虚拟机centos系统，停机装第二块网卡，需要更改的配置。
问题描述： 虚拟机centos系统，停机装第二块网卡，发现 /etc/sysconfig/network-scripts/ifcfg-eth1 不存在。但 ifconfig 能够看到 eth1 中的 HWaddr 值。
[root@11gnode1 ~]# ifconfig eth0 Link encap:Ethernet HWaddr 00:0C:29:06:C9:21 inet addr:10.100.25.8 Bcast:10.255.255.255 Mask:255.0.0.0 inet6 addr: fe80::20c:29ff:fe06:c921/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:48 errors:0 dropped:0 overruns:0 frame:0 TX packets:43 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:5343 (5.2 KiB) TX bytes:5265 (5.1 KiB)
eth1 Link encap:Ethernet HWaddr 00:0C:29:06:C9:2B inet addr:11.101.26.129 Bcast:11.101.26.255 Mask:255.255.255.0 inet6 addr: fe80::20c:29ff:fe06:c92b/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:12 errors:0 dropped:0 overruns:0 frame:0 TX packets:21 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1772 (1.7 KiB) TX bytes:2366 (2.3 KiB)
lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:4 errors:0 dropped:0 overruns:0 frame:0 TX packets:4 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:240 (240.0 b) TX bytes:240 (240.0 b)
[root@11gnode1 ~]# vi /etc/sysconfig/network-scripts/ifcfg-eth1 [root@11gnode1 ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth1 cat: /etc/sysconfig/network-scripts/ifcfg-eth1: No such file or directory
解决办法： 经过实践，虚拟机centos系统，停机装第二块网卡，需要人工手动创建 eth1 文件。
1. 创建 eth1 文件，并根据 ifconfig 结果中的 HWADDR 值编辑文件。
[root@11gnode1 ~]# touch /etc/sysconfig/network-scripts/ifcfg-eth1 [root@11gnode1 ~]# vi /etc/sysconfig/network-scripts/ifcfg-eth1
2. 查看验证。 [root@11gnode1 ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth1 # Intel Corporation 82545EM Gigabit Ethernet Controller (Copper) DEVICE=eth1 BOOTPROTO=static BROADCAST=11.255.255.255 HWADDR=00:0C:29:06:C9:2B IPADDR=11.101.26.8 NETMASK=255.0.0.0 NETWORK=11.0.0.0 ONBOOT=yes
[root@11gnode1 ~]# ifconfig eth0 Link encap:Ethernet HWaddr 00:0C:29:06:C9:21 inet addr:10.100.25.8 Bcast:10.255.255.255 Mask:255.0.0.0 inet6 addr: fe80::20c:29ff:fe06:c921/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:466 errors:0 dropped:0 overruns:0 frame:0 TX packets:263 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:38918 (38.0 KiB) TX bytes:39087 (38.1 KiB)
eth1 Link encap:Ethernet HWaddr 00:0C:29:06:C9:2B inet addr:11.101.26.8 Bcast:11.255.255.255 Mask:255.0.0.0 inet6 addr: fe80::20c:29ff:fe06:c92b/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:118 errors:0 dropped:0 overruns:0 frame:0 TX packets:130 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:13188 (12.8 KiB) TX bytes:11382 (11.1 KiB)
lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:16 errors:0 dropped:0 overruns:0 frame:0 TX packets:16 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:960 (960.0 b) TX bytes:960 (960.0 b)
