Mapping application written in nodejs.
This application has been installed and tested on Ubuntu 18.04 only. It may or may not work other versions and distros.

• sudo apt install zip
• sudo apt install postgresql-10
• sudo apt install postgresql-10-postgis-2.4
• sudo apt install apache2
• sudo apt install gdal-bin
• sudo apt install libmapnik3.0
• sudo apt install libmapnik-dev

Edit /etc/postgresql/10/main/pg_hba.conf. Look for the following line:

# "local" is for Unix domain socket connections only
local   all             all                                     peer

Replace "peer" with "md5". Save the file and then restart postgresql service with
sudo systemctl restart postgresql

This has been tried and tested with Node 10.16.3. You can install node with nvm
wget -qO- https://raw.githubusercontent.com/nvm-sh/nvm/v0.34.0/install.sh | bash
source ~/.bashrc nvm install v10.16.3
nvm use default
Check the nvm site for latest nvm installation instructions. You are free to choose any mode of installation.

Create a directory for the application. Let us call it app-directory for future reference. Get the source code of nakshajs throught 'git checkout' in this directory. Or, you can download the zipfile from github and unzip it here.

Change to app-directory and then:
npm install --only=production
npm install -g forever

For all of the following steps, switch to app-directory

node cmd/gen_config.js
You will have to give following details when prompted:

• Domain name or IP address from which application will be accessed.
• Name for the database
• Username and password combinations for three different types of roles that need access to database
• Port on which the application will be run

Create database and roles needed for NakshaJS with
sudo su postgres -c 'psql -f db.sql -b'

Create required tables with:
node -r dotenv/config cmd/import_db.js

Run this command to create user account for accessing the application.
node -r dotenv/config cmd/add_user.js

sudo cp apache.vhost.conf /etc/apache2/sites-available/010-nakshajs.conf and then
sudo a2ensite 010-nakshajs.conf

Run following commands to enable the required apache modules.

• sudo a2enmod proxy
• sudo a2enmod proxy_http
• sudo a2enmod rewrite
• sudo a2enmod headers

Start forever: forever start forever.json
Restart apache: sudo systemctl restart apache2

From your browser access the application through the domain-name/ip-address that you gave while generating the config files Use the username/password given while generating the user account