# Setting up Moodle using nginx, postgresql and php on a newly installed Ubuntu 20.04 
# All commands are issued as root user, working directory is /root

apt update
apt install joe nginx certbot python3-certbot-nginx postgresql php-common php-fpm \
php-pgsql php-xml php-soap php-curl php-intl php-gd php-zip php-mbstring php-xmlrpc 

ufw default deny incoming; 
ufw default allow outgoing; 
ufw allow OpenSSH;
ufw allow 'Nginx Full';
ufw enable;

joe /etc/nginx/sites-available/default
-----------delete contents and cut and paste the following lines to it -------
server {
    listen 80;
    listen [::]:80;
    root /var/www/html;
    index  index.php index.html index.htm;
    server_name microhope.in;

    # for Moodle
    client_max_body_size       10m;  

    # for PHP7.4 access
    location ~[^/]\.php(/|$) {
        include snippets/fastcgi-php.conf;
        fastcgi_pass unix:/var/run/php/php7.4-fpm.sock;
	fastcgi_read_timeout 600;   
    }
}
-------------------------
systemctl restart nginx

# get the Letsencript TLS Certificate
certbot --nginx -d microhope.in 

To test, connect to  https://microhope.in/index.nginx-debian.html

joe /etc/php/7.4/fpm/php.ini
----------- modify parameters ------
post_max_size = 10M
upload_max_filesize = 10M
max_execution_time = 600
-----------
systemctl restart php7.4-fpm.service

# Set the postgres HBA configuration to allow a connection using IP protocol
joe /etc/postgresql/12/main/pg_hba.conf 
-------- add below # IPv4 local connections-----------
host     moodle        moouser          127.0.0.1/32   password
local    moodle        moouser                         password
---------------
/etc/init.d/postgresql restart

# Become the postgres user to create the moodle database and user.
sudo -su postgres

$ psql
postgres=# create database moodle;
postgres=# create user moouser password 'moo123';
postgres=# grant all on database moodle to moouser;
postgres=# \q
exit


#from the home directory
git clone  -b MOODLE_39_STABLE git://git.moodle.org/moodle.git

cp -r moodle /var/www/html
chmod 777 /var/www/html/moodle     # change this back to 755 after the installation is over
 
mkdir /var/www/moodledata
chown www-data:www-data /var/www/moodledata


To start the installation, connect browser to https://microhope.in/moodle
Follow the instructions