docker下nginx反向代理和负载均衡配置
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docker下nginx反向代理和负载均衡配置
拉取镜像
docker pull nginx
docker pull tomcat
启动docker
docker run --name=my_nginx -p 8000:80 -d nginx
--name: 为nginx容器指定一个名称方便管理
-p: 将nginx内部80端口代理到宿主机8000端口,可以通过宿主机:8000访问nginx 80端口
-d: 后台运行
查看容器运行情况
docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
3694b7d63cab nginx "nginx -g 'daemon of…" 2 minutes ago Up 2 minutes 0.0.0.0:8000->80/tcp my_nginx
访问nginx
http://node3.liudehan.com:8000/
进入容器后台
docker exec -it my_nginx bash
root@3694b7d63cab:/etc/nginx# ls -l
total 40
drwxr-xr-x 2 root root 4096 May 8 03:01 conf.d
-rw-r--r-- 1 root root 1007 Apr 16 13:08 fastcgi_params
-rw-r--r-- 1 root root 2837 Apr 16 13:08 koi-utf
-rw-r--r-- 1 root root 2223 Apr 16 13:08 koi-win
-rw-r--r-- 1 root root 5231 Apr 16 13:08 mime.types
lrwxrwxrwx 1 root root 22 Apr 16 13:08 modules -> /usr/lib/nginx/modules
-rw-r--r-- 1 root root 643 Apr 16 13:08 nginx.conf
-rw-r--r-- 1 root root 636 Apr 16 13:08 scgi_params
-rw-r--r-- 1 root root 664 Apr 16 13:08 uwsgi_params
-rw-r--r-- 1 root root 3610 Apr 16 13:08 win-utf
nginx.conf是nginx主要配置文件,可以通过more命令查看nginx.conf
user nginx;
worker_processes 1;
error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;
events {
worker_connections 1024;
}
http {
include /etc/nginx/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 /var/log/nginx/access.log main;
sendfile on;
#tcp_nopush on;
keepalive_timeout 65;
#gzip on;
include /etc/nginx/conf.d/*.conf;
}
include /etc/nginx/conf.d/*.conf;
导入配置文件如下
root@3694b7d63cab:/etc/nginx/conf.d# cat default.conf
server {
listen 80;
server_name localhost;
#charset koi8-r;
#access_log /var/log/nginx/host.access.log main;
location / {
root /usr/share/nginx/html;
index index.html index.htm;
}
#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 /usr/share/nginx/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;
#}
}
nginx配置文件挂载
创建文件和目录
mkdir -p u01/nginx
mkdir -p u01/nginx/conf.d
touch u01/nginx/nginx.conf
touch u01/nginx/conf.d/default.conf
删除镜像,重新挂载
docker stop my_nginx
docker rm my_nginx
docker run --name=my_nginx -v /Users/liudehan/u01/nginx/nginx.conf:/etc/nginx/nginx.conf -v /Users/liudehan/u01/nginx/conf.d:/etc/nginx/conf.d -p 80:80 -d nginx
更改配置加载web应用
docker stop my_nginx
docker rm my_nginx
docker run --name=my_nginx -v /Users/liudehan/u01/nginx/nginx.conf:/etc/nginx/nginx.conf -v /Users/liudehan/u01/nginx/conf.d:/etc/nginx/conf.d -v /Users/liudehan/u01/nginx/www/dist-H5:/usr/share/nginx/html/dist-H5 -p 80:80 -d nginx
创建Tomcat应用
应用1
docker run --name=my_tomcat1 -v/Users/liudehan/u01/webapps:/usr/local/tomcat/webapps -p 8001:8080 -d tomcat
应用2
docker run --name=my_tomcat2 -v/Users/liudehan/u01/webapps:/usr/local/tomcat/webapps -p 8002:8080 -d tomcat
显示如下: my_tomcat1 my_tomcat2
nginx实现反向代理和负载均衡
nginx配置如下
default.conf
location / {
proxy_pass http://tomcat_server;
nginx.conf配置如下
http里面
upstream tomcat { //这不能为tomcat_server这样的,这是域名
server t1:8080;
}
配置docker如下
docker run --name=my_nginx --link=my_tomcat1:t1 --link=my_tomcat2:t2 -v /Users/liudehan/u01/nginx/nginx.conf:/etc/nginx/nginx.conf -v /Users/liudehan/u01/nginx/conf.d:/etc/nginx/conf.d -p 80:80 -d nginx
显示如下:
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