diff --git a/.gitea/workflows/deploy.yml b/.gitea/workflows/deploy.yml
index 089ed48..c2eb9cd 100644
--- a/.gitea/workflows/deploy.yml
+++ b/.gitea/workflows/deploy.yml
@@ -85,43 +85,40 @@ jobs:
       - name: Restart backend via SSH
         env:
           DEPLOY_KEY: ${{ secrets.DEPLOY_SSH_KEY }}
+          DEPLOY_HOST: 192.168.1.20
         run: |
           mkdir -p ~/.ssh
-          echo "$DEPLOY_KEY" > ~/.ssh/id_deploy
+          printf '%s\n' "$DEPLOY_KEY" > ~/.ssh/id_deploy
           chmod 600 ~/.ssh/id_deploy
-          # Docker 컨테이너 → 호스트: bridge gateway(172.17.0.1) 경유
-          DOCKER_HOST_IP=172.17.0.1
-          ssh-keyscan $DOCKER_HOST_IP >> ~/.ssh/known_hosts 2>/dev/null || true
+          ssh-keyscan -T 5 $DEPLOY_HOST >> ~/.ssh/known_hosts 2>/dev/null || true
 
-          SSH_CMD="ssh -i ~/.ssh/id_deploy -o StrictHostKeyChecking=no root@$DOCKER_HOST_IP"
+          SSH_CMD="ssh -i ~/.ssh/id_deploy -o StrictHostKeyChecking=no -o ConnectTimeout=10 root@$DEPLOY_HOST"
 
           $SSH_CMD bash -s << 'RESTART'
-          set -e
           DEPLOY_DIR=/devdata/services/kcg/backend
           SYSTEMD_DIR=/etc/systemd/system
 
           # systemd 서비스 파일 갱신
-          CHANGED=0
           if [ -f "$DEPLOY_DIR/kcg-backend.service" ] && ! diff -q "$DEPLOY_DIR/kcg-backend.service" "$SYSTEMD_DIR/kcg-backend.service" >/dev/null 2>&1; then
             cp "$DEPLOY_DIR/kcg-backend.service" "$SYSTEMD_DIR/kcg-backend.service"
-            CHANGED=1
+            systemctl daemon-reload
           fi
-          [ "$CHANGED" = "1" ] && systemctl daemon-reload
 
           # 백엔드 재시작
           echo "--- Restarting kcg-backend ---"
           systemctl restart kcg-backend
 
-          # 기동 확인 (최대 30초)
-          for i in $(seq 1 30); do
-            if curl -sf http://localhost:8080/api/aircraft > /dev/null 2>&1; then
-              echo "Backend started successfully (${i}s)"
+          # 기동 확인 (최대 60초)
+          for i in $(seq 1 60); do
+            HTTP=$(curl -s -o /dev/null -w '%{http_code}' http://localhost:8080/api/aircraft 2>/dev/null || echo "000")
+            if [ "$HTTP" = "200" ] || [ "$HTTP" = "401" ] || [ "$HTTP" = "403" ]; then
+              echo "Backend started successfully (${i}s, HTTP $HTTP)"
               exit 0
             fi
             sleep 1
           done
-          echo "WARNING: Startup timeout. Recent logs:"
-          journalctl -u kcg-backend --no-pager -n 20
+          echo "WARNING: Startup timeout"
+          journalctl -u kcg-backend --no-pager -n 10
           exit 1
           RESTART
 
diff --git a/backend/src/main/java/gc/mda/kcg/collector/sensor/PressureCollector.java b/backend/src/main/java/gc/mda/kcg/collector/sensor/PressureCollector.java
index cb27cff..a95e121 100644
--- a/backend/src/main/java/gc/mda/kcg/collector/sensor/PressureCollector.java
+++ b/backend/src/main/java/gc/mda/kcg/collector/sensor/PressureCollector.java
@@ -91,19 +91,16 @@ public class PressureCollector {
             try {
                 // Open-Meteo 시간 형식: "2026-03-18T07:00" (Z 없음) → Z 추가
                 Instant readingTime = OffsetDateTime.parse(timeStr + "Z").toInstant();
-                try {
-                    repository.save(PressureReading.builder()
-                            .station(station)
-                            .lat(lat)
-                            .lng(lng)
-                            .pressureHpa(pressure)
-                            .readingTime(readingTime)
-                            .collectedAt(now)
-                            .build());
-                    saved++;
-                } catch (Exception ignored) {
-                    // unique constraint violation = 이미 존재, 무시
-                }
+                if (repository.existsByStationAndReadingTime(station, readingTime)) continue;
+                repository.save(PressureReading.builder()
+                        .station(station)
+                        .lat(lat)
+                        .lng(lng)
+                        .pressureHpa(pressure)
+                        .readingTime(readingTime)
+                        .collectedAt(now)
+                        .build());
+                saved++;
             } catch (DateTimeParseException e) {
                 log.debug("기압 시간 파싱 실패: {}", timeStr);
             }
diff --git a/backend/src/main/java/gc/mda/kcg/domain/sensor/PressureReadingRepository.java b/backend/src/main/java/gc/mda/kcg/domain/sensor/PressureReadingRepository.java
index 3c418c0..d6057d4 100644
--- a/backend/src/main/java/gc/mda/kcg/domain/sensor/PressureReadingRepository.java
+++ b/backend/src/main/java/gc/mda/kcg/domain/sensor/PressureReadingRepository.java
@@ -6,6 +6,7 @@ import java.time.Instant;
 import java.util.List;
 
 public interface PressureReadingRepository extends JpaRepository<PressureReading, Long> {
+    boolean existsByStationAndReadingTime(String station, Instant readingTime);
     List<PressureReading> findByStationAndReadingTimeAfterOrderByReadingTimeAsc(String station, Instant since);
     List<PressureReading> findByReadingTimeAfterOrderByReadingTimeAsc(Instant since);
 }