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Centos 6：启动 NIC 会导致现有 NIC 出现问题

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Centos 6：启动 NIC 会导致现有 NIC 出现问题

我有一台 CentOS 6 机器，用于运行 Nagios。它是一台 Dell PowerEdge 服务器，不在保修范围内，有 2 个板载 NIC 和 2 个卡。它已经运行 Nagios 几个月了，运行良好。2 个板载 NIC 正在运行，而第 2 对处于非活动状态。

最近，我从 eesensors.com 获得了一个水/温度/光传感器，它可以插入 NIC 并与 Nagios 兼容。我编译了 Nagios 插件，将其连接到第二个 NIC 之一，按照似乎合适的方式配置了“ifcfg-p3p1”(*)，然后运行了“ifup-p3p1”。

此时，“ifconfig”显示新端口已启动，数据包正在通过。同时，原始端口似乎停止工作。Apache 没有响应，Nagios 报告每次测试的错误。我仍然可以通过 SSH 与服务器通信。要解决此问题，我必须重新启动网络，这将启动 eth1 但不启动 p3p1。

所以 -

  • 我在启动附加端口时做错了什么？
  • 为什么我的 HTTPD 等服务会停止响应，即使 SSH 可以工作？我认为如果 NIC 坏了，那么 SSH 也会随之坏掉。
ifcfg-p3p1:    
    DEVICE=p3p1   
    HWADDR=00:0E:0C:xx:xx:xx    
    ONBOOT=no    
    BOOTPROTO=static    
    IPADDR=192.168.0.1   
    NETMASK=255.255.255.0   
    GATEWAY=192.168.0.2    

ifcfg-eth1:    
    DEVICE="eth1"   
    HWADDR="00:14:22:xx:xx:xx"   
    NM_CONTROLLED="yes"  
    ONBOOT="yes"  
    IPADDR=10.127.24.21  
    GATEWAY=10.127.24.1  
    NETMASK=10.127.254.0  
    NETWORK=10.127.24.0  
    TYPE=ETHERNET  


[root@orange network-scripts]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
   valid_lft forever preferred_lft forever

2: eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000
link/ether 00:14:22:13:b7:f3 brd ff:ff:ff:ff:ff:ff

3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:14:22:13:b7:f4 brd ff:ff:ff:ff:ff:ff
inet 10.127.24.21/23 brd 10.127.25.255 scope global eth1
inet6 fe80::214:22ff:fe13:b7f4/64 scope link
   valid_lft forever preferred_lft forever

4: p3p1: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000
link/ether 00:0e:0c:71:82:ae brd ff:ff:ff:ff:ff:ff

5: p3p2: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000
link/ether 00:0e:0c:71:82:af brd ff:ff:ff:ff:ff:ff

[root@orange network-scripts]# ip route
10.127.24.0/23 dev eth1  proto kernel  scope link  src 10.127.24.21
169.254.0.0/16 dev eth1  scope link  metric 1003
default via 10.127.24.1 dev eth1

[root@orange network-scripts]# ifup p3p1

[root@orange network-scripts]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
   valid_lft forever preferred_lft forever

2: eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000
link/ether 00:14:22:13:b7:f3 brd ff:ff:ff:ff:ff:ff

3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:14:22:13:b7:f4 brd ff:ff:ff:ff:ff:ff
inet 10.127.24.21/23 brd 10.127.25.255 scope global eth1
inet6 fe80::214:22ff:fe13:b7f4/64 scope link
   valid_lft forever preferred_lft forever

4: p3p1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0e:0c:71:82:ae brd ff:ff:ff:ff:ff:ff
inet 192.168.0.1/24 brd 192.168.0.255 scope global p3p1
inet6 fe80::20e:cff:fe71:82ae/64 scope link
   valid_lft forever preferred_lft forever

5: p3p2: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000
link/ether 00:0e:0c:71:82:af brd ff:ff:ff:ff:ff:ff

[root@orange network-scripts]# ip route
192.168.0.0/24 dev p3p1  proto kernel  scope link  src 192.168.0.1
10.127.24.0/23 dev eth1  proto kernel  scope link  src 10.127.24.21
169.254.0.0/16 dev eth1  scope link  metric 1003
169.254.0.0/16 dev p3p1  scope link  metric 1004
default via 192.168.0.2 dev p3p1

答案1

删除此行：

GATEWAY=192.168.0.2

那里没有门户！

如果指定一个实际上不是网关的 IP 地址作为网关，那么任何需要使用网关的服务都将中断。

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