Tag: Summary

切换到/var/，也可以到其他的目录

#cd /var/

创建一个524288kB的swapfile
PS：可以用这个命令来查看你硬盘操作文件的速度

root@www:/var# dd if=/dev/zero of=swapfile bs=1024 count=524288

524288+0 records in
524288+0 records out
536870912 bytes (537 MB) copied, 11.9503 s, 44.9 MB/s
使用mkswap把文件变为swap格式，这时会显示uuid

root@www:/var# /sbin/mkswap swapfile

mkswap: swapfile: warning: don’t erase bootbits sectors on whole disk. Use -f to force.
Setting up swapspace version 1, size = 524284 KiB
no label, UUID=6c026854-1d78-48ef-9bd4-9f67a17a471f
开启这个交换空间

root@www:/var# /sbin/swapon swapfile

当不想使用交换文件的时候

先用 swapon -s查看都有哪些swap设备，如下，我的有一个物理分区和一个文件型的swap

root@www:/var# swapon -s

Filename                                Type            Size    Used    Priority
/dev/sda2                               partition       1048568 23844   -1
/var/swapfile                           file            524280  0       -2

或查看 /proc/swaps

cat /proc/swaps

接下来关掉swapfile并删除

swapoff /var/swapfile
rm /var/swapfile

:)EOT

apt-get的好是好，但是不是最新版，各种路径都不熟悉

其实是通过locate nginx这个命令来找到这些目录，然后移除

以下是我的一些命令

rm -rf /etc/nginx/
rm -rf /usr/sbin/nginx
rm -rf /usr/share/doc/nginx
rm -rf /var/log/nginx/
apt-get remove nginx*

:)EOT

静态目录重写

location /static/ {
root /var/www/application/blog;
if (-f $request_filename) {
rewrite ^/static/(.*)$  /static/$1 break;
}

判断文件或目录是否存在，不存在返回到首页

if (!-e $request_filename) {
 #rewrite ^/(.*)$ /blog/index.php last;
 #表示完成rewrite,url不变，而permanent是301重定向，会跳到主页url
 rewrite ^/(.*)$ /blog/index.php permanent;
 }

禁止直接访问uploads目录

location ~ ^/blog/wp-content/uploads/ {
        deny all;
        break;
}

图片防盗链

location ~* \.(gif|jpg|jpeg)$ {
valid_referers none blocked www.jpuyy.com jpuyy.com;
if ($invalid_referer) {
rewrite ^/(.*) http://www.jpuyy.com;
}
}

302跳转HTTP/1.1 302 Moved Temporarily

 rewrite ^/$ http://2014.jpuyy.com redirect; 

301跳转HTTP/1.1 301 Moved Permanently

 rewrite ^/2014/?$ /abc/index.php permanent;

:)EOT

前提是通过编译安装的nginx

首先创建好要使用的目录

mkdir sites-available sites-enabled

在nginx.conf里写http{}里加上一句

include sites-enabled/*;

先在sites-available里写好要用使用的配置文件，每一个配置文件写一个server{}

如：

server {
        listen       80;
        server_name  jpuyy.com;

        #charset koi8-r;
        root /var/www/jpuyy/jpuyy.com;

        location / {

            root /var/www/jpuyy/jpuyy.com;
            index  index.html index.htm index.php;
        }

        log_format jpuyy.com.logs '$remote_addr -$remote_user[$time_local]"$request" '
                                '$status $body_bytes_sent "$http_referer" '
                                '"$http_user_agent" $http_x_forard_for';
        access_log /usr/local/nginx/logs/jpuyy.com.log jpuyy.com.logs;

        #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;
        }

        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        location ~ \.php$ {
            fastcgi_pass   127.0.0.1:9000;
            fastcgi_index  index.php;
            fastcgi_param  SCRIPT_FILENAME  /var/www/jpuyy/jpuyy.com/$fastcgi_script_name;
            include        fastcgi_params;
        }

        location /RPC2 {
          include scgi_params;
          scgi_pass localhost:5000;
        }

}

然后进入sites-enabled

ln -s ../sites-available/jpuyy.com.conf

:)EOT