[JIRA] (JENKINS-54897) Unexpected error in launching a agent after restart

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kosta@noima.com (JIRA)

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Nov 27, 2018, 4:43:02 PM11/27/18
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Konstantinos Psimoulis created an issue
 
Jenkins / Bug JENKINS-54897
Unexpected error in launching a agent after restart
Issue Type: Bug Bug
Assignee: Ivan Fernandez Calvo
Components: ssh-slaves-plugin
Created: 2018-11-27 21:42
Environment: Jenkins ver. 2.138.2
ssh-slaves-plugin ver: 1.28.1
Linux RHEL 7.5
Priority: Major Major
Reporter: Konstantinos Psimoulis

Launch agent has issues after restarting Jenkins. If you try to launch several times, it will eventually work.

 

ssh rules: no-port-forwarding,no-X11-forwarding,no-agent-forwarding,no-pty

 

Error log:

SSHLauncher{host='jenkins-slave.example.com', port=22, credentialsId='jenkins-master-ssh-key', jvmOptions='', javaPath='', prefixStartSlaveCmd='', suffixStartSlaveCmd='', launchTimeoutSeconds=210, maxNumRetries=10, retryWaitTime=15, sshHostKeyVerificationStrategy=hudson.plugins.sshslaves.verifiers.KnownHostsFileKeyVerificationStrategy, tcpNoDelay=true, trackCredentials=true}SSHLauncher{host='jenkins-slave.example.com', port=22, credentialsId='jenkins-master-ssh-key', jvmOptions='', javaPath='', prefixStartSlaveCmd='', suffixStartSlaveCmd='', launchTimeoutSeconds=210, maxNumRetries=10, retryWaitTime=15, sshHostKeyVerificationStrategy=hudson.plugins.sshslaves.verifiers.KnownHostsFileKeyVerificationStrategy, tcpNoDelay=true, trackCredentials=true}[11/27/18 16:18:08] [SSH] Opening SSH connection to jenkins-slave.example.com:22.[11/27/18 16:18:29] [SSH] SSH host key matches key in Known Hosts file. Connection will be allowed.[11/27/18 16:18:29] [SSH] SSH host key matches key in Known Hosts file. Connection will be allowed.[11/27/18 16:18:29] [SSH] Authentication successful.[11/27/18 16:18:29] [SSH] Authentication successful.[11/27/18 16:18:29] [SSH] The remote user's environment is:[11/27/18 16:18:29] [SSH] The remote user's environment is:BASH=/usr/bin/bashBASHOPTS=cmdhist:extquote:force_fignore:hostcomplete:interactive_comments:progcomp:promptvars:sourcepathBASH_ALIASES=()BASH_ARGC=()BASH_ARGV=()BASH_CMDS=()BASH_EXECUTION_STRING=setBASH_LINENO=()BASH_SOURCE=()BASH_VERSINFO=([0]="4" [1]="2" [2]="46" [3]="2" [4]="release" [5]="x86_64-redhat-linux-gnu")BASH_VERSION='4.2.46(2)-release'DIRSTACK=()EUID=1000GROUPS=()HOME=/var/lib/jenkins_slaveHOSTNAME=jenkins-slave.example.comHOSTTYPE=x86_64ID=1000IFS=$' \t\n'LANG=en_US.UTF-8LESSOPEN='||/usr/bin/lesspipe.sh %s'LOGNAME=jenkins_slave_localMACHTYPE=x86_64-redhat-linux-gnuMAIL=/var/mail/jenkins_slave_localOPTERR=1OPTIND=1OSTYPE=linux-gnuPATH=/usr/local/bin:/usr/binPIPESTATUS=([0]="0")PPID=15365PS4='+ 'PWD=/var/lib/jenkins_slaveSHELL=/bin/bashSHELLOPTS=braceexpand:hashall:interactive-commentsSHLVL=1SSH_CLIENT='165.115.33.181 36584 22'SSH_CONNECTION='165.115.33.181 36584 165.115.33.182 22'TERM=dumbTMOUT=1800UID=1000USER=jenkins_slave_localXDG_RUNTIME_DIR=/run/user/1000XDG_SESSION_ID=3293_=/etc/bashrc[11/27/18 16:18:29] [SSH] Checking java version of /app/var/lib/jenkins/slave_node/jdk/bin/javaBASH=/usr/bin/bashBASHOPTS=cmdhist:extquote:force_fignore:hostcomplete:interactive_comments:progcomp:promptvars:sourcepathBASH_ALIASES=()BASH_ARGC=()BASH_ARGV=()BASH_CMDS=()BASH_EXECUTION_STRING=setBASH_LINENO=()BASH_SOURCE=()BASH_VERSINFO=([0]="4" [1]="2" [2]="46" [3]="2" [4]="release" [5]="x86_64-redhat-linux-gnu")BASH_VERSION='4.2.46(2)-release'DIRSTACK=()EUID=1000GROUPS=()HOME=/var/lib/jenkins_slaveHOSTNAME=jenkins-slave.example.comHOSTTYPE=x86_64ID=1000IFS=$' \t\n'LANG=en_US.UTF-8LESSOPEN='||/usr/bin/lesspipe.sh %s'LOGNAME=jenkins_slave_localMACHTYPE=x86_64-redhat-linux-gnuMAIL=/var/mail/jenkins_slave_localOPTERR=1OPTIND=1OSTYPE=linux-gnuPATH=/usr/local/bin:/usr/binPIPESTATUS=([0]="0")PPID=15366PS4='+ 'PWD=/var/lib/jenkins_slaveSHELL=/bin/bashSHELLOPTS=braceexpand:hashall:interactive-commentsSHLVL=1SSH_CLIENT='165.115.33.181 36878 22'SSH_CONNECTION='165.115.33.181 36878 165.115.33.182 22'TERM=dumbTMOUT=1800UID=1000USER=jenkins_slave_localXDG_RUNTIME_DIR=/run/user/1000XDG_SESSION_ID=3292_=/etc/bashrc[11/27/18 16:18:29] [SSH] Checking java version of /app/var/lib/jenkins/slave_node/jdk/bin/javaCouldn't figure out the Java version of /app/var/lib/jenkins/slave_node/jdk/bin/javabash: /app/var/lib/jenkins/slave_node/jdk/bin/java: No such file or directory
[11/27/18 16:18:29] [SSH] Checking java version of javaCouldn't figure out the Java version of /app/var/lib/jenkins/slave_node/jdk/bin/javabash: /app/var/lib/jenkins/slave_node/jdk/bin/java: No such file or directory
