fix: retry transient Proxmox apply failures

.gitea/workflows/deploy.yml

@@ -154,10 +154,151 @@ jobs:
         if: github.ref == 'refs/heads/main' && github.event_name == 'push'
         working-directory: terraform
         run: |
+          set -euo pipefail
+
+          run_apply() {
+            local log_file="$1"
             terraform apply \
               -var="ssh_public_key=$HOME/.ssh/id_ed25519.pub" \
               -var="ssh_private_key=$HOME/.ssh/id_ed25519" \
-            -auto-approve
+              -auto-approve 2>&1 | tee "${log_file}"
+            return "${PIPESTATUS[0]}"
+          }
+
+          cleanup_untracked_target_vms() {
+            python3 - <<'PY'
+          import os
+          import ssl
+          import subprocess
+          import time
+          import urllib.error
+          import urllib.parse
+          import urllib.request
+
+          endpoint = os.environ["TF_VAR_proxmox_endpoint"].strip().removesuffix("/api2/json").rstrip("/")
+          token_id = os.environ["TF_VAR_proxmox_api_token_id"]
+          token_secret = os.environ["TF_VAR_proxmox_api_token_secret"]
+          insecure = os.environ.get("TF_VAR_proxmox_insecure", "false").lower() == "true"
+          node = "flex"
+          storage = "Flash"
+          context = ssl._create_unverified_context() if insecure else None
+          headers = {"Authorization": f"PVEAPIToken={token_id}={token_secret}"}
+          targets = {
+              'proxmox_virtual_environment_vm.nodes["k8s-cluster-cp-1"]': (200, "k8s-cluster-cp-1"),
+              'proxmox_virtual_environment_vm.nodes["k8s-cluster-cp-2"]': (201, "k8s-cluster-cp-2"),
+              'proxmox_virtual_environment_vm.nodes["k8s-cluster-cp-3"]': (202, "k8s-cluster-cp-3"),
+              'proxmox_virtual_environment_vm.nodes["k8s-cluster-worker-1"]': (210, "k8s-cluster-worker-1"),
+              'proxmox_virtual_environment_vm.nodes["k8s-cluster-worker-2"]': (211, "k8s-cluster-worker-2"),
+              'proxmox_virtual_environment_vm.nodes["k8s-cluster-worker-3"]': (212, "k8s-cluster-worker-3"),
+              'proxmox_virtual_environment_vm.nodes["k8s-cluster-worker-4"]': (213, "k8s-cluster-worker-4"),
+              'proxmox_virtual_environment_vm.nodes["k8s-cluster-worker-5"]': (214, "k8s-cluster-worker-5"),
+          }
+
+          def request(method, path, data=None):
+              body = None
+              req_headers = dict(headers)
+              if data is not None:
+                  body = urllib.parse.urlencode(data).encode()
+                  req_headers["Content-Type"] = "application/x-www-form-urlencoded"
+              req = urllib.request.Request(
+                  f"{endpoint}/api2/json{path}",
+                  method=method,
+                  headers=req_headers,
+                  data=body,
+              )
+              with urllib.request.urlopen(req, context=context, timeout=60) as resp:
+                  return resp.read()
+
+          def vm_status(vmid):
+              try:
+                  request("GET", f"/nodes/{node}/qemu/{vmid}/status/current")
+                  return True
+              except urllib.error.HTTPError as err:
+                  if err.code == 404 or (err.code == 500 and "conf' does not exist" in err.reason):
+                      return False
+                  raise
+
+          def vm_config(vmid):
+              try:
+                  raw = request("GET", f"/nodes/{node}/qemu/{vmid}/config")
+              except urllib.error.HTTPError as err:
+                  if err.code == 404 or (err.code == 500 and "conf' does not exist" in err.reason):
+                      return {}
+                  raise
+              import json
+              return json.loads(raw).get("data", {})
+
+          def wait_absent(vmid):
+              for _ in range(60):
+                  if not vm_status(vmid):
+                      return
+                  time.sleep(5)
+              raise RuntimeError(f"VM {vmid} still exists after delete")
+
+          state = set(
+              subprocess.run(
+                  ["terraform", "state", "list"],
+                  check=False,
+                  text=True,
+                  stdout=subprocess.PIPE,
+              ).stdout.splitlines()
+          )
+
+          for address, (vmid, expected_name) in targets.items():
+              if address in state:
+                  continue
+              if not vm_status(vmid):
+                  continue
+
+              config = vm_config(vmid)
+              actual_name = config.get("name")
+              if actual_name != expected_name:
+                  raise RuntimeError(
+                      f"Refusing to delete VM {vmid}: expected name {expected_name!r}, got {actual_name!r}"
+                  )
+
+              print(f"Deleting partial Terraform-untracked VM {vmid} ({expected_name}) before retry")
+              try:
+                  request("POST", f"/nodes/{node}/qemu/{vmid}/status/stop")
+                  time.sleep(10)
+              except urllib.error.HTTPError as err:
+                  if err.code not in (400, 500):
+                      raise
+
+              request(
+                  "DELETE",
+                  f"/nodes/{node}/qemu/{vmid}",
+                  {"purge": "1", "destroy-unreferenced-disks": "1"},
+              )
+              wait_absent(vmid)
+
+              volume = urllib.parse.quote(f"{storage}:vm-{vmid}-cloudinit", safe="")
+              try:
+                  request("DELETE", f"/nodes/{node}/storage/{storage}/content/{volume}")
+              except urllib.error.HTTPError as err:
+                  if err.code != 404:
+                      raise
+          PY
+          }
+
+          for attempt in 1 2 3; do
+            log_file="/tmp/terraform-apply-${attempt}.log"
+            if run_apply "${log_file}"; then
+              exit 0
+            fi
+
+            if [ "${attempt}" = "3" ]; then
+              exit 1
+            fi
+
+            if ! grep -Eq 'HTTP 596|Broken pipe|disk update fails' "${log_file}"; then
+              exit 1
+            fi
+
+            echo "Terraform apply hit transient Proxmox API failure; cleaning partial VM creates before retry ${attempt}/2"
+            cleanup_untracked_target_vms
+            sleep 20
+          done
 
       - name: Save Terraform Outputs
         if: github.ref == 'refs/heads/main' && github.event_name == 'push'