linux空间做网站,wordpress仿异次元主题,linux播放高清电影,建筑网络学院1. 引言上两节我们通过简单的demo学习了docker的基本操作。这一节我们来一个进阶学习#xff0c;完成ASP.NET Core MySql Nginx的容器化部署。本文是基于CentOS 7.4环境进行演示#xff0c;示例项目可以访问Docker.NetCore.MySql进行下载。2. Hello MySQL同样我们还是以循序… 1. 引言上两节我们通过简单的demo学习了docker的基本操作。这一节我们来一个进阶学习完成ASP.NET Core MySql Nginx的容器化部署。本文是基于CentOS 7.4环境进行演示示例项目可以访问Docker.NetCore.MySql进行下载。2. Hello MySQL同样我们还是以循序渐进的方式来展开。首先来基于Docker来试玩一下MySQL。2.1. 创建MySql实例//拉取mysql镜像docker pull mysql$ docker images$REPOSITORY TAG IMAGE ID CREATED SIZEdocker.io/mysql latest 7d83a47ab2d2 13 days ago 408.2 MB//创建一个mysql实例$ docker run --name hello.mysql -e MYSQL_ROOT_PASSWORD123456 -d mysql$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMESe21bbd84e0b5 mysql docker-entrypoint.sh 3 minutes ago Up 3 minutes 3306/tcp hello.mysql下面我们直接在容器中连接到我们刚刚创建的mysql数据库$ docker exec -it hello.mysql \mysql -uroot -p123456
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 8Server version: 5.7.20 MySQL Community Server (GPL)Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.Type help; or \h for help. Type \c to clear the current input statement.mysql show databases;
--------------------
| Database |
--------------------
| information_schema |
| mysql |
| performance_schema |
| sys |
--------------------4 rows in set (0.00 sec)2.2. 挂载数据卷上面创建的mysql实例其数据都在容器内部存储这样就暴露了一个问题如果容器销毁那么对应的数据库数据就会丢失。那如何持久化存储容器内数据呢我们可以通过挂载数据卷的方式来解决这一问题。//创建数据卷
$ docker volume create --name hello.dbhello.db
//查看数据卷信息
$ docker volume inspect hello.db
[{ Name: hello.db, Driver: local, Mountpoint: /var/lib/docker/volumes/hello.db/_data, Labels: {}, Scope: local}
]
// 挂载数据卷启动MySql实例
$ docker run --name hello.mysql \ -v hello.db:/var/lib/mysql \-e MYSQL_ROOT_PASSWORD123456 -d mysql上面是使用使用了docker volume create命令创建了一个数据卷当然我们也可以自行挂载某个目录作为数据卷。3. 准备.NET CoreEFCoreMySql项目为了演示方便我准备了一个ASP.NET CoreEFCoreMySql的示例项目。其结构如下所示 是基于.NET Core Mvc模板项目其中定义了一个Product实体并通过ProductsController暴露WebApi接口。核心代码如下Product实体类public class Product{ public int ProductId { get; set; } public string Name { get; set; } public decimal Price { get; set; } public int StockQty { get; set; }
}DbContext类public class MySqlDbContext : DbContext{ public MySqlDbContext (DbContextOptionsMySqlDbContext options): base(options) {} public DbSetProduct Products { get; set; }
}数据库初始化类public class DbInitializer{ public static void Initialize(MySqlDbContext context) {context.Database.EnsureCreated(); if (context.Products.Any()){ return;} var products new Product[]{ new Product{Nameiphone 6,Price5000,StockQty10 }, new Product{Nameiphone 7,Price6000,StockQty10 }, new Product{Nameiphone 7 plus,Price7000,StockQty10 }, new Product{Nameiphone x,Price8000,StockQty10 }};context.Products.AddRange(products);context.SaveChanges();}
}该数据库初始化类会在项目启动时运行。详细代码可参考Docker.NetCore.MySql。4. 基于示例项目进行实操演练4.1 安装Git并Clone示例项目$ yum install git
$ git --version
git version 1.8.3.1$ cd ~/demo
$ git clone https://github.com/yanshengjie/Docker.NetCore.MySql.gitCloning into Docker.NetCore.MySql...remote: Counting objects: 155, done.remote: Compressing objects: 100% (125/125), done.remote: Total 155 (delta 42), reused 123 (delta 25), pack-reused 0Receiving objects: 100% (155/155), 534.30 KiB | 333.00 KiB/s, done.
