include monit configration (#185)

addon_files/redmatic/bin/monit-du.sh

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+FOLDER_PATH=/usr/local/addons/redmatic
+
+REFERENCE_SIZE=$1
+
+#calculate size of folder
+SIZE=$(/usr/bin/du -s $FOLDER_PATH | /usr/bin/awk '{print $1}')
+
+#convert size to MB
+MBSIZE=$((SIZE / 1024))
+
+#output size so Monit can capture it
+echo "$FOLDER_PATH disk $MBSIZE MB usage [$REFERENCE_SIZE MB allowed]"
+
+#provide status code for alert
+if [[ $MBSIZE -gt $(( $REFERENCE_SIZE )) ]]; then
+    exit 1
+fi

addon_files/redmatic/bin/redmatic

@@ -20,11 +20,16 @@ export GIT_EXEC_PATH=/usr/local/addons/redmatic/libexec/git-core
 export NO_UPDATE_NOTIFIER=true
 
 Stop () {
+    if [ -f /usr/bin/monit ]; then
+        /usr/bin/monit -g redmatic unmonitor
+    fi
+
     PSPID=`ps -o pid,comm,args | awk '{if($3 == "node-red" || $4 ~ /node-red/){print $1}}'`
     if [ "$PSPID" != "" ]
     then
         echo -n "Stopping Node-RED: "
         logger -t redmatic -p daemon.info "Stopping Node-RED"
+
         killall redmaticLoader 2>/dev/null
         kill -SIGINT $PSPID 2>/dev/null
         sleep 2
@@ -125,6 +130,10 @@ Start () {
         start-stop-daemon -S -q -b --exec $ADDON_DIR/bin/redmaticLoader
         echo "OK"
     fi
+
+    if [ -f /usr/bin/monit ]; then
+        (sleep 60 ; /usr/bin/monit -g redmatic monitor) &
+    fi
 }
 
 case "$1" in
@@ -162,6 +171,10 @@ case "$1" in
     rm $CONF_DIR/lighttpd/redmatic.conf
     rm $CONF_DIR/rc.d/redmatic
 
+    if [ -f /usr/local/etc/redmatic-monit.cfg ]; then
+        rm /usr/local/etc/redmatic-monit.cfg
+    fi
+
     mount -o remount,rw /
     if [ -f $LIGHTTPD_CONF.orig ]
     then

addon_files/redmatic/etc/monit.cfg

@@ -0,0 +1,22 @@
+CHECK PROCESS redmatic-nodered MATCHING '^node-red\s*$'
+    GROUP redmatic
+    MODE PASSIVE
+    ONREBOOT NOSTART
+
+    if memory usage > 200 MB then alert
+    if cpu > 90% for 2 cycles then alert
+    if disk write rate > 1 MB/s for 2 cycles then alert
+    if failed
+        host localhost
+        port 1880
+        protocol http
+        request "/addons/red/"
+    then alert
+
+CHECK PROGRAM redmatic-diskusage with path "/usr/local/addons/redmatic/bin/monit-du.sh 512"
+    GROUP redmatic
+    MODE PASSIVE
+    ONREBOOT NOSTART
+    every "23 3 * * *"
+    if status != 0 then alert
+

addon_files/update_script

@@ -157,5 +157,12 @@ rm $RED_DIR/libexec/git-core.tar.gz
 touch $CONF_DIR/hm_addons.cfg
 ./update_addon redmatic redmatic.cfg
 
+#
+#   Link monit configuration
+#
+if [ -f /usr/bin/monit ]; then
+    ln -s $RED_DIR/etc/monit.cfg /usr/local/etc/monit-redmatic.cfg
+fi
+
 sync
 exit 0