diff --git a/scripts/health_check.sh b/scripts/health_check.sh
index 143d7c6..50ea9db 100644
--- a/scripts/health_check.sh
+++ b/scripts/health_check.sh
@@ -9,23 +9,23 @@ if [ ${CURRENT_PORT} -eq 8081 ]; then
 elif [ ${CURRENT_PORT} -eq 8082 ]; then
   TARGET_PORT=8081
 else
-  echo "[$NOW_TIME] No WAS is connected to nginx" >> /home/ubuntu/api-server/deploy_err.log
+  echo "[$NOW_TIME] No WAS is connected to nginx"
   exit 1
 fi
 
-echo "[$NOW_TIME] Start health check of WAS at 'http://127.0.0.1:${TARGET_PORT}' ..." >> /home/ubuntu/api-server/deploy.log
+echo "[$NOW_TIME] Start health check of WAS at 'http://127.0.0.1:${TARGET_PORT}' ..."
 
 for RETRY_COUNT in 1 2 3 4 5 6 7 8 9 10
 do
-  echo "[$NOW_TIME] #${RETRY_COUNT} trying..." >> /home/ubuntu/api-server/deploy.log
+  echo "[$NOW_TIME] #${RETRY_COUNT} trying..."
   RESPONSE_CODE=$(curl -s -o /dev/null -w "%{http_code}" http://127.0.0.1:${TARGET_PORT}/actuator/health)
 
   if [ ${RESPONSE_CODE} -eq 200 ]; then
-    echo "[$NOW_TIME] New WAS successfully running" >> /home/ubuntu/api-server/deploy.log
+    echo "[$NOW_TIME] New WAS successfully running"
     exit 0
   elif [ ${RETRY_COUNT} -eq 10 ]; then
-    echo "[$NOW_TIME] Health check failed." >> /home/ubuntu/api-server/deploy_err.log
+    echo "[$NOW_TIME] Health check failed."
     exit 1
   fi
   sleep 10
-done
\ No newline at end of file
+done
diff --git a/scripts/run_new_was.sh b/scripts/run_new_was.sh
index e84286d..3200ad0 100644
--- a/scripts/run_new_was.sh
+++ b/scripts/run_new_was.sh
@@ -4,29 +4,29 @@ HOST_NAME=$(cat /etc/hostname)
 CURRENT_PORT=$(cat /etc/nginx/conf.d/service-url.inc | grep -Po '[0-9]+' | tail -1)
 TARGET_PORT=0
 
-echo "[$NOW_TIME] Current port of running WAS is ${CURRENT_PORT}." >> /home/ubuntu/api-server/deploy.log
+echo "[$NOW_TIME] Current port of running WAS is ${CURRENT_PORT}."
 
 if [ ${CURRENT_PORT} -eq 8081 ]; then
   TARGET_PORT=8082
 elif [ ${CURRENT_PORT} -eq 8082 ]; then
   TARGET_PORT=8081
 else
-  echo "[$NOW_TIME] No WAS is connected to nginx" >> /home/ubuntu/api-server/deploy.log
+  echo "[$NOW_TIME] No WAS is connected to nginx"
 fi
 
 TARGET_PID=$(lsof -Fp -i TCP:${TARGET_PORT} | grep -Po 'p[0-9]+' | grep -Po '[0-9]+')
 
 if [ ! -z ${TARGET_PID} ]; then
-  echo "[$NOW_TIME] Kill WAS running at ${TARGET_PORT}." >> /home/ubuntu/api-server/deploy.log
+  echo "[$NOW_TIME] Kill WAS running at ${TARGET_PORT}."
   sudo kill ${TARGET_PID}
 fi
 
 if [ ${HOST_NAME} == "core-prod-server" ]; then
-  nohup java -jar -Dserver.port=${TARGET_PORT} -Duser.timezone=Asia/Seoul -Dspring.profiles.active=prod /home/ubuntu/api-server/*.jar >> /home/ubuntu/api-server/deploy.log 2>/home/ubuntu/api-server/deploy_err.log &
-  echo "[$NOW_TIME] Now new WAS runs at ${TARGET_PORT}." >> /home/ubuntu/api-server/deploy.log
+  nohup java -jar -Dserver.port=${TARGET_PORT} -Duser.timezone=Asia/Seoul -Dspring.profiles.active=prod /home/ubuntu/api-server/*.jar &
+  echo "[$NOW_TIME] Now new WAS runs at ${TARGET_PORT}."
   exit 0
 else
-  nohup java -jar -Dserver.port=${TARGET_PORT} -Duser.timezone=Asia/Seoul -Dspring.profiles.active=dev /home/ubuntu/api-server/*.jar >> /home/ubuntu/api-server/deploy.log 2>/home/ubuntu/api-server/deploy_err.log &
-  echo "[$NOW_TIME] Now new WAS runs at ${TARGET_PORT}." >> /home/ubuntu/api-server/deploy.log
+  nohup java -jar -Dserver.port=${TARGET_PORT} -Duser.timezone=Asia/Seoul -Dspring.profiles.active=dev /home/ubuntu/api-server/*.jar &
+  echo "[$NOW_TIME] Now new WAS runs at ${TARGET_PORT}."
   exit 0
 fi
diff --git a/scripts/switch.sh b/scripts/switch.sh
index 4c90c36..59c0c81 100644
--- a/scripts/switch.sh
+++ b/scripts/switch.sh
@@ -3,7 +3,7 @@ NOW_TIME="$(date +%Y)-$(date +%m)-$(date +%d) $(date +%H):$(date +%M):$(date +%S
 CURRENT_PORT=$(cat /etc/nginx/conf.d/service-url.inc | grep -Po '[0-9]+' | tail -1)
 TARGET_PORT=0
 
-echo "[$NOW_TIME] Nginx currently proxies to ${CURRENT_PORT}." >> /home/ubuntu/api-server/deploy.log
+echo "[$NOW_TIME] Nginx currently proxies to ${CURRENT_PORT}."
 
 # Toggle port number
 if [ ${CURRENT_PORT} -eq 8081 ]; then
@@ -11,15 +11,15 @@ if [ ${CURRENT_PORT} -eq 8081 ]; then
 elif [ ${CURRENT_PORT} -eq 8082 ]; then
   TARGET_PORT=8081
 else
-  echo "[$NOW_TIME] No WAS is connected to nginx" >> /home/ubuntu/api-server/deploy.log
+  echo "[$NOW_TIME] No WAS is connected to nginx"
   exit 1
 fi
 
 # Change proxying port into target port
 echo "set \$service_url http://127.0.0.1:${TARGET_PORT};" | sudo tee /etc/nginx/conf.d/service-url.inc
 
-echo "[$NOW_TIME] Now Nginx proxies to ${TARGET_PORT}." >> /home/ubuntu/api-server/deploy.log
+echo "[$NOW_TIME] Now Nginx proxies to ${TARGET_PORT}."
 # Reload nginx
 sudo service nginx reload
 
-echo "[$NOW_TIME] Nginx reloaded." >> /home/ubuntu/api-server/deploy.log
+echo "[$NOW_TIME] Nginx reloaded."