Difference between revisions of "ansible loop fail"
From thelinuxwiki
(Created page with " <source lang="yaml"> - name: example play showing common loop/list error hosts: localhost gather_facts: false tasks: - name: set var1 set_fact: var1: "foo,b...") |
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| + | Problem: loops were failing when trying to pass a variable with something like "foo,bar" in it. This is just a string with a comma in it. | ||
| + | ansible error: Invalid data passed to 'loop', it requires a list | ||
| + | |||
| + | Solution: enscapsulate with square brackets [ ] and quotes around individual elements. | ||
| + | |||
| + | example: | ||
| + | |||
| + | ["foo","bar"] | ||
| + | |||
| + | |||
| + | == Example Play == | ||
<source lang="yaml"> | <source lang="yaml"> | ||
| Line 32: | Line 43: | ||
loop: "{{ var1 }}" | loop: "{{ var1 }}" | ||
| − | $ ansible-playbook example_list.yml | + | $ '''ansible-playbook example_list.yml''' |
PLAY [localhost] ******************************************************************************************************* | PLAY [localhost] ******************************************************************************************************* | ||
Revision as of 21:29, 16 April 2025
Problem: loops were failing when trying to pass a variable with something like "foo,bar" in it. This is just a string with a comma in it.
ansible error: Invalid data passed to 'loop', it requires a list
Solution: enscapsulate with square brackets [ ] and quotes around individual elements.
example:
["foo","bar"]
Example Play
- name: example play showing common loop/list error hosts: localhost gather_facts: false tasks: - name: set var1 set_fact: var1: "foo,bar" - name: set var2 set_fact: var2: ["foo","bar"] - name: output var1 type debug: msg: "{{ var1 | type_debug }}" - name: output var2 type debug: msg: "{{ var2 | type_debug }}" - name: try to loop var2 debug: msg: "{{ item }}" loop: "{{ var2 }}" - name: try to loop var1 debug: msg: "{{ item }}" loop: "{{ var1 }}" $ '''ansible-playbook example_list.yml''' PLAY [localhost] ******************************************************************************************************* TASK [set var1] ******************************************************************************************************** ok: [localhost] TASK [set var2] ******************************************************************************************************** ok: [localhost] TASK [output var1 type] ************************************************************************************************ ok: [localhost] => { "msg": "AnsibleUnicode" } TASK [output var2 type] ************************************************************************************************ ok: [localhost] => { "msg": "list" } TASK [try to loop var2] ************************************************************************************************ ok: [localhost] => (item=foo) => { "msg": "foo" } ok: [localhost] => (item=bar) => { "msg": "bar" } TASK [try to loop var1] ************************************************************************************************ fatal: [localhost]: FAILED! => {"msg": "Invalid data passed to 'loop', it requires a list, got this instead: foo,bar. Hint: If you passed a list/dict of just one element, try adding wantlist=True to your lookup invocation or use q/query instead of lookup."} PLAY RECAP ************************************************************************************************************* localhost : ok=5 changed=0 unreachable=0 failed=1 skipped=0 rescued=0 ignored=0
