Clean up keepalived routes before Terraform destroy in CI

Add a pre-destroy step that removes stale keepalived routes and VIP
addresses from the host routing table. Runs unconditionally (always)
so Terraform destroy succeeds cleanly after keepalived modifications.

Closes #55

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: szachovy

.github/workflows/tests.yml

@@ -80,6 +80,16 @@ jobs:
         with:
           path: "/tmp/superset_cluster_testsuite.log"
 
+      - name: "Clean up keepalived routes"
+        run: |
+          sudo ip route | grep -E 'proto keepalived|172\.18\.0\.10' | while read -r route; do
+            sudo ip route del $route 2>/dev/null || true
+          done
+          sudo ip addr show | grep -oP '172\.18\.0\.10/\d+' | while read -r addr; do
+            sudo ip addr del "$addr" dev $(ip route get 172.18.0.10 2>/dev/null | grep -oP 'dev \K\S+' || echo lo) 2>/dev/null || true
+          done
+        if: "${{ always() }}"
+
       - name: "Destroy Terraform environment"
         run: "terraform destroy --auto-approve"
         if: "${{ always() }}"

CHANGELOG.md

@@ -16,6 +16,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * CI workflow to build and push service images to GitHub Container Registry on master merge. (#97)
 * Pull-first with local build fallback for container images during deployment. (#97)
 
+### Fixed
+
+* Clean up keepalived routes before Terraform destroy in CI. (#55)
+
 ### Changed
 
 * Completed [ARCHITECTURE.md](./docs/ARCHITECTURE.md) (#93)