diff --git a/.github/workflows/CD.yml b/.github/workflows/CD.yml
index 2a53393f..679630e4 100644
--- a/.github/workflows/CD.yml
+++ b/.github/workflows/CD.yml
@@ -17,6 +17,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+      - uses: actions/checkout@v3
       #jdk 세팅
       - name: Set up JDK 17
         uses: actions/setup-java@v2
diff --git a/scripts/health-check.sh b/scripts/health-check.sh
new file mode 100644
index 00000000..55863484
--- /dev/null
+++ b/scripts/health-check.sh
@@ -0,0 +1,33 @@
+#!/bin/bash
+
+# Crawl current connected port of WAS
+CURRENT_PORT=$(cat /home/ubuntu/service_url.inc | grep -Po '[0-9]+' | tail -1)
+TARGET_PORT=0
+
+# Toggle port Number
+if [ ${CURRENT_PORT} -eq 8081 ]; then
+    TARGET_PORT=8082
+elif [ ${CURRENT_PORT} -eq 8082 ]; then
+    TARGET_PORT=8081
+else
+    echo "> No WAS is connected to nginx"
+    exit 1
+fi
+
+
+echo "> Start health check of WAS at 'http://13.209.202.74:${TARGET_PORT}' ..."
+
+for RETRY_COUNT in 1 2 3 4 5 6 7 8 9 10
+do
+    echo "> #${RETRY_COUNT} trying..."
+    RESPONSE_CODE=$(curl -s -o /dev/null -w "%{http_code}"  http://13.209.202.74:${TARGET_PORT}/api)
+
+    if [ ${RESPONSE_CODE} -eq 200 ]; then
+        echo "> New WAS successfully running"
+        exit 0
+    elif [ ${RETRY_COUNT} -eq 10 ]; then
+        echo "> Health check failed."
+        exit 1
+    fi
+    sleep 10
+done
\ No newline at end of file
diff --git a/scripts/run_new_was.sh b/scripts/run_new_was.sh
new file mode 100644
index 00000000..9f9b3b48
--- /dev/null
+++ b/scripts/run_new_was.sh
@@ -0,0 +1,25 @@
+#!/bin/bash
+
+CURRENT_PORT=$(cat /home/ubuntu/service_url.inc | grep -Po '[0-9]+' | tail -1)
+TARGET_PORT=0
+
+echo "> Current port of running WAS is ${CURRENT_PORT}."
+
+if [ ${CURRENT_PORT} -eq 8081 ]; then
+  TARGET_PORT=8082
+elif [ ${CURRENT_PORT} -eq 8082 ]; then
+  TARGET_PORT=8081
+else
+  echo "> No WAS is connected to nginx"
+fi
+
+TARGET_PID=$(lsof -Fp -i TCP:${TARGET_PORT} | grep -Po 'p[0-9]+' | grep -Po '[0-9]+')
+
+if [ ! -z ${TARGET_PID} ]; then
+  echo "> Kill WAS running at ${TARGET_PORT}."
+  sudo kill ${TARGET_PID}
+fi
+
+nohup java -jar -Dserver.port=${TARGET_PORT} /home/ubuntu/duaily-server/build/libs/* > /home/ubuntu/nohup.out 2>&1 --spring.profiles.active=prod &
+echo "> Now new WAS runs at ${TARGET_PORT}."
+exit 0
\ No newline at end of file
diff --git a/scripts/switch.sh b/scripts/switch.sh
new file mode 100644
index 00000000..5f255e3e
--- /dev/null
+++ b/scripts/switch.sh
@@ -0,0 +1,28 @@
+#!/bin/bash
+
+# Crawl current connected port of WAS
+CURRENT_PORT=$(cat /home/ubuntu/service_url.inc  | grep -Po '[0-9]+' | tail -1)
+TARGET_PORT=0
+
+echo "> Nginx currently proxies to ${CURRENT_PORT}."
+
+# Toggle port number
+if [ ${CURRENT_PORT} -eq 8081 ]; then
+    TARGET_PORT=8082
+elif [ ${CURRENT_PORT} -eq 8082 ]; then
+    TARGET_PORT=8081
+else
+    echo "> No WAS is connected to nginx"
+    exit 1
+fi
+
+# Change proxying port into target port
+echo "set \$service_url http://13.209.202.74:${TARGET_PORT};" | tee /home/ubuntu/service_url.inc
+echo "set \$service_admin_url http://13.209.202.74:${TARGET_PORT}/admin;" | tee /home/ubuntu/service_admin_url.inc
+
+echo "> Now Nginx proxies to ${TARGET_PORT}."
+
+# Reload nginx
+sudo service nginx reload
+
+echo "> Nginx reloaded."
\ No newline at end of file