Hello Jenkins community,
I have setup Jenkins agents over SSH and this agent frequently goes offline with Resource temporarily unavailable error. I had to configure my Jenkins agents to communicate over JNLP. Any advise on how to fix this issue? Jenkins v2.249.1 [12/04/20 15:23:00] [SSH] Checking java version of java [12/04/20 15:23:01] [SSH] java -version returned 1.8.0_202. [12/04/20 15:23:01] [SSH] Starting sftp client. [12/04/20 15:23:03] [SSH] Remote file system root $JENKINS_SSH_DATA does not exist. Will try to create it... [12/04/20 15:23:03] [SSH] Copying latest remoting.jar... [12/04/20 15:23:03] [SSH] Copied 1,521,553 bytes. Expanded the channel window size to 4MB [12/04/20 15:23:03] [SSH] Starting agent process: cd "$JENKINS_SSH_DATA" && java -jar remoting.jar -workDir $JENKINS_SSH_DATA -jar-cache $JENKINS_SSH_DATA/remoting/jarCache Dec 04, 2020 3:23:29 PM org.jenkinsci.remoting.engine.WorkDirManager initializeWorkDir INFO: Using $JENKINS_SSH_DATA/remoting as a remoting work directory Dec 04, 2020 3:23:29 PM org.jenkinsci.remoting.engine.WorkDirManager setupLogging INFO: Both error and output logs will be printed to $JENKINS_SSH_DATA/remoting <===[JENKINS REMOTING CAPACITY]===>channel started Remoting version: 4.5 This is a Unix agent Evacuated stdout Agent successfully connected and online The Agent is connected, disconnect it before to try to connect it again. Dec 04, 2020 3:33:58 PM org.eclipse.jgit.util.FS discoverGitSystemConfig WARNING: Exception caught during execution of command '[git, config, --system, --edit]' in '$GIT_PATH/bin', return code '128', error message 'fatal: Invalid path '$GIT_PATH/etc': No such file or directory ' Dec 04, 2020 3:33:58 PM org.eclipse.jgit.util.FS$FileStoreAttributes saveToConfig WARNING: locking FileBasedConfig[$JENKINS_PATH/.config/jgit/config] failed after 5 retries Dec 04, 2020 3:33:59 PM org.jenkinsci.remoting.util.AnonymousClassWarnings warn WARNING: Attempt to (de-)serialize anonymous class com.sonyericsson.hudson.plugins.gerrit.trigger.hudsontrigger.GerritTriggerBuildChooser$1; see: https://jenkins.io/redirect/serialization-of-anonymous-classes/ Dec 04, 2020 3:34:24 PM hudson.remoting.Request$2 run WARNING: Failed to send back a reply to the request hudson.remoting.Request$2@493c5a4e java.io.IOException: Resource temporarily unavailable at java.io.FileOutputStream.writeBytes(Native Method) at java.io.FileOutputStream.write(FileOutputStream.java:313) at hudson.remoting.StandardOutputStream.write(StandardOutputStream.java:83) at hudson.remoting.ChunkedOutputStream.sendFrame(ChunkedOutputStream.java:89) at hudson.remoting.ChunkedOutputStream.sendBreak(ChunkedOutputStream.java:62) at hudson.remoting.ChunkedCommandTransport.writeBlock(ChunkedCommandTransport.java:46) at hudson.remoting.AbstractSynchronousByteArrayCommandTransport.write(AbstractSynchronousByteArrayCommandTransport.java:46) at hudson.remoting.Channel.send(Channel.java:766) at hudson.remoting.Request$2.run(Request.java:388) at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:73) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Dec 04, 2020 5:25:30 PM hudson.remoting.Request$2 run WARNING: Failed to send back a reply to the request hudson.remoting.Request$2@2511e2d4 java.io.IOException: Resource temporarily unavailable at java.io.FileOutputStream.writeBytes(Native Method) at java.io.FileOutputStream.write(FileOutputStream.java:326) at hudson.remoting.StandardOutputStream.write(StandardOutputStream.java:88) at hudson.remoting.ChunkedOutputStream.sendFrame(ChunkedOutputStream.java:90) at hudson.remoting.ChunkedOutputStream.drain(ChunkedOutputStream.java:85) at hudson.remoting.ChunkedOutputStream.write(ChunkedOutputStream.java:54) at java.io.OutputStream.write(OutputStream.java:75) at hudson.remoting.ChunkedCommandTransport.writeBlock(ChunkedCommandTransport.java:45) at hudson.remoting.AbstractSynchronousByteArrayCommandTransport.write(AbstractSynchronousByteArrayCommandTransport.java:46) at hudson.remoting.Channel.send(Channel.java:766) at hudson.remoting.Request$2.run(Request.java:388) at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:73) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) ERROR: Connection terminated java.io.StreamCorruptedException: invalid stream header: 00025B42 at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:866) at java.io.ObjectInputStream.<init>(ObjectInputStream.java:358) at hudson.remoting.ObjectInputStreamEx.<init>(ObjectInputStreamEx.java:49) at hudson.remoting.Command.readFrom(Command.java:142) at hudson.remoting.Command.readFrom(Command.java:128) at hudson.remoting.AbstractSynchronousByteArrayCommandTransport.read(AbstractSynchronousByteArrayCommandTransport.java:35) at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:63) Dec 04, 2020 5:32:30 PM hudson.slaves.ChannelPinger$1 onDead INFO: Ping failed. Terminating the channel channel. java.util.concurrent.TimeoutException: Ping started at 1607120910589 hasn't completed by 1607121150590 at hudson.remoting.PingThread.ping(PingThread.java:134) at hudson.remoting.PingThread.run(PingThread.java:90) Thanks, Jigar R You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [hidden email]. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/d11ea78f-af76-44d9-895d-8270ee98872cn%40googlegroups.com. |
This has been discussed before. Did you search this group's archives? You might be better off re-starting a conversation in one of those threads.
