From 1a00de8c13716b4eccf4e4809a4493d9346da05d Mon Sep 17 00:00:00 2001
From: Michael Grote <michael.grote@posteo.de>
Date: Fri, 4 Aug 2023 10:16:54 +0200
Subject: [PATCH] add check if target is reachable

---
 app.sh | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/app.sh b/app.sh
index 4d331ea..61dbce4 100644
--- a/app.sh
+++ b/app.sh
@@ -62,13 +62,18 @@ while true ; do
       echo "Error: can not export $FQDN config"
       exit 2
     fi
-    echo "export $FQDN config..."
-    ssh -n -o StrictHostKeyChecking=no -i "$SSH_KEY_PATH" "${USERNAME}@${FQDN}" "/export show-sensitive" > "config_${FQDN}.rsc" 2> /dev/null
-    # entferne Datumszeile
-    sed -i -r '/^# [0-9]{4}-[0-9]{2}-[0-9]{2}\s[0-9]{2}\:[0-9]{2}\:[0-9]{2}\sby\sRouterOS\s[0-9\s\.]+/d' "config_${FQDN}.rsc"
-    git add "config_${FQDN}.rsc"
-    echo "commit config for ${FQDN} ..."
-    git commit -m "update config_${FQDN}" --quiet > /dev/null
+    # check if target is reachable
+    if ping -c1 -W1 "${FQDN}" > /dev/null; then
+      echo "export $FQDN config..."
+      ssh -n -o StrictHostKeyChecking=no -i "$SSH_KEY_PATH" "${USERNAME}@${FQDN}" "/export show-sensitive" > "config_${FQDN}.rsc" 2> /dev/null
+      # entferne Datumszeile
+      sed -i -r '/^# [0-9]{4}-[0-9]{2}-[0-9]{2}\s[0-9]{2}\:[0-9]{2}\:[0-9]{2}\sby\sRouterOS\s[0-9\s\.]+/d' "config_${FQDN}.rsc"
+      git add "config_${FQDN}.rsc"
+      echo "commit config for ${FQDN} ..."
+      git commit -m "update config_${FQDN}" --quiet > /dev/null
+    else
+      echo "${FQDN} not reachable!"
+    fi
   done <<< "$DEVICES"
 
   echo "push config(s)..."