kvm 遇到的錯誤ERROR 驗證安裝位置出錯：打開 URL ftp://127.0.0.1/centos7u3 失敗：[Errno 111] 拒絕連接。Cannot set up guest

錯誤1：

The ERROR validation installation position ERROR: failed to open the URL ftp://127.0.0.1/centos7u3:111] [Errno rejected the connection.
ERROR 驗證安裝位置出錯：打開 URL ftp://127.0.0.1/centos7u3 失敗：[Errno 111] 拒絕連接。

我們需要找到正確的ip，virbr0裏面的ip纔是跟在ftp後面的。


如果還是報錯：

1.vsftpd是否正常啓動
[root@localhost ftp]# systemctl status vsftpd
● vsftpd.service - Vsftpd ftp daemon
   Loaded: loaded (/usr/lib/systemd/system/vsftpd.service; disabled; vendor preset: disabled)
   Active: active (running) since 一 2020-04-13 23:41:41 CST; 25min ago
  Process: 10088 ExecStart=/usr/sbin/vsftpd /etc/vsftpd/vsftpd.conf (code=exited, status=0/SUCCESS)
 Main PID: 10089 (vsftpd)
    Tasks: 1
   CGroup: /system.slice/vsftpd.service
           └─10089 /usr/sbin/vsftpd /etc/vsftpd/vsftpd.conf

4月 13 23:41:41 localhost.localdomain systemd[1]: Starting Vsftpd ftp daemon...
4月 13 23:41:41 localhost.localdomain systemd[1]: Started Vsftpd ftp daemon.

2.是否掛載成功
如果你掛載成功的話，找到你掛載的目錄（我這裏是/var/ftp/centos7u3）
該文件本來是空的，但是你掛載成功後會顯示鏡像文件裏面的內容
```[root@localhost ftp]# ls /var/ftp/centos7u3
CentOS_BuildTag  GPL       LiveOS    RPM-GPG-KEY-CentOS-7
EFI              images    Packages  RPM-GPG-KEY-CentOS-Testing-7
EULA             isolinux  repodata  TRANS.TBL

3.防火牆關閉
systemctl stop firewalld
[root@localhost ftp]# systemctl status firewalld
● firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor preset: enabled)
   Active: inactive (dead) since 一 2020-04-13 22:48:43 CST; 1h 22min ago
     Docs: man:firewalld(1)
  Process: 747 ExecStart=/usr/sbin/firewalld --nofork --nopid $FIREWALLD_ARGS (code=exited, status=0/SUCCESS)
 Main PID: 747 (code=exited, status=0/SUCCESS)

4月 13 22:46:36 localhost.localdomain systemd[1]: Starting firewalld - dynamic fir....
4月 13 22:46:37 localhost.localdomain systemd[1]: Started firewalld - dynamic fire....
4月 13 22:48:42 localhost.localdomain systemd[1]: Stopping firewalld - dynamic fir....
4月 13 22:48:43 localhost.localdomain systemd[1]: Stopped firewalld - dynamic fire....
Hint: Some lines were ellipsized, use -l to show in full.



## 錯誤2：
ERROR    內部錯誤：qemu unexpectedly closed the monitor: qemu: could not load kernel '/var/lib/libvirt/boot/virtinst-vmlinuz.B5eIh7': No such file or directory
正在刪除磁盤 'vm9.img'                                    |    0 B  00:00:00     
域安裝失敗，您可以運行下列命令重啓您的域：
'virsh start virsh --connect qemu:///system start vm9'
否則請重新開始安裝。
![在這裏插入圖片描述](https://img-blog.csdnimg.cn/20200413233207746.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM4ODAzOTg1,size_16,color_FFFFFF,t_70)
![在這裏插入圖片描述](https://img-blog.csdnimg.cn/20200413233338756.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM4ODAzOTg1,size_16,color_FFFFFF,t_70)
找了半天錯，最終終於找到了
![在這裏插入圖片描述](https://img-blog.csdnimg.cn/20200413233453308.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM4ODAzOTg1,size_16,color_FFFFFF,t_70)
我的這個鏡像文件才28M
![在這裏插入圖片描述](https://img-blog.csdnimg.cn/20200413233547935.png)
而這個文件本身是800M
![在這裏插入圖片描述](https://img-blog.csdnimg.cn/20200413233627741.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM4ODAzOTg1,size_16,color_FFFFFF,t_70)
我是直接拉過去的，所以導致鏡像文件傳輸失敗，而且還無法察覺。
因爲直接拉是不可能的了，所以我打開了finalshell，連接該虛擬機直接將鏡像文件重新上傳。
![在這裏插入圖片描述](https://img-blog.csdnimg.cn/20200413233918136.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM4ODAzOTg1,size_16,color_FFFFFF,t_70)
![在這裏插入圖片描述](https://img-blog.csdnimg.cn/20200413234012745.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM4ODAzOTg1,size_16,color_FFFFFF,t_70)
![在這裏插入圖片描述](https://img-blog.csdnimg.cn/20200413234430692.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM4ODAzOTg1,size_16,color_FFFFFF,t_70)
正常啓動



## 錯誤3：磁盤給的太小
storage configuration failed: Not enough free space on disks for automatic partitioning
![在這裏插入圖片描述](https://img-blog.csdnimg.cn/20200413234929627.png)
![在這裏插入圖片描述](https://img-blog.csdnimg.cn/20200413235314750.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM4ODAzOTg1,size_16,color_FFFFFF,t_70)
導致磁盤太小沒法繼續安裝。
![在這裏插入圖片描述](https://img-blog.csdnimg.cn/20200413235524478.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM4ODAzOTg1,size_16,color_FFFFFF,t_70)
![在這裏插入圖片描述](https://img-blog.csdnimg.cn/20200413235641661.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM4ODAzOTg1,size_16,color_FFFFFF,t_70)
![在這裏插入圖片描述](https://img-blog.csdnimg.cn/20200413235649603.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JhaWR1XzM4ODAzOTg1,size_16,color_FFFFFF,t_70)
第五項安全通過。