SSH connection timed out when running pipeline

Owned by Prashant Jaikumar (Unlicensed)
Jan 29, 2020
1 min read

Problem

Running a deployed pipeline fails with error:

java.io.IOException: com.jcraft.jsch.JSchException: java.net.ConnectException: Connection timed out (Connection timed out)
        at io.cdap.cdap.common.ssh.DefaultSSHSession.<init>(DefaultSSHSession.java:88) ~[na:na]
        at io.cdap.cdap.internal.app.runtime.distributed.remote.RemoteExecutionTwillPreparer.lambda$start$0(RemoteExecutionTwillPreparer.java:436) ~[na:na]
        at io.cdap.cdap.internal.app.runtime.distributed.remote.RemoteExecutionTwillRunnerService$ControllerFactory.lambda$create$0(RemoteExecutionTwillRunnerService.java:524) ~[na:na]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[na:1.8.0_232]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_232]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) ~[na:1.8.0_232]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ~[na:1.8.0_232]
        at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_232]
Caused by: com.jcraft.jsch.JSchException: java.net.ConnectException: Connection timed out (Connection timed out)
        at com.jcraft.jsch.Util.createSocket(Util.java:349) ~[com.jcraft.jsch-0.1.54.jar:na]
        at com.jcraft.jsch.Session.connect(Session.java:215) ~[com.jcraft.jsch-0.1.54.jar:na]
        at com.jcraft.jsch.Session.connect(Session.java:183) ~[com.jcraft.jsch-0.1.54.jar:na]
        at io.cdap.cdap.common.ssh.DefaultSSHSession.<init>(DefaultSSHSession.java:85) ~[na:na]

Solution(s)

This is likely a firewall issue which is preventing CDF from talking to the Dataproc instance where the pipeline is running. The issue can be fixed by following the instructions in go/cdf-gce-enforcer.

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