Installation of the lexique server

% Time-stamp: <2019-11-20 08:20:13 christophe@pallier.org>

The interactive apps on www.lexique.org are programmed in RShiny. Their source code is in http://www.github.com/chrplr/openlexicon/apps

After following the instructions below, it is enough to do a ``git clone https://github.com/chrplr/openlexicon.git shiny-server` in the home directory on the server to get it up an running.

(Note: the files containing the lexical datasets must be installed at the locations described in the .json files located in datasets-info/_json. At lexique.org, we installed the atabases in /var/www/databases)

Shiny server

Here, we explain how to deploy a shiny server on a Ubuntu 18.04 Linux server.

The following commands must be executed on the computer that will be used as the server.

Installation of R

sudo apt install -y apt-transport-https software-properties-common
sudo apt install -y build-essential

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E298A3A825C0D65DFD57CBB651716619E084DAB9

sudo add-apt-repository 'deb https://cloud.r-project.org/bin/linux/ubuntu bionic-cran35/'

sudo apt update
sudo apt install -y r-base

Installaion of RShiny and Shiny server

Following the instructions at https://www.rstudio.com/products/shiny/download-server/

sudo su - -c "R -e \"install.packages('shiny', repos='http://cran.rstudio.com/')\""
sudo su - -c "R -e \"install.packages('DT','rmarkdown')\""

sudo apt-get install -y gdebi-core
sudo wget https://download3.rstudio.org/ubuntu-14.04/x86_64/shiny-server-1.5.9.923-amd64.deb
sudo gdebi shiny-server-1.5.9.923-amd64.deb

You can run the server by accessing http://servername:3838 where servername it the name or the IP address of your server. For a local installation, it would be localhost.

If you want to setup the server main page (http://servername) to point on rshiny, you need to edit /etc/shiny-server/shiny-server.conf to modify the port from 3838 to 80

nano /etc/shiny-server/shiny-server.conf  # change port from 3838 to 80
systemctl restart shiny-server

Add the openlexicon shiny apps to the shiny-server

Execute:

cd 
git clone https://github.com/chrplr/openlexicon.git shiny-server
cd shiny-server/

Edit /etc/shiny-server/shiny-server.conf:

server {
listen 3838;

# For root shiny server (in shinyapps user home folder)
location / {

# The shiny-server process would run by user `chrplr`
run_as chrplr;

# Save logs here
log_dir /var/log/shiny-server;

# Path to shiny server for separate apps
site_dir /home/chrplr/shiny-server;

# List contents of a (non-Shiny-App) directory when clients visit corresponding URIs
directory_index on;
}

# Allow users to host their own apps in `~/ShinyApps`
location /users {
  run_as :HOME_USER:;
  user_dirs;
 }
}

proxying shiny server through nginx

If you use a web server like apache2 or nginx, you can configure them to proxy the shiny-server. For nginx, for example, I added the following inside the http directive in /etc/nginx/nginx.conf

 map $http_upgrade $connection_upgrade {
     default upgrade;
     ''      close;
 }

  server {
     listen 80;

     rewrite ^/shiny$ $scheme://$http_host/shiny/ permanent;

     root /var/www/html;
     autoindex on;
 
     index index.html index.htm index.php;
     
     location /shiny/ {
         rewrite ^/shiny/(.*)$ /$1 break;
         proxy_pass http://localhost:3838;
         proxy_redirect / $scheme://$http_host/shiny/;
         proxy_http_version 1.1;
         proxy_set_header Upgrade $http_upgrade;
         proxy_set_header Connection $connection_upgrade;
         proxy_read_timeout 20d;
         proxy_buffering off;
     }


     location ~ \.php$ {
            include snippets/fastcgi-php.conf;
            fastcgi_pass unix:/var/run/php/php7.2-fpm.sock;
     }

     location ~ /\.ht {
            deny all;
     }

     location / {
         root /var/www/html;
         autoindex on;
     }

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