A basic ASP.NET Core App, Dockerized and served with NGINX as proxy server.
License: MIT License
Deploy an ASP.NET Core application with HTTPS & Load balancing using Docker and NGINX as reverse proxy.
To get started:
docker-compose build
docker-compose scale core-app=4
docker-compose upIMPORTANT: Due to NGINX (Free version) limiations, current configuration is set to work with a fixed scale of 4 nodes. With NGINX Plus, additional changes might be applied to scale up and down dynamically.
> docker-compose build
Building core-app
Step 1/8 : FROM microsoft/dotnet
---> c7f0db36c01b
Step 2/8 : RUN printf "deb http://ftp.us.debian.org/debian jessie main\n" >> /etc/apt/sources.list
---> Running in 2a5417c85698
---> f64293d3ff07
Removing intermediate container 2a5417c85698
Step 3/8 : COPY . /app
---> 3e9f828e8286
Removing intermediate container 929481eaec4a
Step 4/8 : WORKDIR /app
---> 093e4c4e4a59
Removing intermediate container 9d1f6927824b
Step 5/8 : RUN dotnet restore
---> Running in 2b8a6898f772
MSBUILD : error MSB1003: Specify a project or solution file. The current working directory does not contain a project or solution file.
ERROR: Service 'core-app' failed to build: The command 'dotnet restore' returned a non-zero code: 1
Hey @sesispla I was just wondering, so considering this is all in a solution together.
Is a Dev supposed to be running all of this within Docker (.NET Core app, Nginx) and debugging it that way? Let's say there were many other layers, micro-services, etc as well, that needed to be setup with Docker.
New-ish to the Docker world, just wondering how one goes about debugging and developing in this workflow. Thanks for any input 👍
What network settings do you have setup for docker? I tried what you have, but it wouldn't load balance as I would expect. I have nginx setup to serve on port 5100 and my dotnet app on 5000.
In my dotnet app's Dockerfile, I expose 5000
and in nginx.conf:
worker_processes 1;
events { worker_connections 1024; }
http {
include mime.types; #include the required MIME types
sendfile on;
# List of application servers
upstream api {
server api1:5000;
server api2:5000;
server api3:5000;
}
# Configuration for the server
server {
# Running port
listen 5100;
# Proxying the connections
location / {
proxy_pass http://api;
proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Host $server_name;
proxy_set_header X-Forwarded-Proto $scheme;
}
}
}
In the logs I have this:
172.22.0.1 - - [01/Nov/2017:17:31:20 +0000] "GET /api/values HTTP/1.1" 502 575 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36"
2017/11/01 17:31:20 [error] 5#5: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 172.22.0.1, server: , request: "GET /api/values HTTP/1.1", upstream: "http://127.0.0.1:5000/api/values", host: "api:5100"
I suspect that the bridged mode networking is causing some issues here.
Hey, @sesispla ! Found this repo very useful, but not working.
dotnet restore
produces next error:
MSBUILD : error MSB1003: Specify a project or solution file. The current working directory does not contain a project or solution file. ERROR: Service 'core-app' failed to build: The command 'dotnet restore' returned a non-zero code: 1
As I found, Microsoft changed project format at last NET Core release and project.json doesn't works anymore.
There is a simple way to fix this:
dotnet migrate
I've did it in my Fork
Best regards,
Sergey
I want to run my asp.net application at nginx server, But I am facing the following error in dev environment
"502 Bad Gateway". Information of docker compose and nginx is given below respectively
`version: '3.4'
services:
webapplication1:
image: ${DOCKER_REGISTRY-}webapplication1
build:
context: .
dockerfile: WebApplication1/Dockerfile
expose:
- "5050"
networks:
- app-network
db1:
image: microsoft/mssql-server-linux
container_name: db1
environment:
SA_PASSWORD: "Thingtrax%1"
ACCEPT_EULA: "Y"
MSSQL_PID: Express
ports:
- "7004:1433"
networks:
app-network:
ipv4_address: 172.27.0.3
web_nginx:
image: nginx
ports:
- "8088:80"
volumes:
- ${APPDATA}/nginx/nginx.conf:/etc/nginx/nginx.conf
depends_on:
- webapplication1
- db1
networks:
- app-network
container_name: web_nginx
restart: always
networks:
app-network:
ipam:
driver: default
config:
- subnet: 172.27.0.0/16`
nginx.conf###
worker_processes 4;
events { worker_connections 1024; }
http {
sendfile on;
upstream webapplication {
server webapplication1:5050;
}
server {
listen 80;
location / {
proxy_pass http://webapplication;
proxy_redirect http://localhost http://webapplication;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Host $server_name;
}
}
}
Please help me to solve this issue
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