diff --git a/install-mono/README.md b/install-mono/README.md
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+# hdinsight  Install-Mono script-action
+Script action to install Mono (https://www.mono-project.com) on a HDInsight cluster node.
+
+This script can be used to install the default latest stable Mono version (4.8.1) or a choice of Mono version
+passed in as an argument to the script.
+
+The script will uninstall any existing versions of Mono, if different from the one specified.
+
+## Installed Packages
+The following packages are installed:
+* mono-complete
+* ca-certificates-mono
+
+## Installation instructions
+
+1. Create HDInsight cluster (>3.4 version)
+
+2. If running a Storm cluster, Stop SCP.Net services from Ambari on all nodes.
+
+3. Run script action: `install-mono.sh` on this cluster. 
+
+    Go to Azure portal > open cluster blade > open Script Actions tile > click Submit new and follow instructions. The script action is provided in this repository.
+    
+    When you are on the "Submit script action" blade, you will see "Bash script URI" field. You need to make sure that the `install-mono.sh` is stored in an Azure Storage Blob, and make the link public.
+    
+    OR
+    
+    You can just add https://raw.githubusercontent.com/hdinsight/script-actions/master/install-mono/install-mono.sh to "Bash script URI".
+
+    The script installs version 4.8.1 by default.
+    If a custom Mono version is required, users can pass in the version number as the first argument to the script.
+    Example: 
+      * install-mono.sh 4.8.0
+      * install-mono.sh 5.0.1
+
+   The version passed in must be present on the following page, as an available version. Else the script will fail.
+   https://download.mono-project.com/repo/debian/dists/wheezy/snapshots/
+          
+4. Mono is now installed and ready for use.
diff --git a/install-mono/install-mono.bash b/install-mono/install-mono.bash
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+#!/bin/bash
+
+##################################################################
+# Custom action script to install/upgrade Mono
+#  a. Remove any existing version of Mono installed on a node
+#  b. Install specified versioni of Mono (http://www.mono-project.com) on a HDInsight cluster's Node.
+##################################################################
+
+set -e
+
+# Note: Mono version will default to 4.8
+declare MONO_VERSION="4.8.1"
+
+log(){
+    local message="${1}"
+    local current_time=$(date "+%Y.%m.%d-%H.%M.%S")
+    echo "Install-Mono: ${current_time}: ${message}"
+}
+
+validate_installation(){
+    log "Validating Mono installation for target version $1"
+    local MATCH_STR="Mono JIT compiler version $1"
+    log "Validating Mono Version $TARGET_VERSION is installed properly"
+    local INSTALLED_VERSION_STR=$(mono --version 2>&1 | grep -w "Mono JIT compiler version")
+    if [[ $INSTALLED_VERSION_STR != $MATCH_STR* ]] ; then
+        log "Failed to detect mono version $1 on machine."
+        exit 1
+    fi
+    
+    if [ -f /tmp/tlstest.cs ]; then
+        rm -f /tmp/tlstest.cs
+    fi
+    wget https://raw.github.com/mono/mono/master/mcs/class/Mono.Security/Test/tools/tlstest/tlstest.cs -O /tmp/tlstest.cs
+    
+    local CMD="mono /tmp/tlstest.exe https://www.nuget.org"
+    mcs /tmp/tlstest.cs /r:System.dll /r:Mono.Security.dll
+    local RET_VAL=$($CMD 2>&1 | sed '/^\s*$/d')
+    if [[ "$RET_VAL" != "https://www.nuget.org" ]]; then
+        log "Mono validation failed. Result from $CMD: $RET_VAL"
+        exit 1
+    fi
+    log "Successfully validated that Mono is installed correctly"
+}
+
+if [ "$(id -u)" != "0" ]; then
+    log  "This script is supposed to be invoked as root."
+    exit 1
+fi
+
+# Note: It is expected that user's supplying Mono versions validated the version
+# exists under http://download.mono-project.com/repo/debian/wheezy/snapshots folder.