My own experience is that I too saw this issue for many months. It cleared up on its own. In that interim I did upgrade jenkins more than once and I did switch from dualstack ipv4/ipv6 to ipv4 only for all jenkins work as I was getting errors deploying containers when ipv6 was enabled. I have no idea if either of these actually mattered, and I'm sure other things changed that I am assuming are completely unrelated but may not be. On Wednesday, December 9, 2020 at 11:53:19 AM UTC-5 [hidden email] wrote: Hello Jenkins community, You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [hidden email]. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/b1f9aa56-7092-4bdd-95c8-d1e9f0c96ac8n%40googlegroups.com. |
In reply to this post by JR ibkr
The most common issue is related to disconnections because there is no traffic between the Jenkins instance and the agent, for that, you have to tune the TCP stack of your OS (see https://support.cloudbees.com/hc/en-us/articles/115001369667-dedicated-SSH-agents-formerly-slaves-get-disconnected), or enable the keepalive option in the SSH protocol this can be configured by setting ClientAliveInterval or TCPKeepAlive on the SSH server (/etc/ssh/sshd_config), also by setting ServerAliveInterval or TCPKeepAlive options for the user connection (/etc/ssh/ssh_config or ~/.ssh/ssh_config) https://www.freebsd.org/cgi/man.cgi?sshd_config(5) Also, check you follow the best practices to configure your SSH agents and enable SSH verbose log output in your service (see https://github.com/jenkinsci/ssh-slaves-plugin/blob/master/doc/TROUBLESHOOTING.md) El miércoles, 9 de diciembre de 2020 a las 17:53:19 UTC+1, [hidden email] escribió: Hello Jenkins community, You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [hidden email]. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/0cca6599-cdb2-4dc2-a7df-d756e4e793b3n%40googlegroups.com. |
Interestingly, whenever Jenkins agent is executing PMD/Findbugs task, it runs into " Resource temporarily unavailable".
I have
On Friday, December 11, 2020 at 12:11:39 PM UTC-5 [hidden email] wrote:
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If the agent is running something there is traffic, so it si not related to keep alive settings, I wonder if after the issue happens there is a remoting process running on the agent. Did you check the SSHD service logs on your agent? https://github.com/jenkinsci/ssh-slaves-plugin/blob/master/doc/TROUBLESHOOTING.md#enable-verbose-ssh-server-log-output Did you check the remoting logs? https://github.com/jenkinsci/remoting/blob/master/docs/logging.md Did you check for hs_err_pid error files in the root fs of the agent? http://www.oracle.com/technetwork/java/javase/felog-138657.html#gbwcy How much memory you set for your remoting process? How much memory your maven build needs? El miércoles, 30 de diciembre de 2020 a las 23:40:38 UTC+1, [hidden email] escribió: Interestingly, whenever Jenkins agent is executing PMD/Findbugs task, it runs into " Resource temporarily unavailable". You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [hidden email]. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/2b23ef01-3890-4fbd-962b-970a5efec3d8n%40googlegroups.com. |
In reply to this post by JR ibkr
When I saw something like this in the past, it was because the process was running out of resources. Specifically when running SpotBugs, I got out-of-memory errors. I had to modify the pom to allocate more memory. I recommend ensuring your build runs normally on the agent without the additional complexities of the Jenkins environment. This might show where additional resources are needed. If that all passes, then continue on to the additional troubleshooting steps involving the Jenkins controller and agent. Jeff Thompson On 12/30/20 3:40 PM, [hidden email]
wrote:
Interestingly, whenever Jenkins agent is executing PMD/Findbugs task, it runs into " Resource temporarily unavailable".-- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [hidden email]. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/88bf8ba5-d077-cc33-964b-1667138c1aa3%40cloudbees.com. |
On Monday, January 4, 2021 at 12:37:52 PM UTC-5 [hidden email] wrote:
I have 2 different kind of jenkins agents. 1. java web start 2. ssh If the memory was issue then wouldn't it fail on both cases? I do see "Agent went offline during build Connection was broker: java.io.StreamCorruptedException: invalid stream header:".
