From: Mark Wooding <mdw@distorted.org.uk>
Date: Wed, 22 Jun 2011 08:13:01 +0000 (+0100)
Subject: ntp: New check for NTP clock condition.
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/rcheck/commitdiff_plain/3e7a8d27e5733c8f5d2fb71d425f16ea63d4bf3e

ntp: New check for NTP clock condition.
---

diff --git a/check.d/ntp b/check.d/ntp
new file mode 100755
index 0000000..68e8ac2
--- /dev/null
+++ b/check.d/ntp
@@ -0,0 +1,20 @@
+#! /bin/sh -e
+
+ntpdc -c peers | {
+  any=nil
+  while read remote local st poll reach delay offset disp; do
+    case "$remote" in
+      \**) ;;
+      *) continue ;;
+    esac
+    awk -v off="$offset" 'BEGIN {
+      if (off < 0) off = -off;
+      if (off >= 0.1) printf "W: absolute time offset %gs worrying\n", off;
+      else if (off >= 0.01) printf "I: absolute time offset %gs concerning\n", off;
+    }'
+    any=t
+  done
+  case $any in
+    nil) echo "W: not sychronized to any peer" ;;
+  esac
+}