There are a number of Jenkins Reboots in this log. 

It seems to succeed and then continue to try to connect. 


Aug 08, 2014 11:51:51 AM hudson.remoting.Engine waitForServerToBack
INFO: Failed to connect to the master. Will retry again
java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at sun.net.NetworkClient.doConnect(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.<init>(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown
Source)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(Unknown Sou
rce)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Sour
ce)
at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
at hudson.remoting.Engine.waitForServerToBack(Engine.java:389)
at hudson.remoting.Engine.run(Engine.java:296)

Aug 08, 2014 11:52:02 AM hudson.remoting.Engine waitForServerToBack
INFO: Failed to connect to the master. Will retry again
java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at sun.net.NetworkClient.doConnect(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.<init>(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown
Source)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(Unknown Sou
rce)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Sour
ce)
at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
at hudson.remoting.Engine.waitForServerToBack(Engine.java:389)
at hudson.remoting.Engine.run(Engine.java:296)

Aug 08, 2014 11:52:13 AM hudson.remoting.Engine waitForServerToBack
INFO: Failed to connect to the master. Will retry again
java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at sun.net.NetworkClient.doConnect(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.<init>(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown
Source)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(Unknown Sou
rce)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Sour
ce)
at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
at hudson.remoting.Engine.waitForServerToBack(Engine.java:389)
at hudson.remoting.Engine.run(Engine.java:296)

Aug 08, 2014 11:52:24 AM hudson.remoting.Engine waitForServerToBack
INFO: Failed to connect to the master. Will retry again
java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at sun.net.NetworkClient.doConnect(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.<init>(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown
Source)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(Unknown Sou
rce)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Sour
ce)
at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
at hudson.remoting.Engine.waitForServerToBack(Engine.java:389)
at hudson.remoting.Engine.run(Engine.java:296)

Aug 08, 2014 11:52:35 AM hudson.remoting.Engine waitForServerToBack
INFO: Failed to connect to the master. Will retry again
java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at sun.net.NetworkClient.doConnect(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.<init>(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown
Source)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(Unknown Sou
rce)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Sour
ce)
at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
at hudson.remoting.Engine.waitForServerToBack(Engine.java:389)
at hudson.remoting.Engine.run(Engine.java:296)

Aug 08, 2014 11:52:46 AM hudson.remoting.Engine waitForServerToBack
INFO: Master isn't ready to talk to us. Will retry again: response code=503
Aug 08, 2014 11:52:59 AM hudson.remoting.Engine waitForServerToBack
INFO: Master isn't ready to talk to us. Will retry again: response code=503
Aug 08, 2014 11:53:09 AM hudson.remoting.jnlp.Main$CuiListener status
INFO: Locating server among http://product-ci.cisco.com:8080/
Aug 08, 2014 11:53:09 AM hudson.remoting.jnlp.Main$CuiListener status
INFO: Connecting to product-ci.cisco.com:62680
Aug 08, 2014 11:53:09 AM hudson.remoting.jnlp.Main$CuiListener status
INFO: Handshaking
Aug 08, 2014 11:53:09 AM hudson.remoting.jnlp.Main$CuiListener status
INFO: Connected
Aug 08, 2014 11:58:35 AM hudson.remoting.SynchronousCommandTransport$ReaderThrea
d run
SEVERE: I/O error in channel channel
java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(Unknown Source)
at java.net.SocketInputStream.read(Unknown Source)
at java.io.BufferedInputStream.fill(Unknown Source)
at java.io.BufferedInputStream.read(Unknown Source)
at hudson.remoting.FlightRecorderInputStream.read(FlightRecorderInputStr
eam.java:82)
at hudson.remoting.ChunkedInputStream.readHeader(ChunkedInputStream.java
:67)
at hudson.remoting.ChunkedInputStream.readUntilBreak(ChunkedInputStream.
java:93)
at hudson.remoting.ChunkedCommandTransport.readBlock(ChunkedCommandTrans
port.java:33)
at hudson.remoting.AbstractSynchronousByteArrayCommandTransport.read(Abs
tractSynchronousByteArrayCommandTransport.java:34)
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(Synchron
ousCommandTransport.java:48)

