docker-compose部署 nginx 反向代理 tomcat集群

目录结构如下：

.
├── docker-compose.yaml
├── nginx
│     ├── Dockerfile
│     └── nginx-1.14.2
│     ├── nginx.conf 
│     ├── logs  
└── webapp
    ├── apache-tomcat-8.5.41
    |—— Dockerfile
    ├── jdk1.8.0_191
    ├── logs
    └── webapps
        └── ROOT
            └── index.jsp

实验环境没有做数据库的部署

nginx.conf 内容如下

user  nginx;
worker_processes  2;
worker_cpu_affinity 01 10;
events {
    worker_connections  65535;
    use epoll;
}
http {
    include       mime.types;
    default_type  application/octet-stream;
    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';
    #access_log  logs/access.log  main;
    upstream example {
       server tomcat1:8080;
       server tomcat2:8080;
       server tomcat3:8080;  
    }
    sendfile        on;
    #tcp_nopush     on;
    #keepalive_timeout  0;
    keepalive_timeout  60;
    client_header_buffer_size 4k;
    
    #gzip  on;
    gzip  on;
    gzip_buffers 32 4k;
    gzip_comp_level 4;
    gzip_http_version 1.0;
    gzip_disable "MSIE [1-6]\.";
    gzip_min_length 1024;
    gzip_types text/plain application/x-javascript text/css application/xml; 
    server {
        listen       80;
        server_name  localhost;
        #charset koi8-r;
        #access_log  logs/host.access.log  main;
        access_log  /usr/local/nginx/logs/host_access.log;
        error_log  /usr/local/nginx/logs/host_error.log;
        location ~ \.(html|css|js|jpg|png|gif)$ {
            root   /opt/webapp/ROOT;
        }
	location / {
	    proxy_pass http://example;
	    proxy_set_header X-Real-IP $remote_addr;
	    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
	}
        #error_page  404              /404.html;
        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
        #
        #location ~ \.php$ {
        #    proxy_pass   http://127.0.0.1;
        #}
        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        #location ~ \.php$ {
        #    root           html;
        #    fastcgi_pass   127.0.0.1:9000;
        #    fastcgi_index  index.php;
        #    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
        #    include        fastcgi_params;
        #}
        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        #location ~ /\.ht {
        #    deny  all;
        #}
    }
    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    #server {
    #    listen       8000;
    #    listen       somename:8080;
    #    server_name  somename  alias  another.alias;
    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}
    # HTTPS server
    #
    #server {
    #    listen       443 ssl;
    #    server_name  localhost;
    #    ssl_certificate      cert.pem;
    #    ssl_certificate_key  cert.key;
    #    ssl_session_cache    shared:SSL:1m;
    #    ssl_session_timeout  5m;
    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers  on;
    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}
}

index.jsp测试索引文件内容

<%@ page language="java" contentType="text/html; charset=utf-8"  import="java.net.InetAddress"  
    pageEncoding="utf-8"%>







     <%
         InetAddress addr = InetAddress.getLocalHost();
         out.println("主机地址："+addr.getHostAddress());
         out.println("主机名："+addr.getHostName());
      %>

部署和构建

Dockerfile 构建nginx镜像

cd nginx/

Dockerfile内容

FROM centos
MAINTAINER Ren
RUN yum -y install pcre-devel openssl-devel net-tools gcc gcc-c++ zlib zlib-devel \
    make openssl

ADD  ./nginx-1.14.2 /tmp/nginx-1.14.2
WORKDIR  /tmp
RUN cd /tmp/nginx-1.14.2 \
    && ./configure --prefix=/usr/local/nginx \
     --with-http_ssl_module \
     --with-http_gzip_static_module \
     --with-http_realip_module \
    && make && make install
RUN mkdir -p /usr/local/nginx/logs \
    && groupadd -g 1001 nginx \
    && useradd -g 1001 -u 1001 -s /sbin/nologin -M nginx

CMD ["/usr/local/nginx/sbin/nginx", "-g", "daemon off;"]

构建

docker build -t webapp/nginx .

