Add nginx-aspnet-mysql implementation (#119)
* Added nginx-aspnet-mysql implementation Signed-off-by: GitHub <noreply@github.com> * Updated nginx+aspnet+mysql README.md Signed-off-by: GitHub <noreply@github.com> * Added db healthcheck Signed-off-by: GitHub <noreply@github.com>
This commit is contained in:
Esteban Solano Granados
GitHub
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## Compose sample application
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### ASP.NET server with an Nginx proxy and a MySQL database
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Project structure:
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```
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.
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├── backend
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│ ├── Dockerfile
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│ ├── aspnet.csproj
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│ └── Program.cs
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├── db
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│ └── password.txt
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├── docker-compose.yaml
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├── proxy
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│ ├── conf
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│ └── Dockerfile
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└── README.md
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```
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[_docker-compose.yaml_](docker-compose.yaml)
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```
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services:
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backend:
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build: backend
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...
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db:
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image: mysql:8.0.19
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...
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proxy:
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build: proxy
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ports:
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- 80:80
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...
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```
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The compose file defines an application with three services `proxy`, `backend` and `db`.
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When deploying the application, docker-compose maps port 80 of the proxy service container to port 80 of the host as specified in the file.
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Make sure port 80 on the host is not already being in use.
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## Deploy with docker-compose
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```
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$ docker-compose up -d
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```
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## Expected result
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Listing containers must show three containers running and the port mapping as below:
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```
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$ docker ps
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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8906b14c5ad1 nginx-aspnet-mysql_proxy "nginx -g 'daemon of…" 2 minutes ago Up 2 minutes 0.0.0.0:80->80/tcp nginx-aspnet-mysql
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l_proxy_1
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13e0e0a7715a nginx-aspnet-mysql_backend "/server" 2 minutes ago Up 2 minutes 8000/tcp nginx-aspnet-mysq
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l_backend_1
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ca8c5975d205 mysql:5.7 "docker-entrypoint.s…" 2 minutes ago Up 2 minutes 3306/tcp, 33060/tcp nginx-aspnet-mysql
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l_db_1
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```
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After the application starts, navigate to `http://localhost:80` in your web browser or run:
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```
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$ curl localhost:80
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["Blog post #0","Blog post #1","Blog post #2","Blog post #3","Blog post #4"]
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```
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Stop and remove the containers
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```
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$ docker-compose down
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```
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FROM mcr.microsoft.com/dotnet/aspnet:5.0 as base
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WORKDIR /app
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FROM mcr.microsoft.com/dotnet/sdk:5.0 AS build
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COPY . /src
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WORKDIR /src
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RUN ls
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RUN dotnet build "aspnetapp.csproj" -c Release -o /app/build
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FROM build AS publish
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RUN dotnet publish "aspnetapp.csproj" -c Release -o /app/publish
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FROM base AS final
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WORKDIR /app
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COPY --from=publish /app/publish .
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ENTRYPOINT ["dotnet", "aspnetapp.dll"]
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using System;
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using System.IO;
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using System.Collections.Generic;
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using System.Threading.Tasks;
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using Microsoft.AspNetCore;
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using Microsoft.AspNetCore.Builder;
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using Microsoft.AspNetCore.Hosting;
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using Microsoft.AspNetCore.Http;
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using Microsoft.AspNetCore.Routing;
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using Microsoft.Extensions.Primitives;
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using MySql.Data;
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using MySql.Data.MySqlClient;
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class Program
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{
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public static void Main(string[] args) => WebHost.CreateDefaultBuilder(args)
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.Configure(async app =>
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{
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app.UseRouting();
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string password = File.ReadAllText("/run/secrets/db-password");
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string connectionString = $"server=db;user=root;database=example;port=3306;password={password}";
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app.UseEndpoints(e =>
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{
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e.MapGet("/", context => {
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using MySqlConnection connection = new MySqlConnection(connectionString);
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var titles = new List<string>();
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try
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{
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Console.WriteLine("Connecting to MySQL...");
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connection.Open();
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string sql = "SELECT title FROM blog";
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using var cmd = new MySqlCommand(sql, connection);
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using MySqlDataReader reader = cmd.ExecuteReader();
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while (reader.Read())
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{
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titles.Add(reader.GetString(0));
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}
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reader.Close();
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}
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catch (Exception ex)
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{
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Console.WriteLine(ex.ToString());
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context.Response.StatusCode = 500;
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return Task.CompletedTask;
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}
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connection.Close();
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context.Response.StatusCode = 200;
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context.Response.WriteAsJsonAsync(titles);
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return Task.CompletedTask;
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});
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});
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Prepare(connectionString);
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}).Build().Run();
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private static void Prepare(string connectionString)
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{
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using MySqlConnection connection = new MySqlConnection(connectionString);
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connection.Open();
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using var transation = connection.BeginTransaction();
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using MySqlCommand cmd1 = new MySqlCommand("DROP TABLE IF EXISTS blog", connection, transation);
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cmd1.ExecuteNonQuery();
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using MySqlCommand cmd2 = new MySqlCommand("CREATE TABLE IF NOT EXISTS blog (id int NOT NULL AUTO_INCREMENT, title varchar(255), PRIMARY KEY (id))", connection, transation);
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cmd2.ExecuteNonQuery();
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for (int i = 0; i < 5; i++)
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{
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using MySqlCommand insertCommand = new MySqlCommand( $"INSERT INTO blog (title) VALUES ('Blog post #{i}');", connection, transation);
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insertCommand.ExecuteNonQuery();
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}
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transation.Commit();
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connection.Close();
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}
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}
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<Project Sdk="Microsoft.NET.Sdk.Web">
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<PropertyGroup>
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<TargetFramework>net5.0</TargetFramework>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="MySql.Data" Version="8.0.23" />
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</ItemGroup>
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</Project>
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@ -0,0 +1 @@
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db-q5n2g
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@ -0,0 +1,41 @@
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version: "3.7"
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services:
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backend:
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build: backend
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secrets:
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- db-password
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depends_on:
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- db
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environment:
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- ASPNETCORE_URLS=http://+:8000
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depends_on:
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db:
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condition: service_healthy
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db:
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image: mysql:8.0.19
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command: '--default-authentication-plugin=mysql_native_password'
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restart: always
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healthcheck:
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test: ["CMD", "mysqladmin", "ping", "-h", "127.0.0.1", "--silent"]
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interval: 3s
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retries: 5
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start_period: 30s
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secrets:
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- db-password
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volumes:
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- db-data:/var/lib/mysql
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environment:
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- MYSQL_DATABASE=example
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- MYSQL_ROOT_PASSWORD_FILE=/run/secrets/db-password
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proxy:
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build: proxy
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ports:
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- 80:80
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depends_on:
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- backend
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volumes:
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db-data:
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secrets:
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db-password:
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file: db/password.txt
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@ -0,0 +1,2 @@
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FROM nginx:1.13-alpine
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COPY conf /etc/nginx/conf.d/default.conf
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server {
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listen 80;
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server_name localhost;
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location / {
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proxy_pass http://backend:8000;
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}
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}
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