[11/27/18 16:18:29] [SSH] Checking java version of java[11/27/18 16:18:29] [SSH] java -version returned 1.8.0_181.[11/27/18 16:18:29] [SSH] Starting sftp client.[11/27/18 16:18:29] [SSH] java -version returned 1.8.0_181.[11/27/18 16:18:29] [SSH] Starting sftp client.[11/27/18 16:18:29] [SSH] Copying latest remoting.jar...[11/27/18 16:18:29] [SSH] Copying latest remoting.jar...[11/27/18 16:18:29] [SSH] Copied 776,265 bytes.Expanded the channel window size to 4MB[11/27/18 16:18:29] [SSH] Starting agent process: cd "/app/var/lib/jenkins/slave_node" && java  -jar remoting.jar -workDir /app/var/lib/jenkins/slave_node[11/27/18 16:18:29] [SSH] Copied 776,265 bytes.Expanded the channel window size to 4MB[11/27/18 16:18:29] [SSH] Starting agent process: cd "/app/var/lib/jenkins/slave_node" && java  -jar remoting.jar -workDir /app/var/lib/jenkins/slave_nodeNov 27, 2018 4:18:30 PM org.jenkinsci.remoting.engine.WorkDirManager initializeWorkDirINFO: Using /app/var/lib/jenkins/slave_node/remoting as a remoting work directoryBoth error and output logs will be printed to /app/var/lib/jenkins/slave_node/remotingNov 27, 2018 4:18:30 PM org.jenkinsci.remoting.engine.WorkDirManager initializeWorkDirINFO: Using /app/var/lib/jenkins/slave_node/remoting as a remoting work directoryBoth error and output logs will be printed to /app/var/lib/jenkins/slave_node/remoting<===[JENKINS REMOTING CAPACITY]===>channel started<===[JENKINS REMOTING CAPACITY]===>channel startedRemoting version: 3.25Remoting version: 3.25This is a Unix agentThis is a Unix agentEvacuated stdoutEvacuated stdoutERROR: Unexpected error in launching a agent. This is probably a bug in Jenkins.java.lang.IllegalStateException: Already connected at hudson.slaves.SlaveComputer.setChannel(SlaveComputer.java:678) at hudson.slaves.SlaveComputer.setChannel(SlaveComputer.java:432) at hudson.plugins.sshslaves.SSHLauncher.startAgent(SSHLauncher.java:1032) at hudson.plugins.sshslaves.SSHLauncher.access$500(SSHLauncher.java:128) at hudson.plugins.sshslaves.SSHLauncher$2.call(SSHLauncher.java:866) at hudson.plugins.sshslaves.SSHLauncher$2.call(SSHLauncher.java:831) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748)[11/27/18 16:18:33] Launch failed - cleaning up connection[11/27/18 16:18:33] [SSH] Connection closed.Connection terminatedchannel stoppedConnection terminatedERROR: Unexpected error in launching a agent. This is probably a bug in Jenkins.java.lang.NullPointerException at org.jenkinsci.modules.systemd_slave_installer.SlaveInstallerFactoryImpl.createIfApplicable(SlaveInstallerFactoryImpl.java:33) at org.jenkinsci.modules.slave_installer.SlaveInstallerFactory.createIfApplicable(SlaveInstallerFactory.java:29) at org.jenkinsci.modules.slave_installer.SlaveInstallerFactory.createFor(SlaveInstallerFactory.java:46) at org.jenkinsci.modules.slave_installer.impl.ComputerListenerImpl.onOnline(ComputerListenerImpl.java:30) at hudson.slaves.SlaveComputer.setChannel(SlaveComputer.java:693) at hudson.slaves.SlaveComputer.setChannel(SlaveComputer.java:432) at hudson.plugins.sshslaves.SSHLauncher.startAgent(SSHLauncher.java:1032) at hudson.plugins.sshslaves.SSHLauncher.access$500(SSHLauncher.java:128) at hudson.plugins.sshslaves.SSHLauncher$2.call(SSHLauncher.java:866) at hudson.plugins.sshslaves.SSHLauncher$2.call(SSHLauncher.java:831) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748)[11/27/18 16:18:33] Launch failed - cleaning up connection[11/27/18 16:18:33] [SSH] Connection closed.SSHLauncher{host='jenkins-slave.example.com', port=22, credentialsId='jenkins-master-ssh-key', jvmOptions='', javaPath='', prefixStartSlaveCmd='', suffixStartSlaveCmd='', launchTimeoutSeconds=210, maxNumRetries=10, retryWaitTime=15, sshHostKeyVerificationStrategy=hudson.plugins.sshslaves.verifiers.KnownHostsFileKeyVerificationStrategy, tcpNoDelay=true, trackCredentials=true}[11/27/18 16:19:03] [SSH] Opening SSH connection to jenkins-slave.example.com:22.[11/27/18 16:19:03] [SSH] SSH host key matches key in Known Hosts file. Connection will be allowed.[11/27/18 16:19:03] [SSH] Authentication successful.[11/27/18 16:19:03] [SSH] The remote user's environment is:BASH=/usr/bin/bashBASHOPTS=cmdhist:extquote:force_fignore:hostcomplete:interactive_comments:progcomp:promptvars:sourcepathBASH_ALIASES=()BASH_ARGC=()BASH_ARGV=()BASH_CMDS=()BASH_EXECUTION_STRING=setBASH_LINENO=()BASH_SOURCE=()BASH_VERSINFO=([0]="4" [1]="2" [2]="46" [3]="2" [4]="release" [5]="x86_64-redhat-linux-gnu")BASH_VERSION='4.2.46(2)-release'DIRSTACK=()EUID=1000GROUPS=()HOME=/var/lib/jenkins_slaveHOSTNAME=jenkins-slave.example.comHOSTTYPE=x86_64ID=1000IFS=$' \t\n'LANG=en_US.UTF-8LESSOPEN='||/usr/bin/lesspipe.sh %s'LOGNAME=jenkins_slave_localMACHTYPE=x86_64-redhat-linux-gnuMAIL=/var/mail/jenkins_slave_localOPTERR=1OPTIND=1OSTYPE=linux-gnuPATH=/usr/local/bin:/usr/binPIPESTATUS=([0]="0")PPID=15645PS4='+ 'PWD=/var/lib/jenkins_slaveSHELL=/bin/bashSHELLOPTS=braceexpand:hashall:interactive-commentsSHLVL=1SSH_CLIENT='165.115.33.181 37012 22'SSH_CONNECTION='165.115.33.181 37012 165.115.33.182 22'TERM=dumbTMOUT=1800UID=1000USER=jenkins_slave_localXDG_RUNTIME_DIR=/run/user/1000XDG_SESSION_ID=3294_=/etc/bashrc[11/27/18 16:19:03] [SSH] Checking java version of /app/var/lib/jenkins/slave_node/jdk/bin/javaCouldn't figure out the Java version of /app/var/lib/jenkins/slave_node/jdk/bin/javabash: /app/var/lib/jenkins/slave_node/jdk/bin/java: No such file or directory
[11/27/18 16:19:03] [SSH] Checking java version of java[11/27/18 16:19:03] [SSH] java -version returned 1.8.0_181.[11/27/18 16:19:03] [SSH] Starting sftp client.[11/27/18 16:19:03] [SSH] Copying latest remoting.jar...[11/27/18 16:19:03] [SSH] Copied 776,265 bytes.Expanded the channel window size to 4MB[11/27/18 16:19:03] [SSH] Starting agent process: cd "/app/var/lib/jenkins/slave_node" && java  -jar remoting.jar -workDir /app/var/lib/jenkins/slave_nodeNov 27, 2018 4:19:03 PM org.jenkinsci.remoting.engine.WorkDirManager initializeWorkDirINFO: Using /app/var/lib/jenkins/slave_node/remoting as a remoting work directoryBoth error and output logs will be printed to /app/var/lib/jenkins/slave_node/remoting<===[JENKINS REMOTING CAPACITY]===>channel startedRemoting version: 3.25This is a Unix agentEvacuated stdoutAgent successfully connected and online
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kosta@noima.com (JIRA)

