add check chrony

Author: Marc Schöchlin

recipe/check_chrony

@@ -0,0 +1,35 @@
+#!/bin/bash
+
+if [ -z "$2" ];then
+  echo "$0 min_servers diff_in_sec"
+fi
+
+min_servers="${1:-3}"
+max_diff="${2:-0.01}"
+
+result="$(chronyc tracking 2>&1)"
+ret="$?"
+if [ "$ret" != "0" ];then
+    echo "ERROR: >>>$result<<<" >&2
+    exit 1
+fi
+
+chronyc -c tracking|awk -F, -v "diff_in_sec=${max_diff}" '{abs_val = ($5 >= 0) ? $5 : -$5; if (abs_val > diff_in_sec){exit 1}else{exit 0}}'
+ret="$?"
+if [ "$ret" != "0" ];then
+   echo "ERROR: time diff to high (>$max_diff)" >&2
+   chronyc tracking >&2
+   exit 2
+fi
+
+chronyc -c sources|awk -F, -v "min_servers=$min_servers" '$2 ~ /\+|*/ {count=count+1}END{if (count >= min_servers){exit 0}else{exit 1}}'
+ret="$?"
+if [ "$ret" != "0" ];then
+   echo "ERROR: not enough active servers (<$min_servers)" >&2
+   chronyc sources >&2
+   exit 2
+fi
+
+echo "OK"
+exit 0
+