基于Docker部署Tomcat集群、|基于Docker部署Tomcat集群、 Nginx负载均衡的问题小结基于Docker部署Tomcat集群、Ngin

写在前面
一，Ngixn 镜像制作
二，java Web(Tomcat)应用镜像构建
三，运行容器 Nginx镜像

写在前面看完Dokcer相关的书籍，正好有个项目要这样搞，所以自己练习一下。
当作一百世一样。这里的道理很明白:我思故我在,既然我存在,就不能装作不存在。无论如何,我要为自己负起责任。——王小波《三十而立》
结构图：

基于Docker部署Tomcat集群、|基于Docker部署Tomcat集群、 Nginx负载均衡的问题小结

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这里仅作为一种学习，一般这种负载的话，Nginx是放到主机侧的， JavaWeb(Tomcat)应用放到容器里。
效果

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新建文件夹。

D=uag; mkdir $D; cd $D; mkdir uag_nginx uag_tomcat8; ls uag_nginxuag_tomcat8

一，Ngixn 镜像制作

cd uag_nginx/# 用于存放配置文件mkdir nginxvim Dockerfile

Dockerfile 文件内容

FROM nginxLABEL maintainer="uag"ENV REFRESHED_AT 2021-08-27EXPOSE 8099

构建nginx配置文件内容
这个的配置文件，在容器运行的时候通过 -v参数与容器内部共享。方便后期参数更改

cd ./nginxvim nginx.conf

nginx.conf 配置文件内容

usernginx; worker_processesauto; error_log/var/log/nginx/error.log notice; pid/var/run/nginx.pid; daemon off; events {worker_connections1024; }http {include/etc/nginx/mime.types; default_typeapplication/octet-stream; log_formatmain'$upstream_addr - $remote_addr - $remote_user [$time_local] "$request" ''$status $body_bytes_sent "$http_referer" ''"$http_user_agent" "$http_x_forwarded_for"'; access_log/var/log/nginx/access.logmain; sendfileon; #tcp_nopushon; keepalive_timeout65; #gzipon; include /etc/nginx/conf.d/*.conf; server {listen8099; server_namelocalhost; root/var/www/html/; indexindex.html index.htm; access_log/var/log/nginx/default_access.log main; error_log/var/log/nginx/default_error.log; location / {proxy_pass http://backend; }location ~ .* {proxy_pass http://backend; proxy_set_header Host $http_host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; }}# 这里配置负载 upstream backend {server 172.23.231.190:8069; server 172.23.231.190:8079; server 172.23.231.190:8089; }}

配置负载:172.23.231.190为宿主机IP,8069,8079,8089为对应的Java Web 暴露的应用端口。

# 这里配置负载 upstream backend {server 172.23.231.190:8069; server 172.23.231.190:8079; server 172.23.231.190:8089; }

构建Nginx镜像

docker build -t uag/uag_nginx .

二，java Web(Tomcat)应用镜像构建

cd uag_tomcat8/vim Dockerfile

Dockerfile 文件内容

FROM dordoka/tomcatMAINTAINER LIRUILONGCOPY UAWeb.war/opt/tomcat/webapps/UAWeb.warEXPOSE 8080ENTRYPOINT [ "/opt/tomcat/bin/catalina.sh", "run" ]

【基于Docker部署Tomcat集群、|基于Docker部署Tomcat集群、 Nginx负载均衡的问题小结】上传对应的War包

lsDockerfileUAWeb.war

构建镜像

docker build -t uag/uag_tomcat .

三，运行容器 Nginx镜像

docker run -d -p 8099:8099 --name uag_nginx-v $PWD/nginx/nginx.conf:/etc/nginx/nginx.confuag/uag_nginx nginx

java Web(Tomcat)镜像

docker run -it -d -p 8089:8080 --name uag_app_1uag/uag_tomcat docker run -it -d -p 8079:8080 --name uag_app_2uag/uag_tomcat docker run -it -d -p 8069:8080 --name uag_app_3uag/uag_tomcat

查看运行的容器

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浏览器访问

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查看负载方式:新进程的方式

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查看负载方式:–volumes-from 方式
Dockerfile文件

FROM nginxLABEL maintainer="uag"ENV REFRESHED_AT 2021-08-27VOLUME/var/log/nginx/EXPOSE 80

┌──(liruilong?Liruilong)-[/mnt/e/docker/uag/uag_nginx]└─$ docker run-it --rm --volumes-from nginx_logcentos cat /var/log/nginx/default_access.log172.23.231.190:8069 - 172.17.0.1 - - [30/Aug/2021:12:55:02 +0000] "GET /UAWeb/services/listServices HTTP/1.1" 200 12660 "http://127.0.0.1:8099/UAWeb/" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36" "-"172.23.231.190:8079 - 172.17.0.1 - - [30/Aug/2021:12:55:02 +0000] "GET /UAWeb/axis2-web/css/axis-style.css HTTP/1.1" 200 1587 "http://127.0.0.1:8099/UAWeb/services/listServices" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36" "-"172.23.231.190:8069 - 172.17.0.1 - - [30/Aug/2021:12:55:02 +0000] "GET /UAWeb/axis2-web/images/asf-logo.gif HTTP/1.1" 200 5866 "http://127.0.0.1:8099/UAWeb/services/listServices" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36" "-"172.23.231.190:8079 - 172.17.0.1 - - [30/Aug/2021:12:55:02 +0000] "GET /UAWeb/axis2-web/images/axis_l.jpg HTTP/1.1" 200 12340 "http://127.0.0.1:8099/UAWeb/services/listServices" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36" "-"172.23.231.190:8089 - 172.17.0.1 - - [30/Aug/2021:12:55:03 +0000] "GET /UAWeb/services/listServices HTTP/1.1" 200 12660 "http://127.0.0.1:8099/UAWeb/" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36" "-"172.23.231.190:8069 - 172.17.0.1 - - [30/Aug/2021:12:55:03 +0000] "GET /UAWeb/axis2-web/images/asf-logo.gif HTTP/1.1" 200 5866 "http://127.0.0.1:8099/UAWeb/services/listServices" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92

构建好镜像上传仓库：

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嗯，需要注册一个Docker Hub账号，然后登录，需要镜像前面加 账户名/

┌──(liruilong?Liruilong)-[/mnt/e/docker/uag/uag_nginx]└─$ docker push liruilong/nginx_logThe push refers to repository [docker.io/liruilong/nginx_log]An image does not exist locally with the tag: liruilong/nginx_log┌──(liruilong?Liruilong)-[/mnt/e/docker/uag/uag_nginx]└─$ docker tag 9c9af0362eb9liruilong/nginx_log┌──(liruilong?Liruilong)-[/mnt/e/docker/uag/uag_nginx]└─$ docker push liruilong/nginx_logThe push refers to repository [docker.io/liruilong/nginx_log]fb04ab8effa8: Pushed8f736d52032f: Pushed009f1d338b57: Pushed678bbd796838: Pushedd1279c519351: Pushedf68ef921efae: Pushedlatest: digest: sha256:2af7e8aeab84e8a816caf6b0342e1a45f95c7089ff52578040ea3a4c28a943c7 size: 1570┌──(liruilong?Liruilong)-[/mnt/e/docker/uag/uag_nginx]└─$docker push liruilong/nginx_log:tagname# 拉去镜像