node=/nifi # Zookeeper properties for the authentication scheme used when creating acls on znodes used for cluster management # Values supported for nifi.zookeeper.auth.type are "default", which will apply world/anyone rights on znodes # and "sasl" which will give rights to the sasl/kerberos identity used to authen ticate the nifi node # The identity is determined using the value in nifi.kerberos.service.principal and the removeHostFromPrincipal # and removeRealmFromPrincipal values (which should align with the kerberos.remo veHostFromPrincipal and kerberos.removeRealmFromPrincipal # values configured on the zookeeper server). nifi.zookeeper.auth.type= nifi.zookeeper.kerberos.removeHostFromPrincipal= nifi.zookeeper.kerberos.removeRealmFromPrincipal= # kerberos # nifi.kerberos.krb5.file= # kerberos service principal # nifi.kerberos.service.principal= nifi.kerberos.service.keytab.location= # kerberos spnego principal # nifi.kerberos.spnego.principal= nifi.kerberos.spnego.keytab.location= nifi.kerberos.spnego.authentication.expiration=12 hours # external properties files for variable registry # supports a comma delimited list of file locations nifi.variable.registry.properties=nifi@82ca11041454:/opt/nifi/nifi-current/conf$ ... 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