diff --git a/pom.xml b/pom.xml
index 512e459..396ff03 100644
--- a/pom.xml
+++ b/pom.xml
@@ -79,7 +79,14 @@
 		</dependency>
 
 
+		<dependency>
+    		<groupId>net.logstash.logback</groupId>
+    		<artifactId>logstash-logback-encoder</artifactId>
+    		<version>7.0.1</version>
+		</dependency>
+
 
+		
 	</dependencies>
 	<build>
 		<plugins>
diff --git a/src/main/java/com/programming/commentService/controller/CommentController.java b/src/main/java/com/programming/commentService/controller/CommentController.java
index 10a5309..3181b8e 100644
--- a/src/main/java/com/programming/commentService/controller/CommentController.java
+++ b/src/main/java/com/programming/commentService/controller/CommentController.java
@@ -27,6 +27,10 @@
 import org.springframework.web.bind.annotation.RequestBody;
 import lombok.AllArgsConstructor;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.slf4j.MDC;
+
 @RestController
 @RequestMapping("/comment")
 @AllArgsConstructor
@@ -39,11 +43,15 @@ public class CommentController {
 
     private final CommentRepository commentRepository;
 
+    private static final Logger logger = LoggerFactory.getLogger(CommentController.class);
+
     @Autowired
     private CommentService commentService;
 
     @GetMapping("/")
     public String getServiceName() {
+        MDC.put("type", "commentservice");
+        logger.info("Comment Service Start");
         return "Comment Service";
     }
 
@@ -100,6 +108,14 @@ public ResponseEntity<?> uploadComment(@RequestBody Comment comment) {
 
             // Lưu comment đã xử lý vào MongoDB
             Comment savedComment = commentRepository.save(sanitizedComment);
+
+            //ELK
+            MDC.put("type", "commentservice");
+            MDC.put("action", "upload");
+            logger.info("CommentId: " + savedComment.getId());
+            logger.info("VideoId: " + comment.getVideoId());
+            logger.info("UserId: " + comment.getUserId());
+            
             return ResponseEntity.ok(savedComment);
         } catch (Exception e) {
             return ResponseEntity.internalServerError().body(e.getMessage());
diff --git a/src/main/resources/application.properties b/src/main/resources/application.properties
index 34d3127..5d2a2d8 100644
--- a/src/main/resources/application.properties
+++ b/src/main/resources/application.properties
@@ -1,2 +1,5 @@
 spring.kafka.producer.properties.max.request.size=500000000  # Set the maximum request size for producer
 spring.kafka.producer.properties.buffer.memory=1024000000    # Set the buffer memory for producer
+
+# ELK
+logging.config=classpath:logback-spring.xml
\ No newline at end of file
diff --git a/src/main/resources/logback-spring.xml b/src/main/resources/logback-spring.xml
new file mode 100644
index 0000000..4418676
--- /dev/null
+++ b/src/main/resources/logback-spring.xml
@@ -0,0 +1,10 @@
+<configuration>
+    <appender name="LOGSTASH" class="net.logstash.logback.appender.LogstashTcpSocketAppender">
+        <destination>192.168.120.213:5060</destination>
+        <encoder class="net.logstash.logback.encoder.LogstashEncoder">
+        </encoder>
+    </appender>
+    <root level="INFO">
+        <appender-ref ref="LOGSTASH"/>
+    </root>
+</configuration>
\ No newline at end of file