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https://issues.apache.org/jira/browse/VCL-1073?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Kurth reassigned VCL-1073:
-------------------------------
Assignee: Andy Kurth
Fix Version/s: 2.5
> Linux.pm::reboot may fail because it doesn't detect broken SSH connection
> during first attempt
> ----------------------------------------------------------------------------------------------
>
> Key: VCL-1073
> URL: https://issues.apache.org/jira/browse/VCL-1073
> Project: VCL
> Issue Type: Bug
> Components: vcld (backend)
> Affects Versions: 2.4.2
> Reporter: Andy Kurth
> Assignee: Andy Kurth
> Fix For: 2.5
>
>
> On occasion, the SSH connection to the machine being rebooted is not
> gracefully terminated after _shutdown -r_ is executed by *Linux.pm::reboot*.
> The SSH command returns *Connection to <VM IP address> closed by remote
> host.*:
> {panel}
> utils.pm:run_ssh_command|4382| ---- WARNING ----
> utils.pm:run_ssh_command|4382| 2017-08-05
> 14:04:32utils.pm:run_ssh_command|4382|attempt 1/3: failed to execute SSH
> command on <VM IP address> (<VM>): '/sbin/shutdown -r now', exit status: 255,
> SSH exits with the exit status of the remote command or with 255 if an error
> occurred, output 2:
> utils.pm:run_ssh_command|4382| ssh output (/sbin/shut...):
> *{color:red}Connection to <VM IP address> closed by remote host.{color}*
> utils.pm:run_ssh_command|4382| ( 0) utils.pm, run_ssh_command (line: 4382)
> utils.pm:run_ssh_command|4382| (-1) OS.pm, execute (line: 3281)
> utils.pm:run_ssh_command|4382| (-2) Linux.pm, reboot (line: 2714)
> utils.pm:run_ssh_command|4382| (-3) inuse.pm, process (line: 123)
> utils.pm:run_ssh_command|4382| (-4) vcld, make_new_child (line: 601)
> utils.pm:run_ssh_command|4382| (-5) vcld, main (line: 353)
> {panel}
> *utils.pm::run\_ssh\_command* then makes 2 more attempts to call _shutdown
> -r_. Both of which expectedly fail because the computer is already in the
> process of rebooting.
> {panel}
> utils.pm:run_ssh_command|4363| ---- WARNING ----
> utils.pm:run_ssh_command|4363| attempt 2/3: failed to execute SSH command on
> <VM IP address> (<VM>): '/sbin/shutdown -r now', exit status: 255, output:
> utils.pm:run_ssh_command|4363| ssh output (/sbin/shut...): ssh: connect to
> host <VM IP address> port 22: Connection refused
> ...
> utils.pm:run_ssh_command|4400| ---- WARNING ----
> utils.pm:run_ssh_command|4400| failed to run SSH command after 3 attempts,
> command: /usr/bin/ssh -i /etc/vcl/vcl.key -o StrictHostKeyChecking=no -o
> UserKnownHostsFile=/dev/null -o ConnectionAttempts=1 -o ConnectTimeout=30 -o
> BatchMode=no -o PasswordAuthentication=no -l root -p 22 -x <VM IP address>
> '/sbin/shutdown -r now' 2>&1, exit status: 255, output:
> utils.pm:run_ssh_command|4400| ssh output (/sbin/shut...): ssh: connect to
> host <VM IP address> port 22: Connection timed out
> ...
> Linux.pm:reboot|2716| ---- WARNING ----
> Linux.pm:reboot|2716| failed to execute command to reboot <VM>
> {panel}
> If the user initiated a reboot, a CRITICAL message is sent:
> {panel}
> inuse.pm:process|123| ---- CRITICAL ----
> inuse.pm:process|123| user requested reboot of <VM> failed
> {panel}
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