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14:46分发现wind(6.147)死机,重起主机后发现从登陆服务器上无法登陆,通过kvm登陆,重起,结果仍是如此。查看netstat –nr输出
[root@wind network-scripts]# netstat -nr
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
1.1.6.128 0.0.0.0 255.255.255.192 U 40 0 0 eth1
127.0.0.0 0.0.0.0 255.0.0.0 U 40 0 0 lo
0.0.0.0 1.1.6.190 0.0.0.0 UG 40 0 0 eth1
结果正常,但还是无法ping 通1.1.6.190
查看/var/log/messages,提示
Jan 28 15:23:34 wind kernel: bcm5700: eth0 NIC Link is DOWN
以为网卡坏,检查ping自己,发现正常,以为是连接wind的switch端口坏,去机房查看,发现指示灯为绿色,应正常,更换在switch上的端口,问题依旧!
#more ifcfg-eth0
DEVICE=eth0
BOOTPROTO=static
IPADDR=1.1.6.147
NETMASK=255.255.255.192
GATEWAY=1.1.6.190
ONBOOT=yes
# more ifcfg-eth1
DEVICE=eth1
BOOTPROTO=static
IPADDR=1.1.6.147
NETMASK=255.255.255.192
GATEWAY=1.1.6.190
ONBOOT=no
[root@wind network-scripts]ifconfig -a
eth0
Link encap:Ethernet HWaddr 00:06:5B:8C:EB:8B
inet addr:1.1.6.147 Bcast:1.1.6.191 Mask:255.255.255.192
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:40243 errors:0 dropped:0 overruns:0 frame:0
TX packets:39323 errors:1 dropped:0 overruns:0 carrier:0
collisions:359 txqueuelen:100
RX bytes:5284573 (5.0 Mb) TX bytes:23082943 (22.0 Mb)
Interrupt:29
eth1 Link encap:Ethernet HWaddr 00:06:5B:8C:EB:8A
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:40243 errors:0 dropped:0 overruns:0 frame:0
TX packets:39323 errors:1 dropped:0 overruns:0 carrier:0
collisions:359 txqueuelen:100
RX bytes:5284573 (5.0 Mb) TX bytes:23082943 (22.0 Mb)
Interrupt:28
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:118 errors:0 dropped:0 overruns:0 frame:0
TX packets:118 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:10884 (10.6 Kb) TX bytes:10884 (10.6 Kb)
证明现在起用的是eth0,利用ifdown ,ifup命令反复将eth0 down 再up问题还是依旧,此时王伟怀疑server上的eth0,eth1上的接线有误,将eth0,eth1的配置更改过来,再执行ifdown eth1,ifdown eth1,就正常!
[root@wind network-scripts]# more ifcfg-eth0
DEVICE=eth0
BOOTPROTO=static
IPADDR=1.1.6.147
NETMASK=255.255.255.192
GATEWAY=1.1.6.190
ONBOOT=no
You have new mail in /var/spool/mail/root
[root@wind network-scripts]# more ifcfg-eth1
DEVICE=eth1
BOOTPROTO=static
IPADDR=1.1.6.147
NETMASK=255.255.255.192
GATEWAY=1.1.6.190
ONBOOT=yes
[root@wind network-scripts]# ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:06:5B:8C:EB:8A
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:92468 errors:0 dropped:0 overruns:0 frame:0
TX packets:90404 errors:2 dropped:0 overruns:0 carrier:0
collisions:940 txqueuelen:100
RX bytes:12640169 (12.0 Mb) TX bytes:54586605 (52.0 Mb)
Interrupt:28
eth1 Link encap:Ethernet HWaddr 00:06:5B:8C:EB:8B
inet addr:1.1.6.147 Bcast:1.1.6.191 Mask:255.255.255.192
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:92468 errors:0 dropped:0 overruns:0 frame:0
TX packets:90404 errors:2 dropped:0 overruns:0 carrier:0
collisions:940 txqueuelen:100
RX bytes:12640169 (12.0 Mb) TX bytes:54586605 (52.0 Mb)
Interrupt:29
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:120 errors:0 dropped:0 overruns:0 frame:0
TX packets:120 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:11034 (10.7 Kb) TX bytes:11034 (10.7 Kb)
建议大家遇到这种问题,还是先检查网卡是否正常,工作正常的话用ifconfig 0a先看哪个网卡在工作,再去看主机上的网线是否接错(dell 网卡数字1表示eth0.2表示eth1).
两点疑惑:
1) 重起时系统报错:
ssh secure shell 2.3.0(non commercial version)
fatal : creating listener failed :port22 probably already in use.
用netstat -an来看22端口在.不知这个提示是什么意思?
开始我还以为是系统什么原因导致ssh 无法启动,导致登陆服务器无法连接该机器!
2) linux下用什么来看网卡已up呢? ifconfig的哪列输出能看出来.
我知道solaris里的ifconfig -a
lo0: flags=849 mtu 8232
inet 127.0.0.1 netmask ff000000
hme0: flags=863 mtu 1500 inet 1.1.6.68 netmask ffffffc0 broadcast 159.226.6.127
up就表示网卡已起来!
------------------------------2007.2.7日补充---------------------------------
和solaris一样,up的网卡在 ifconfig的输出中能看出来.如现在已UP起来的eth1,就有这行显示:
eth1 Link encap:Ethernet HWaddr 00:06:5B:8C:EB:8B
inet addr:1.1.6.147 Bcast:1.1.6.191 Mask:255.255.255.192
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:92468 errors:0 dropped:0 overruns:0 frame:0
TX packets:90404 errors:2 dropped:0 overruns:0 carrier:0
collisions:940 txqueuelen:100
RX bytes:12640169 (12.0 Mb) TX bytes:54586605 (52.0 Mb)
Interrupt:29
本文来自ChinaUnix博客,如果查看原文请点:http://blog.chinaunix.net/u/2005/showart_239103.html |
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