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Nov 27, 2018, 4:44:04 PM11/27/18
to jenkinsc...@googlegroups.com
Konstantinos Psimoulis updated an issue
Launch agent has issues after restarting Jenkins. If you try to launch several times, it will eventually work.

 

ssh rules: no-port-forwarding,no-X11-forwarding,no-agent-forwarding,no-pty

 

Error log:
{noformat}

SSHLauncher{host='jenkins-slave.example.com', port=22, credentialsId='jenkins-master-ssh-key', jvmOptions='', javaPath='', prefixStartSlaveCmd='', suffixStartSlaveCmd='', launchTimeoutSeconds=210, maxNumRetries=10, retryWaitTime=15, sshHostKeyVerificationStrategy=hudson.plugins.sshslaves.verifiers.KnownHostsFileKeyVerificationStrategy, tcpNoDelay=true, trackCredentials=true}
SSHLauncher{host='jenkins-slave.example.com', port=22, credentialsId='jenkins-master-ssh-key', jvmOptions='', javaPath='', prefixStartSlaveCmd='', suffixStartSlaveCmd='', launchTimeoutSeconds=210, maxNumRetries=10, retryWaitTime=15, sshHostKeyVerificationStrategy=hudson.plugins.sshslaves.verifiers.KnownHostsFileKeyVerificationStrategy, tcpNoDelay=true, trackCredentials=true}
[11/27/18 16:18:08] [SSH] Opening SSH connection to jenkins-slave.example.com:22.
[11/27/18 16:18:29] [SSH] SSH host key matches key in Known Hosts file. Connection will be allowed.
[11/27/18 16:18:29] [SSH] SSH host key matches key in Known Hosts file. Connection will be allowed.
[11/27/18 16:18:29] [SSH] Authentication successful.
[11/27/18 16:18:29] [SSH] Authentication successful.
[11/27/18 16:18:29] [SSH] The remote user's environment is:
[11/27/18 16:18:29] [SSH] The remote user's environment is:
BASH=/usr/bin/ bashBASHOPTS bash
BASHOPTS =cmdhist:extquote:force_fignore:hostcomplete:interactive_comments:progcomp:promptvars: sourcepathBASH_ALIASES sourcepath
BASH_ALIASES =()
BASH_ARGC=()
BASH_ARGV=()
BASH_CMDS=()
BASH_EXECUTION_STRING= setBASH_LINENO set
BASH_LINENO =()
BASH_SOURCE=()
BASH_VERSINFO=([0]="4" [1]="2" [2]="46" [3]="2" [4]="release" [5]="x86_64-redhat-linux-gnu")
BASH_VERSION='4.2.46(2)-release'
DIRSTACK=()
EUID= 1000GROUPS 1000
GROUPS =()
HOME=/var/lib/ jenkins_slaveHOSTNAME jenkins_slave
HOSTNAME =jenkins-slave.example. comHOSTTYPE com
HOSTTYPE = x86_64ID x86_64
ID = 1000IFS 1000
IFS =$' \t\n'
LANG=en_US.UTF- 8LESSOPEN 8
LESSOPEN ='||/usr/bin/lesspipe.sh %s'
LOGNAME= jenkins_slave_localMACHTYPE jenkins_slave_local
MACHTYPE =x86_64-redhat-linux- gnuMAIL gnu
MAIL =/var/mail/ jenkins_slave_localOPTERR jenkins_slave_local
OPTERR = 1OPTIND 1
OPTIND = 1OSTYPE 1
OSTYPE =linux- gnuPATH gnu
PATH =/usr/local/bin:/usr/ binPIPESTATUS bin
PIPESTATUS =([0]="0")
PPID= 15365PS4 15365
PS4 ='+ '
PWD=/var/lib/ jenkins_slaveSHELL jenkins_slave
SHELL =/bin/ bashSHELLOPTS bash
SHELLOPTS =braceexpand:hashall:interactive- commentsSHLVL comments
SHLVL = 1SSH_CLIENT 1
SSH_CLIENT ='165.115.33.181 36584 22'
SSH_CONNECTION='165.115.33.181 36584 165.115.33.182 22'
TERM= dumbTMOUT dumb
TMOUT = 1800UID 1800
UID = 1000USER 1000
USER = jenkins_slave_localXDG_RUNTIME_DIR jenkins_slave_local
XDG_RUNTIME_DIR =/run/user/ 1000XDG_SESSION_ID 1000
XDG_SESSION_ID = 3293_ 3293
_ =/etc/bashrc
[11/27/18 16:18:29] [SSH] Checking java version of /app/var/lib/jenkins/slave_node/jdk/bin/ javaBASH java
BASH =/usr/bin/ bashBASHOPTS bash
BASHOPTS =cmdhist:extquote:force_fignore:hostcomplete:interactive_comments:progcomp:promptvars: sourcepathBASH_ALIASES sourcepath
BASH_ALIASES =()
BASH_ARGC=()
BASH_ARGV=()
BASH_CMDS=()
BASH_EXECUTION_STRING= setBASH_LINENO set
BASH_LINENO =()
BASH_SOURCE=()
BASH_VERSINFO=([0]="4" [1]="2" [2]="46" [3]="2" [4]="release" [5]="x86_64-redhat-linux-gnu")
BASH_VERSION='4.2.46(2)-release'
DIRSTACK=()
EUID= 1000GROUPS 1000
GROUPS =()
HOME=/var/lib/ jenkins_slaveHOSTNAME jenkins_slave
HOSTNAME =jenkins-slave.example. comHOSTTYPE com
HOSTTYPE = x86_64ID x86_64
ID = 1000IFS 1000
IFS =$' \t\n'
LANG=en_US.UTF- 8LESSOPEN 8
LESSOPEN ='||/usr/bin/lesspipe.sh %s'
LOGNAME= jenkins_slave_localMACHTYPE jenkins_slave_local
MACHTYPE =x86_64-redhat-linux- gnuMAIL gnu
MAIL =/var/mail/ jenkins_slave_localOPTERR jenkins_slave_local
OPTERR = 1OPTIND 1
OPTIND = 1OSTYPE 1
OSTYPE =linux- gnuPATH gnu