+if [ "$1" != "" ]; then
+    MONO_VERSION="$1"
+fi
+
+log "Target Mono version to install: $MONO_VERSION"
+
+REPO_CHECK_URL="https://download.mono-project.com/repo/debian/dists/wheezy/snapshots/$MONO_VERSION/"
+if  ! curl -s --head  "$REPO_CHECK_URL" | head -n 1 | grep 200 >/dev/null; then
+    log "Mono Version $MONO_VERSION not found at $REPO_CHECK_URL"
+    exit 1
+fi
+log  "Checking for existing Mono version"
+if type "mono" > /dev/null; then
+    INSTALLED_VERSION_STR=$(mono --version 2>&1 | grep -w "Mono JIT compiler version")
+    log  "Installed Version of Mono: ${INSTALLED_VERSION_STR}"
+    
+    MATCH_STR="Mono JIT compiler version $MONO_VERSION "
+    if [[ $INSTALLED_VERSION_STR != $MATCH_STR* ]] ; then
+        log  "Uninstalling current version, before installing target version"
+        apt-get -y remove --purge --auto-remove mono-runtime
+        apt-get -y remove --purge --auto-remove mono-complete
+        apt-get -y remove --purge --auto-remove ca-certificates-mono
+    else
+        log  "Installed version of mono $INSTALLED_VERSION_STR matches target version $MONO_VERSION."
+        validate_installation $MONO_VERSION
+        
+        exit 0
+    fi
+else
+    log  "Mono not found on the system"
+fi
+
+log  "Looking for existing xamarian repo sources"
+if [ -f /etc/apt/sources.list.d/mono-xamarin.list ]; then
+    log  "Removing xamarian repo sources"
+    rm /etc/apt/sources.list.d/mono-xamarin.list
+fi
+log  "Removed existing xamarian repo sources"
+
+log  "Adding Mono GPG keys"
+apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
+
+MONO_RESOURCE_LIST_URL="http://download.mono-project.com/repo/debian wheezy/snapshots/$MONO_VERSION main"
+log  "Adding Mono package resource list $MONO_RESOURCE_LIST_URL"
+echo  "deb $MONO_RESOURCE_LIST_URL" | tee /etc/apt/sources.list.d/mono-xamarin.list
+
+log  "Updating package list"
+apt-get update
+
+log  "Installing mono-complete package"
+apt-get install -y mono-complete
+log  "Installed mono-complete package"
+
+log  "Installing ca-certificates-mono package"
+apt-get install -y ca-certificates-mono
+log  "Installed ca-certificates-mono package"
+
+validate_installation $MONO_VERSION
+
+log  "Finished installing Mono version $MONO_VERSION"
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diff --git a/install-storm-hdfs-extlib/install-storm-hdfs-extlib.bash b/install-storm-hdfs-extlib/install-storm-hdfs-extlib.bash
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+#!/bin/bash
+
+sudo ln -sf /usr/hdp/current/hadoop-client/*.jar /usr/hdp/current/storm-client/extlib/
+sudo ln -sf /usr/hdp/current/hadoop-client/lib/*.jar /usr/hdp/current/storm-client/extlib/
+sudo ln -sf /usr/hdp/current/hadoop-hdfs-client/*.jar /usr/hdp/current/storm-client/extlib/
+sudo ln -sf /usr/hdp/current/hadoop-hdfs-client/lib/*.jar /usr/hdp/current/storm-client/extlib/
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diff --git a/storm-scp/fix-scpwebapi-port.bash b/storm-scp/fix-scpwebapi-port.bash
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+++ b/storm-scp/fix-scpwebapi-port.bash
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+#!/bin/bash
+cp /usr/hdp/current/storm-client/scpwebapi/resources/scpwebapi-humboldt.yaml /usr/hdp/current/storm-client/scpwebapi/resources/scpwebapi-humboldt.yaml.$(date +"%s")
+sed -e "s/scp.webapi.ui.port: 80/scp.webapi.ui.port: 8888/g" /usr/hdp/current/storm-client/scpwebapi/resources/scpwebapi-humboldt.yaml > /tmp/scpwebapi-humboldt.yaml.new
+if [ $? == 0 ]; then
+    cp -f /tmp/scpwebapi-humboldt.yaml.new /usr/hdp/current/storm-client/scpwebapi/resources/scpwebapi-humboldt.yaml
+fi
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