sites-available/default 不起作用了什么情况？怎么办？

把你的配置贴出来

修改之后NGINX重启了吗？

nginx.conf里怎么写的？

新版apache?

@gracece 以下default文件全文：
# You may add here your
# server {
# ...
# }
# statements for each of your virtual hosts to this file

##
# You should look at the following URL's in order to grasp a solid understanding
# of Nginx configuration files in order to fully unleash the power of Nginx.
# http://wiki.nginx.org/Pitfalls
# http://wiki.nginx.org/QuickStart
# http://wiki.nginx.org/Configuration
#
# Generally, you will want to move this file somewhere, and start with a clean
# file but keep this around for reference. Or just disable in sites-enabled.
#
# Please see /usr/share/doc/nginx-doc/examples/ for more detailed examples.
##

server {
listen 80; ## listen for ipv4; this line is default and implied
#listen [::]:80 default_server ipv6only=on; ## listen for ipv6

# root /usr/share/nginx/www;
# root /home/pi/www;
index index.php;

# Make site accessible from http://localhost/
server_name localhost;

if (!-e $request_filename){
rewrite ^(.*)$ /index.php$1 last;
}


location / {
# First attempt to serve request as file, then
# as directory, then fall back to displaying a 404.
try_files $uri $uri/ /index.html;
# Uncomment to enable naxsi on this location
# include /etc/nginx/naxsi.rules
}

location /doc/ {
alias /usr/share/doc/;
autoindex on;
allow 127.0.0.1;
allow ::1;
deny all;
}

# Only for nginx-naxsi used with nginx-naxsi-ui : process denied requests
#location /RequestDenied {
# proxy_pass http://127.0.0.1:8080;
#}

#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/www;
#}

# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
#
location ~ ..php(\/.)*$ {
# fastcgi_split_path_info ^(.+\.php)(/.+)$;
# # NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini
#
# # With php5-cgi alone:
# fastcgi_pass 127.0.0.1:9000;
# # With php5-fpm:
# fastcgi_pass unix:/var/run/php5-fpm.sock;
fastcgi_index index.php;
include fastcgi_params;
}

# deny access to .htaccess files, if Apache's document root
# concurs with nginx's one
#
#location ~ /\.ht {
# deny all;
#}
}


# another virtual host using mix of IP-, name-, and port-based configuration
#
#server {
# listen 8000;
# listen somename:8080;
# server_name somename alias another.alias;
# root html;
# index index.html index.htm;
#
# location / {
# try_files $uri $uri/ =404;
# }
#}


# HTTPS server
#
#server {
# listen 443;
# server_name localhost;
#
# root html;
# index index.html index.htm;
#
# ssl on;
# ssl_certificate cert.pem;
# ssl_certificate_key cert.key;
#
# ssl_session_timeout 5m;
#
# ssl_protocols SSLv3 TLSv1;
# ssl_ciphers ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv3:+EXP;
# ssl_prefer_server_ciphers on;
#
# location / {
# try_files $uri $uri/ =404;
# }
#}

@ryd994 以下nginx.conf文件全文：
user pi;
worker_processes 1;
pid /var/run/nginx.pid;

events {
worker_connections 128;
# 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
##

#include /etc/nginx/naxsi_core.rules;

##
# nginx-passenger config
##
# Uncomment it if you installed nginx-passenger
##

#passenger_root /usr;
#passenger_ruby /usr/bin/ruby;

##
# Virtual Host Configs
##

include /etc/nginx/conf.d/*.conf;
include /etc/nginx/sites-enabled/*;
}


#mail {
# # See sample authentication script at:
# # http://wiki.nginx.org/ImapAuthenticateWithApachePhpScript
#
# # auth_http localhost/auth.php;
# # pop3_capabilities "TOP" "USER";
# # imap_capabilities "IMAP4rev1" "UIDPLUS";
#
# server {
# listen localhost:110;
# protocol pop3;
# proxy on;
# }
#
# server {
# listen localhost:143;
# protocol imap;
# proxy on;
# }
#}

@anjunecha 整个系统都重启过了，sudo service nginx reload都不知道做过多少遍了……

@gracece 说明一下，我在root前边加了#号，因为测试时发现都不起作用，跟没加是一个效果，无论怎么写，根目录都定位到/var/www/

try_files $uri $uri/ /index.html;

难道不是这句的问题么

试试在 location / {}中加 root 和 index 配置。

server {
listen 80 default_server;
server_name _;
location / {
...
root /var/www;
index index.php;
...
}
}

加拓展名.conf

机上还有个apache？

加上 listen 80 default_server;

是不是在其他 conf 文件里定义了 default_server？

你确定sites-enabled目录下有这个文件么？如果有你确定是链接到sites-available目录下的这个文件么

@yangqi 已经改成了： try_files $uri $uri/ /index.php;
问题依旧……

@gracece 这个办法也还是没起作用…… 晕了…… 这问题到底出在哪儿了啊…… 怎么会这样啊……苍天啊，大地啊…… T。T

@avastms /sites-available/default.conf 这样吗？
nginx.conf里边有这么一句“include /etc/nginx/sites-enabled/*;”所以default文件名应该不用加.conf吧？

@vicesa 我去，好像你还真是说对了，貌似问题真是因为阿帕奇，可是我没有装过这个东西啊……倒是apt-get 的时候看到了一条命令install apache之类的语句，一闪而过，没看清楚，不过apache是肯定有的，我就想知道apt-get install nginx 的时候为什么会带上apache呢？
我现在该怎么卸载apache 啊？

现在“service apache stop”和“service apache status”都返回unrecognized service这个结果是怎么个回事？
whereis apache 只返回“apache：”没了
能直接卸载apache吗？

完了，彻底毁了……
apache是删除干净了，现在输入地址默认还是打开/var/www/index.html，在/var/www/下写的.php文件（内容是“<?php phpinfo(); ?>”）变成404了，index.php变成可被下载的文件了……

netstat 看看那个在侦听 80 端口

装过gitlab？

nginx -t

看看主配置文件路径对否

@ETiV gitlab是什么东西？没主动安装过，不过nginx -t是一切正常的。

@dant netstat -ano吗？还是什么命令属性？目前没看出来，回复是0.0.0.0:80

@sutking netstat -plnt

@dant 不知道怎么回事，现在default文件起作用了，但是所有的.php 页面在浏览器地址栏里输入后回车都变成了下载，而不是打开了……
这个怎么办？