Aug 08, 2014 11:58:35 AM hudson.remoting.jnlp.Main$CuiListener status
INFO: Terminated
Aug 08, 2014 11:58:49 AM hudson.remoting.Engine waitForServerToBack
INFO: Master isn't ready to talk to us. Will retry again: response code=503
Aug 08, 2014 11:58:59 AM hudson.remoting.jnlp.Main$CuiListener status
INFO: Locating server among http://product-ci.cisco.com:8080/
Aug 08, 2014 11:58:59 AM hudson.remoting.jnlp.Main$CuiListener status
INFO: Connecting to product-ci.cisco.com:62827
Aug 08, 2014 11:58:59 AM hudson.remoting.jnlp.Main$CuiListener status
INFO: Handshaking
Aug 08, 2014 11:59:00 AM hudson.remoting.jnlp.Main$CuiListener status
INFO: Connected
Aug 08, 2014 12:09:01 PM hudson.remoting.SynchronousCommandTransport$ReaderThrea
d run
SEVERE: I/O error in channel channel
java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(Unknown Source)
at java.net.SocketInputStream.read(Unknown Source)
at java.io.BufferedInputStream.fill(Unknown Source)
at java.io.BufferedInputStream.read(Unknown Source)
at hudson.remoting.FlightRecorderInputStream.read(FlightRecorderInputStr
eam.java:82)
at hudson.remoting.ChunkedInputStream.readHeader(ChunkedInputStream.java
:67)
at hudson.remoting.ChunkedInputStream.readUntilBreak(ChunkedInputStream.
java:93)
at hudson.remoting.ChunkedCommandTransport.readBlock(ChunkedCommandTrans
port.java:33)
at hudson.remoting.AbstractSynchronousByteArrayCommandTransport.read(Abs
tractSynchronousByteArrayCommandTransport.java:34)
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(Synchron
ousCommandTransport.java:48)

Aug 08, 2014 12:09:01 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Terminated
Aug 08, 2014 12:09:11 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Locating server among http://product-ci.cisco.com:8080/
Aug 08, 2014 12:09:11 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Connecting to product-ci.cisco.com:49183
Aug 08, 2014 12:09:11 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Handshaking
Aug 08, 2014 12:09:11 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Connected
Aug 08, 2014 12:18:12 PM hudson.slaves.ChannelPinger$1 onDead
INFO: Ping failed. Terminating the channel.
java.util.concurrent.TimeoutException: Ping started on 1407496452799 hasn't comp
leted at 1407496692806
at hudson.remoting.PingThread.ping(PingThread.java:120)
at hudson.remoting.PingThread.run(PingThread.java:81)

Aug 08, 2014 12:18:12 PM hudson.remoting.SynchronousCommandTransport$ReaderThrea
d run
SEVERE: I/O error in channel channel
java.net.SocketException: Socket Closed
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(Unknown Source)
at java.net.SocketInputStream.read(Unknown Source)
at java.io.BufferedInputStream.fill(Unknown Source)
at java.io.BufferedInputStream.read(Unknown Source)
at hudson.remoting.FlightRecorderInputStream.read(FlightRecorderInputStr
eam.java:82)
at hudson.remoting.ChunkedInputStream.readHeader(ChunkedInputStream.java
:67)
at hudson.remoting.ChunkedInputStream.readUntilBreak(ChunkedInputStream.
java:93)
at hudson.remoting.ChunkedCommandTransport.readBlock(ChunkedCommandTrans
port.java:33)
at hudson.remoting.AbstractSynchronousByteArrayCommandTransport.read(Abs
tractSynchronousByteArrayCommandTransport.java:34)
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(Synchron
ousCommandTransport.java:48)

Aug 08, 2014 12:18:12 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Terminated
Aug 08, 2014 12:18:22 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Locating server among http://product-ci.cisco.com:8080/
Aug 08, 2014 12:18:22 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Connecting to product-ci.cisco.com:49183
Aug 08, 2014 12:18:22 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Handshaking
Aug 08, 2014 12:18:22 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Connected
Aug 08, 2014 12:48:22 PM hudson.remoting.SynchronousCommandTransport$ReaderThrea
d run
SEVERE: I/O error in channel channel
java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(Unknown Source)
at java.net.SocketInputStream.read(Unknown Source)
at java.io.BufferedInputStream.fill(Unknown Source)
at java.io.BufferedInputStream.read(Unknown Source)
at hudson.remoting.FlightRecorderInputStream.read(FlightRecorderInputStr
eam.java:82)
at hudson.remoting.ChunkedInputStream.readHeader(ChunkedInputStream.java
:67)
at hudson.remoting.ChunkedInputStream.readUntilBreak(ChunkedInputStream.
java:93)
at hudson.remoting.ChunkedCommandTransport.readBlock(ChunkedCommandTrans
port.java:33)
at hudson.remoting.AbstractSynchronousByteArrayCommandTransport.read(Abs
tractSynchronousByteArrayCommandTransport.java:34)
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(Synchron
ousCommandTransport.java:48)

Aug 08, 2014 12:48:22 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Terminated
Aug 08, 2014 12:48:33 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Locating server among http://product-ci.cisco.com:8080/
Aug 08, 2014 12:48:33 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Connecting to product-ci.cisco.com:49183
Aug 08, 2014 12:48:33 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Handshaking
Aug 08, 2014 12:48:33 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Connected1