new(roles): add support for arm64 machines

Based on the host machine, the playbook will start VMs with the same architecture.

Signed-off-by: Aldo Lacuku <aldo@lacuku.eu>

group_vars/all/vars.yml

@@ -18,22 +18,25 @@ defaultBaserootfs: "therealbobo/ubuntu-rootfs:23.04"
 # name: the name given to the vm;
 # kernel: reference to an OCI image containing a kernel;
 # rootfs: reference to an OCI image used as base rootfs for the vm.
+# arch: architecture of the kernel and base images. (x86_64/aarch64).
 machines:
-  - {name: "arch-5.18",kernel: "therealbobo/arch-kernel:5.18", rootfs: "therealbobo/arch-image:5.18"}
-  - {name: "arch-6.0",kernel: "therealbobo/arch-kernel:6.0", rootfs: "therealbobo/arch-image:6.0"}
-  - {name: "fedora-38",kernel: "therealbobo/fedora-kernel:38-6.2.9", rootfs: "therealbobo/fedora-image:38-6.2.9"}
-  - {name: "fedora-36",kernel: "therealbobo/fedora-kernel:36-5.17.5", rootfs: "therealbobo/fedora-image:36-5.17.5"}
-  - {name: "fedora-33",kernel: "therealbobo/fedora-kernel:33-5.8.15", rootfs: "therealbobo/fedora-image:33-5.8.15"}
-  - {name: "ubuntu-23.04-6.3.0",kernel: "therealbobo/ubuntu-kernel:23.04-6.3.0", rootfs: "therealbobo/ubuntu-image:23.04-6.3.0"}
-  - {name: "centos-4.18",kernel: "therealbobo/centos-kernel:4.18", rootfs: "therealbobo/centos-image:4.18"}
-  - {name: "centos-5.14",kernel: "therealbobo/centos-kernel:5.14", rootfs: "therealbobo/centos-image:5.14"}
-  - {name: "amz-linux-2023-6.1.34",kernel: "therealbobo/amazonlinux2023-kernel:6.1.34", rootfs: "therealbobo/amazonlinux2023-image:6.1.34"}
-  - {name: "amz-linux-2022-5.15.73",kernel: "therealbobo/amazonlinux2022-kernel:5.15.73", rootfs: "therealbobo/amazonlinux2022-image:5.15.73"}
-  - {name: "amz-linux2-4.19",kernel: "therealbobo/amazonlinux2-kernel:4.19", rootfs: "therealbobo/amazonlinux2-image:4.19"}
-  - {name: "amz-linux2-5.4",kernel: "therealbobo/amazonlinux2-kernel:5.4", rootfs: "therealbobo/amazonlinux2-image:5.4"}
-  - {name: "amz-linux2-5.15",kernel: "therealbobo/amazonlinux2-kernel:5.15", rootfs: "therealbobo/amazonlinux2-image:5.15"}
-  - {name: "oracle-linux-5.15",kernel: "therealbobo/oraclelinux-kernel:5.15", rootfs: "therealbobo/oraclelinux-image:5.15"}
-  - {name: "oracle-linux-5.4",kernel: "therealbobo/oraclelinux-kernel:5.4", rootfs: "therealbobo/oraclelinux-image:5.4"}
+  - {name: "arch-5.18",kernel: "therealbobo/arch-kernel:5.18", rootfs: "therealbobo/arch-image:5.18", arch: "x86_64"}
+  - {name: "arch-6.0",kernel: "therealbobo/arch-kernel:6.0", rootfs: "therealbobo/arch-image:6.0", arch: "x86_64"}
+  - {name: "fedora-38",kernel: "therealbobo/fedora-kernel:38-6.2.9", rootfs: "therealbobo/fedora-image:38-6.2.9", arch: "x86_64"}
+  - {name: "fedora-36",kernel: "therealbobo/fedora-kernel:36-5.17.5", rootfs: "therealbobo/fedora-image:36-5.17.5", arch: "x86_64"}
+  - {name: "fedora-33",kernel: "therealbobo/fedora-kernel:33-5.8.15", rootfs: "therealbobo/fedora-image:33-5.8.15", arch: "x86_64"}
+  - {name: "ubuntu-23.04-6.3.0",kernel: "therealbobo/ubuntu-kernel:23.04-6.3.0", rootfs: "therealbobo/ubuntu-image:23.04-6.3.0", arch: "x86_64"}
+  - {name: "centos-4.18",kernel: "therealbobo/centos-kernel:4.18", rootfs: "therealbobo/centos-image:4.18", arch: "x86_64"}
+  - {name: "centos-5.14",kernel: "therealbobo/centos-kernel:5.14", rootfs: "therealbobo/centos-image:5.14", arch: "x86_64"}
+  - {name: "amz-linux-2023-6.1.34",kernel: "therealbobo/amazonlinux2023-kernel:6.1.34", rootfs: "therealbobo/amazonlinux2023-image:6.1.34", arch: "x86_64"}
+  - {name: "amz-linux-2022-5.15.73",kernel: "therealbobo/amazonlinux2022-kernel:5.15.73", rootfs: "therealbobo/amazonlinux2022-image:5.15.73", arch: "x86_64"}
+  - {name: "amz-linux2-4.19",kernel: "therealbobo/amazonlinux2-kernel:4.19", rootfs: "therealbobo/amazonlinux2-image:4.19", arch: "x86_64"}
+  - {name: "amz-linux2-5.4",kernel: "therealbobo/amazonlinux2-kernel:5.4", rootfs: "therealbobo/amazonlinux2-image:5.4", arch: "x86_64"}
+  - {name: "amz-linux2-5.15",kernel: "therealbobo/amazonlinux2-kernel:5.15", rootfs: "therealbobo/amazonlinux2-image:5.15", arch: "x86_64"}
+  - {name: "oracle-linux-5.15",kernel: "therealbobo/oraclelinux-kernel:5.15", rootfs: "therealbobo/oraclelinux-image:5.15", arch: "x86_64"}
+  - {name: "oracle-linux-5.4",kernel: "therealbobo/oraclelinux-kernel:5.4", rootfs: "therealbobo/oraclelinux-image:5.4", arch: "x86_64"}
+  - {name: "amazonlinux-5.4", kernel: "therealbobo/amazonlinux2-kernel:5.4-arm64", rootfs: "therealbobo/amazonlinux2-image:5.4-arm64", arch: "aarch64"}
+  - {name: "oraclelinux-5.15", kernel: "therealbobo/oraclelinux-kernel:5.15-arm64", rootfs: "therealbobo/oraclelinux-image:5.15-arm64", arch: "aarch64"}
 
