PAD-156: Add custom health check script

Dockerfile

@@ -14,3 +14,7 @@ FROM $BASE
 ### To install the nginx package for opensuse ###
 
 #RUN zypper refresh && zypper install nginx -y
+
+# Add custom health check for two-node liveness
+
+# ADD overlay/files/opt/spectrocloud/bin/check-disk-size.sh /opt/spectrocloud/bin/

overlay/files/opt/spectrocloud/bin/check-disk-size.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+set -e
+
+REQUIRED_FREE_DISK=$1
+
+FREE=$(df -h --output=pcent /var/ | tail -n 1 | tr -d '\% ')
+
+if (( $FREE < $REQUIRED_FREE_DISK )); then
+   echo "Not enough free disk, required: $1. Free: $FREE"
+   exit 1
+fi
+
+echo "Free disk ok, required: $1. Free: $FREE"
+exit 0