Unlike most POSIX (Unix) like systems where there is only one root file system, windows has multiple.
As such you have multiple current working directories, one per root. You may be in C:\Program Files\Java\jdk\bin and D:\home\myusername\ and E:\projects\projectx\ at the same time. You need to inform the system which file system (volume) is the current volume. E.g. Microsoft Windows [Version 10.0.18363.778] (c) 2019 Microsoft Corporation. All rights reserved. C:\Users\jpyeron.000>D: D:\>C: C:\Users\jpyeron.000>CD D:\inst C:\Users\jpyeron.000>D: D:\inst>CD \\?\C:\ '\\?\C:\' CMD does not support UNC paths as current directories. D:\inst>CD /D C:\ C:\>CD /? Displays the name of or changes the current directory. CHDIR [/D] [drive:][path] CHDIR [..] CD [/D] [drive:][path] CD [..] .. Specifies that you want to change to the parent directory. Type CD drive: to display the current directory in the specified drive. Type CD without parameters to display the current drive and directory. Use the /D switch to change current drive in addition to changing current directory for a drive. … From: jenkinsci-users@googlegroups.com <jenkinsci-users@googlegroups.com> On Behalf Of Jérôme Godbout Sent: Friday, November 27, 2020 11:34 AM To: jenkinsci-users@googlegroups.com Subject: RE: Java install for Windows agent? You do a windows junction into the filesystem? why does it need the prior cd path && and not just jump into the junction path directly before/after the junction is created??? une compagnie RAPPROCHEZ LA DISTANCE Jérôme Godbout Software / Firmware Lead p: +1 (418) 800-1073 ext.:109 <http://www.amotus-solutions.com/> amotus.ca <http://statum-iot.com/> statum-iot.com <https://www.facebook.com/LesSolutionsAmotus/> <https://www.linkedin.com/company/amotus-solutions/> <https://twitter.com/AmotusSolutions> <https://www.youtube.com/channel/UCoYpQgsmj1iJZyDjTQ3x8Ig> COVID-19 : we are glad to inform you that <https://www.amotus-solutions.com/> Amotus are up and running with limited impact on our performance. We will keep you informed of any changes as they occur. COVID-19 : nous sommes fiers d’informer nos collaborateurs que Amotus opèrent adéquatement et que l’impact sur notre productivité est minimisé. Nous vous tiendrons au courant de tout changement. From: jenkinsci-users@googlegroups.com <mailto:jenkinsci-users@googlegroups.com> <jenkinsci-users@googlegroups.com <mailto:jenkinsci-users@googlegroups.com> > On Behalf Of Jason Pyeron Sent: November 27, 2020 10:20 AM To: jenkinsci-users@googlegroups.com <mailto:jenkinsci-users@googlegroups.com> Subject: RE: Java install for Windows agent? We use a junction. From: jenkinsci-users@googlegroups.com <mailto:jenkinsci-users@googlegroups.com> [mailto:jenkinsci-users@googlegroups.com] On Behalf Of Jérôme Godbout Sent: Friday, November 27, 2020 10:15 AM To: jenkinsci-users@googlegroups.com <mailto:jenkinsci-users@googlegroups.com> Subject: RE: Java install for Windows agent? Ho right, mine was into c:\JenkinsSlave Starting agent process: cd "c:\JenkinsSlave" && C:\Java\1_8_0_261\/bin/java -jar remoting.jar -workDir c:\JenkinsSlave -jar-cache c:\JenkinsSlave/remoting/jarCache make me wonder why it need to change the directory before running since the working directory is already pass as an argument, the remoting.jar should change the current working directory by itself in a cross platform way. This seem like someone got lazy into the remoting.jar and put that awkward cwd needs in front. Should maybe have a flag to move to cwd to workDir --CwdFromWorkDir if not all use case need that. That would avoid all that mess upfront and make it easier to have cross platform behavior. My 2 cents about this. une compagnie RAPPROCHEZ LA DISTANCE Jérôme Godbout Software / Firmware Lead p: +1 (418) 800-1073 ext.:109 <http://www.amotus-solutions.com/> amotus.ca <http://statum-iot.com/> statum-iot.com <https://www.facebook.com/LesSolutionsAmotus/> <https://www.linkedin.com/company/amotus-solutions/> <https://twitter.com/AmotusSolutions> <https://www.youtube.com/channel/UCoYpQgsmj1iJZyDjTQ3x8Ig> COVID-19 : we are glad to inform you that <https://www.amotus-solutions.com/> Amotus are up and running with limited impact on our performance. We will keep you informed of any changes as they occur. COVID-19 : nous sommes fiers d’informer nos collaborateurs que Amotus opèrent adéquatement et que l’impact sur notre productivité est minimisé. Nous vous tiendrons au courant de tout changement. From: jenkinsci-users@googlegroups.com <mailto:jenkinsci-users@googlegroups.com> <jenkinsci-users@googlegroups.com <mailto:jenkinsci-users@googlegroups.com> > On Behalf Of David Aldrich Sent: November 27, 2020 9:24 AM To: jenkinsci-users@googlegroups.com <mailto:jenkinsci-users@googlegroups.com> Subject: Re: Java install for Windows agent? Thanks. The problem was that Jenkins executes: cd "e:\jenkins" && %JAVA_HOME%\java.exe -jar remoting.jar ... but cd does not change drive, it remains on C: and can't find \jenkins and so fails. I fixed it by putting 'E: && ' in the remote command prefix box. Perhaps there is a better way ... On Fri, Nov 27, 2020 at 2:02 PM Jérôme Godbout <godbo...