Resolving deltas: 100% (42/42), done.4.2. 构建镜像细心的你会发现项目中已经定义了Dockerfile所以我们可以直接使用docker build构建镜像。# cd Docker.NetCore.MySql[rootiZ288a3qazlZ Docker.NetCore.MySql]# lsappsettings.Development.json docker-compose.yml Program.cs Viewsappsettings.json Dockerfile proxy.conf wwwrootbundleconfig.json Docker.NetCore.MySql.csproj README.mdControllers LICENSE ScaffoldingReadMe.txtData Models Startup.cs
//构建镜像# docker build -t docker.netcore.mysql .Sending build context to Docker daemon 3.045 MBStep 1 : FROM microsoft/dotnet:latest --- 7d4dc5c258ebStep 2 : WORKDIR /app --- Using cache--- 98d48a4e278cStep 3 : COPY . /app --- 6b1bf8bb5261Removing intermediate container b86460477977Step 4 : RUN dotnet restore --- Running in 4e0a46f762bbRestoring packages for /app/Docker.NetCore.MySql.csproj... Installing Microsoft.CodeAnalysis.Razor 2.0.0...... Restore completed in 216.83 ms for /app/Docker.NetCore.MySql.csproj. --- 4df70c77916eRemoving intermediate container 4e0a46f762bbStep 5 : EXPOSE 5000--- Running in 11b421b3bd3e--- 3506253060feRemoving intermediate container 11b421b3bd3eStep 6 : ENV ASPNETCORE_URLS http://*:5000--- Running in 201aabbab72c--- 7f29963a8d96Removing intermediate container 201aabbab72cStep 7 : ENTRYPOINT dotnet run --- Running in c79f73cba162--- 9d1fb6ee46cbRemoving intermediate container c79f73cba162Successfully built 9d1fb6ee46cb
[rootiZ288a3qazlZ Docker.NetCore.MySql]# docker images docker.netcore.mysqlREPOSITORY TAG IMAGE ID CREATED SIZEdocker.netcore.mysql latest 9d1fb6ee46cb 13 seconds ago 1.756 GB4.3. 启动镜像并连接到指定数据库docker提供了--link参数用于在容器之间建立连接。下面我们实例化创建的镜像docker.netcore.mysql并命名容器名为hello.netcore.mysql并使用--link参数与我们文章开头建立的hello.mysql容器建立连接。# docker run --name hello.netcore.mysql --link hello.mysql:db -d -p 5000:5000 docker.netcore.mysql这里需要特别注意一下--linkhello.mysql:db这个参数就是告诉Docker容器需要使用hello.mysql容器并将其别名命名为db这样在hello.netcore.mysql这个容器中就可以使用db来作为提供mysql数据库服务的服务器。这也就是为什么我们.NET Core项目中连接字符串设置为serverdb;的原因。ConnectionStrings: { MySql: serverdb;databaseMySqlDbContext;uidroot;pwd123456; }//查看运行中容器列表# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES5cbfd27ebe2a docker.netcore.mysql dotnet run 2 minutes ago Up 2 minutes 0.0.0.0:5000-5000/tcp hello.netcore.mysql4dfa4159b669 mysql docker-entrypoint.sh About an hour ago Up About an hour 3306/tcp hello.mysql//访问api/products[rootiZ288a3qazlZ Docker.NetCore.MySql]# curl http://localhost:5000/api/products[{productId:1,name:iphone 6,price:5000.0000000000000000000000000,stockQty:10},{productId:2,name:iphone 7,price:6000.0000000000000000000000000,stockQty:10},{productId:3,name:iphone 7 plus,price:7000.0000000000000000000000000,stockQty:10},{productId:4,name:iphone x,price:8000.000000000000000000000000,stockQty:10}]从上图可知我们完成了.NET Core与MySql的连接。5. ASP.NET Core MySql Nginx结合上一篇文章.NET Core容器化之多容器应用部署Docker-Compose我们来使用docker-compose完成asp.net core mysql nginx的多容器部署。5.1. 定义 docker-compose.ymlversion: 2services: db: container_name: hello.db environment: MYSQL_ROOT_PASSWORD: 123456 volumes:- ./mysql:/var/lib/mysqlweb: container_name: hello.web build: . depends_on:- db links:- dbreverse-proxy: container_name: hello.proxy image: nginx depends_on:- web ports:- 9090:8080 volumes:- ./proxy.conf:/etc/nginx/conf.d/default.conf其中定义了三个服务db使用mysql镜像并挂载当前项目下的mysql文件夹来持久化存储。web基于当前项目构建的容器服务依赖于db服务。reverse-proxy使用nginx定义反向代理服务其中挂载了当前项目下的proxy.conf文件作为反向代理配置文件。其中proxy.conf的配置如下注意proxy_pass指定的url为http://web:5000)server {listen 8080;location / { proxy_pass http://web:5000;
}
}5.2. 启动Compose在启动Compose之前建议清空上面创建的容器。也可以使用docker rm $(docker ps -qa)清除所有容器。//启动compose
[rootiZ288a3qazlZ Docker.NetCore.MySql]# docker-compose up -dCreating network dockernetcoremysql_default with the default driverBuilding webStep 1 : FROM microsoft/dotnet:latest --- 7d4dc5c258ebStep 2 : WORKDIR /app --- Using cache--- 98d48a4e278cStep 3 : COPY . /app --- d41b32323c0fRemoving intermediate container 1259f5fb82bcStep 4 : RUN dotnet restore --- Running in d482e355de77Restoring packages for /app/Docker.NetCore.MySql.csproj... Installing Microsoft.CodeAnalysis.Razor 2.0.0...... Restore completed in 216.83 ms for /app/Docker.NetCore.MySql.csproj. --- a0658008f161Removing intermediate container d482e355de77Step 5 : EXPOSE 5000--- Running in dc6eeb29fd5e--- a419314ece08Removing intermediate container dc6eeb29fd5eStep 6 : ENV ASPNETCORE_URLS http://*:5000--- Running in c1d1474b14a0--- 9cc13c549042Removing intermediate container c1d1474b14a0Step 7 : ENTRYPOINT dotnet run --- Running in efdf0e857a84--- 830ac11428cfRemoving intermediate container efdf0e857a84Successfully built 830ac11428cfCreating hello.db ... doneCreating hello.web ... doneCreating hello.proxy ... doneCreating hello.web ...Creating hello.proxy ...
