docker上配置nginx負載均衡

採用ubuntu系統，docker安裝自行百度

1.安裝tomcat

docker run -d -p 8088:8080 tomcat docker run -d -p 8089:8080 tomcat

安裝兩個實例，端口分別爲8088,8089

2.安裝nginx

docker run -p 8080:80 -d docker.io/nginx

安裝nginx，端口爲8080。在測試的過程當中，發現ubuntu上對80端口有限制，不能直接訪問，因此映射爲8080

3.修改nginx配置

3.1查看實例

sudo docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 516b1562b0e3 nginx "nginx -g 'daemon of…"   21 minutes ago      Up 2 minutes        0.0.0.0:8080->80/tcp musing_dewdney 36e48585253f        tomcat              "catalina.sh run"        About an hour ago   Up About an hour    0.0.0.0:8089->8080/tcp keen_wescoff 7eb77e6a33e5 tomcat "catalina.sh run"        About an hour ago   Up About an hour    0.0.0.0:8088->8080/tcp frosty_grothendieck 2069f54ea331 mysql:5.7           "docker-entrypoint.s…"   3 hours ago         Up 3 hours          0.0.0.0:3306->3306/tcp, 33060/tcp   mysqltest

3.2進入nginx的bash

sudo docker exec -it 516b1562b0e3 bash

3.3修改配置

#user nobody; worker_processes 1; #error_log logs/error.log; #error_log logs/error.log notice; #error_log logs/error.log  info; #pid logs/nginx.pid; events { worker_connections 1024; } http { include mime.types; default_type application/octet-stream; proxy_buffer_size 128k; proxy_buffers 32 128k; proxy_busy_buffers_size 128k; sendfile on; #tcp_nopush on; #keepalive_timeout 0; keepalive_timeout 65; #gzip on; # 注意，這裏的server名字即org.tonny.balance不能帶下劃線，tomcat是上面安裝的tomcat upstream org.tonny.balance { server 192.168.126.128:8088 weight=1; server 192.168.126.128:8089 weight=1; } server { #注意，這裏保留80，由於前面的docker運行命令，會映射80端口 listen 80; server_name localhost; #charset koi8-r; #access_log logs/host.access.log main; # 不帶數據的請求 location / { root html; index index.html index.htm; #訪問映射 proxy_pass http://org.tonny.balance; 
 } #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; } } }

3.4重啓nginx

sudo docker restart 516b1562b0e3

4.測試

經過ip,端口訪問便可