@amotus.ca <mailto:godbo...@amotus.ca> > wrote: Hi, make sure Jenkins remote user does have access to your e:\jenkins and clean that folder content of any previous data there. If this is not working, check the master remote file for any right or corruption. Jerome une compagnie RAPPROCHEZ LA DISTANCE Jérôme Godbout Software / Firmware Lead p: +1 (418) 800-1073 ext.:109 <http://www.amotus-solutions.com/> amotus.ca <http://statum-iot.com/> statum-iot.com <https://www.facebook.com/LesSolutionsAmotus/> <https://www.linkedin.com/company/amotus-solutions/> <https://twitter.com/AmotusSolutions> <https://www.youtube.com/channel/UCoYpQgsmj1iJZyDjTQ3x8Ig> COVID-19 : we are glad to inform you that <https://www.amotus-solutions.com/> Amotus are up and running with limited impact on our performance. We will keep you informed of any changes as they occur. COVID-19 : nous sommes fiers d’informer nos collaborateurs que Amotus opèrent adéquatement et que l’impact sur notre productivité est minimisé. Nous vous tiendrons au courant de tout changement. From: jenkinsci-users@googlegroups.com <mailto:jenkinsci-users@googlegroups.com> <jenkinsci-users@googlegroups.com <mailto:jenkinsci-users@googlegroups.com> > On Behalf Of David Aldrich Sent: November 27, 2020 4:17 AM To: jenkinsci-users@googlegroups.com <mailto:jenkinsci-users@googlegroups.com> Subject: Re: Java install for Windows agent? Still trying to connect to Jenkins Windows agent using ssh. I have configured JAVA_HOME on the agent and set the agent's configuration to: JavaPath %JAVA_HOME%\java.exe but I get: [11/27/20 09:15:15] [SSH] Copying latest remoting.jar... Source agent hash is D866F0B482DB94F38E49B26B465D5DB5. Installed agent hash is D866F0B482DB94F38E49B26B465D5DB5 Verified agent jar. No update is necessary. Expanded the channel window size to 4MB [11/27/20 09:15:16] [SSH] Starting agent process: cd "E:\jenkins" && %JAVA_HOME%\java.exe -jar remoting.jar -workDir E:\jenkins -jar-cache E:\jenkins/remoting/jarCache Error: Unable to access jarfile remoting.jar Agent JVM has terminated. Exit code=1 [11/27/20 09:15:16] Launch failed - cleaning up connection [11/27/20 09:15:16] [SSH] Connection closed. Any idea why it can't access remoting.jar? Best regards David On Thu, Nov 26, 2020 at 9:26 PM Jérôme Godbout <godbo...@amotus.ca <mailto:godbo...@amotus.ca> > wrote: You can inject the wanted java folder into the Node configuration into Jenkins master configuration panels: Add environments variable into your node and set: Name: JAVA_HOME value: C:\Java\jdk1.8.0_261\ Take Care the Windows version doesn’t like Java path with a space in it, a patch have been made put you might end up into a version that doesn’t support it, for ease, just install java into a path without space. This prevent having to define the JAVA_HOME for the whole machine and ease the multiple java version on that machine. Jenkins will change it and can will use it to load the slave properly. une compagnie RAPPROCHEZ LA DISTANCE Jérôme Godbout Software / Firmware Lead p: +1 (418) 800-1073 ext.:109 <http://www.amotus-solutions.com/> amotus.ca <http://statum-iot.com/> statum-iot.com <https://www.facebook.com/LesSolutionsAmotus/> <https://www.linkedin.com/company/amotus-solutions/> <https://twitter.com/AmotusSolutions> <https://www.youtube.com/channel/UCoYpQgsmj1iJZyDjTQ3x8Ig> COVID-19 : we are glad to inform you that <https://www.amotus-solutions.com/> Amotus are up and running with limited impact on our performance. We will keep you informed of any changes as they occur. COVID-19 : nous sommes fiers d’informer nos collaborateurs que Amotus opèrent adéquatement et que l’impact sur notre productivité est minimisé. Nous vous tiendrons au courant de tout changement. From: jenkinsci-users@googlegroups.com <mailto:jenkinsci-users@googlegroups.com> <jenkinsci-users@googlegroups.com <mailto:jenkinsci-users@googlegroups.com> > On Behalf Of David Aldrich Sent: November 26, 2020 2:03 PM To: jenkinsci-users@googlegroups.com <mailto:jenkinsci-users@googlegroups.com> Subject: Java install for Windows agent? Hi I have now partially succeeded in connecting to a Windows 10 agent from Jenkins via ssh. The ssh part succeeds but the connection then fails with: "Couldn't figure out the Java version of E:\jenkins/jdk/bin/java" I don't know why it's choosing that path as I have not specified a Java path. I know this is basic, but please suggest which JRE/JDK I should use and where I should install it. Thanks David -- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. 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