PATH =/usr/local/bin:/usr/ binPIPESTATUS bin
PIPESTATUS =([0]="0")
PPID= 15366PS4 15366
PS4 ='+ '
PWD=/var/lib/ jenkins_slaveSHELL jenkins_slave
SHELL =/bin/ bashSHELLOPTS bash
SHELLOPTS =braceexpand:hashall:interactive- commentsSHLVL comments
SHLVL = 1SSH_CLIENT 1
SSH_CLIENT ='165.115.33.181 36878 22'
SSH_CONNECTION='165.115.33.181 36878 165.115.33.182 22'
TERM= dumbTMOUT dumb
TMOUT = 1800UID 1800
UID = 1000USER 1000
USER = jenkins_slave_localXDG_RUNTIME_DIR jenkins_slave_local
XDG_RUNTIME_DIR =/run/user/ 1000XDG_SESSION_ID 1000
XDG_SESSION_ID = 3292_ 3292
_ =/etc/bashrc
[11/27/18 16:18:29] [SSH] Checking java version of /app/var/lib/jenkins/slave_node/jdk/bin/ javaCouldn java
Couldn 't figure out the Java version of /app/var/lib/jenkins/slave_node/jdk/bin/ javabash java
bash : /app/var/lib/jenkins/slave_node/jdk/bin/java: No such file or directory
[11/27/18 16:18:29] [SSH] Checking java version of javaCouldn java
Couldn 't figure out the Java version of /app/var/lib/jenkins/slave_node/jdk/bin/ javabash java
bash : /app/var/lib/jenkins/slave_node/jdk/bin/java: No such file or directory
[11/27/18 16:18:29] [SSH] Checking java version of java
[11/27/18 16:18:29] [SSH] java -version returned 1.8.0_181.
[11/27/18 16:18:29] [SSH] Starting sftp client.
[11/27/18 16:18:29] [SSH] java -version returned 1.8.0_181.
[11/27/18 16:18:29] [SSH] Starting sftp client.
[11/27/18 16:18:29] [SSH] Copying latest remoting.jar...
[11/27/18 16:18:29] [SSH] Copying latest remoting.jar...
[11/27/18 16:18:29] [SSH] Copied 776,265 bytes.
Expanded the channel window size to 4MB
[11/27/18 16:18:29] [SSH] Starting agent process: cd "/app/var/lib/jenkins/slave_node" && java   -jar remoting.jar -workDir /app/var/lib/jenkins/slave_node
[11/27/18 16:18:29] [SSH] Copied 776,265 bytes.
Expanded the channel window size to 4MB
[11/27/18 16:18:29] [SSH] Starting agent process: cd "/app/var/lib/jenkins/slave_node" && java   -jar remoting.jar -workDir /app/var/lib/jenkins/ slave_nodeNov slave_node
Nov 27, 2018 4:18:30 PM org.jenkinsci.remoting.engine.WorkDirManager initializeWorkDirINFO initializeWorkDir
INFO : Using /app/var/lib/jenkins/slave_node/remoting as a remoting work directoryBoth directory
Both error and output logs will be printed to /app/var/lib/jenkins/slave_node/ remotingNov remoting
Nov 27, 2018 4:18:30 PM org.jenkinsci.remoting.engine.WorkDirManager initializeWorkDirINFO initializeWorkDir
INFO : Using /app/var/lib/jenkins/slave_node/remoting as a remoting work directoryBoth directory
Both error and output logs will be printed to /app/var/lib/jenkins/slave_node/remoting
<===[JENKINS REMOTING CAPACITY]===>channel started
<===[JENKINS REMOTING CAPACITY]===>channel startedRemoting started
Remoting version: 3. 25Remoting 25
Remoting version: 3. 25This 25
This is a Unix agentThis agent
This is a Unix agentEvacuated stdoutEvacuated stdoutERROR agent
Evacuated stdout
Evacuated stdout
ERROR : Unexpected error in launching a agent. This is probably a bug in Jenkins.
java.lang.IllegalStateException: Already connected
at hudson.slaves.SlaveComputer.setChannel(SlaveComputer.java:678)
at hudson.slaves.SlaveComputer.setChannel(SlaveComputer.java:432)
at hudson.plugins.sshslaves.SSHLauncher.startAgent(SSHLauncher.java:1032)
at hudson.plugins.sshslaves.SSHLauncher.access$500(SSHLauncher.java:128)
at hudson.plugins.sshslaves.SSHLauncher$2.call(SSHLauncher.java:866)
at hudson.plugins.sshslaves.SSHLauncher$2.call(SSHLauncher.java:831)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
[11/27/18 16:18:33] Launch failed - cleaning up connection
[11/27/18 16:18:33] [SSH] Connection closed.
Connection terminatedchannel stoppedConnection terminatedERROR terminated
channel stopped
Connection terminated
ERROR : Unexpected error in launching a agent. This is probably a bug in Jenkins.
java.lang.NullPointerException
at org.jenkinsci.modules.systemd_slave_installer.SlaveInstallerFactoryImpl.createIfApplicable(SlaveInstallerFactoryImpl.java:33)
at org.jenkinsci.modules.slave_installer.SlaveInstallerFactory.createIfApplicable(SlaveInstallerFactory.java:29)
at org.jenkinsci.modules.slave_installer.SlaveInstallerFactory.createFor(SlaveInstallerFactory.java:46)
