[JIRA] (JENKINS-50601) SSH plugin cannot negotiate
Title: Message Title Ivan Fernandez Calvo updated JENKINS-50601 Jenkins / JENKINS-50601 SSH plugin cannot negotiate Change By: Ivan Fernandez Calvo Status: Fixed but Unreleased Closed Add Comment This message was sent by Atlassian Jira (v7.13.6#713006-sha1:cc4451f) -- You received this message because you are subscribed to the Google Groups "Jenkins Issues" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-issues+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-issues/JIRA.189675.1522946455000.10330.1580577060677%40Atlassian.JIRA.
[JIRA] (JENKINS-50601) SSH plugin cannot negotiate
Title: Message Title Jeff Thompson commented on JENKINS-50601 Re: SSH plugin cannot negotiate It looks like there is a mismatch between the key exchange algorithms offered by the Jenkins server and those accepted on your Windows agent side. You might check which algorithms are enabled for your sshd on your Windows machine. The diffie-hellman-group-exchange-sha256 one is considered current, strong, and acceptable. Is this a new and different error from something that used to work? Or are you just trying to get things set up and working? You might try asking for configuration assistance on the Jenkins Users group. You might get better assistance there. Add Comment This message was sent by Atlassian JIRA (v7.3.0#73011-sha1:3c73d0e) -- You received this message because you are subscribed to the Google Groups "Jenkins Issues" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-issues+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[JIRA] (JENKINS-50601) SSH plugin cannot negotiate
Title: Message Title Ivan Fernandez Calvo commented on JENKINS-50601 Re: SSH plugin cannot negotiate You have to enable one of these key exchange methods on your sshd_config, these are the only available diffie-hellman-group-exchange-sha256 diffie-hellman-group-exchange-sha1 diffie-hellman-group14-sha1 diffie-hellman-group1-sha1 https://github.com/jenkinsci/trilead-ssh2/blob/8ddd97a72e62f62e9eb04c873610893be1a8b053/src/com/trilead/ssh2/transport/KexManager.java#L334 Add Comment This message was sent by Atlassian JIRA (v7.3.0#73011-sha1:3c73d0e) -- You received this message because you are subscribed to the Google Groups "Jenkins Issues" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-issues+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[JIRA] (JENKINS-50601) SSH plugin cannot negotiate
Title: Message Title Devin Nusbaum commented on JENKINS-50601 Re: SSH plugin cannot negotiate I am not really familiar with any of these plugins. Maybe something is wrong with the Trilead version detection in the ssh-slaves-plugin that is causing it to use outdated key exchange algorithms. Ivan Fernandez Calvo might be more familiar with the plugin and have an idea whether this is a bug or something that needs to be configured. Add Comment This message was sent by Atlassian JIRA (v7.3.0#73011-sha1:3c73d0e) -- You received this message because you are subscribed to the Google Groups "Jenkins Issues" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-issues+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[JIRA] (JENKINS-50601) SSH plugin cannot negotiate
Title: Message Title Zack Snyder commented on JENKINS-50601 Re: SSH plugin cannot negotiate Devin Nusbaum Any update here? Add Comment This message was sent by Atlassian JIRA (v7.3.0#73011-sha1:3c73d0e) -- You received this message because you are subscribed to the Google Groups "Jenkins Issues" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-issues+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[JIRA] (JENKINS-50601) SSH plugin cannot negotiate
Title: Message Title Zack Snyder commented on JENKINS-50601 Re: SSH plugin cannot negotiate Like I already said, connection via bash works without a problem. The problem is the ssh jenkins plugin which is outdated. It seems to ship with an own openssh agent , which is of course wrong. It should always use the native one. (but I am not sure about that, maybe it invokes it wrong). Anyway, the problem is the jenkins plugin. I have the latest version of jenks. See the system_info. Add Comment This message was sent by Atlassian JIRA (v7.3.0#73011-sha1:3c73d0e) -- You received this message because you are subscribed to the Google Groups "Jenkins Issues" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-issues+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[JIRA] (JENKINS-50601) SSH plugin cannot negotiate
Title: Message Title Devin Nusbaum edited a comment on JENKINS-50601 Re: SSH plugin cannot negotiate Not sure offhand, but I would start with making sure you are running the same version of OpenSSH needs to be updated on the agent and master. See https://www.openssh.com/legacy.html for some options you can pass to OpenSSH to enable legacy key exchange algorithms if you are unable to update. Add Comment This message was sent by Atlassian JIRA (v7.3.0#73011-sha1:3c73d0e) -- You received this message because you are subscribed to the Google Groups "Jenkins Issues" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-issues+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[JIRA] (JENKINS-50601) SSH plugin cannot negotiate
Title: Message Title Devin Nusbaum commented on JENKINS-50601 Re: SSH plugin cannot negotiate Not sure offhand, but I would start with making sure you are running the same version of OpenSSH needs to be updated on the agent and master. See https://www.openssh.com/legacy.html for some options you can pass to OpenSSH to enable legacy key exchange algorithms if you are unable to update. Add Comment This message was sent by Atlassian JIRA (v7.3.0#73011-sha1:3c73d0e) -- You received this message because you are subscribed to the Google Groups "Jenkins Issues" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-issues+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[JIRA] (JENKINS-50601) SSH plugin cannot negotiate
Title: Message Title
Zack Snyder updated an issue
Jenkins / JENKINS-50601
SSH plugin cannot negotiate
Change By:
Zack Snyder
I get following error (from sshd-log on windows) when trying to connect to my windows slave agent with openSSH running:{noformat}1716 18:01:04:153 Unable to negotiate with 192.168.115.188 port 56216: no matching key exchange method found. Their offer: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1 {noformat} Connecting natively, via bash, works without a problem.
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[JIRA] (JENKINS-50601) SSH plugin cannot negotiate
Title: Message Title Zack Snyder created an issue Jenkins / JENKINS-50601 SSH plugin cannot negotiate Issue Type: Bug Assignee: Devin Nusbaum Attachments: system_info_jenkins.txt Components: ssh-agent-plugin, ssh-credentials-plugin, ssh-slaves-plugin Created: 2018-04-05 16:40 Environment: ubuntu x64 server 16.04 Jenkins ver. 2.107.1 ssh slave plugin 1.26 SSH credentials plugin 1.13 Priority: Major Reporter: Zack Snyder I get following error (from sshd-log on windows) when trying to connect to my windows slave agent with openSSH running: 1716 18:01:04:153 Unable to negotiate with 192.168.115.188 port 56216: no matching key exchange method found. Their offer: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