 # Kernel that does not support running execve with null argv: `https://github.com/torvalds/linux/commit/dcd46d897adb70d63e025f175a00a89797d31a43`
 # We need to disable the tests calling the execve syscall.
@@ -54,6 +57,9 @@ cpus: 2
 # Memory size in GB.
 memory: 2
 
+# run_id is used to identify all the machines generated by a given run of the playbook.
+run_id: "here-goes-the-id"
+
 #####################
 # SSH configuration #
 #####################

roles/bootstrap/tasks/main.yml

@@ -29,6 +29,8 @@
     dest: "./roles/bootstrap/files/{{ item.name }}.yaml"
   loop: 
     "{{ machines }}"
+  when: item.arch == ansible_facts["architecture"]
+
   delegate_to: localhost
 
 - name: Pull kernel and rootfs OCI images
@@ -38,37 +40,42 @@
         name: "{{ item.kernel }}"
         source: pull
       loop: "{{ machines }}"
+      when: item.arch == ansible_facts["architecture"]
 
     - name: Pull rootfs OCI images
       community.docker.docker_image:
         name: "{{ item.rootfs }}"
         source: pull
       loop: "{{ machines }}"
+      when: item.arch == ansible_facts["architecture"]
 
-- name: Create virtual machines
+- name: Create virtual machines run_id={{ run_id }}
   shell: |
     ignite run --config "./roles/bootstrap/files/{{ item.name }}.yaml" --runtime docker
   loop: "{{ machines }}"
+  when: item.arch == ansible_facts["architecture"]
   become: yes
 
-- name: Wait for the VMs to be running
+- name: Wait for the VMs to be running run_id={{ run_id }}
   shell:
-    cmd: ignite ps -f \{\{.ObjectMeta.Name\}\}={{item.name}},\{\{.Status.Running\}\}=true | wc -l
+    cmd: ignite ps -f \{\{.ObjectMeta.Name\}\}={{item.name}}-{{ run_id }},\{\{.Status.Running\}\}=true | wc -l
   register: result
   until: result.stdout | int == 2
   retries: 5
   delay: 10
   become: yes
   loop: "{{ machines }}"
+  when: item.arch == ansible_facts["architecture"]
 