at org.jenkinsci.modules.slave_installer.impl.ComputerListenerImpl.onOnline(ComputerListenerImpl.java:30)
at hudson.slaves.SlaveComputer.setChannel(SlaveComputer.java:693)
at hudson.slaves.SlaveComputer.setChannel(SlaveComputer.java:432)
at hudson.plugins.sshslaves.SSHLauncher.startAgent(SSHLauncher.java:1032)
at hudson.plugins.sshslaves.SSHLauncher.access$500(SSHLauncher.java:128)
at hudson.plugins.sshslaves.SSHLauncher$2.call(SSHLauncher.java:866)
at hudson.plugins.sshslaves.SSHLauncher$2.call(SSHLauncher.java:831)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
[11/27/18 16:18:33] Launch failed - cleaning up connection
[11/27/18 16:18:33] [SSH] Connection closed.
SSHLauncher{host='jenkins-slave.example.com', port=22, credentialsId='jenkins-master-ssh-key', jvmOptions='', javaPath='', prefixStartSlaveCmd='', suffixStartSlaveCmd='', launchTimeoutSeconds=210, maxNumRetries=10, retryWaitTime=15, sshHostKeyVerificationStrategy=hudson.plugins.sshslaves.verifiers.KnownHostsFileKeyVerificationStrategy, tcpNoDelay=true, trackCredentials=true}
[11/27/18 16:19:03] [SSH] Opening SSH connection to jenkins-slave.example.com:22.
[11/27/18 16:19:03] [SSH] SSH host key matches key in Known Hosts file. Connection will be allowed.
[11/27/18 16:19:03] [SSH] Authentication successful.
[11/27/18 16:19:03] [SSH] The remote user's environment is:
BASH=/usr/bin/ bashBASHOPTS bash
BASHOPTS =cmdhist:extquote:force_fignore:hostcomplete:interactive_comments:progcomp:promptvars: sourcepathBASH_ALIASES sourcepath
BASH_ALIASES =()
BASH_ARGC=()
BASH_ARGV=()
BASH_CMDS=()
BASH_EXECUTION_STRING= setBASH_LINENO set
BASH_LINENO =()
BASH_SOURCE=()
BASH_VERSINFO=([0]="4" [1]="2" [2]="46" [3]="2" [4]="release" [5]="x86_64-redhat-linux-gnu")
BASH_VERSION='4.2.46(2)-release'
DIRSTACK=()
EUID= 1000GROUPS 1000
GROUPS =()
HOME=/var/lib/ jenkins_slaveHOSTNAME jenkins_slave
HOSTNAME =jenkins-slave.example. comHOSTTYPE com
HOSTTYPE = x86_64ID x86_64
ID = 1000IFS 1000
IFS =$' \t\n'
LANG=en_US.UTF- 8LESSOPEN 8
LESSOPEN ='||/usr/bin/lesspipe.sh %s'
LOGNAME= jenkins_slave_localMACHTYPE jenkins_slave_local
MACHTYPE =x86_64-redhat-linux- gnuMAIL gnu
MAIL =/var/mail/ jenkins_slave_localOPTERR jenkins_slave_local
OPTERR = 1OPTIND 1
OPTIND = 1OSTYPE 1
OSTYPE =linux- gnuPATH gnu
PATH =/usr/local/bin:/usr/ binPIPESTATUS bin
PIPESTATUS =([0]="0")
PPID= 15645PS4 15645
PS4 ='+ '
PWD=/var/lib/ jenkins_slaveSHELL jenkins_slave
SHELL =/bin/ bashSHELLOPTS bash
SHELLOPTS =braceexpand:hashall:interactive- commentsSHLVL comments
SHLVL = 1SSH_CLIENT 1
SSH_CLIENT ='165.115.33.181 37012 22'
SSH_CONNECTION='165.115.33.181 37012 165.115.33.182 22'
TERM= dumbTMOUT dumb
TMOUT = 1800UID 1800
UID = 1000USER 1000
USER = jenkins_slave_localXDG_RUNTIME_DIR jenkins_slave_local
XDG_RUNTIME_DIR =/run/user/ 1000XDG_SESSION_ID 1000
XDG_SESSION_ID = 3294_ 3294
_ =/etc/bashrc
[11/27/18 16:19:03] [SSH] Checking java version of /app/var/lib/jenkins/slave_node/jdk/bin/ javaCouldn java
Couldn 't figure out the Java version of /app/var/lib/jenkins/slave_node/jdk/bin/ javabash java
bash : /app/var/lib/jenkins/slave_node/jdk/bin/java: No such file or directory
[11/27/18 16:19:03] [SSH] Checking java version of java
[11/27/18 16:19:03] [SSH] java -version returned 1.8.0_181.
[11/27/18 16:19:03] [SSH] Starting sftp client.
[11/27/18 16:19:03] [SSH] Copying latest remoting.jar...
[11/27/18 16:19:03] [SSH] Copied 776,265 bytes.
Expanded the channel window size to 4MB
[11/27/18 16:19:03] [SSH] Starting agent process: cd "/app/var/lib/jenkins/slave_node" && java   -jar remoting.jar -workDir /app/var/lib/jenkins/ slave_nodeNov slave_node
Nov 27, 2018 4:19:03 PM org.jenkinsci.remoting.engine.WorkDirManager initializeWorkDirINFO initializeWorkDir
INFO : Using /app/var/lib/jenkins/slave_node/remoting as a remoting work directoryBoth directory
Both error and output logs will be printed to /app/var/lib/jenkins/slave_node/remoting
<===[JENKINS REMOTING CAPACITY]===>channel startedRemoting started
Remoting version: 3. 25This 25
This is a Unix agentEvacuated stdoutAgent agent
Evacuated stdout
Agent successfully connected and online{noformat}

