基于Docker部署 Tomcat集群、 Nginx负载均衡

紫罗兰梦幻

写正在前里

看完Dokcer相干的册本，恰好有个项目要如许弄，以是本人操练一下。

看成一百世一样。那里的原理很大白:我思故我正在,既然我存正在,便不克不及假装没有存正在。不管怎样,我要为本人背起义务。——王小波《三十而坐》

构造图：

那里仅做为一种进修，普通这类背载的话，Nginx是放到主机侧的， JavaWeb(Tomcat)使用放到容器里。

结果

新建文件夹。

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

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一，Ngixn 镜像建造

cd uag_nginx/
# 用于寄存设置文件
mkdir nginx
vim Dockerfile

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Dockerfile 文件内乱容

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

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构建nginx设置文件内乱容

那个的设置文件，正在容器运转的时分经由过程 -v参数取容器内乱部同享。便利前期参数变动

cd ./nginx
vim nginx.conf

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nginx.conf 设置文件内乱容

user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log notice;
pid /var/run/nginx.pid;
daemon off;
events {
worker_connections 1024;
}
http {
include /etc/nginx/mime.types;
default_type application/octet-stream;
log_format main '$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.log main;
sendfile on;
#tcp_nopush on;
keepalive_timeout 65;
#gzip on;
include /etc/nginx/conf.d/*.conf;
server {
listen 8099;
server_name localhost;
root /var/www/html/;
index index.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;
}
}
# 那里设置背载
upstream backend {
server 172.23.231.190:8069;
server 172.23.231.190:8079;
server 172.23.231.190:8089;
}
}

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设置背载:172.23.231.190为宿主机IP,8069,8079,8089为对应的Java Web 表露的使用端心。

# 那里设置背载
upstream backend {
server 172.23.231.190:8069;
server 172.23.231.190:8079;
server 172.23.231.190:8089;
}

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构建Nginx镜像

docker build -t uag/uag_nginx .

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两，java Web(Tomcat)使用镜像构建

cd uag_tomcat8/
vim Dockerfile

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Dockerfile 文件内乱容

FROM dordoka/tomcat
MAINTAINER LIRUILONG
COPY UAWeb.war /opt/tomcat/webapps/UAWeb.war
EXPOSE 8080
ENTRYPOINT [ "/opt/tomcat/bin/catalina.sh", "run" ]

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上传对应的War包

ls
Dockerfile UAWeb.war

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构建镜像

docker build -t uag/uag_tomcat .

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三，运转容器

Nginx镜像

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

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java Web(Tomcat)镜像

docker run -it -d -p 8089:8080 --name uag_app_1 uag/uag_tomcat
docker run -it -d -p 8079:8080 --name uag_app_2 uag/uag_tomcat
docker run -it -d -p 8069:8080 --name uag_app_3 uag/uag_tomcat

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查察运转的容器

阅读器会见

查察背载方法:新历程的方法

查察背载方法:–volumes-from 方法

Dockerfile文件

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

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┌──(liruilong㉿Liruilong)-[/mnt/e/docker/uag/uag_nginx]
└─$ docker run -it --rm --volumes-from nginx_log centos cat /var/log/nginx/default_access.log
172.23.231.190:8069 - 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

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构建好镜像上传仓库：

嗯，需求注册一个Docker Hub账号，然后登录，需求镜像前里减账户名/

┌──(liruilong㉿Liruilong)-[/mnt/e/docker/uag/uag_nginx]
└─$ docker push liruilong/nginx_log
The 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 9c9af0362eb9 liruilong/nginx_log
┌──(liruilong㉿Liruilong)-[/mnt/e/docker/uag/uag_nginx]
└─$ docker push liruilong/nginx_log
The push refers to repository [docker.io/liruilong/nginx_log]
fb04ab8effa8: Pushed
8f736d52032f: Pushed
009f1d338b57: Pushed
678bbd796838: Pushed
d1279c519351: Pushed
f68ef921efae: Pushed
latest: digest: sha256:2af7e8aeab84e8a816caf6b0342e1a45f95c7089ff52578040ea3a4c28a943c7 size: 1570
┌──(liruilong㉿Liruilong)-[/mnt/e/docker/uag/uag_nginx]
└─$ docker push liruilong/nginx_log:tagname # 推来镜像

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