主页 / user-126492

Zim3r's questions

Martin Hope
Zim3r
Asked: 2013-10-01 23:59:25 +0800 CST
  • 2

在我的服务器状态页面中，我看到很多来自本地主机的请求。这些是干什么用的？他们真的在做什么吗？

201-0   -   0/0/327 .   0.94    28653   0   0.0 0.00    99.83   ::1 domain.com  OPTIONS * HTTP/1.0
202-0   -   0/0/140 .   1.65    28333   0   0.0 0.00    52.80   ::1 domain.com  OPTIONS * HTTP/1.0
203-0   -   0/0/359 .   3.15    28425   0   0.0 0.00    88.87   ::1 domain.com  OPTIONS * HTTP/1.0
204-0   -   0/0/353 .   4.16    28861   0   0.0 0.00    150.89  ::1 domain.com  OPTIONS * HTTP/1.0
205-0   -   0/0/382 .   0.18    28275   0   0.0 0.00    86.17   ::1 domain.com  OPTIONS * HTTP/1.0
206-0   -   0/0/242 .   1.19    28586   0   0.0 0.00    119.88  ::1 domain.com  OPTIONS * HTTP/1.0
207-0   -   0/0/260 .   1.06    28475   0   0.0 0.00    90.53   ::1 domain.com  OPTIONS * HTTP/1.0
208-0   -   0/0/381 .   4.92    28644   0   0.0 0.00    57.20   ::1 domain.com  OPTIONS * HTTP/1.0
209-0   -   0/0/172 .   0.81    28273   0   0.0 0.00    101.78  ::1 domain.com  OPTIONS * HTTP/1.0
210-0   -   0/0/277 .   1.76    28695   0   0.0 0.00    70.73   ::1 domain.com  OPTIONS * HTTP/1.0
211-0   -   0/0/776 .   6.57    20491   0   0.0 0.00    211.93  ::1 domain.com  OPTIONS * HTTP/1.0
linux
Martin Hope
Zim3r
Asked: 2013-02-13 04:47:25 +0800 CST
  • 0

“表单”身份验证在 web.config 中启用，但我仍然看到：

401 - Unauthorized: Access is denied due to invalid credentials.

You do not have permission to view this directory or page using the credentials that you supplied.

我认为这是一个文件权限问题。我刚刚向 IIS 添加了一个新网站。有什么我想念的吗？

asp.net
Martin Hope
Zim3r
Asked: 2012-11-12 03:33:01 +0800 CST
  • 0

我在 Proxmox VE 中添加了一个卷组作为 KVM 虚拟机的存储。将为每个 VM 创建一个新的逻辑卷，但在 Proxmox VE 的定义存储下显示创建的逻辑卷列表我看到我的逻辑卷标记为 RAW 格式。这是 RAW 图像还是逻辑卷 (LVM)？

