• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Component/s: cli, configuration-as-code-plugin, core
• Labels:

  None

[JENKINS-68541] CLI over SSH hangs or show warning when a command closes the stdout/stderr

Allan BURDAJEWICZ created issue - 2022-05-16 06:02

Allan BURDAJEWICZ made changes - 2022-05-16 06:18

Summary

Original: CLI over SSH hangs with some command that close the OutputStream

New: CLI over SSH hangs when a command closes the stdout/stderr

Allan BURDAJEWICZ made changes - 2022-05-17 11:06

Summary

Original: CLI over SSH hangs when a command closes the stdout/stderr

New: CLI over SSH hangs or show warning when a command closes the stdout/stderr

Allan BURDAJEWICZ made changes - 2022-05-17 11:07

Description

Original: CLI Commands that close the stdout (OutputStream) hang forever when using SSH. For example the {{export-configuration}} command of the Configuration as Code plugin. {code} java -jar jenkins-cli.jar -s http://allan.cje.com:8081/ -user admin -ssh export-configuration {code} Most likely caused by a bug in SSHD Core and upstream with https://issues.apache.org/jira/browse/SSHD-1257. That will be fixed in SSHD Core 2.9.0, currently unreleased. Though maybe a wrapper in {{CLICommand}} could prevent closure of the {{stdout}}.

New: CLI Commands that close the stdout (OutputStream) hang forever or sometimes show the following warning when using SSH: {code} org.apache.sshd.common.SshException: flush(ChannelOutputStream[ChannelSession[id=0, recipient=0]-ServerSessionImpl[admin@/127.0.0.1:61179]] SSH_MSG_CHANNEL_DATA) length=0 - stream is already closed at org.apache.sshd.common.channel.ChannelOutputStream.flush(ChannelOutputStream.java:169) at org.jenkinsci.main.modules.sshd.AsynchronousCommand$1.run(AsynchronousCommand.java:114) at java.lang.Thread.run(Thread.java:748) {code} For example the {{export-configuration}} command of the Configuration as Code plugin. {code} java -jar jenkins-cli.jar -s http://allan.cje.com:8081/ -user admin -ssh export-configuration {code} Or {code} ssh -l admin -p 2222 export-configuration {code} Most likely caused by a bug in SSHD Core and upstream with https://issues.apache.org/jira/browse/SSHD-1257. That will be fixed in SSHD Core 2.9.0, currently unreleased. Though maybe a wrapper in {{CLICommand}} could prevent closure of the {{stdout}}.

Vincent Latombe made changes - 2022-05-17 12:35

Remote Link

New: This issue links to "SSHD-1257 (Web Link)" [ 27772 ]

Allan BURDAJEWICZ made changes - 2022-05-17 12:42

Assignee

New: Allan BURDAJEWICZ [ allan_burdajewicz ]

Allan BURDAJEWICZ made changes - 2022-05-17 12:42

Status

Original: Open [ 1 ]

New: In Progress [ 3 ]

Allan BURDAJEWICZ made changes - 2022-05-17 12:42

Status

Original: In Progress [ 3 ]

New: In Review [ 10005 ]

Allan BURDAJEWICZ made changes - 2022-05-17 12:42

Remote Link

New: This issue links to "sshd-plugin #74 (Web Link)" [ 27773 ]

Allan BURDAJEWICZ made changes - 2022-05-24 06:14

Released As		New: sshd-plugin:3.237.v883d165a_c1d3
Resolution		New: Fixed [ 1 ]
Status	Original: In Review [ 10005 ]	New: Resolved [ 5 ]

Allan BURDAJEWICZ made changes - 2022-05-25 23:46

Description

Original: CLI Commands that close the stdout (OutputStream) hang forever or sometimes show the following warning when using SSH: {code} org.apache.sshd.common.SshException: flush(ChannelOutputStream[ChannelSession[id=0, recipient=0]-ServerSessionImpl[admin@/127.0.0.1:61179]] SSH_MSG_CHANNEL_DATA) length=0 - stream is already closed at org.apache.sshd.common.channel.ChannelOutputStream.flush(ChannelOutputStream.java:169) at org.jenkinsci.main.modules.sshd.AsynchronousCommand$1.run(AsynchronousCommand.java:114) at java.lang.Thread.run(Thread.java:748) {code} For example the {{export-configuration}} command of the Configuration as Code plugin. {code} java -jar jenkins-cli.jar -s http://allan.cje.com:8081/ -user admin -ssh export-configuration {code} Or {code} ssh -l admin -p 2222 export-configuration {code} Most likely caused by a bug in SSHD Core and upstream with https://issues.apache.org/jira/browse/SSHD-1257. That will be fixed in SSHD Core 2.9.0, currently unreleased. Though maybe a wrapper in {{CLICommand}} could prevent closure of the {{stdout}}.

New: CLI Commands that close the stdout (OutputStream) hang forever or sometimes show the following warning when using SSH: {code} org.apache.sshd.common.SshException: flush(ChannelOutputStream[ChannelSession[id=0, recipient=0]-ServerSessionImpl[admin@/127.0.0.1:61179]] SSH_MSG_CHANNEL_DATA) length=0 - stream is already closed at org.apache.sshd.common.channel.ChannelOutputStream.flush(ChannelOutputStream.java:169) at org.jenkinsci.main.modules.sshd.AsynchronousCommand$1.run(AsynchronousCommand.java:114) at java.lang.Thread.run(Thread.java:748) {code} For example the {{export-configuration}} command of the Configuration as Code plugin. {code} java -jar jenkins-cli.jar -s http://allan.cje.com:8081/ -user admin -ssh export-configuration {code} Or {code} ssh -l admin -p 2222 allan.cje.com export-configuration {code} Most likely caused by a bug in SSHD Core and upstream with https://issues.apache.org/jira/browse/SSHD-1257. That will be fixed in SSHD Core 2.9.0, currently unreleased. Though maybe a wrapper in {{CLICommand}} could prevent closure of the {{stdout}}.