Hello, I encounter a bizarre behavior with these the shell module and the new win_shell module.
It appears that, if the execution of the shell command does not produce anything in the standard output, the module considers that it is in failure. In my opinion, this should not be the case. Is this behavior an error or is it voluntary? I can use "ignore_errors: yes" to continue the playbook but it is not very clean. Here are some tasks to illustrate the problem : # ---------------------------------- - name: "Use Case 1" shell: grep "log" /etc/fstab ignore_errors: yes register: shell_result - debug: var=shell_result # ---------------------------------- - name: "Use Case 2" shell: grep "xxx" /etc/fstab ignore_errors: yes register: shell_result - debug: var=shell_result # ---------------------------------- - name: "Use Case 3" shell: grep "log" /etc/fstab > /tmp/test_ansible/use_case_3_result.txt ignore_errors: yes register: shell_result - debug: var=shell_result # ---------------------------------- - name: "Use Case 4" shell: grep "xxx" /etc/fstab > /tmp/test_ansible/use_case_4_result.txt ignore_errors: yes register: shell_result - debug: var=shell_result Here are the results : TASK [Use Case 1] ************************************************************** changed: [lnildt01] TASK [debug] ******************************************************************* ok: [lnildt01] => { "shell_result": { "changed": true, "cmd": "grep \"log\" /etc/fstab", "delta": "0:00:00.003975", "end": "2016-11-17 09:35:15.918729", "rc": 0, "start": "2016-11-17 09:35:15.914754", "stderr": "", "stdout": "/dev/mapper/rootvg-lv_logs /app/logs \text4 defaults 1 2", "stdout_lines": [ "/dev/mapper/rootvg-lv_logs /app/logs \text4 defaults 1 2" ], "warnings": [] } } TASK [Use Case 2] ************************************************************** fatal: [lnildt01]: FAILED! => {"changed": true, "cmd": "grep \"xxx\" /etc/fstab", "delta": "0:00:00.003907", "end": "2016-11-17 09:35:16.234674", "failed": true, "rc": 1, "start": "2016-11-17 09:35:16.230767", "stderr": "", "stdout": "", "stdout_lines": [], "warnings": []} ...ignoring TASK [debug] ******************************************************************* ok: [lnildt01] => { "shell_result": { "changed": true, "cmd": "grep \"xxx\" /etc/fstab", "delta": "0:00:00.003907", "end": "2016-11-17 09:35:16.234674", "failed": true, "rc": 1, "start": "2016-11-17 09:35:16.230767", "stderr": "", "stdout": "", "stdout_lines": [], "warnings": [] } } TASK [Use Case 3] ************************************************************** changed: [lnildt01] TASK [debug] ******************************************************************* ok: [lnildt01] => { "shell_result": { "changed": true, "cmd": "grep \"log\" /etc/fstab > /tmp/test_ansible/use_case_3_result.txt", "delta": "0:00:00.004247", "end": "2016-11-17 09:35:16.547488", "rc": 0, "start": "2016-11-17 09:35:16.543241", "stderr": "", "stdout": "", "stdout_lines": [], "warnings": [] } } TASK [Use Case 4] ************************************************************** fatal: [lnildt01]: FAILED! => {"changed": true, "cmd": "grep \"xxx\" /etc/fstab > /tmp/test_ansible/use_case_4_result.txt", "delta": "0:00:00.004442", "end": "2016-11-17 09:35:16.859715", "failed": true, "rc": 1, "start": "2016-11-17 09:35:16.855273", "stderr": "", "stdout": "", "stdout_lines": [], "warnings": []} ...ignoring TASK [debug] ******************************************************************* ok: [lnildt01] => { "shell_result": { "changed": true, "cmd": "grep \"xxx\" /etc/fstab > /tmp/test_ansible/use_case_4_result.txt", "delta": "0:00:00.004442", "end": "2016-11-17 09:35:16.859715", "failed": true, "rc": 1, "start": "2016-11-17 09:35:16.855273", "stderr": "", "stdout": "", "stdout_lines": [], "warnings": [] } } The tasks "Use Case 2" and "Use Case 4" failed while the shell command was executed correctly. Moreover, in the use case 4, the file /tmp/test_ansible/use_case_4_result.txt was created: the shell command has therefore worked well. NB1: This behavior is identical with the win_shell module for windows hosts. NB2 : I can't downgrade the version of Ansible to test. Regards, Fabrice Perko -- You received this message because you are subscribed to the Google Groups "Ansible Project" group. To unsubscribe from this group and stop receiving emails from it, send an email to ansible-project+unsubscr...@googlegroups.com. To post to this group, send email to ansible-project@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/ansible-project/8f48d5f7-aa1f-4ddd-94c1-8f2eaad85ac4%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.