部署 Nginx 修改默认端口无效
跟据实战圣经部署项目 启动 nginx 的时候发现 80 端口被占用了，修改/etc/nginx/sites-available 下的 default
server {
listen 8083 default_server;
listen [::]:8083 default_server ipv6only=on;
root /usr/share/nginx/html;
index index.html index.htm;
把端口改为 8083，再重新启动后还是报 80 错
Starting nginx: nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
nginx: [emerg] still could not bind()
查了好多，都说修改重启服务就行了，可是我这就是改不过来，请问各位大哥，该怎么改？
https://ihower.tw/rails4/deployment.html
#1 楼 @yingce 刚才问了下同事，确定 80 被占用了，
tcp6 0 0 :::80 :::* LISTEN off (0.00/0/0)
nginx.conf 这个下面没有发现有关 80 端口的
user www-data;
worker_processes 4;
pid /run/nginx.pid;
events {
worker_connections 768;
# multi_accept on;
}
http {
##
# Basic Settings
##
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 65;
types_hash_max_size 2048;
# server_tokens off;
# server_names_hash_bucket_size 64;
# server_name_in_redirect off;
include /etc/nginx/mime.types;
default_type application/octet-stream;
##
# Logging Settings
##
access_log /var/log/nginx/access.log;
error_log /var/log/nginx/error.log;
##
# Gzip Settings
##
gzip on;
gzip_disable "msie6";
# gzip_vary on;
# gzip_proxied any;
# gzip_comp_level 6;
# gzip_buffers 16 8k;
# gzip_http_version 1.1;
# gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;
##
# nginx-naxsi config
##
# Uncomment it if you installed nginx-naxsi
1,1 Top
sudo ss -tulpn | gawk '{printf "%-6s %-9s %-19s %s\n", $1, $2, $5, $7}' 查下哪个进程占用了 80 端口。
- 查看端口占用情况，除了 ss, netstat，还可以：
lsof -i 80。解释 http://explainshell.com/explain?cmd=lsof+-i+80 - 查看 Nginx 配置，除了看所有的 conf（主配置，include 等），还可以：
sudo nginx -T
