add check-consul-server-nodes-changed

check-consul-server-nodes-changed/check-consul-server-nodes-changed

@@ -0,0 +1,28 @@
+#!/bin/bash
+
+VERSION=v0.1.1
+
+HOST=127.0.0.1
+PORT=8500
+TEMP_FILE=/var/tmp/mackerel-agent/consul-server-nodes-changed
+
+while getopts h:p:t:v OPT; do
+    case $OPT in
+        h)
+            HOST=$OPTARG;;
+        p)
+            PORT=$OPTARG;;
+        t)
+            TEMP_FILE=$OPTARG;;
+        v)
+            echo $VERSION;
+            exit 0;;
+    esac
+done
+
+PREV_PEERS="$([[ -f $TEMP_FILE ]] && cat $TEMP_FILE)"
+PEERS="$(curl -s http://$HOST:$PORT/v1/status/peers | tee $TEMP_FILE)"
+
+if [[ $PREV_PEERS != $PEERS ]]; then
+    exit 1
+fi