diff --git a/Linux/Powershell/Keepalived/sync_nginx.sh b/Linux/Powershell/Keepalived/sync_nginx.sh
new file mode 100644
index 0000000..f59273b
--- /dev/null
+++ b/Linux/Powershell/Keepalived/sync_nginx.sh
@@ -0,0 +1,45 @@
+#!/bin/bash
+KEYPATH="/root/.ssh/reverseproxy2"
+REMOTEHOST="reverseproxy-2.domaine"
+
+
+# La synchro se fait par une récupération depuis le backup de master.
+# Si keepalived est master, on ne fait pas de synchro
+STATE=`/bin/snmpget -v2c -c public 127.0.0.1 KEEPALIVED-MIB::vrrpInstanceState.1 | /bin/sed -Er 's/(.*)INTEGER: (.*)\(([0-9])\)/\2/g'`
+echo "State : ${STATE}"
+if [[ "$STATE" == "master" ]]; then
+ echo "Master : No sync"
+ exit 2
+fi
+
+# Si keepalived est down, on ne fait pas de synchro (maintenance)
+systemctl is-active --quiet keepalived
+if [ $? -ne 0 ]; then
+  echo "Keepalived down : no sync"
+  exit 0
+fi
+echo "Run sync nginx"
+RSYNCNGINX=$(/bin/rsync -e "ssh -i $KEYPATH" -aiuh root@$REMOTEHOST:/etc/nginx/ /etc/nginx)
+if [ $? -eq 0 ]; then
+
+echo "Run sync Let's Encrypt'"
+ RSYNCLE=$(/bin/rsync -e "ssh -i $KEYPATH" -aiuh root@$REMOTEHOST:/etc/letsencrypt/ /etc/letsencrypt)
+else 
+ exit 3
+fi
+
+if [ $? -eq 0 ]; then 
+ echo "Run sync www"
+ RSYNCWWW=$(/bin/rsync -e "ssh -i $KEYPATH" -aiuh root@$REMOTEHOST:/var/www/ /var/www)
+else
+ exit 2
+fi
+ 
+if [ $? -eq 0 ]; then 
+  if [ -n "${RSYNCNGINX}" ] || [ -n "${RSYNCWWW}" ]; then
+     /usr/sbin/nginx -s reload
+     echo "reloaded."
+  fi
+else
+  exit 1
+fi
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