server {
    listen                80;
    server_name           www;
    server_name           w1987.cn;
    server_name           www.w1987.cn;
    server_name           192.168.123.49;
    charset               utf-8;
    keepalive_timeout     75s;
    keepalive_requests    100;
    access_log            /mnt/sdb5/web/sites/www/log/nginx/access.log;
    error_log             /mnt/sdb5/web/sites/www/log/nginx/error.log;
    pagespeed             on;
    pagespeed             FileCachePath /mnt/sdb5/web/sites/www/cache/ngx_pagespeed;
    pagespeed             LowercaseHtmlNames on;
    pagespeed             PreserveUrlRelativity on;
    pagespeed             RespectVary on;
    pagespeed             XHeaderValue 'Powered By AppNode';
    pagespeed             EnableFilters remove_comments,collapse_whitespace,combine_css,rewrite_css,sprite_images,combine_javascript,rewrite_javascript,rewrite_images,lazyload_images,prioritize_critical_css,extend_cache;
    pagespeed             FileCacheCleanIntervalMs 3600;
    pagespeed             FileCacheSizeKb 102400;
    pagespeed             FileCacheInodeLimit 500000;
    pagespeed             AdminPath /pagespeed_admin;
    pagespeed             PurgeMethod PURGE;
    pagespeed             EnableCachePurge on;
    root                  /mnt/sdb5/web/sites/www/www/www;
    client_max_body_size  1000m;

    location / {
        index      index.html index.htm index.php;
        try_files  $uri $uri/ /index.php?$args;
    }

    location ~ '\.pagespeed\.([a-z]\.)?[a-z]{2}\.[^.]{10}\.[^.]+' {
        add_header  '' '';
    }

    location ~ ^/pagespeed_static/ {
    }

    location ~ ^/ngx_pagespeed_beacon$ {
    }

    location ~ ^/pagespeed_admin {
        allow  127.0.0.1;
        deny   all;
    }

    location ~ ^/.+\.php(/|$) {
        include                  conf.sitemgr.d/global/conf/fastcgi_params;
        fastcgi_index            index.php;
        fastcgi_param            SCRIPT_FILENAME /mnt/sdb5/web/sites/www/www/www$fastcgi_script_name;
        fastcgi_split_path_info  ^(.+\.php)(/.*)$;
        fastcgi_param            PATH_INFO $fastcgi_path_info;
        fastcgi_param            PATH_TRANSLATED $document_root$fastcgi_path_info;
        fastcgi_param            HOSTNAME $HOSTNAME;
        fastcgi_param            PATH /usr/local/bin:/usr/bin:/bin;
        fastcgi_param            TMP /tmp;
        fastcgi_param            TMPDIR /tmp;
        fastcgi_param            TEMP /tmp;
        fastcgi_read_timeout     60s;
        fastcgi_pass             unix:/mnt/sdb5/web/sites/www/php-pool/php-fpm.sock;
    }

    location ~* \.(js|css|png|jpg|jpeg|gif|ico|bmp|swf|eot|svg|ttf|woff|woff2)$ {
        expires        30d;
        log_not_found  off;
    }
}

问题 找到了    地址不对，怎么系统自己修改了 不明白 
  root                  /mnt/sdb5/web/sites/www/www/www
正确  root                  /mnt/sdb5/web/sites/www/www

没有修改。本身就多一个www目录