Register variables in with_items loop in Ansible playbook
So how can I properly save the results of the operations in variable names based on the list I iterate over?
You don't need to. Variables registered for a task that has with_items
have different format, they contain results for all items.
- hosts: localhost
gather_facts: no
vars:
images:
- foo
- bar
tasks:
- shell: "echo result-{{item}}"
register: "r"
with_items: "{{ images }}"
- debug: var=r
- debug: msg="item.item={{item.item}}, item.stdout={{item.stdout}}, item.changed={{item.changed}}"
with_items: "{{r.results}}"
- debug: msg="Gets printed only if this item changed - {{item}}"
when: item.changed == true
with_items: "{{r.results}}"
soupdiver
Updated on January 28, 2020Comments
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soupdiver over 4 years
I've got a dictionary with different names like
vars: images: - foo - bar
Now, I want to checkout repositories and afterwards build docker images only when the source has changed. Since getting the source and building the image is the same for all items except the name I created the tasks with
with_items: images
and try to register the result with:register: "{{ item }}"
and also tried
register: "src_{{ item }}"
Then I tried the following condition
when: "{{ item }}|changed"
and
when: "{{ src_item }}|changed"
This always results in
fatal: [piggy] => |changed expects a dictionary
So how can I properly save the results of the operations in variable names based on the list I iterate over?
Update: I would like to have something like that:
- hosts: all vars: images: - foo - bar tasks: - name: get src git: repo: [email protected]/repo.git dest: /tmp/repo register: "{{ item }}_src" with_items: images - name: build image shell: "docker build -t repo ." args: chdir: /tmp/repo when: "{{ item }}_src"|changed register: "{{ item }}_image" with_items: images - name: push image shell: "docker push repo" when: "{{ item }}_image"|changed with_items: images
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Ken J over 6 yearsHow do you reference the image names from the results?
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Kashyap over 6 years@KenJ last two tasks show that. If you meant something else plz elaborate. Run it and see the output.