-- name: Get IP of the VMs and register them in a variable
+- name: Get IP of the VMs and register them in a variable run_id={{ run_id }}
   shell:
-    cmd: ignite ps -f \{\{.ObjectMeta.Name\}\}={{ item.name }},\{\{.Status.Running\}\}=true -t \{\{.Status.Network.IPAddresses\}\} 
+    cmd: ignite ps -f \{\{.ObjectMeta.Name\}\}={{ item.name }}-{{ run_id }},\{\{.Status.Running\}\}=true -t \{\{.Status.Network.IPAddresses\}\} 
   register: machineIps
   become: yes
   failed_when: machineIps.stdout_lines | length != 1
   loop: "{{ machines }}"
-
+  when: item.arch == ansible_facts["architecture"]
+
 - name: Template the inventory.ini.j2 configuration file to invetory.ini
   template:
     src: inventory.ini.j2

roles/bootstrap/templates/ignite-vm.yaml.j2

@@ -2,7 +2,9 @@ apiVersion: ignite.weave.works/v1alpha4
 kind: VM
 metadata:
   # Required, the name of the VM
-  name: {{ item.name }}
+  name: {{ item.name }}-{{ run_id}}
+  labels:
+    run: {{ run_id }}
 spec:
   # Optional, how many vCPUs should be allocated for the VM
   # Default: 1

roles/bootstrap/templates/inventory.ini.j2

@@ -1,5 +1,7 @@
 #this file is autogenerated by the bootstrap role
 [machines]
 {% for result in machineIps.results %}
+{% if "skipped" not in result %}
 {{ result.item.name }} ansible_host={{ result.stdout }} ansible_ssh_private_key_file={{ prv_key_path }}
+{% endif%}
 {% endfor %}

roles/clean-up/tasks/main.yml

@@ -14,24 +14,31 @@
     state: absent
   with_items: "{{ files_to_delete.files }}"
 
-- name: Get name of vms and register them in variables
-  shell:
-    cmd: ignite ps --all -f \{\{.ObjectMeta.Name\}\}={{item.name}} -t \{\{.Name\}\} 
-  register: vms
-  become: yes
-  loop: "{{ machines }}"
 
-- name: Stop machines
-  shell:
-   cmd: ignite kill {{item.1}}
-  become: yes
-  loop: "{{ vms.results|subelements('stdout_lines') }}"
+# We search all the machines created for this run_id.
+# We make sure that all machines are stopped and then delete them.
+- name: Stop running machines and delete them
+  block:
+    - name: Get name of running machines run_id={{ run_id }}
+      shell:
+        cmd: ignite ps --all -f \{\{.Labels.run\}\}={{ run_id }},\{\{.Status.Running\}\}=true -t \{\{.Name\}\}
+      register: vms
+
+    - name: Stop running machines run_id={{ run_id }}
+      shell:
+       cmd: ignite kill {{item}}
+      loop: "{{ vms.stdout_lines }}"
 
-- name: Delete machines
-  shell:
-   cmd: ignite rm {{item.1}}
-  become: yes
-  loop: "{{ vms.results|subelements('stdout_lines') }}"
+    - name: Get name of stopped machines run_id={{ run_id }}
+      shell:
+        cmd: ignite ps --all -f \{\{.Labels.run\}\}={{ run_id }} -t \{\{.Name\}\}
+      register: vms
+
+    - name: Delete machines run_id={{ run_id }}
+      shell:
+       cmd: ignite rm {{ item }}
+      loop: "{{ vms.stdout_lines }}"
+  become: true
 
 # Ignite imports the images from the OCI ones and caches them.
 # If the images change in the remote repository, ignite continues to use
@@ -41,7 +48,7 @@
   block:
     - name: List cached images
       shell:
-       cmd: ignite image ls -q 
+       cmd: ignite images ls | tail +2 | cut -f 1 
       register: images
 
     - name: Remove cached images from ignite
@@ -51,7 +58,7 @@
 
     - name: List cached kernels
       shell:
-       cmd: ignite kernel ls -q 
+       cmd: ignite kernel ls | tail +2 | cut -f 1 
       register: kernels
 
     - name: Remove cached kernels from ignite