kosta@noima.com (JIRA)

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Nov 27, 2018, 4:49:03 PM11/27/18
to jenkinsc...@googlegroups.com
Konstantinos Psimoulis updated an issue
Launch agent has issues after restarting Jenkins. If you try to launch several times, it will eventually work.

 

ssh rules: no-port-forwarding,no-X11-forwarding,no-agent-forwarding,no-pty

 
Node config.xml
{code:java}
<?xml version='1.1' encoding='UTF-8'?>
<slave>
  <name>cac-slave-01</name>
  <description></description>
  <remoteFS>/app/var/lib/jenkins/slave_node</remoteFS>
  <numExecutors>5</numExecutors>
  <mode>NORMAL</mode>
  <retentionStrategy class="hudson.slaves.RetentionStrategy$Always"/>
  <launcher class="hudson.plugins.sshslaves.SSHLauncher" plugin="ssh-s...@1.28.1">
    <host>jenkins-slave.example.com</host>
    <port>22</port>
    <credentialsId>jenkins-master-ssh-key</credentialsId>
    <launchTimeoutSeconds>210</launchTimeoutSeconds>
    <maxNumRetries>10</maxNumRetries>
    <retryWaitTime>15</retryWaitTime>
    <sshHostKeyVerificationStrategy class="hudson.plugins.sshslaves.verifiers.KnownHostsFileKeyVerificationStrategy"/>
  </launcher>
  <label></label>
  <nodeProperties/>
</slave>{code}
 
Error log:
{noformat}
SSHLauncher{host='jenkins-slave.example.com', port=22, credentialsId='jenkins-master-ssh-key', jvmOptions='', javaPath='', prefixStartSlaveCmd='', suffixStartSlaveCmd='', launchTimeoutSeconds=210, maxNumRetries=10, retryWaitTime=15, sshHostKeyVerificationStrategy=hudson.plugins.sshslaves.verifiers.KnownHostsFileKeyVerificationStrategy, tcpNoDelay=true, trackCredentials=true}
[11/27/18 16:18:08] [SSH] Opening SSH connection to jenkins-slave.example.com:22.
[11/27/18 16:18:29] [SSH] SSH host key matches key in Known Hosts file. Connection will be allowed.
[11/27/18 16:18:29] [SSH] SSH host key matches key in Known Hosts file. Connection will be allowed.
[11/27/18 16:18:29] [SSH] Authentication successful.
[11/27/18 16:18:29] [SSH] Authentication successful.
[11/27/18 16:18:29] [SSH] The remote user's environment is:
[11/27/18 16:18:29] [SSH] The remote user's environment is:
BASH=/usr/bin/bash
BASHOPTS=cmdhist:extquote:force_fignore:hostcomplete:interactive_comments:progcomp:promptvars:sourcepath
BASH_ALIASES=()
BASH_ARGC=()
BASH_ARGV=()
BASH_CMDS=()
BASH_EXECUTION_STRING=set
BASH_LINENO=()

BASH_SOURCE=()
BASH_VERSINFO=([0]="4" [1]="2" [2]="46" [3]="2" [4]="release" [5]="x86_64-redhat-linux-gnu")
BASH_VERSION='4.2.46(2)-release'
DIRSTACK=()
EUID=1000
GROUPS=()
HOME=/var/lib/jenkins_slave
HOSTNAME=jenkins-slave.example.com
HOSTTYPE=x86_64
ID=1000
IFS=$' \t\n'
LANG=en_US.UTF-8
LESSOPEN='||/usr/bin/lesspipe.sh %s'
LOGNAME=jenkins_slave_local
MACHTYPE=x86_64-redhat-linux-gnu
MAIL=/var/mail/jenkins_slave_local
OPTERR=1
OPTIND=1
OSTYPE=linux-gnu
PATH=/usr/local/bin:/usr/bin
PIPESTATUS=([0]="0")
PPID=15365
PS4='+ '
PWD=/var/lib/jenkins_slave
SHELL=/bin/bash
SHELLOPTS=braceexpand:hashall:interactive-comments
SHLVL=1
SSH_CLIENT='165.115.33.181 36584 22'

SSH_CONNECTION='165.115.33.181 36584 165.115.33.182 22'
TERM=dumb
TMOUT=1800
UID=1000
USER=jenkins_slave_local
XDG_RUNTIME_DIR=/run/user/1000
XDG_SESSION_ID=3293
_=/etc/bashrc

[11/27/18 16:18:29] [SSH] Checking java version of /app/var/lib/jenkins/slave_node/jdk/bin/java
BASH=/usr/bin/bash
BASHOPTS=cmdhist:extquote:force_fignore:hostcomplete:interactive_comments:progcomp:promptvars:sourcepath
BASH_ALIASES=()
BASH_ARGC=()
BASH_ARGV=()
BASH_CMDS=()
BASH_EXECUTION_STRING=set
BASH_LINENO=()

BASH_SOURCE=()
BASH_VERSINFO=([0]="4" [1]="2" [2]="46" [3]="2" [4]="release" [5]="x86_64-redhat-linux-gnu")
BASH_VERSION='4.2.46(2)-release'
DIRSTACK=()
EUID=1000
GROUPS=()
HOME=/var/lib/jenkins_slave
HOSTNAME=jenkins-slave.example.com
HOSTTYPE=x86_64
ID=1000
IFS=$' \t\n'
LANG=en_US.UTF-8
LESSOPEN='||/usr/bin/lesspipe.sh %s'
LOGNAME=jenkins_slave_local
MACHTYPE=x86_64-redhat-linux-gnu
MAIL=/var/mail/jenkins_slave_local
OPTERR=1
OPTIND=1
OSTYPE=linux-gnu
PATH=/usr/local/bin:/usr/bin
PIPESTATUS=([0]="0")
PPID=15366
PS4='+ '
PWD=/var/lib/jenkins_slave
SHELL=/bin/bash
SHELLOPTS=braceexpand:hashall:interactive-comments
SHLVL=1
SSH_CLIENT='165.115.33.181 36878 22'

SSH_CONNECTION='165.115.33.181 36878 165.115.33.182 22'
TERM=dumb
TMOUT=1800
UID=1000
USER=jenkins_slave_local
XDG_RUNTIME_DIR=/run/user/1000
XDG_SESSION_ID=3292
_=/etc/bashrc

