NIFI Cluster Configuration Error

[#1]

Version 1.15.3

Windows Server 2019 Standard

# zookeeper properties, used for cluster management #
nifi.zookeeper.connect.string=nifi-inf-02:2181,nifi-inf-03:2181
nifi.zookeeper.connect.timeout=10 secs
nifi.zookeeper.session.timeout=10 secs
nifi.zookeeper.root.node=/nifi
nifi.zookeeper.client.secure=false
nifi.zookeeper.security.keystore=
nifi.zookeeper.security.keystoreType=
nifi.zookeeper.security.keystorePasswd=
nifi.zookeeper.security.truststore=
nifi.zookeeper.security.truststoreType=
nifi.zookeeper.security.truststorePasswd=
nifi.zookeeper.jute.maxbuffer=

After configuration of cluster the service spits the following error on startup.

Please check the configuration of the Cluster State Provider with ID [zk-provider] in the file D:\nifi-1.15.3\.\conf\state-management.xml
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:176)
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:101)
at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1884)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getObjectForBeanInstance(AbstractAutowireCapableBeanFactory.java:1284)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:345)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:330)
... 121 common frames omitted
Caused by: java.lang.IllegalStateException: Could not initialize State Providers because the Cluster State Provider is not valid. The following 1 Validation Errors occurred:
'Connect String' validated against '' is invalid because Connect String must contain at least one character that is not white space

[#2 · Accepted solution]

Hi @Tra ,

When you start NiFi in cluster mode (no-standalone), besides configuring ZooKeeper properties in nifi.properties you also need to configure it for State Management in the conf/state-management.xml file.

Make sure your zk-provider in that file looks like the example below:

    <cluster-provider>
        <id>zk-provider</id>
        <class>org.apache.nifi.controller.state.providers.zookeeper.ZooKeeperStateProvider</class>
        <property name="Connect String">nifi-inf-02:2181,nifi-inf-03:2181</property>
        <property name="Root Node">/nifi</property>
        <property name="Session Timeout">10 seconds</property>
        <property name="Access Control">Open</property>
    </cluster-provider>

Cheers,

André

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[#3]

Thank you so much!  I couldn't find anything on the web about this.  You saved the day!!!!!!!!!!!!