CI: Document the 'all-in-one' layout + small refactoring (#10725)

* Rename aio to all-in-one and document it

ADTM.
Acronyms don't tell much.

* Refactor vm_count in tests provisioning

.gitlab-ci/packet.yml

@@ -31,8 +31,8 @@ packet_cleanup_old:
     - make cleanup-packet
   after_script: []
 
-# The ubuntu20-calico-aio jobs are meant as early stages to prevent running the full CI if something is horribly broken
-packet_ubuntu20-calico-aio:
+# The ubuntu20-calico-all-in-one jobs are meant as early stages to prevent running the full CI if something is horribly broken
+packet_ubuntu20-calico-all-in-one:
   stage: deploy-part1
   extends: .packet_pr
   when: on_success
@@ -41,22 +41,22 @@ packet_ubuntu20-calico-aio:
 
 # ### PR JOBS PART2
 
-packet_ubuntu20-aio-docker:
+packet_ubuntu20-all-in-one-docker:
   stage: deploy-part2
   extends: .packet_pr
   when: on_success
 
-packet_ubuntu20-calico-aio-hardening:
+packet_ubuntu20-calico-all-in-one-hardening:
   stage: deploy-part2
   extends: .packet_pr
   when: on_success
 
-packet_ubuntu22-aio-docker:
+packet_ubuntu22-all-in-one-docker:
   stage: deploy-part2
   extends: .packet_pr
   when: on_success
 
-packet_ubuntu22-calico-aio:
+packet_ubuntu22-calico-all-in-one:
   stage: deploy-part2
   extends: .packet_pr
   when: on_success
@@ -235,7 +235,7 @@ packet_fedora37-calico-swap-selinux:
   extends: .packet_pr
   when: manual
 
-packet_amazon-linux-2-aio:
+packet_amazon-linux-2-all-in-one:
   stage: deploy-part2
   extends: .packet_pr
   when: manual

docs/test_cases.md

 # Node Layouts
 
-There are four node layout types: `default`, `separate`, `ha`, and `scale`.
+There are five node layout types: `default`, `separate`, `ha`, `scale`, and `all-in-one`.
 
 `default` is a non-HA two nodes setup with one separate `kube_node`
 and the `etcd` group merged with the `kube_control_plane`.
@@ -16,6 +16,8 @@ in the Ansible inventory. This helps test TLS certificate generation at scale
 to prevent regressions and profile certain long-running tasks. These nodes are
 never actually deployed, but certificates are generated for them.
 
+`all-in-one` layout use a single node for with `kube_control_plane`, `etcd` and `kube_node` merged.
+
 Note, the canal network plugin deploys flannel as well plus calico policy controller.
 
 ## Test cases

tests/cloud_playbooks/create-gce.yml

@@ -23,7 +23,7 @@
         instance_names: >-
           {%- if mode in ['separate', 'separate-scale', 'ha', 'ha-scale'] -%}
           k8s-{{ test_name }}-1,k8s-{{ test_name }}-2,k8s-{{ test_name }}-3
-          {%- elif mode == 'aio' -%}
+          {%- elif mode == 'all-in-one' -%}
           k8s-{{ test_name }}-1
           {%- else -%}
           k8s-{{ test_name }}-1,k8s-{{ test_name }}-2

tests/cloud_playbooks/roles/packet-ci/defaults/main.yml

@@ -18,7 +18,7 @@ memory_allocation_ratio: 1
 inventory_path: "/tmp/{{ test_name }}/inventory"
 
 # Deployment mode
-mode: aio
+mode: all-in-one
 
 # Cloud init config for each os type
 # distro: fedora -> 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

tests/cloud_playbooks/roles/packet-ci/tasks/main.yml

@@ -3,10 +3,6 @@
 - name: "Include custom vars for ci job: {{ ci_job_name }}"
   include_vars: "../files/{{ ci_job_name }}.yml"
 
