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Run the following commands:
1) sudo apt-get update
2) sudo apt-get install -y mongodb
3) modify the following lines in the file: /etc/mongodb.conf

# Where to store the data.
dbpath=/var/lib/mongodb
#where to log
logpath=/var/log/mongodb/mongodb.log
logappend=true
bind_ip = <public_IP_of_your_machine>
port = 27017
# Enable journaling,
http://www.mongodb.org/display/DOCS/Journaling
journal=true

Here, assign bind_ip with public IP of your machine. Specify the dbpath and logpath according to your choice.
4) Make the mongodb user as mongodb. Usually the user will be mongodb by default. You may check it and skip this step if not required:
chown -R mongodb:mongodb /var/lib/mongodb

5) Start mongodb as a service:
sudo service mongodb start
You can check the status after starting mongodb by this command: sudo service mongodb status
6) Export your existing collections from your pre-existing mongodb service (if any):

    sudo mongoexport -db <db_name> -c <collection_name> --out <filename>.json

    [eg sudo mongoexport --db botstore -c BotCategory --out BotCat_bkp.json]
This will export all your collection data into a json file inside the present working directory. Now copy that json file into the machine where you have newly installed mongodb and execute the following command:
   sudo mongoimport --db <db_name> --collection <collection_name> < /path/to/exported_json
   [eg - sudo mongoimport --db botstore --collection BotCategory < /home/487398/BotCat_bkp.json]
This will import all you data into the new mongodb installation.
7) Restart the mongodb service:
    sudo service mongodb restart

Run the below commands to install Java 8 in your Ubuntu machine:
1) sudo apt-get update
2) sudo apt-get install openjdk-8-jre
The binary packages of Elasticsearch have only one dependency: Java. The minimum supported version is Java 8

Now run the below commands to download and install elasticsearch (steps shown for elasticsearch version-5.4.1):
1) curl -L -O{*}https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-5.4.1.deb*
2) sudo dpkg -i elasticsearch-5.4.1.deb
Go inside /etc/elasticsearch folder and open elasticsearch.yml file. Next, edit the following lines in it:
path.data: /home/487398/elasticsearch-5.4.1/data path.logs: /home/487398/elasticsearch-5.4.1/logs network.host: 0.0.0.0
http.port: 9200
data will specify storage location for elasticsearch indices logs will specify storage location of elasticsearch logs
host should be set to 0.0.0.0 for remotely connecting with the installed elasticsearch port will specify on which port elasticsearch is running
Start the elasticsearch by giving the following:
1) sudo /etc/init.d/elasticsearch start
Verify whether elasticsearch is running by the following command:
    curl http://localhost:9200
You should get the following JSON body as response:

{
"name" : "_mykWLH",
"cluster_name" : "elasticsearch", "cluster_uuid" : "vwEaY6m1TJ6HpKuduu9MGQ", "version" : {
"number" : "5.4.1", "build_hash" : "2cfe0df",
"build_date" : "2017-05-29T16:05:51.443Z", "build_snapshot" : false,
"lucene_version" : "6.5.1"
},
"tagline" : "You Know, for Search"
}

Install npm and nodejs by executing the following commands:
1. apt-get install npm
2. apt-get install nodejs

curl -sL https://deb.nodesource.com/setup_8.x | sudo -E bash -

apt-get install nodejs

Clone OnBots from github
1. git clone of chatops respository (git clone –b master https://github.com/CognizantOneDevOps/OnBot.git)
2. Copy $HOME/admin.conf file generated by installing kuberentes inside masterbot folder
3. Update Configurations in OnBots/frameworkservices/masterbot/app/config/config.json
Configuration settings

Map your configuration in config.json file from app/config directory:

ElasticSearch : elasticsearch url
Kubernetes_End_Point : Kubernetes url
MongoDB : mongodb Host
MONITOR_INTERVAL : Time Interval for monitoring bot
MONITOR_RETENSION : mapped to 1 (stores a jsonobj in elasticsearch which has all hubot metrics of a current second)
MONGO_DB_URL : mongodb database name for approval process of bot actions
MONGO_COLL : mongodb collection name for approval process of bot actions
MONGO_COUNTER : mongodb collection name for storing the number of next ticket to be generated
MONGO_TICKETIDGEN : stores the Id of the collection referred by MONGO_COUNTER

APPROVAL_APP_URL: middleware application endpoint which will handle approval flow in mattermost

MONGO_DB_NAME: The database name which has MONGO_COLL and MONGO_COUNTER in it

Certificate_Path: Path to certificate.pem file
PrivateKey_path: Path to key.pem file
https_port: The port number where OnBots will run if started with https
http_port: The port number where OnBots will run if started with http
botCollections: The array of collections that are used by OnBots (["BotStore","Bots","users","MyBots","BotCategory"])

dbName: The mongodb database name which contains botCollections
exposeIP: The IP to which kubernetes services will be exposed (For bots operating with mattermost)

Run Application
1. Install npm modules by running the following from Bots folder
    npm install
2. Run application
    nodejs app
This will run application in specified port