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>I have 2 different kind of jenkins agents.
>1. java web start >2. ssh >If the memory was issue then wouldn't it fail on both cases? Not necessarily, starting by the point that are different ways to establish the connection, the JNLP agents could not update the remoting jar file (depends on your configurations), so you can be running different versions of remoting. I agree with Jeff looks like an OOM issue, review my comments at https://groups.google.com/g/jenkinsci-users/c/nD3s06hSUXE/m/BQKk5GSYBwAJ my recommendation is to fix the mem for the remoting process to 1024M (-Xmx1024m -Xms1024m) see if the issue disappear or change, if disappear, you would have to adjust the remoting process memory to the right one between 256M-1024M, to use 512M usually is safe a not too much (but depends on your agents' memory we do not know how much they have) El lunes, 1 de febrero de 2021 a las 23:52:19 UTC+1, [hidden email] escribió:
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On Tuesday, February 2, 2021 at 12:20:19 PM UTC-5 [hidden email] wrote: >I have 2 different kind of jenkins agents. I created SSH agent with -Xmx1024m -Xms1024m. I do see bunch of Warnings about "Ping failed. Terminating the channel channel". I got following error: " WARNING: Failed to send back a reply to te rquest hudson.remoting.Request$.... java.io.IOException: Resource temporarily unavailable at java.io.FileOutputStream.writeBytes(Native method) ..... "
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Weird, Could you share a screencapture of what you configurate? Also the whole exception those lines alone mean nothing. Know the version of Jenkins and the version of the SSH build agents plugins you use can help, the memory you have in your agents, if they are bare metal or cloud. In overall if you want help please provide more context. El mar, 2 feb 2021 a las 22:52, Jigar R (<[hidden email]>) escribió:
Un Saludo Iván Fernández Calvo You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [hidden email]. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/CAKo5QrpE%2Bxys4CwNGe6Mx7NRozmeFxaJO0uZ77Rz3NUK057WEA%40mail.gmail.com. |
Hello Ivan,
Attached the logs in the email
Jenkins SSH agent was created with following:
Environment information
On Tuesday, February 2, 2021 at 5:27:07 PM UTC-5 [hidden email] wrote:
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I see some serialization fails and this breaks the channel, the plugin that causes the exception seems https://github.com/jenkinsci/tasks-plugin, and the `[Deprecated] Scan workspace for open tasks` I think matters, this plugins has been integrated into https://github.com/jenkinsci/warnings-ng-plugin and https://github.com/jenkinsci/analysis-model ERROR: Step ‘[Deprecated] Scan workspace for open tasks’ aborted due to exception: java.io.StreamCorruptedException: invalid type code: 6D ... at hudson.plugins.tasks.TasksPublisher.perform(TasksPublisher.java:182) at hudson.plugins.analysis.core.HealthAwarePublisher.perform(HealthAwarePublisher.java:69) at hudson.plugins.analysis.core.HealthAwareRecorder.perform(HealthAwareRecorder.java:298) at jenkins.tasks.SimpleBuildStep.perform(SimpleBuildStep.java:112) at hudson.tasks.BuildStepCompatibilityLayer.perform(BuildStepCompatibilityLayer.java:78) at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20) at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:741) at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:690) at hudson.model.Build$BuildExecution.post2(Build.java:186) at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:635) at hudson.model.Run.execute(Run.java:1919) at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43) at hudson.model.ResourceController.execute(ResourceController.java:97) at hudson.model.Executor.run(Executor.java:428) El jue, 4 feb 2021 a las 14:58, Jigar R (<[hidden email]>) escribió: Hello Ivan, Un Saludo Iván Fernández Calvo You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [hidden email]. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/CAKo5Qrr7zpoT__4EeG-oXzPeW-518g56oPphTV0989yLgyr9wQ%40mail.gmail.com. |
In reply to this post by Ivan Fernandez Calvo
I agree with Ivan. There are differences, sometimes subtle, between how different agents behave for various reasons. The basic operations of the plugins and the protocol should be the same. There are can be differences in resource usage, platforms, etc. Sometimes plugins will behave differently on different one. Try out some of Ivan's suggests or other troubleshooting like that and figure out how to isolate the problem. Jeff Thompson On 2/2/21 10:20 AM, Ivan Fernandez
Calvo wrote:
>I have 2 different kind of jenkins agents.-- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [hidden email]. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/2999d743-ff8c-aa70-fcd5-e2ed64bcb854%40cloudbees.com. |
In reply to this post by Ivan Fernandez Calvo
On Thu, Feb 4, 2021 at 9:29 AM kuisathaverat <[hidden email]> wrote:
Thanks for this information. I will move to use warning-ng plugin & see if it breaks this or not.