[rootiZ288a3qazlZ Docker.NetCore.MySql]# docker psCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES6253bf85682e nginx nginx -g daemon off 33 seconds ago Up 28 seconds 80/tcp, 0.0.0.0:9090-8080/tcp hello.proxyea553a9e22f2 dockernetcoremysql_web dotnet run 37 seconds ago Up 32 seconds 5000/tcp hello.weba1f5aa981bfb mysql docker-entrypoint.sh 38 seconds ago Up 36 seconds 3306/tcp hello.db
[rootiZ288a3qazlZ Docker.NetCore.MySql]# docker-compose ps Name Command State Ports----------------------------------------------------------------------------------hello.db docker-entrypoint.sh mysqld Up 3306/tcphello.proxy nginx -g daemon off; Up 80/tcp, 0.0.0.0:9090-8080/tcphello.web dotnet run Up 5000/tcp
[rootiZ288a3qazlZ Docker.NetCore.MySql]# curl http://localhost:9090/api/products
[{productId:1,name:iphone 6,price:5000.0000000000000000000000000,stockQty:10},{productId:2,name:iphone 7,price:6000.0000000000000000000000000,stockQty:10},{productId:3,name:iphone 7 plus,price:7000.0000000000000000000000000,stockQty:10},{productId:4,name:iphone x,price:8000.000000000000000000000000,stockQty:10}]上面的运行结果显示我们已经成功完成了ASP.NET CoreMySqlNginx的多容器应用部署。通过浏览器访问http:ipaddress:9090/api/products即可访问我们暴露的api。5.3. 数据库验证我们来验证一下数据库是否成功创建[rootiZ288a3qazlZ Docker.NetCore.MySql]# ls mysqlauto.cnf client-key.pem ib_logfile0 performance_schema server-key.pem
ca-key.pem MySqlDbContext ib_logfile1 private_key.pem sys
ca.pem ib_buffer_pool ibtmp1 public_key.pem
client-cert.pem ibdata1 mysql server-cert.pem
[rootiZ288a3qazlZ Docker.NetCore.MySql]# docker exec -it hello.db mysql -uroot -p123456mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 8Server version: 5.7.20 MySQL Community Server (GPL)Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.Type help; or \h for help. Type \c to clear the current input statement.mysql show databases;
-----------------------
| Database |
-----------------------
| information_schema |
| MySqlDbContext |
| mysql |
| performance_schema |
| sys |
-----------------------5 rows in set (0.00 sec)mysql use MySqlDbContext;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -ADatabase changed
mysql show tables;
---------------------------------
| Tables_in_MySqlDbContext |
---------------------------------
| Products |
---------------------------------1 row in set (0.00 sec)mysql select * from Products;
-------------------------------------------------------------------------
| ProductId | Name | Price | StockQty |
-------------------------------------------------------------------------
| 1 | iphone 6 | 5000.000000000000000000000000000000 | 10 |
| 2 | iphone 7 | 6000.000000000000000000000000000000 | 10 |
| 3 | iphone 7 plus | 7000.000000000000000000000000000000 | 10 |
| 4 | iphone x | 8000.000000000000000000000000000000 | 10 |
-------------------------------------------------------------------------4 rows in set (0.00 sec)从上面的运行结果可知我们成功将项目文件夹下的mysql文件夹挂载到容器内部进行数据持久化。6. 最后本文通过先介绍如何基于Docker实例化MySQL容器再介绍如何通过挂载数据卷来持久化MySQL数据以及如何使用--Link参数进行容器之间的连接完成了.NET Core连接MySQL数据库。 最后使用Docker-Compose综合ASP.NET CoreMySQLNginx完成了容器化部署。下一节我们来介绍下如何使用Docker-Swarm进行集群部署。相关文章Docker容器中开始.NETCore之路.NET Core容器化Docker微服务革命容器化的应用、数据及其它一切ABP .Net Core Entity Framework迁移使用MySql数据库ASP.NET Core 2.0 EF6 Linux MySql混搭.NET Core容器化之多容器应用部署Docker-Compose原文地址:https://www.cnblogs.com/sheng-jie/p/8249660.html.NET社区新闻深度好文欢迎访问公众号文章汇总 http://www.csharpkit.com
