In our configuration on AWS I found that the connection to slaves was being terminated around 1 minute for the particular pipeline stage that was running. The stage was a long running git checkout that intermittently succeeded.

The solution for me was to increase the ELB idle timeout property on the load balancer in between the slave and master (http://docs.aws.amazon.com/elasticloadbalancing/latest/classic/config-idle-timeout.html). By default this property is set to 60 seconds, whereas the Jenkins default for 'hudson.remoting.Launcher.pingTimeoutSec' is 240.

During the 1 minute period where the slave was executing the long-running git checkout it must have been transferring less than 1 byte of data and therefore the ELB was dropping the TCP connection.

Unfortunately I have no capacity to work on Remoting in medium term, so I will unassign it and let others to take it. If somebody is interested to submit a pull request, I will be happy to help to get it reviewed and released.

I am aslo facing the same issue of agent went offline during build.

I am using jenkins v2.105 and jre 1.8

I am using Linux as master and IBM AIX and windows server 2K12 as slaves. we are executing nightly builds on slaves but sometimes due to agent goes offline that build won't get complete, so anybody has any workarround for this issue then please let me know.

Thanks in advance.

Hey I am having the same issue with Kubernetes plugin, where slaves try to connect to master with jnlp at particular port, we have even increased the ELB connection Timeout still facing the same issue where slaves go offline in between the builds and works fine when again rebuild the job, this is causing us huge impact for pipeline builds, our issue is very close to what rpallikonda has mentioned above, any solution for this, please let me know.
Thank you 
Slave Verion:

remoting-3.20.jar

Error:

hudson.remoting.RequestAbortedException: java.io.IOException: Unexpected EOF while receiving the data from the channel. FIFO buffer has been already closed.

Should I upgrade the remoting to latest version?

Hello everyone, I faced with same problem when slave goes offline during the build using SSH or JNLP agent.

TLDR:  Process hierarchy of Jenkins agent and build shell with same PGID, so kill(pid = 0,  signal = SIGTERM) will crash Jenkins agent too.

PID   PGID  SID   TPGID COMMAND
13691 13691 49864 13691 java -jar agent.jar
13818 13691 49864 13691  \_ /bin/sh -xe /tmp/jenkins4748921288996267614.sh
13820 13691 49864 13691    \_ kill(0, SIGTERM)

**I propose some agent demonization for except such bug  (call setsid() in thread pool?)

Description:

For our example we builds many project using make, so it build and abort build many times,GNU make has pid = 0 in internal structure, so when we click abort build on Jenkins it send SIGTERM to child processes -> make send SIGTERM to child and sometimes GNU make (fixed after ) calls `kill(0, SIGTERM)` which means on Linux agent that all the process group will be terminated included Jenkins agent -> so we get died agent during the build.