Docker nginx部署项目

一、构建镜像

1、修改Dockerfile

#指定基础镜像,并且必须是第一条指令
FROM alpine:3.10

#指明该镜像的作者和其电子邮件
MAINTAINER xyz "[email protected]"

#在构建镜像时,指定镜像的工作目录,之后的命令都是基于此工作目录,如果不存在,则会创建目录
WORKDIR /usr/local/java

#将一些安装包复制到镜像中,语法：ADD/COPY <src>... <dest>
#ADD与COPY的区别：ADD复制并解压,COPY仅复制
ADD jre-8u221-linux-x64.tar.gz /usr/local/java/
#glibc安装包如果从网络下载速度实在是太慢了,先提前下载复制到镜像中
COPY glibc-2.29-r0.apk /usr/local/java/
COPY glibc-bin-2.29-r0.apk /usr/local/java/
COPY glibc-i18n-2.29-r0.apk /usr/local/java/
COPY msg.jar /usr/local/java/

#更新Alpine的软件源为阿里云,因为从默认官源拉取实在太慢了
RUN echo http://mirrors.aliyun.com/alpine/v3.10/main/ > /etc/apk/repositories && \
    echo http://mirrors.aliyun.com/alpine/v3.10/community/ >> /etc/apk/repositories
    RUN apk update && apk upgrade

#运行指定的命令
#Alpine linux为了精简本身并没有安装太多的常用软件,apk类似于ubuntu的apt-get,
#用来安装一些常用软V件,其语法如下：apk add bash wget curl git make vim docker
#wget是linux下的ftp/http传输工具,没安装会报错“/bin/sh: wget: not found”,网上例子少安装wget
#ca-certificates证书服务,是安装glibc前置依赖
RUN apk --no-cache add ca-certificates wget \
    && wget -q -O /etc/apk/keys/sgerrand.rsa.pub https://alpine-pkgs.sgerrand.com/sgerrand.rsa.pub \
    && apk add glibc-2.29-r0.apk glibc-bin-2.29-r0.apk glibc-i18n-2.29-r0.apk \
    && rm -rf /var/cache/apk/* glibc-2.29-r0.apk glibc-bin-2.29-r0.apk glibc-i18n-2.29-r0.apk

#配置环境变量
ENV JAVA_HOME=/usr/local/java/jre1.8.0_221
ENV CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
ENV PATH=$JAVA_HOME/bin:$PATH

CMD  java -jar msg.jar 

2、上传jar包

3、构建

docker build -t spring:2.0 .

二、nginx发布前端项目

1、下载nginx镜像

docker build nginx

2、创建容器

docker run -itd --name nginx -p 8080:80 nginx

3、访问nginx

4、进入nginx容器

** ①、发现无法使用vim命令修改配置文件 所有需要进行目录挂载**

②、删除nginx容器

5、将配置文件挂载到容器中

①、在home目录下新建nginx目录

②、进入nginx目录，新建conf.d,html,log目录

③、进入conf.dx，新建default.conf

**default.conf **

server {
    listen       80;
    server_name  www.ysq.com;

    location / {
        root   /etc/nginx/html;
        index  index.html index.htm;
    }
    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }
    location ~^/spa/ {
        proxy_pass  http://192.168.129.123:8080;
    }
}

修改host文件

④、进入html文件夹，导入vue.zip并解压

⑤、 新建容器并进行挂载

docker run -itd \

--name nginx01
-v /home/nginx/conf.d:/etc/nginx/conf.d
-v /home/nginx/html:/etc/nginx/html
-v /home/nginx/log:/usr/log/nginx
-p 8084:80
nginx

⑥、浏览器访问

三、nginx反向代理

点击后台访问报错

1、 自定义容器

docker run -it --name spring01 -p 8081:8080 spring:2.0

浏览器访问

2、修改配置文件 default.conf

server {undefined
listen 80;
server_name www.ysq.com;

location / {undefined
     root   /etc/nginx/html;
     index  index.html index.htm;
 }
 error_page   500 502 503 504  /50x.html;
 location = /50x.html {undefined
     root   /usr/share/nginx/html;
 }
** location ~^/api/ {undefined
     proxy_pass  http://172.17.0.3:8081;
 }**

}

3、进入容器更新数据

nginx常用命令

检查配置

重读配置文件

三、nginx实现负载均衡

1、创建集群

创建容器

docker run -it --name spring01 -p 8082:8080 spring:2.0

docker run -it --name spring01 -p 8083:8080 spring:2.0

2、修改default.conf

upstream tomcatList {
    server 172.17.0.5:8081 weight=1;
    server 172.17.0.3:8081 weight=2;
}

server {

    listen  80;
    server_name  www.zking.com;

    location / {
        root   /etc/nginx/html/;
        index  index.html index.htm;
    }

    error_page   500 502 503 504  /50x.html;

    location = /50x.html {
        root   /usr/share/nginx/html;
    }

    location /nacos {
        proxy_pass  http://nacosList;
    }

    location ~^/api/ {
        rewrite ^/api/(.*)$ /$1 break;
        proxy_pass  http://tomcatList;
        proxy_redirect default;
    }

}

四、容器跨网段数据交互

1，删除spring01和spring02

2、重新创建容器

docker run -it --name spring01 --net mynet -p 8081:8080 spring:2.0

docker run -it --name spring02 --net mynet -p 8082:8080 spring:2.0

3、修改配置文件

①、查看网段

②、修改

upstream tomcatList {
server 172.18.0.5:8081 weight=1;
server 172.18.0.3:8081 weight=2;
server 172.18.0.4:8081 weight=2;
}

server {

listen  80;
 server_name  www.zking.com;

location / {
     root   /etc/nginx/html/;
     index  index.html index.htm;
 }

error_page   500 502 503 504  /50x.html;

location = /50x.html {
     root   /usr/share/nginx/html;
 }

location /nacos {
     proxy_pass  http://nacosList;
 }

location ~^/api/ {
     rewrite ^/api/(.*)$ /$1 break;
     proxy_pass  http://tomcatList;
     proxy_redirect default;
 }

}

会出现响应超时问题！还是会访问不到

4、双网覆盖

docker network connect mynet nginx

5、浏览器访问