但我的主要问题是，这真的避免了通过主机系统上的文件系统层的开销吗？

virtualization
Martin Hope
Zim3r
Asked: 2012-10-23 01:42:37 +0800 CST
  • 3

请假设有一个 PHP CMS 可以根据数据库中的 ID 检索内容。

因此，每次您访问该网站时，它都会与数据库交互并处理 PHP 请求。

Nginx 或 Varnish 可以在用户访问该页面后缓存和存储该页面吗？因此，下次如果有任何用户访问该页面，它将从缓存中加载。

php
Martin Hope
Zim3r
Asked: 2012-10-10 22:32:15 +0800 CST
  • 5

一旦 Bind 崩溃，我就崩溃了：tail -f /var/log/messages 我每秒都会看到大量日志。这是DNS攻击吗？或者有什么问题吗？

有时我会在日志中看到这样的域：dOmAin.com（上下）。如您所见，日志中只有一个域具有不同的 IP

Oct 10 02:21:26 mail named[20831]: client 74.125.189.18#38921: query (cache) 'ns1.domain2.com/A/IN' denied
Oct 10 02:21:26 mail named[20831]: client 192.221.144.171#38833: query (cache) 'domain.com/A/IN' denied
Oct 10 02:21:26 mail named[20831]: client 74.125.189.17#42428: query (cache) 'ns2.domain2.com/A/IN' denied
Oct 10 02:21:26 mail named[20831]: client 192.221.146.27#37899: query (cache) 'domain.com/A/IN' denied
Oct 10 02:21:26 mail named[20831]: client 193.203.82.66#39263: query (cache) 'domain.com/A/IN' denied
Oct 10 02:21:26 mail named[20831]: client 8.0.16.170#59723: query (cache) 'domain.com/A/IN' denied
Oct 10 02:21:26 mail named[20831]: client 80.169.197.66#32903: query (cache) 'dOmAin.com/A/IN' denied
Oct 10 02:21:26 mail named[20831]: client 134.58.60.1#47558: query (cache) 'domain.com/A/IN' denied
Oct 10 02:21:26 mail named[20831]: client 192.221.146.34#47387: query (cache) 'domain.com/A/IN' denied
Oct 10 02:21:26 mail named[20831]: client 8.0.16.8#59392: query (cache) 'domain.com/A/IN' denied
Oct 10 02:21:26 mail named[20831]: client 74.125.189.19#64395: query (cache) 'domain.com/A/IN' denied
Oct 10 02:21:26 mail named[20831]: client 217.72.163.3#42190: query (cache) 'domain.com/A/IN' denied
Oct 10 02:21:26 mail named[20831]: client 83.146.21.252#22020: query (cache) 'domain.com/A/IN' denied
Oct 10 02:21:26 mail named[20831]: client 192.221.146.116#57342: query (cache) 'domain.com/A/IN' denied
Oct 10 02:21:26 mail named[20831]: client 193.203.82.66#52020: query (cache) 'domain.com/A/IN' denied
Oct 10 02:21:26 mail named[20831]: client 8.0.16.72#64317: query (cache) 'domain.com/A/IN' denied
Oct 10 02:21:26 mail named[20831]: client 80.169.197.66#31989: query (cache) 'dOmAin.com/A/IN' denied
Oct 10 02:21:26 mail named[20831]: client 74.125.189.18#47436: query (cache) 'ns2.domain2.com/A/IN' denied
Oct 10 02:21:26 mail named[20831]: client 74.125.189.16#44005: query (cache) 'ns1.domain2.com/A/IN' denied
Oct 10 02:21:26 mail named[20831]: client 85.132.31.10#50379: query (cache) 'domain.com/A/IN' denied
Oct 10 02:21:26 mail named[20831]: client 94.241.128.3#60106: query (cache) 'domain.com/A/IN' denied
Oct 10 02:21:26 mail named[20831]: client 85.132.31.10#59118: query (cache) 'domain.com/A/IN' denied
Oct 10 02:21:26 mail named[20831]: client 212.95.135.78#27811: query (cache) 'domain.com/A/IN' denied

/etc/resolv.conf

; generated by /sbin/dhclient-script
nameserver 4.2.2.4
nameserver 8.8.4.4

绑定配置：

// generated by named-bootconf.pl

options {
        directory "/var/named";
        /*
         * If there is a firewall between you and nameservers you want
         * to talk to, you might need to uncomment the query-source
         * directive below.  Previous versions of BIND always asked
         * questions using port 53, but BIND 8.1 uses an unprivileged
         * port by default.
         */
        // query-source address * port 53;

        allow-transfer { none; };
        allow-recursion { localnets; };
        //listen-on-v6 { any; };
        notify no;
};

//
// a caching only nameserver config
//
controls {
        inet 127.0.0.1 allow { localhost; } keys { rndckey; };
};
zone "." IN {
        type hint;
        file "named.ca";
};

zone "localhost" IN {
        type master;
        file "localhost.zone";
        allow-update { none; };
};

zone "0.0.127.in-addr.arpa" IN {
        type master;
        file "named.local";
        allow-update { none; };
};
linux
Martin Hope
Zim3r
Asked: 2012-10-01 21:07:53 +0800 CST
  • 0

我有一个带有 4GB Ram 和 4GB /tmp 空间的 cPanel 服务器。我总是收到此错误：

这会导致性能下降吗？我可以删除所有内容吗？

Drive Critical: /tmp (/var/tmp) is 95% full

Drive Critical: /usr/tmpDSK (/tmp) is 95% full
linux
Martin Hope
Zim3r
Asked: 2012-09-17 04:04:19 +0800 CST
  • 1

我试图用这个命令创建一个原始图像：

qemu-img create -f raw -o size=200G,preallocation=metadata file.img

但似乎它的原始图像不支持预分配。如果是这样，为什么这张图表中有原始 + 预分配？

# qemu-img create -f raw -o size=200G,preallocation=full file.img
Unknown option 'preallocation'
Invalid options for file format 'raw'.
linux
Martin Hope
Zim3r
Asked: 2012-09-17 00:02:24 +0800 CST
  • 5

我打算将 LVM 用于 KVM，当我尝试创建 VG 时失败了，那么如何创建我的 VG 和 LV 呢？

谢谢

[root@server ~]# vgcreate virtual-machines /dev/sda
  Device /dev/sda not found (or ignored by filtering).
  Unable to add physical volume '/dev/sda' to volume group 'virtual-machines'.
[root@server ~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda3             2.0T  929G  976G  49% /
tmpfs                 3.9G  124K  3.9G   1% /dev/shm
/dev/sda1             194M   57M  128M  31% /boot
[root@server ~]# pvscan
  No matching physical volumes found
linux
Martin Hope
Zim3r
Asked: 2012-09-14 06:48:58 +0800 CST
  • 0

我的 KVM 有网络问题。

服务器上只有一台虚拟机，端口速度为100兆每秒

但最大下载速率约为每秒 1 兆字节，预计为 10 兆字节。

我使用 virtio 并且驱动程序已安装并加载到内核中。

我尝试了其他 NIC 但没有改变，我在主机上使用桥接网络。

那么如何解决这种缓慢的性能呢？

linux