Can you see if zookeeper node is up and running and can connect to the nifi nodes

On Wed, Oct 10, 2018 at 7:34 PM Saip, Alexander (NIH/CC/BTRIS) [C] <alexander.saip@nih.gov> wrote:

Hello,

 

We have three NiFi 1.7.1 nodes originally configured as independent instances, each on its own server. There is no firewall between them. When I tried to build a cluster following instructions here, NiFi failed to start on all of them, despite the fact that I even set nifi.cluster.protocol.is.secure=false in the nifi.properties file on each node. Here is the error in the log files:

 

2018-10-10 13:57:07,506 INFO [main] org.apache.nifi.NiFi Launching NiFi...

2018-10-10 13:57:07,745 INFO [main] o.a.nifi.properties.NiFiPropertiesLoader Determined default nifi.properties path to be '/opt/nifi-1.7.1/./conf/nifi.properties'

2018-10-10 13:57:07,748 INFO [main] o.a.nifi.properties.NiFiPropertiesLoader Loaded 125 properties from /opt/nifi-1.7.1/./conf/nifi.properties

2018-10-10 13:57:07,755 INFO [main] org.apache.nifi.NiFi Loaded 125 properties

2018-10-10 13:57:07,762 INFO [main] org.apache.nifi.BootstrapListener Started Bootstrap Listener, Listening for incoming requests on port 43744

2018-10-10 13:59:15,056 ERROR [main] org.apache.nifi.NiFi Failure to launch NiFi due to java.net.ConnectException: Connection timed out (Connection timed out)

java.net.ConnectException: Connection timed out (Connection timed out)

        at java.net.PlainSocketImpl.socketConnect(Native Method)

        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)

        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)

        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)

        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)

        at java.net.Socket.connect(Socket.java:589)

        at java.net.Socket.connect(Socket.java:538)

        at org.apache.nifi.BootstrapListener.sendCommand(BootstrapListener.java:100)

        at org.apache.nifi.BootstrapListener.start(BootstrapListener.java:83)

        at org.apache.nifi.NiFi.<init>(NiFi.java:102)

        at org.apache.nifi.NiFi.<init>(NiFi.java:71)

        at org.apache.nifi.NiFi.main(NiFi.java:292)

2018-10-10 13:59:15,058 INFO [Thread-1] org.apache.nifi.NiFi Initiating shutdown of Jetty web server...

2018-10-10 13:59:15,059 INFO [Thread-1] org.apache.nifi.NiFi Jetty web server shutdown completed (nicely or otherwise).

 

Without clustering, the instances had no problem starting. Since this is our first experiment building a cluster, I’m not sure where to look for clues.

 

Thanks in advance,

 

Alexander