Add inventory role for Linode

custom_scripts/linode_inventory.py

@@ -0,0 +1,82 @@
+#!/usr/bin/env python3
+
+import os
+import sys
+import json
+import requests
+
+API_URL = "https://api.linode.com/v4/linode/instances"
+TOKEN = os.getenv("LINODE_TOKEN")
+
+if not TOKEN:
+    print("ERROR: LINODE_TOKEN environment variable not set", file=sys.stderr)
+    sys.exit(1)
+
+headers = {
+    "Authorization": f"Bearer {TOKEN}",
+    "Content-Type": "application/json"
+}
+
+def get_linode_instances():
+    instances = []
+    page = 1
+    while True:
+        r = requests.get(API_URL, headers=headers, params={"page": page})
+        if r.status_code != 200:
+            print(f"ERROR: Failed to fetch Linodes (status code {r.status_code})", file=sys.stderr)
+            sys.exit(1)
+        data = r.json()
+        instances.extend(data["data"])
+        if not data["pages"] or page >= data["pages"]:
+            break
+        page += 1
+    return instances
+
+def build_inventory():
+    instances = get_linode_instances()
+
+    inventory = {
+        "_meta": {
+            "hostvars": {}
+        }
+    }
+
+    for linode in instances:
+        label = linode["label"]
+        ipv4 = linode["ipv4"][0] if linode["ipv4"] else None
+        region = linode["region"]
+        tags = linode.get("tags", [])
+
+        if not ipv4:
+            continue
+
+        inventory["_meta"]["hostvars"][label] = {
+            "ansible_host": ipv4,
+            "linode_id": linode["id"],
+            "region": region,
+            "tags": tags,
+            "type": linode["type"]
+        }
+
+        # Group by region
+        region_group = f"region_{region}"
+        inventory.setdefault(region_group, {"hosts": []})["hosts"].append(label)
+
+        # Group by tag
+        for tag in tags:
+            tag_group = f"tag_{tag}"
+            inventory.setdefault(tag_group, {"hosts": []})["hosts"].append(label)
+
+    return inventory
+
+def main():
+    if len(sys.argv) == 2 and sys.argv[1] == "--list":
+        print(json.dumps(build_inventory(), indent=2))
+    elif len(sys.argv) == 2 and sys.argv[1] == "--host":
+        print(json.dumps({}))  # Not used
+    else:
+        print("Usage: linode_inventory.py --list", file=sys.stderr)
+        sys.exit(1)
+
+if __name__ == "__main__":
+    main()

playbooks/inventory/linode.yaml

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+---
+- name: Generate Linode inventory file
+  hosts: localhost
+  gather_facts: false
+  roles:
+    - role: inventory/linode
+  vars:
+    linode_token: "{{ lookup('env', 'LINODE_TOKEN') }}"
+

roles/inventory/linode/tasks/main.yaml

@@ -0,0 +1,19 @@
+---
+- name: Fetch Linode instances
+  linode.cloud.linode_instance_info:
+    api_token: "{{ linode_token }}"
+  register: linodes
+
+- name: Build inventory lines
+  set_fact:
+    linode_inventory: |
+      {% for linode in linodes.data %}
+      {{ linode.label }} ansible_host={{ linode.ipv4[0] }} {% for tag in linode.tags %}group_{{ tag }}=true {% endfor %}
+      {% endfor %}
+
+- name: Write dynamic inventory to file
+  copy:
+    dest: /tmp/linode_inventory.ini
+    content: |
+      [all]
+      {{ linode_inventory }}