四、Spring Boot Docker(基于IDEA部署)
Docker环境搭建起来了,本文将介绍如何使用IDEA将一个工程部署到Docker。环境:ECS服务器(CentOS7.4),InteliJ IDEA(本地开发)1. 创建一个springboot工程,引入spring-boot-starter-web1)pom.xml<?xml version="1.0" encoding="UTF-8"?><p...
Docker环境搭建起来了,本文将介绍如何使用IDEA将一个工程部署到Docker。
环境:ECS服务器(CentOS7.4),InteliJ IDEA(本地开发)
1. 创建一个springboot工程,引入spring-boot-starter-web
1)pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.kevin</groupId>
<artifactId>spring-docker</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>spring-docker</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.6.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<!--
<plugin>
<groupId>com.spotify</groupId>
<artifactId>dockerfile-maven-plugin</artifactId>
<version>1.4.10</version>
<configuration>
<repository>${project.artifactId}-${project.version}</repository>
</configuration>
</plugin>
-->
</plugins>
</build>
</project>
2) application.properties
spring.application.name=spring-docker
server.port=8100
3) SpringDockerApplication.java
@SpringBootApplication
public class SpringDockerApplication {
public static void main(String[] args) {
SpringApplication.run(SpringDockerApplication.class, args);
}
}
4) HelloController.java
package com.kevin.springdocker.controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class HelloController {
@RequestMapping(value = "/sayHello", method = RequestMethod.GET)
public String sayHello(){
return "Hello Kevin";
}
}
5) 测试
6)打包mvn clean package
7)项目根目录创建Dockerfile文件(Dockerfile-idea)
# 引入openjdk镜像 -alpine对应的jdk文件较小
FROM openjdk:8-jdk-alpine
# tomcat默认临时目录
VOLUME /tmp
# 复制target下jar文件并重命名
COPY target/*.jar spring-docker.jar
# 申明开放端口
EXPOSE 8100
# 启动jar
ENTRYPOINT ["java","-jar","/spring-docker.jar"]
2. IDEA 引入 Docker插件
1) File -> Settings -> Plugins输入“Docker”,显示对应的插件,Install安装即可
2) File -> Settings -> Build -> Docker,点击+号,输入Docker服务地址,提示连接成功后保存
3) 查看Docker控制台,可查看当前镜像和容器
4) Run -> Edit Configurations,添加Docker运行配置,选择Docker服务器 -> 选择Dockerfile -> 填写镜像名 -> 填写容器名 ->绑定端口映射,点击OK保存
如果希望build镜像前自动打包代替手动打包,可配置Maven Goal先打包jar
5)选择上述配置并运行, 镜像build成功后,会自动创建一个容器启动服务
6) 访问服务器的服务接口
3. 通过TLS访问Docker服务端
0)创建证书制作目录
$ mkdir -p /usr/local/ca
$ cd /usr/local/ca
1)生成CA,输入密码
$ openssl genrsa -aes256 -out ca-key.pem 4096
$ openssl req -new -x509 -days 365 -key ca-key.pem -sha256 -out ca.pem
2)生成server key和签名证书,需要配置服务器域名或IP
$ openssl genrsa -out server-key.pem 4096
$ openssl req -subj "/CN=xxx.xxx.com" -sha256 -new -key server-key.pem -out server.csr
配置白名单,IP:0.0.0.0表示不限制;注意,如果证书是通过域名则配置DNS:xxx.xxx.com,如果证书是通过IP则配置IP:xxx.xxx.xxx.xxx
$ echo subjectAltName = DNS:xxx.xxx.com,IP:0.0.0.0 >> extfile.cnf
$ echo extendedKeyUsage = serverAuth >> extfile.cnf
$ openssl x509 -req -days 365 -sha256 -in server.csr -CA ca.pem -CAkey ca-key.pem -CAcreateserial -out server-cert.pem -extfile extfile.cnf
3) 生成client key
$ openssl genrsa -out key.pem 4096
$ openssl req -subj '/CN=client' -new -key key.pem -out client.csr
$ echo extendedKeyUsage = clientAuth > extfile-client.cnf
$ openssl x509 -req -days 365 -sha256 -in client.csr -CA ca.pem -CAkey ca-key.pem -CAcreateserial -out cert.pem -extfile extfile-client.cnf
4) 删除无用的文件,授权
$ rm -v client.csr server.csr extfile.cnf extfile-client.cnf
$ chmod -v 0400 ca-key.pem key.pem server-key.pem
$ chmod -v 0444 ca.pem server-cert.pem cert.pem
将服务端证书放到docker配置目录
$ cp server-*.pem /etc/docker/
$ cp ca.pem /etc/docker/
5)修改docker配置,并重启docker
$ vim /usr/lib/systemd/system/docker.service
将ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock改为
ExecStart=/usr/bin/dockerd --tlsverify --tlscacert=/etc/docker/ca.pem --tlscert=/etc/docker/server-cert.pem --tlskey=/etc/docker/server-key.pem -H fd:// -H=0.0.0.0:2376 --containerd=/run/containerd/containerd.sock
$ systemctl daemon-reload
$ systemctl restart docker
6)服务器开放2376端口(由于我的服务器是阿里的ECS,直接配置安全组即可)
7)下载客户端证书(使用FileZilla下载到本地)
8)IDEA使用证书访问
删除无CA证书访问的配置,重新加一个Docker配置,使用https://xxx.xxx.com:2376,证书目录选择上一步下载到本地的目录,提示连接成功。
参考:
https://spring.io/guides/topicals/spring-boot-docker/
https://docs.docker.com/engine/security/https/
https://blog.csdn.net/lovexiaotaozi/article/details/82797236
https://docs.docker.com/develop/develop-images/dockerfile_best-practices/
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