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On Thursday, February 4, 2021 at 12:20:21 PM UTC-5 Jigar R wrote:
I updated jenkins job to use warnings NG instead of deprecated plugins. After lots of trial and error, I found that jenkins SSH agent would throw EOFException while running JaCoCo plugin v3.0.7 (https://plugins.jenkins.io/jacoco/). Attached logs.
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Any recommendations on how should I go about this new error?
On Thursday, February 4, 2021 at 5:26:13 PM UTC-5 Jigar R wrote:
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you attached the Jenkins build log and the Agent log, should be also an exception in the Jenkins log, Is the same you posted before `invalid type code: 6D`? El mar, 9 feb 2021 a las 21:23, Jigar R (<[hidden email]>) escribió: Any recommendations on how should I go about this new error? Un Saludo Iván Fernández Calvo You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [hidden email]. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/CAKo5Qrr-GttQ6Yj3G5%2B6h8n_qPrbqcgFTjAg2G-EQY6L1wH_yA%40mail.gmail.com. |
On Wednesday, February 10, 2021 at 9:30:28 AM UTC-5 [hidden email] wrote:
This is all I see in jenkins.err log 2021-02-11 21:44:00.121+0000 [id=67650] INFO h.r.SynchronousCommandTransport$ReaderThread#run: I/O error in channel ssh_agent java.io.EOFException at java.io.ObjectInputStream$BlockDataInputStream.readFully(ObjectInputStream.java:3106) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1956) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1567) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2287) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2211) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2069) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1573) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2287) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2211) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2069) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1573) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:431) at hudson.remoting.Command.readFromObjectStream(Command.java:155) at hudson.remoting.Command.readFrom(Command.java:142) at hudson.remoting.Command.readFrom(Command.java:128) at hudson.remoting.AbstractSynchronousByteArrayCommandTransport.read(AbstractSynchronousByteArrayCommandTransport.java:35) at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:63) Caused: java.io.IOException: Unexpected termination of the channel at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:77) 2021-02-11 21:44:00.122+0000 [id=67569] WARNING h.m.AbstractBuild$AbstractBuildExecution#reportError: Step ‘Record compiler warnings and static analysis results’ aborted due to exception: java.io.IOException: No workspace found for JOB_NAME #116 at io.jenkins.plugins.analysis.core.steps.IssuesRecorder.perform(IssuesRecorder.java:577) at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20) at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:741) at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:690) at hudson.model.Build$BuildExecution.post2(Build.java:186) at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:635) at hudson.model.Run.execute(Run.java:1919) at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43) at hudson.model.ResourceController.execute(ResourceController.java:97) at hudson.model.Executor.run(Executor.java:428) 2021-02-11 21:44:00.283+0000 [id=67569] WARNING hudson.ivy.IvyBuildTrigger#recomputeModuleDescriptor: Cannot read ivy file backup...removing ModuleDescriptor 2021-02-11 21:44:00.287+0000 [id=67569] WARNING hudson.ivy.IvyBuildTrigger#getModuleDescriptor: Node is offline for JOB_NAME, using project to get Module Descriptor
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Looks like an abrupt disconnect, this point to the resources you give to the remote process and the resources you have in the agent. The resource management on a JVM is tricky, the JDK gives a 75% of the memory resources if you do not pass Xmx and Xms settings. So I wonder how much memory you have on those agents and if you set those limits. Based on my experience less than 4GB for sunfire tasks use to be tight.
Un Saludo Ivan Fernandez Calvo El 12 feb 2021, a las 17:32, Jigar R <[hidden email]> escribió: -- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [hidden email]. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/3E29DA25-7732-4BA6-9C29-47544088D8D7%40gmail.com. |
Sent from my iPhone On Feb 12, 2021, at 1:09 PM, Iván Fernández Calvo <[hidden email]> wrote:
I am using -Xmx2048m -Xms2048m. I will increase it to 4096 and see what happens. Thanks, Jigar R -- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [hidden email]. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/22ACBD5A-0D12-4BCD-BCFE-AFC490606099%40gmail.com. |
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