Comments (8)
ajf8
commented on July 17, 2024
1
Reproduced at home on Fedora 34. Compiled and installed master (c23a145), set my shell to /usr/bin/tlog-rec-session. Ansible version below from Fedora 34 RPM but also earlier 2.8.
[alan@fedora tlog]$ ansible --version
ansible 2.9.27
config file = /etc/ansible/ansible.cfg
configured module search path = ['/home/alan/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
ansible python module location = /usr/lib/python3.9/site-packages/ansible
executable location = /usr/bin/ansible
python version = 3.9.4 (default, Apr 6 2021, 00:00:00) [GCC 11.0.1 20210324 (Red Hat 11.0.1-0)]
[alan@fedora tlog]$
Pipelining enabled (ansible.cfg in directory running playbook from)
[alan@fedora ~]$ cat ansible.cfg
[ssh_connection]
pipelining=True
Simple playbook that runs a command and copies a file
[alan@fedora ~]$ cat test.yaml
---
- hosts: all
gather_facts: false
tasks:
- name: run a command
command: dmesg
- name: copy a file
copy:
src: test.yaml
dest: /tmp/test_file.yaml
Run the playbook.
[alan@fedora ~]$ ansible-playbook -l 127.0.0.1, -i 127.0.0.1, test.yaml
PLAY [all] ***********************************************************************************************************************************************************************************************
TASK [run a command] *************************************************************************************************************************************************************************************
[DEPRECATION WARNING]: Distribution fedora 34 on host 127.0.0.1 should use /usr/bin/python3, but is using /usr/bin/python for backward compatibility with prior Ansible releases. A future Ansible
release will default to using the discovered platform python for this host. See https://docs.ansible.com/ansible/2.9/reference_appendices/interpreter_discovery.html for more information. This feature
will be removed in version 2.12. Deprecation warnings can be disabled by setting deprecation_warnings=False in ansible.cfg.
changed: [127.0.0.1]
TASK [copy a file] ***************************************************************************************************************************************************************************************
And it's stuck. Here we can the ansible controller process running, and the connection over local SSH.
root 81444 0.0 0.2 45148 10972 ? Ss 21:11 0:00 \_ sshd: alan [priv]
alan 81447 0.0 0.1 45148 5920 ? S 21:11 0:00 | \_ sshd: alan@pts/1
alan 81448 0.0 0.2 30104 8204 pts/1 Ss+ 21:11 0:00 | \_ -tlog-rec-session
alan 81449 0.0 0.1 17412 5548 pts/2 Ss 21:11 0:00 | \_ -bash
alan 84225 14.8 1.2 132548 51224 pts/2 Sl+ 21:39 0:11 | \_ /usr/bin/python3 /usr/bin/ansible-playbook -l 127.0.0.1, -i 127.0.0.1, test.yaml
alan 84287 0.0 1.0 131508 41668 pts/2 S+ 21:39 0:00 | \_ /usr/bin/python3 /usr/bin/ansible-playbook -l 127.0.0.1, -i 127.0.0.1, test.yaml
alan 84288 0.0 0.1 18740 6392 pts/2 S+ 21:39 0:00 | \_ ssh -C -o ControlMaster=auto -o ControlPersist=60s -o KbdInteractiveAuthentication=no -o PreferredAuthentic
root 84230 0.0 0.2 45148 10856 ? Ss 21:39 0:00 \_ sshd: alan [priv]
alan 84236 0.0 0.1 45416 6488 ? S 21:39 0:00 \_ sshd: alan@notty
alan 84289 0.0 0.1 29976 7844 ? Ss 21:39 0:00 \_ tlog-rec-session -c /bin/sh -c 'echo ~ && sleep 0'
alan 84290 0.0 0.0 0 0 ? Z 21:39 0:00 \_ [sleep] <defunct>
This reproduces what I saw earlier when it was getting stuck specifically on a copy task but some other tasks were running OK. SSH pipelining was enabled. Interestingly, when I remove SSH pipelining, the first command doesn't work either.
[alan@fedora ~]$ rm ansible.cfg
[alan@fedora ~]$ ansible-playbook -l 127.0.0.1, -i 127.0.0.1, test.yaml
PLAY [all] ***********************************************************************************************************************************************************************************************
TASK [run a command] *************************************************************************************************************************************************************************************
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justin-stephenson
commented on July 17, 2024
Hi, thank you for reporting this issue. The https://github.com/Scribery/tlog/releases/tag/v12 release should already include that commit f03ff12 so I'm not exactly sure what is happening. The only difference between v12 and master are CI related things (nothing that would affect tlog functionality)
Reproducer steps with exact package versions would be great.
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ajf8
commented on July 17, 2024
Sorry I guess I have the wrong idea of what the 12 release is :)
I mean this commit from 20 Jan 2021 31f198c
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justin-stephenson
commented on July 17, 2024
Okay then yes f03ff12 is most likely the culprit.
If you can provide a minimal ansible reproducer that would be great.
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justin-stephenson
commented on July 17, 2024
This should be fixed in the latest release v12.1, can you please check it @ajf8 ?
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ajf8
commented on July 17, 2024
Hi @justin-stephenson I've just encountered the same or similar issue on a Ubuntu 20.04 host, using a package built from master a few weeks ago. I'll try to get another reproducer together. To test I was running "dmesg" using ansible in a loop, it got stuck on the 9th iteration. Pipelining enabled.
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justin-stephenson
commented on July 17, 2024
@ajf8 Okay thanks for letting me know, I was hoping this was taken care of once and for all. Do you see it fail frequently? I'll try to reproduce on my end with Fedora/RHEL
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