[11/27/18 16:18:29] [SSH] Checking java version of /app/var/lib/jenkins/slave_node/jdk/bin/java
Couldn't figure out the Java version of /app/var/lib/jenkins/slave_node/jdk/bin/java
bash: /app/var/lib/jenkins/slave_node/jdk/bin/java: No such file or directory[11/27/18 16:18:29] [SSH] Checking java version of java
Couldn't figure out the Java version of /app/var/lib/jenkins/slave_node/jdk/bin/java
bash: /app/var/lib/jenkins/slave_node/jdk/bin/java: No such file or directory[11/27/18 16:18:29] [SSH] Checking java version of java
[11/27/18 16:18:29] [SSH] java -version returned 1.8.0_181.
[11/27/18 16:18:29] [SSH] Starting sftp client.
[11/27/18 16:18:29] [SSH] java -version returned 1.8.0_181.
[11/27/18 16:18:29] [SSH] Starting sftp client.
[11/27/18 16:18:29] [SSH] Copying latest remoting.jar...
[11/27/18 16:18:29] [SSH] Copying latest remoting.jar...
[11/27/18 16:18:29] [SSH] Copied 776,265 bytes.
Expanded the channel window size to 4MB
[11/27/18 16:18:29] [SSH] Starting agent process: cd "/app/var/lib/jenkins/slave_node" && java  -jar remoting.jar -workDir /app/var/lib/jenkins/slave_node
[11/27/18 16:18:29] [SSH] Copied 776,265 bytes.
Expanded the channel window size to 4MB
[11/27/18 16:18:29] [SSH] Starting agent process: cd "/app/var/lib/jenkins/slave_node" && java  -jar remoting.jar -workDir /app/var/lib/jenkins/slave_node
Nov 27, 2018 4:18:30 PM org.jenkinsci.remoting.engine.WorkDirManager initializeWorkDir
INFO: Using /app/var/lib/jenkins/slave_node/remoting as a remoting work directory

Both error and output logs will be printed to /app/var/lib/jenkins/slave_node/remoting
Nov 27, 2018 4:18:30 PM org.jenkinsci.remoting.engine.WorkDirManager initializeWorkDir
INFO: Using /app/var/lib/jenkins/slave_node/remoting as a remoting work directory

Both error and output logs will be printed to /app/var/lib/jenkins/slave_node/remoting
<===[JENKINS REMOTING CAPACITY]===>channel started
<===[JENKINS REMOTING CAPACITY]===>channel started
Remoting version: 3.25
Remoting version: 3.25
This is a Unix agent
This is a Unix agent

Evacuated stdout
Evacuated stdout
ERROR: Unexpected error in launching a agent. This is probably a bug in Jenkins.
java.lang.IllegalStateException: Already connected
at hudson.slaves.SlaveComputer.setChannel(SlaveComputer.java:678)
at hudson.slaves.SlaveComputer.setChannel(SlaveComputer.java:432)
at hudson.plugins.sshslaves.SSHLauncher.startAgent(SSHLauncher.java:1032)
at hudson.plugins.sshslaves.SSHLauncher.access$500(SSHLauncher.java:128)
at hudson.plugins.sshslaves.SSHLauncher$2.call(SSHLauncher.java:866)
at hudson.plugins.sshslaves.SSHLauncher$2.call(SSHLauncher.java:831)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
[11/27/18 16:18:33] Launch failed - cleaning up connection
[11/27/18 16:18:33] [SSH] Connection closed.
Connection terminated
BASHOPTS=cmdhist:extquote:force_fignore:hostcomplete:interactive_comments:progcomp:promptvars:sourcepath
BASH_ALIASES=()
BASH_ARGC=()
BASH_ARGV=()
BASH_CMDS=()
BASH_EXECUTION_STRING=set
BASH_LINENO=()

BASH_SOURCE=()
BASH_VERSINFO=([0]="4" [1]="2" [2]="46" [3]="2" [4]="release" [5]="x86_64-redhat-linux-gnu")
BASH_VERSION='4.2.46(2)-release'
DIRSTACK=()
EUID=1000
GROUPS=()
HOME=/var/lib/jenkins_slave
HOSTNAME=jenkins-slave.example.com
HOSTTYPE=x86_64
ID=1000
IFS=$' \t\n'
LANG=en_US.UTF-8
LESSOPEN='||/usr/bin/lesspipe.sh %s'
LOGNAME=jenkins_slave_local
MACHTYPE=x86_64-redhat-linux-gnu
MAIL=/var/mail/jenkins_slave_local
OPTERR=1
OPTIND=1
OSTYPE=linux-gnu
PATH=/usr/local/bin:/usr/bin
PIPESTATUS=([0]="0")
PPID=15645
PS4='+ '
PWD=/var/lib/jenkins_slave
SHELL=/bin/bash
SHELLOPTS=braceexpand:hashall:interactive-comments
SHLVL=1
SSH_CLIENT='165.115.33.181 37012 22'

SSH_CONNECTION='165.115.33.181 37012 165.115.33.182 22'
TERM=dumb
TMOUT=1800
UID=1000
USER=jenkins_slave_local
XDG_RUNTIME_DIR=/run/user/1000
XDG_SESSION_ID=3294
_=/etc/bashrc

[11/27/18 16:19:03] [SSH] Checking java version of /app/var/lib/jenkins/slave_node/jdk/bin/java
Couldn't figure out the Java version of /app/var/lib/jenkins/slave_node/jdk/bin/java
bash: /app/var/lib/jenkins/slave_node/jdk/bin/java: No such file or directory[11/27/18 16:19:03] [SSH] Checking java version of java
[11/27/18 16:19:03] [SSH] java -version returned 1.8.0_181.
[11/27/18 16:19:03] [SSH] Starting sftp client.
[11/27/18 16:19:03] [SSH] Copying latest remoting.jar...
[11/27/18 16:19:03] [SSH] Copied 776,265 bytes.
Expanded the channel window size to 4MB
[11/27/18 16:19:03] [SSH] Starting agent process: cd "/app/var/lib/jenkins/slave_node" && java  -jar remoting.jar -workDir /app/var/lib/jenkins/slave_node
Nov 27, 2018 4:19:03 PM org.jenkinsci.remoting.engine.WorkDirManager initializeWorkDir
INFO: Using /app/var/lib/jenkins/slave_node/remoting as a remoting work directory

Both error and output logs will be printed to /app/var/lib/jenkins/slave_node/remoting
<===[JENKINS REMOTING CAPACITY]===>channel started
Remoting version: 3.25
This is a Unix agent

