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os:Ubuntu 18.04.3 LTS

# lsb_release -a
LSB Version:	core-9.20170808ubuntu1-noarch:security-9.20170808ubuntu1-noarch
Distributor ID:	Ubuntu
Description:	Ubuntu 18.04.3 LTS
Release:	18.04
Codename:	bionic

Use apt-get to install Nginx. The installer creates a systemd init script that runs Nginx as daemon on system startup. Follow the installation instructions for Ubuntu as follow:

sudo apt update
sudo apt install nginx

 

nginx -v

output

nginx version: nginx/1.14.0 (Ubuntu)
built with OpenSSL 1.1.1  11 Sep 2018
TLS SNI support enabled

 

uninstall  Nginx on Ubuntu 18.04(aliyun)

step 1:

sudo apt-get remove nginx nginx-common # Removes all but config files.

or

sudo apt-get purge nginx nginx-common # Removes everything

step 2:

sudo apt-get autoremove # After using any of the above commands, use this in order to remove dependencies used by nginx which are no longer required.

 

reinstall

To recreate it, first uninstall using purge to remove even configuration files and records:

# Run these commands as your normal login (e.g. "michael")
# Remove any existing versions of nginx
sudo apt-get remove '^nginx.*$'
 
# Setup a sources.list.d file for the nginx repository
cat << 'EOF' | sudo tee /etc/apt/sources.list.d/nginx.list
deb http://nginx.org/packages/ubuntu/ precise nginx
deb-src http://nginx.org/packages/ubuntu/ precise nginx
EOF
 
# Add nginx key
curl http://nginx.org/keys/nginx_signing.key | sudo apt-key add -
 
# install nginx
sudo apt-get update && sudo apt-get -y install nginx

then reinstall:

apt-get install nginx

Host ASP.NET Core on Linux with Nginx

https://docs.microsoft.com/en-us/aspnet/core/host-and-deploy/linux-nginx?view=aspnetcore-3.0