1 files changed, 21 insertions, 0 deletions
diff --git a/global/overlay/usr/local/bin/ping-check b/global/overlay/usr/local/bin/ping-check
new file mode 100755
index 0000000..57d533c
--- /dev/null
+++ b/global/overlay/usr/local/bin/ping-check
@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+#
+# Ping until reply or MAX_TRIES. One try == 1s.
+#
+
+MAX_TRIES=60
+LOGTAG="sunet_docker_ping_check"
+
+count=1
+until ping -c1 $1 &> /dev/null
+do
+    if [ $count -gt $MAX_TRIES ]
+    then
+        logger -t "$LOGTAG" "No response from $1 after $MAX_TRIES tries."
+        exit 1
+    fi
+    sleep 1
+    count=$[$count+1]
+done
+logger -t "$LOGTAG" "IP lookup of $1 succeeded after $count tries."
+