-- name: Set VM count needed for CI test_id
-  set_fact:
-    vm_count: "{%- if mode in ['separate', 'separate-scale', 'ha', 'ha-scale', 'ha-recover', 'ha-recover-noquorum'] -%}{{ 3 | int }}{%- elif mode == 'aio' -%}{{ 1 | int }}{%- else -%}{{ 2 | int }}{%- endif -%}"
-
 - name: Cleamup old VMs
   import_tasks: cleanup-old-vms.yml
 

tests/cloud_playbooks/roles/packet-ci/templates/inventory.j2

@@ -33,7 +33,7 @@ instance-2
 
 [etcd]
 instance-1
-{% elif mode == "aio" %}
+{% elif mode == "all-in-one" %}
 [kube_control_plane]
 instance-1
 

tests/cloud_playbooks/roles/packet-ci/vars/main.yml

+---
+_vm_count_dict:
+  separate: 3
+  separate-scale: 3
+  ha: 3
+  ha-scale: 3
+  ha-recover: 3
+  ha-recover-noquorum: 3
+  all-in-one: 1
+  default: 2
+
+vm_count: "{{ _vm_count_dict[mode | d('default')] }}"

tests/files/packet_amazon-linux-2-aio.yml → tests/files/packet_amazon-linux-2-all-in-one.yml

 ---
 # Instance settings
 cloud_image: amazon-linux-2
-mode: aio
+mode: all-in-one

tests/files/packet_ubuntu20-aio-docker.yml → tests/files/packet_ubuntu20-all-in-one-docker.yml

 ---
 # Instance settings
 cloud_image: ubuntu-2004
-mode: aio
+mode: all-in-one
 
 # Kubespray settings
 auto_renew_certificates: true

tests/files/packet_ubuntu20-calico-aio-ansible-2_11.yml

-packet_ubuntu20-calico-aio.yml
\ No newline at end of file

tests/files/packet_ubuntu20-calico-all-in-one-ansible-2_11.yml

+packet_ubuntu20-calico-all-in-one.yml
\ No newline at end of file

tests/files/packet_ubuntu20-calico-aio-hardening.yml → tests/files/packet_ubuntu20-calico-all-in-one-hardening.yml

 ---
 # Instance settings
 cloud_image: ubuntu-2004
-mode: aio
+mode: all-in-one
 
 # Kubespray settings
 auto_renew_certificates: true

tests/files/packet_ubuntu20-calico-aio.yml → tests/files/packet_ubuntu20-calico-all-in-one.yml

 ---
 # Instance settings
 cloud_image: ubuntu-2004
-mode: aio
+mode: all-in-one
 
 # Kubespray settings
 auto_renew_certificates: true

tests/files/packet_ubuntu22-aio-docker.yml → tests/files/packet_ubuntu22-all-in-one-docker.yml

 ---
 # Instance settings
 cloud_image: ubuntu-2204
-mode: aio
+mode: all-in-one
 vm_memory: 1600Mi
 
 # Kubespray settings

tests/files/packet_ubuntu22-calico-aio.yml → tests/files/packet_ubuntu22-calico-all-in-one.yml

 ---
 # Instance settings
 cloud_image: ubuntu-2204
-mode: aio
+mode: all-in-one
 vm_memory: 1600Mi
 
 # Kubespray settings

tests/templates/inventory-gce.j2

 {% set node1 = gce.instance_data[0].name %}
 {{node1}} ansible_ssh_host={{gce.instance_data[0].public_ip}}
-{% if mode != "aio" %}
+{% if mode != "all-in-one" %}
 {% set node2 = gce.instance_data[1].name %}
 {{node2}} ansible_ssh_host={{gce.instance_data[1].public_ip}}
 {% endif %}
@@ -46,7 +46,7 @@
 
 [etcd]
 {{node1}}
-{% elif mode == "aio" %}
+{% elif mode == "all-in-one" %}
 [kube_control_plane]
 {{node1}}