deploy: 무중단배포의 안정성을 위한 health check 추가

build.gradle

@@ -33,6 +33,7 @@ dependencies {
     annotationProcessor 'org.projectlombok:lombok'
     testImplementation 'org.springframework.boot:spring-boot-starter-test'
     testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+    implementation 'org.springframework.boot:spring-boot-starter-actuator'
 }
 
 tasks.named('test') {

k8s/deployment.yaml.template

@@ -20,6 +20,27 @@ spec:
           imagePullPolicy: Always
           ports:
             - containerPort: 8080
+          resources:
+            requests:
+              memory: "512Mi"
+              cpu: "500m"
+            limits:
+              memory: "1Gi"
+              cpu: "1"
+          readinessProbe:
+            httpGet:
+              path: /actuator/health
+              port: 8080
+            initialDelaySeconds: 5
+            periodSeconds: 10
+            failureThreshold: 3
+          livenessProbe:
+            httpGet:
+              path: /actuator/health
+              port: 8080
+            initialDelaySeconds: 15
+            periodSeconds: 20
+            failureThreshold: 3
   strategy:
     type: RollingUpdate
     rollingUpdate:

src/main/java/com/knu/algo_hive/common/controller/testController.java

@@ -9,11 +9,11 @@ public class testController {
 
     @GetMapping("/api")
     public ResponseEntity<String> mainPage() {
-        return ResponseEntity.ok().body("test2");
+        return ResponseEntity.ok().body("test3");
     }
 
     @GetMapping("/api/oh")
     public ResponseEntity<String> sidePage() {
-        return ResponseEntity.ok().body("new test3");
+        return ResponseEntity.ok().body("new test4");
     }
 }