kvm虚拟机配置出错信息

<network>
        <name>default</name>
        <bridge name="virbr0" />
        <forward mode="nat"/>
        <ip address="10.7.153.196" netmask="255.255.255.0">
          <dhcp>
            <range start="10.7.153.2" end="10.7.153.254" />
          </dhcp>
        </ip>       
</network>

<network>
  <name>default</name>
  <uuid>e5504b1c-c6ab-ee16-7f4f-d288093cff38</uuid>
  <forward mode='route'/>
  <bridge name='virbr0' stp='on' delay='0' />
  <ip address='10.7.153.196' netmask='255.255.255.0'>
    <dhcp>
      <range start="10.7.153.2" end="10.7.153.254" />
      <host mac="00:21:cc:c0:5f:48" name="guest.example.com" ip="10.7.153.190" />
    </dhcp>
  </ip>
</network>


<network>
    <name>host-bridge</name>
    <forward mode="bridge"/>
    <bridge name="br0"/>
    <ip address="10.7.153.196" netmask="255.255.255.0">
    <dhcp>
      <range start="10.7.153.2" end="10.7.153.254" />
      <host mac='00:21:cc:c0:5f:48' name='vm-1' ip='10.7.153.190' />     
    </dhcp>
  </ip>
</network>



  <protocol family='ipv4'>
    <dhcp peerdns='yes'/>
    <ip address='10.7.153.196'/>
    <ip address='255.255.255.0'/>
    <route gateway='10.7.153.254'/>
  </protocol>





network.xml备份
<network>
  <name>network_vmm1</name>
  <uuid>850e02d5-e52a-e81d-a7e4-c47516c1382e</uuid>
  <forward mode='nat'/>
  <bridge name='virbr1' stp='on' delay='0' />
  <mac address='52:54:00:65:98:E3'/>
  <ip address='192.168.100.1' netmask='255.255.255.0'>
    <dhcp>
      <range start='192.168.100.128' end='192.168.100.254' />
    </dhcp>
  </ip>
</network>




一:
default网络不启动
不知道这么回事，启动虚拟网卡出错

[root@my ~]#virsh net-start default

error: Failed to start network default

error: internal error Child process (/usr/sbin/dnsmasq --strict-order --local=// --domain-needed --pid-file=/var/run/libvirt/network/default.pid --conf-file= --except-interface lo --bind-interfaces --listen-address 192.168.122.1 --dhcp-range 192.168.122.2,192.168.122.254 --dhcp-leasefile=/var/lib/libvirt/dnsmasq/default.leases --dhcp-lease-max=253 --dhcp-no-override --dhcp-hostsfile=/var/lib/libvirt/dnsmasq/default.hostsfile --addn-hosts=/var/lib/libvirt/dnsmasq/default.addnhosts) unexpected exit status 3:

dnsmasq: failed to open pidfile /var/run/libvirt/network/default.pid: Permission denied




权限问题，查看了下selinux，果然。。

SELINUX=enforcing


关闭下selinux，打开  vi /etc/selinux/config   修改

SELINUX=enforcing   ----> SELINUX=disabled

【重启服务器才能生效】

同时执行命令：

setenforce 0

【即时生效】



重新启动下虚拟网卡

[root@my ~]# virsh net-start default

Network default started


[root@my ~]# brctl show

bridge name     bridge id               STP enabled     interfaces

virbr0          8000.5254008b7f89       yes             virbr0-nic



OK了。


二:

错误：internal error Process exited while reading console log output: Supported machines are:
pc         RHEL 6.4.0 PC (alias of rhel6.4.0)


<type arch='x86_64' machine='rhel6-0'>hvm</type>//修改成对应的机器配置