Hi,

What do you mean by "the email to infra-support didn't work"? Email was
rejected? Issue was not created? Something else?
Thanks.

On Wed, Feb 19, 2020 at 11:21 AM Yedidyah Bar David <[email protected]> wrote:

> Forwarding to infra, as the email to infra-support didn't work.
>
> ---------- Forwarded message ---------
> From: Yedidyah Bar David <[email protected]>
> Date: Wed, Feb 19, 2020 at 10:37 AM
> Subject: ssh connection fails after restarting engine VM
> To: <[email protected]>
>
>
> Hi all,
>
> Apparently my jira account was stuck in some state and all my emails
> to infra-support from last years were dropped to /dev/null. Now saw
> another case of a ticket I tried to open a month ago, and considered
> updating it, so spent the time to actually login and see that I can't
> find it anywhere. So copy/pasting below my original email.
>
> The new case is:
>
> https://jenkins.ovirt.org/job/ovirt-system-tests_he-node-ng-suite-4.3/341/
>
> lago.log has:
>
> 2020-02-19 05:10:50,890::log_utils.py::__exit__::611::lago.prefix::INFO::
>  # [Thread-2] lago-he-node-ng-suite-4-3-host-1:  [32mSuccess [0m (in
> 0:00:08)
> 2020-02-19 05:10:52,116::ssh.py::get_ssh_client::373::lago.ssh::DEBUG::SSH
> error connecting to lago-he-node-ng-suite-4-3-engine: No existing
> session
> 2020-02-19
> 05:10:52,116::ssh.py::get_ssh_client::381::lago.ssh::DEBUG::Still
> got 0 tries for lago-he-node-ng-suite-4-3-engine
> 2020-02-19 05:10:53,117::log_utils.py::__exit__::611::lago.ssh::DEBUG::end
> task:e0b52607-6e65-4583-bf43-b615aa901cc7:Get ssh client for
> lago-he-node-ng-suite-4-3-engine:
> 2020-02-19 05:10:53,232::log_utils.py::end_log_task::670::root::ERROR::
>  # [Thread-3] lago-he-node-ng-suite-4-3-engine:  [31mERROR [0m (in
> 0:00:11)
> 2020-02-19 05:10:53,245::log_utils.py::__exit__::607::lago.prefix::DEBUG::
>  File "/usr/lib/python2.7/site-packages/lago/prefix.py", line 1526, in
> _collect_artifacts
>     vm.collect_artifacts(path, ignore_nopath)
>   File "/usr/lib/python2.7/site-packages/lago/plugins/vm.py", line
> 748, in collect_artifacts
>     ignore_nopath=ignore_nopath
>   File "/usr/lib/python2.7/site-packages/lago/plugins/vm.py", line
> 468, in extract_paths
>     return self.provider.extract_paths(paths, *args, **kwargs)
>   File "/usr/lib/python2.7/site-packages/lago/plugins/vm.py", line
> 259, in extract_paths
>     format(self.vm.name())
>
> 2020-02-19
> 05:10:53,245::utils.py::_ret_via_queue::63::lago.utils::DEBUG::Error
> while running thread Thread-3
> Traceback (most recent call last):
>   File "/usr/lib/python2.7/site-packages/lago/utils.py", line 58, in
> _ret_via_queue
>     queue.put({'return': func()})
>   File "/usr/lib/python2.7/site-packages/lago/prefix.py", line 1526,
> in _collect_artifacts
>     vm.collect_artifacts(path, ignore_nopath)
>   File "/usr/lib/python2.7/site-packages/lago/plugins/vm.py", line
> 748, in collect_artifacts
>     ignore_nopath=ignore_nopath
>   File "/usr/lib/python2.7/site-packages/lago/plugins/vm.py", line
> 468, in extract_paths
>     return self.provider.extract_paths(paths, *args, **kwargs)
>   File "/usr/lib/python2.7/site-packages/lago/plugins/vm.py", line
> 259, in extract_paths
>     format(self.vm.name())
> ExtractPathError: Unable to extract paths from
> lago-he-node-ng-suite-4-3-engine: unreachable with SSH
>
> Original email I wrote (and was never received) follows:
>
> Hi all,
>
> See e.g. [1].
> In lago.log [2]:
>
> 2020-01-19
> 05:38:06,052::log_utils.py::__exit__::611::ovirtlago.prefix::INFO::@
> Run test: 008_restart_he_vm.py:  [32mSuccess [0m (in 0:23:27)
> ...
>
> 2020-01-19 05:38:07,680::log_utils.py::__enter__::600::lago.prefix::INFO::
>  # [Thread-3] lago-he-basic-suite-4-3-engine:  [0m [0m
> ...
>
> 2020-01-19
> 05:38:07,686::log_utils.py::__enter__::600::lago.ssh::DEBUG::start
> task:170b4eaa-fbf5-48ca-b81a-4ddf0c9a3bd5:Get ssh client for
> lago-he-basic-suite-4-3-engine:
> ...
>
> 2020-01-19 05:38:12,415::log_utils.py::__exit__::611::lago.prefix::INFO::
>  # [Thread-1] lago-he-basic-suite-4-3-host-0:  [32mSuccess [0m (in
> 0:00:04)
> 2020-01-19 05:38:17,729::ssh.py::get_ssh_client::373::lago.ssh::DEBUG::SSH
> error connecting to lago-he-basic-suite-4-3-engine: No existing
> session
> 2020-01-19
> 05:38:17,730::ssh.py::get_ssh_client::381::lago.ssh::DEBUG::Still
> got 0 tries for lago-he-basic-suite-4-3-engine
> 2020-01-19 05:38:18,731::log_utils.py::__exit__::611::lago.ssh::DEBUG::end
> task:170b4eaa-fbf5-48ca-b81a-4ddf0c9a3bd5:Get ssh client for
> lago-he-basic-suite-4-3-engine:
> 2020-01-19 05:38:18,739::log_utils.py::end_log_task::670::root::ERROR::
>  # [Thread-3] lago-he-basic-suite-4-3-engine:  [31mERROR [0m (in
> 0:00:11)
> ...
> ExtractPathError: Unable to extract paths from
> lago-he-basic-suite-4-3-engine: unreachable with SSH
>
> I wonder what might "No existing session" mean. Perhaps paramiko
> caches the connection, and after the engine VM is restarted it does
> not try to connect again? Or something similar?
>
> Searching the net, [3] looks similar, although I am definitely not
> sure we do not already do this (or similar) in lago.
>
> Anyway, instead of (perhaps) spending time on this, it might be
> better/possible to explicitly expose some "closeconnection" function
> in lago, to be used by OST after such an engine vm restart (or similar
> cases).
>
> [1]
> https://jenkins.ovirt.org/job/ovirt-system-tests_he-basic-suite-4.3/324/
> [2]
> https://jenkins.ovirt.org/job/ovirt-system-tests_he-basic-suite-4.3/324/artifact/exported-artifacts/lago_logs/lago.log
> [3]
> https://stackoverflow.com/questions/57508919/paramiko-ssh-exception-sshexception-no-existing-session
>
> Thanks,
> --
> Didi
>
>
> --
> Didi
> _______________________________________________
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>


-- 
Emil Natan
RHV/CNV DevOps
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