refactor: use VM_HOST env var instead of hardcoded RAC VM IPs

Replace all hardcoded 192.168.122.x IPs with ${VM_HOST} env var.
VM IP is auto-detected by vm-env.sh via virsh — no manual update
needed when VM IP changes (e.g. new VM deployment).

- .properties files: use Quarkus ${VM_HOST} substitution
- docker-compose: use ${VM_HOST} in commands
- rac.sh: fail-fast with ${VM_HOST:?} instead of silent default
- db-check.py: require ORACLE_HOST, no fallback IP
- .env: remove DB_CONN (set by rac driver)
- vm-env.sh: remove stale IP mismatch validation

Author: rophy

tests/dbz-twin/rac/config/application-logminer-kafka.properties

@@ -13,7 +13,7 @@ debezium.format.key.schemas.enable=false
 
 debezium.source.connector.class=io.debezium.connector.oracle.OracleConnector
 debezium.source.database.connection.adapter=logminer
-debezium.source.database.hostname=192.168.122.130
+debezium.source.database.hostname=${VM_HOST}
 debezium.source.database.port=1521
 debezium.source.database.user=c##dbzuser
 debezium.source.database.password=dbz

tests/dbz-twin/rac/config/application-logminer.properties

@@ -10,7 +10,7 @@ debezium.format.key.schemas.enable=false
 
 debezium.source.connector.class=io.debezium.connector.oracle.OracleConnector
 debezium.source.database.connection.adapter=logminer
-debezium.source.database.hostname=192.168.122.130
+debezium.source.database.hostname=${VM_HOST}
 debezium.source.database.port=1521
 debezium.source.database.user=c##dbzuser
 debezium.source.database.password=dbz

tests/dbz-twin/rac/config/application-olr-kafka.properties

@@ -14,9 +14,9 @@ debezium.format.key.schemas.enable=false
 debezium.source.connector.class=io.debezium.connector.oracle.OracleConnector
 debezium.source.database.connection.adapter=olr
 debezium.source.openlogreplicator.source=ORCLCDB
-debezium.source.openlogreplicator.host=192.168.122.130
+debezium.source.openlogreplicator.host=${VM_HOST}
 debezium.source.openlogreplicator.port=5000
-debezium.source.database.hostname=192.168.122.130
+debezium.source.database.hostname=${VM_HOST}
 debezium.source.database.port=1521
 debezium.source.database.user=c##dbzuser
 debezium.source.database.password=dbz

tests/dbz-twin/rac/config/application-olr.properties

@@ -11,9 +11,9 @@ debezium.format.key.schemas.enable=false
 debezium.source.connector.class=io.debezium.connector.oracle.OracleConnector
 debezium.source.database.connection.adapter=olr
 debezium.source.openlogreplicator.source=ORCLCDB
-debezium.source.openlogreplicator.host=192.168.122.130
+debezium.source.openlogreplicator.host=${VM_HOST}
 debezium.source.openlogreplicator.port=5000
-debezium.source.database.hostname=192.168.122.130
+debezium.source.database.hostname=${VM_HOST}
 debezium.source.database.port=1521
 debezium.source.database.user=c##dbzuser
 debezium.source.database.password=dbz

tests/dbz-twin/rac/db-check.py

@@ -6,7 +6,7 @@
 
 Environment variables:
   SQLITE_DB   — SQLite database path (default: /app/data/fuzz.db)
-  ORACLE_HOST — Oracle host (default: 192.168.122.130)
+  ORACLE_HOST — Oracle host (required, set by fuzz-test.sh from VM_HOST)
   ORACLE_DSN  — Full Oracle DSN (overrides ORACLE_HOST)
 """
 
@@ -314,7 +314,10 @@ def print_results(name, matched, missing, extra, diffs):
 
 def main():
     sqlite_path = os.environ.get('SQLITE_DB', '/app/data/fuzz.db')
-    oracle_host = os.environ.get('ORACLE_HOST', '192.168.122.130')
+    oracle_host = os.environ.get('ORACLE_HOST')
+    if not oracle_host and not os.environ.get('ORACLE_DSN'):
+        print("ERROR: ORACLE_HOST or ORACLE_DSN must be set", file=sys.stderr)
+        sys.exit(1)
     oracle_dsn = os.environ.get('ORACLE_DSN',
                                 f"olr_test/olr_test@{oracle_host}:1521/ORCLPDB")
 

tests/dbz-twin/rac/perf/config/application-logminer.properties

@@ -9,7 +9,7 @@ debezium.format.key.schemas.enable=false
 
 debezium.source.connector.class=io.debezium.connector.oracle.OracleConnector
 debezium.source.database.connection.adapter=logminer
-debezium.source.database.hostname=192.168.122.130
+debezium.source.database.hostname=${VM_HOST}
 debezium.source.database.port=1521
 debezium.source.database.user=c##dbzuser
 debezium.source.database.password=dbz

tests/dbz-twin/rac/perf/config/application-olr.properties

@@ -10,9 +10,9 @@ debezium.format.key.schemas.enable=false
 debezium.source.connector.class=io.debezium.connector.oracle.OracleConnector
 debezium.source.database.connection.adapter=olr
 debezium.source.openlogreplicator.source=ORCLCDB
-debezium.source.openlogreplicator.host=192.168.122.130
+debezium.source.openlogreplicator.host=${VM_HOST}
 debezium.source.openlogreplicator.port=5000
-debezium.source.database.hostname=192.168.122.130
+debezium.source.database.hostname=${VM_HOST}
 debezium.source.database.port=1521
 debezium.source.database.user=c##dbzuser
 debezium.source.database.password=dbz

tests/dbz-twin/rac/perf/config/prometheus.yml

@@ -1,10 +1,12 @@
+# Auto-generated by perf/run.sh — do not edit manually.
+# VM_HOST is substituted at runtime from vm-env.sh.
 global:
   scrape_interval: 5s
 
 scrape_configs:
   - job_name: 'node-exporter'
     static_configs:
-      - targets: ['192.168.122.130:9100']
+      - targets: ['${VM_HOST}:9100']
   - job_name: 'cadvisor'
     static_configs:
-      - targets: ['192.168.122.130:9101']
+      - targets: ['${VM_HOST}:9101']

tests/dbz-twin/rac/perf/docker-compose.yaml

@@ -44,7 +44,7 @@ services:
     # Override with: docker compose run swingbench -uc 8 -rt 01:00.00
     command:
       - "-cs"
-      - "//192.168.122.130:1521/ORCLPDB"
+      - "//${VM_HOST}:1521/ORCLPDB"
       - "-u"
       - "soe"
       - "-p"

tests/environments/rac/.env

@@ -1,3 +1,4 @@
-DB_CONN=olr_test/olr_test@//192.168.122.130:1521/ORCLPDB
+# DB_CONN is set by the rac driver (tests/sql/scripts/drivers/rac.sh)
+# VM_HOST is auto-detected by vm-env.sh
 PDB_NAME=ORCLPDB
 INCLUDE_TAGS=rac