Evacuated stdout
Agent successfully connected and online{noformat}

kosta@noima.com (JIRA)

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Nov 27, 2018, 4:53:03 PM11/27/18
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Error log 1 :

{noformat}
SSHLauncher{host='jenkins-slave.example.com', port=22, credentialsId='jenkins-master-ssh-key', jvmOptions='', javaPath='', prefixStartSlaveCmd='', suffixStartSlaveCmd='', launchTimeoutSeconds=210, maxNumRetries=10, retryWaitTime=15, sshHostKeyVerificationStrategy=hudson.plugins.sshslaves.verifiers.KnownHostsFileKeyVerificationStrategy, tcpNoDelay=true, trackCredentials=true}
[11/27/18 16: 46:51] [SSH] Opening SSH connection to jenkins-slave.example.com:22.
ERROR: null
java.util.concurrent.CancellationException
at java.util.concurrent.FutureTask.report(FutureTask.java:121)
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
at hudson.plugins.sshslaves.SSHLauncher.launch(SSHLauncher.java:902)
at hudson.slaves.SlaveComputer$1.call(SlaveComputer.java:294)
at jenkins.util.ContextResettingExecutorService$2.call(ContextResettingExecutorService.java:46)
at jenkins.security.ImpersonatingExecutorService$2.call(ImpersonatingExecutorService.java:71)

at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
[11/27/ 18 16 : 50:21] Launch failed - cleaning up connection
[11/27/18 16:50:21] SSH Launch of cac-slave-01 on jenkins-slave.example.com failed in 210,000 ms{noformat}
Error log 2:
08] [SSH] Opening SSH connection to jenkins-slave.example.com:22.

kosta@noima.com (JIRA)

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Nov 27, 2018, 4:55:01 PM11/27/18
to jenkinsc...@googlegroups.com
Konstantinos Psimoulis updated an issue
Change By: Konstantinos Psimoulis
Environment: Jenkins ver. 2.138.2
ssh-slaves-plugin ver: 1. 28 29 .1
Linux RHEL 7.5

kosta@noima.com (JIRA)

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Nov 27, 2018, 4:56:03 PM11/27/18
to jenkinsc...@googlegroups.com
Konstantinos Psimoulis updated an issue
Launch agent has issues after restarting Jenkins. If you try to launch several times, it will eventually work.

 

ssh rules: no-port-forwarding,no-X11-forwarding,no-agent-forwarding,no-pty

 

Node config.xml
{code:java}
<?xml version='1.1' encoding='UTF-8'?>
<slave>
  <name>cac-slave-01</name>
  <description></description>
  <remoteFS>/app/var/lib/jenkins/slave_node</remoteFS>
  <numExecutors>5</numExecutors>
  <mode>NORMAL</mode>
  <retentionStrategy class="hudson.slaves.RetentionStrategy$Always"/>
  <launcher class="hudson.plugins.sshslaves.SSHLauncher" plugin="ssh-slaves@1. 28 29 .1">
[11/27/18 16:50:21] Launch failed - cleaning up connection

kuisathaverat@gmail.com (JIRA)

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Nov 28, 2018, 6:42:02 AM11/28/18
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Ivan Fernandez Calvo commented on Bug JENKINS-54897
 
Re: Unexpected error in launching a agent after restart

Did you see if the plugin retry to connect automatically? if should be because has the default configuration to make it `launchTimeoutSeconds=210, maxNumRetries=10, retryWaitTime=15`, after 15 seconds of the fail it must retry to connect

The duplicate messages bothered me, it is like two processes were running at the same time, Which JDK do you use?

[11/27/18 16:18:08] [SSH] Opening SSH connection to jenkins-slave.example.com:22.
[11/27/18 16:18:29] [SSH] SSH host key matches key in Known Hosts file. Connection will be allowed.
[11/27/18 16:18:29] [SSH] SSH host key matches key in Known Hosts file. Connection will be allowed.
[11/27/18 16:18:29] [SSH] Authentication successful.
[11/27/18 16:18:29] [SSH] Authentication successful.
[11/27/18 16:18:29] [SSH] The remote user's environment is:
[11/27/18 16:18:29] [SSH] The remote user's environment is:

kosta@noima.com (JIRA)

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Nov 30, 2018, 9:25:03 AM11/30/18
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openjdk version "1.8.0_181"
OpenJDK Runtime Environment (build 1.8.0_181-b13)
OpenJDK 64-Bit Server VM (build 25.181-b13, mixed mode)

I think this is because I clicked Launch Agent and at the same time it was configured to re-try. I guess there are no semaphores to handle that

kuisathaverat@gmail.com (JIRA)

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Nov 30, 2018, 12:05:02 PM11/30/18
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yep, I start understanding what happens in every `CancellationException`, I am working on a consistent way to replicate it on a test to make a proper fix.

kuisathaverat@gmail.com (JIRA)

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Nov 30, 2018, 12:06:02 PM11/30/18
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yep, I start understanding 'm starting to understand what happens in every `CancellationException`, I am working on a consistent way to replicate it on a test to make a proper fix.

rashfor@synopsys.com (JIRA)

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Jan 4, 2019, 1:43:02 PM1/4/19
to jenkinsc...@googlegroups.com

Can you recommend any workarounds? This is crippling a major lift-and-shift project for us.

kuisathaverat@gmail.com (JIRA)

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Jan 4, 2019, 3:29:02 PM1/4/19
to jenkinsc...@googlegroups.com

On the logs attached the retries are not working so the SSHLauncher should be blocked by other thread, it is possibly related to the credentials tracking issue JENKINS-49235 if you get a thread dump when the issue happens you can compare it to this troubleshooting threads-stuck-at-credentialsprovidertrackall

kuisathaverat@gmail.com (JIRA)

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Jul 21, 2019, 3:41:03 PM7/21/19
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Ivan Fernandez Calvo started work on Bug JENKINS-54897
 
Change By: Ivan Fernandez Calvo
Status: Open In Progress

kuisathaverat@gmail.com (JIRA)

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Jul 21, 2019, 3:41:03 PM7/21/19
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Status: In Progress Review

kuisathaverat@gmail.com (JIRA)

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Sep 12, 2019, 4:21:04 PM9/12/19
to jenkinsc...@googlegroups.com
Status: In Review Resolved
Resolution: Fixed
Released As: ssh-slaves-1.30.2
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