# docker-compose-boot-nginx
**Repository Path**: merryyou/docker-compose-boot-nginx
## Basic Information
- **Project Name**: docker-compose-boot-nginx
- **Description**: No description available
- **Primary Language**: Java
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No
## Statistics
- **Stars**: 0
- **Forks**: 0
- **Created**: 2018-04-01
- **Last Updated**: 2020-12-19
## Categories & Tags
**Categories**: Uncategorized
**Tags**: None
## README
> Docker 是一个开源的应用容器引擎，让开发者可以打包他们的应用以及依赖包到一个可移植的容器中，然后发布到任何流行的 Linux 机器上，也可以实现虚拟化。容器是完全使用沙箱机制，相互之间不会有任何接口。
## 前言
本篇文章引导你使用`Docker Compose`在`Docker`容器中运行`nginx`和两个简单的`Spring Boot`应用程序，从而实现负载均衡。关于`Docker` 入门请参考**纯洁的微笑**[Docker 系列文章](http://www.ityouknow.com/docker.html)
### 准备
- Docker CE
### 技术栈
- Docker
- Spring Boot
- NGINX
- Maven
### 目录结构
[](https://raw.githubusercontent.com/longfeizheng/longfeizheng.github.io/master/images/docker/docker01.png "https://raw.githubusercontent.com/longfeizheng/longfeizheng.github.io/master/images/docker/docker01.png")
#### Spring Boot应用程序
##### pom.xml
```xml
org.springframework.boot
spring-boot-starter-parent
2.0.0.RELEASE
4.0.0
docker-compose-springboot-nginx
org.springframework.boot
spring-boot-starter-web
org.springframework.boot
spring-boot-starter-freemarker
org.springframework.boot
spring-boot-maven-plugin
```
##### DockerController
```java
package cn.merryyou.docker.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
/**
* Created on 2018/3/20 0020.
*
* @author zlf
* @email i@merryyou.cn
* @since 1.0
*/
@Controller
public class DockerController {
@GetMapping("/")
public String docker() {
return "docker";
}
}
```
##### DockerApplication
```java
package cn.merryyou.docker;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
/**
* Created on 2018/3/20 0020.
*
* @author zlf
* @email i@merryyou.cn
* @since 1.0
*/
@SpringBootApplication
public class DockerApplication {
public static void main(String[] args) {
SpringApplication.run(DockerApplication.class, args);
}
}
```
##### docker.ftl
```html
Hello Spring Boot with docker-compose!
```
##### application.yml
```yaml
spring:
freemarker:
template-loader-path: classpath:/templates
request-context-attribute: .ftl
```
##### Dockerfile
```yaml
FROM hub.c.163.com/wuxukun/maven-aliyun:3-jdk-8
ADD ["app-1.jar", "app.jar"]
EXPOSE 8080
ENTRYPOINT ["java","-jar","/app.jar"]
```
##### nginx.conf
```yaml
upstream app {
server app-1:8080;
server app-2:8080;
}
server {
listen 80;
charset utf-8;
access_log off;
location / {
proxy_pass http://app;
proxy_set_header Host $host:$server_port;
proxy_set_header X-Forwarded-Host $server_name;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
location /static {
access_log off;
expires 30d;
alias /app/static;
}
}
```
##### docker-compose.yaml
```yaml
version: '2'
services:
nginx:
container_name: some-nginx
image: nginx:1.13
restart: always
ports:
- 80:80
# - 443:443
volumes:
- ./nginx/conf.d:/etc/nginx/conf.d
app-1:
restart: always
build: ./app/docker-app-1
working_dir: /app
volumes:
- ./app:/app
expose:
- "8080"
# command: mvn clean spring-boot:run
depends_on:
- nginx
app-2:
restart: always
build: ./app/docker-app-2
working_dir: /app
volumes:
- ./app:/app
expose:
- "8080"
# command: mvn clean spring-boot:run
depends_on:
- nginx
```
- `version: '2'`： 表示使用第二代语法来构建 `docker-compose.yaml` 文件；
- `services`: 用来表示 `compose` 需要启动的服务，我们可以看出此文件中有三个服务分别为：nginx、app-1、app-2。
- `container_name`:容器名称
- `ports`:表示对外开放的端口
- `restart: always`:表示如果服务启动不成功会一直尝试。
- `volumes`:加载本地目录下的配置文件到容器目标地址下
##### 测试
- 切换到`docker-compose-boot-nginx` 目录下执行 `docker-compose up`
- 访问`http://localhost`
##### 补充
1. 如果执行`docker-compose up`很慢，可在`host`文件中添加`127.0.0.1 localunixsocket.local` [参考](https://github.com/docker/compose/issues/3419)
2. `docker logs -f -t --tail 行数 容器名`查看容器的实时日志
效果如下：
[](https://raw.githubusercontent.com/longfeizheng/longfeizheng.github.io/master/images/docker/docker01.gif "https://raw.githubusercontent.com/longfeizheng/longfeizheng.github.io/master/images/docker/docker01.gif")
[](https://raw.githubusercontent.com/longfeizheng/longfeizheng.github.io/master/images/docker/docker02.gif "https://raw.githubusercontent.com/longfeizheng/longfeizheng.github.io/master/images/docker/docker02.gif")
## 代码下载 ##
从我的 github 中下载，[https://github.com/longfeizheng/docker-compose-boot-nginx](https://github.com/longfeizheng/docker-compose-boot-nginx)
---
[](https://raw.githubusercontent.com/longfeizheng/longfeizheng.github.io/master/images/wechat/xiaochengxu.png "https://raw.githubusercontent.com/longfeizheng/longfeizheng.github.io/master/images/wechat/xiaochengxu.png")
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