 

Dockerfile构建tomcat镜像

cd ../webapp/

Dockerfile 内容

FROM centos

MAINTAINER ren

RUN mkdir -p /usr/local/webapp

ADD apache-tomcat-8.5.41 /usr/local/webapp/tomcat

ADD jdk1.8.0_191 /usr/local/webapp/jdk

ENV JAVA_HOME /usr/local/webapp/jdk
ENV CATALINA_HOME /usr/local/webapp/tomcat
ENV PATH $PATH:$JAVA_HOME/bin:$CATALINA_HOME/bin

EXPOSE 8080

CMD ["/usr/local/webapp/tomcat/bin/catalina.sh","run"]

构建

docker build -t repostry/centos_tomcat .

docker-compose 部署

docker-compose.yaml 文件内容

# version 1
#version: '1'
  
tomcat1:
  image: repostry/centos_tomcat
#  ports:
#  - "8080:8080"
  volumes:
  - ./webapp/logs:/usr/local/webapp/tomcat/logs
  - ./webapp/webapps:/usr/local/webapp/tomcat/webapps
  environment: 
      - TZ=Asia/Shanghai

tomcat2:
  image: repostry/centos_tomcat
#  ports:
#  - "8080:8080"
  volumes:
  - ./webapp/logs:/usr/local/webapp/tomcat/logs
  - ./webapp/webapps:/usr/local/webapp/tomcat/webapps
  environment: 
      - TZ=Asia/Shanghai

tomcat3:
  image: repostry/centos_tomcat
#  ports:
#  - "8080:8080"
  volumes:
  - ./webapp/logs:/usr/local/webapp/tomcat/logs
  - ./webapp/webapps:/usr/local/webapp/tomcat/webapps
  environment: 
      - TZ=Asia/Shanghai
nginx:
  image: webapp/nginx
  ports:
    - "80:80"
    - "443:443"
  links:
    - tomcat1:tomcat1
    - tomcat2:tomcat2
    - tomcat3:tomcat3
  volumes:
  - ./nginx/logs:/usr/local/nginx/logs
  - ./nginx/nginx.conf:/usr/local/nginx/conf/nginx.conf
  - ./webapp/webapps/:/opt/webapps/ROOT
  environment:
    - TZ=Asia/Shanghai
#  depends_on:
#    - tomcat1
#    - tomcat2
#    - tomcat3

启动服务

[root@docker ~]# docker-compose up -d 
Creating root_tomcat2_1 ... done
Creating root_tomcat1_1 ... done
Creating root_tomcat3_1 ... done
Creating root_nginx_1   ... done

查看服务状态

[root@docker ~]# docker-compose ps
     Name                   Command               State                    Ports                  
--------------------------------------------------------------------------------------------------
root_nginx_1     /usr/local/nginx/sbin/ngin ...   Up      0.0.0.0:443->443/tcp, 0.0.0.0:80->80/tcp
root_tomcat1_1   /usr/local/webapp/tomcat/b ...   Up      8080/tcp                                
root_tomcat2_1   /usr/local/webapp/tomcat/b ...   Up      8080/tcp                                
root_tomcat3_1   /usr/local/webapp/tomcat/b ...   Up      8080/tcp                             

如有错误 查看日志

[root@docker ~]# docker-compose logs -f --tail=100 tomcat1
Attaching to root_tomcat1_1
tomcat1_1  | 29-May-2019 15:59:12.593 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version:        Apache Tomcat/8.5.41
tomcat1_1  | 29-May-2019 15:59:12.596 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server built:          May 4 2019 09:17:16 UTC
tomcat1_1  | 29-May-2019 15:59:12.596 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server number:         8.5.41.0
tomcat1_1  | 29-May-2019 15:59:12.596 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Name:               Linux
tomcat1_1  | 29-May-2019 15:59:12.596 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Version:            3.10.0-862.el7.x86_64
tomcat1_1  | 29-May-2019 15:59:12.596 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Architecture:          amd64
tomcat1_1  | 29-May-2019 15:59:12.596 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Java Home:             /usr/local/webapp/jdk/jre
tomcat1_1  | 29-May-2019 15:59:12.596 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Version:           1.8.0_191-b12


[root@docker ~]# docker-compose logs nginx
Attaching to root_nginx_1

浏览器登录测试

刷新

每次刷新的主机名和IP 都不同 表名已经成功了

 

参考： https://blog.csdn.net/u011781521/article/details/80466451