kevinveenbirkenbach/computer-playbook
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feat(filters): add active_docker_container_count filter and use it for fair resource splits

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Compute per-container CPU/RAM shares based on active services (web-/svc-*, enabled=true or undefined). Cast host facts to numbers, add safe min=1, and output compose-ready values. Include robust unit test.

Also: include resource.yml.j2 in base template and minor formatting tidy-up.

https://chatgpt.com/share/68d2d96c-9bf4-800f-bbec-d4f2c0051c06
This commit is contained in:
Kevin Veen-Birkenbach
2025-09-23 21:35:12 +02:00
parent c523d8d8d4
commit ff7b7aeb2d
6 changed files with 284 additions and 2 deletions
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2
roles/docker-container/templates/base.yml.j2
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@@ -7,5 +7,5 @@
{% endif %}
logging:
driver: journald
{{ lookup('template', 'roles/docker-container/templates/resource.yml.j2') | indent(4) }}
{{ "\n" }}

4
roles/docker-container/templates/resource.yml.j2 Normal file
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@@ -0,0 +1,4 @@
cpus: {{ applications | get_app_conf( application_id, [ 'docker', 'services', service_name|default(application_id | get_entity_name ), 'cpus' ] |join('.'), False, RESOURCE_CPUS) }}
mem_reservation: {{ applications | get_app_conf( application_id, [ 'docker', 'services', service_name|default(application_id | get_entity_name ), 'mem_reservation' ] |join('.'), False, RESOURCE_MEM_RESERVATION) }}
mem_limit: {{ applications | get_app_conf( application_id, [ 'docker', 'services', service_name|default(application_id | get_entity_name ), 'mem_limit' ] |join('.'), False, RESOURCE_MEM_LIMIT) }}
pids_limit: {{ applications | get_app_conf( application_id, [ 'docker', 'services', service_name|default(application_id | get_entity_name ), 'pids_limit' ] |join('.'), False, RESOURCE_PIDS_LIMIT) }}