问题
I have a register with the following contents:
ok: [hostname] => {
"changed": false,
"msg": {
"changed": true,
"cmd": "cd /tmp\n ./status.sh dev",
"delta": "0:00:00.023660",
"end": "2018-11-28 17:46:05.838934",
"rc": 0,
"start": "2018-11-28 17:46:05.815274",
"stderr": "",
"stderr_lines": [],
"stdout": "application is not running. no pid file found",
"stdout_lines": [
"application is not running. no pid file found"
]
}
}
When i see the substring "not" in the register's stdout, i want to trigger another task:
- name: Starting Application As Requested
shell: /tmp/start.sh
when: operation_status.stdout | search('not')
However, i see this error in my triggered task
fatal: [host]: FAILED! => {
"failed": true,
"msg": "The conditional check 'operation_status.stdout | search('not')' failed. The error was: Unexpected templating type error occurred on ({% if operation_status.stdout | search('not') %} True {% else %} False {% endif %}): expected string or buffer\n\nThe error appears to have been in '/path/to/ansible_playbook.yml': line 46, column 5, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n - name: Starting Application As Requested\n ^ here\n"
I only see this error when adding the when condition. Without it, my playbook succeeds. What am i doing wrong here?
Version details:
ansible 2.3.0.0
python version = 2.6.6 (r266:84292, Aug 9 2016, 06:11:56) [GCC 4.4.7 20120313 (Red Hat 4.4.7-17)]
回答1:
This error occurs when the variable (in your case operation_status.stdout
) is undefined. Maybe the status.sh
script doesn't write to stdout when the service is running.
Can you put a debug task and print the value of this variable before the task with "when"?
- name: Debug print value of operation_status.stdout
debug:var=operation_status.stdout
You can also try and modify the when condition to be:
- name: Starting Application As Requested
shell: /tmp/start.sh
when: "'not' in operation_status.stdout"
来源:https://stackoverflow.com/questions/53529978/ansible-unexpected-templating-type-error-expected-string-or-buffer