Created
October 21, 2013 05:03
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Cấu hình Centos sử dụng 2 gateway và đi ra ngoài mạng
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| 1. Sao chép cấu hình interface theo thứ tự, ifcfg-eth0:0 | |
| [root@Manlab network-scripts]# cp /etc/sysconfig/network-scripts/ifcfg-eth0 /etc/sysconfig/network-scripts/ifcfg-eth0:0 | |
| 2. cấu hình các tham số cấu hình file ifcfg-eth0:0 phù hợp với mong muốn | |
| - NAME | |
| - DEVICE | |
| - IPADDR | |
| - GATEWAY | |
| - DNS1/DNS2 | |
| 3. Restart lại service network là ok |
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| [root@Manlab network-scripts]# ifconfig | |
| eth0 Link encap:Ethernet HWaddr 00:1E:EC:E9:54:F5 | |
| inet addr:10.2.4.58 Bcast:10.2.4.255 Mask:255.255.255.0 | |
| inet6 addr: fe80::21e:ecff:fee9:54f5/64 Scope:Link | |
| UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 | |
| RX packets:261828 errors:0 dropped:0 overruns:0 frame:0 | |
| TX packets:120428 errors:0 dropped:0 overruns:0 carrier:0 | |
| collisions:0 txqueuelen:1000 | |
| RX bytes:267908235 (255.4 MiB) TX bytes:18202613 (17.3 MiB) | |
| eth0:0 Link encap:Ethernet HWaddr 00:1E:EC:E9:54:F5 | |
| inet addr:192.168.1.100 Bcast:192.168.1.255 Mask:255.255.255.0 | |
| UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 | |
| 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:16436 Metric:1 | |
| RX packets:10005 errors:0 dropped:0 overruns:0 frame:0 | |
| TX packets:10005 errors:0 dropped:0 overruns:0 carrier:0 | |
| collisions:0 txqueuelen:0 | |
| RX bytes:1088071 (1.0 MiB) TX bytes:1088071 (1.0 MiB) |
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| [root@Manlab network-scripts]# more ifcfg-eth0 | |
| TYPE=Ethernet | |
| BOOTPROTO=none | |
| DEFROUTE=yes | |
| IPV4_FAILURE_FATAL=yes | |
| IPV6INIT=no | |
| NAME="eth0" | |
| UUID=62531160-5cdf-4ae9-9d32-c272cc45d49c | |
| ONBOOT=yes | |
| HWADDR=00:1E:EC:E9:54:F5 | |
| PEERROUTES=yes | |
| LAST_CONNECT=1381225046 | |
| IPADDR=10.2.4.58 | |
| NETMASK=255.255.255.0 | |
| GATEWAY=10.2.4.1 | |
| DEVICE=eth0 | |
| USERCTL=no | |
| DNS1=8.8.8.8 | |
| DNS2=8.8.4.4 |
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| [root@Manlab network-scripts]# more ifcfg-eth0:0 | |
| TYPE=Ethernet | |
| BOOTPROTO=none | |
| DEFROUTE=yes | |
| IPV4_FAILURE_FATAL=yes | |
| IPV6INIT=no | |
| NAME="eth0:0" | |
| UUID=62531160-5cdf-4ae9-9d32-c272cc45d49c | |
| ONBOOT=yes | |
| HWADDR=00:1E:EC:E9:54:F5 | |
| PEERROUTES=yes | |
| LAST_CONNECT=1381225046 | |
| IPADDR=192.168.1.100 | |
| NETMASK=255.255.255.0 | |
| GATEWAY=192.168.1.1 | |
| DEVICE=eth0:0 | |
| USERCTL=no |
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| [root@Manlab network-scripts]# ping google.com | |
| PING google.com (113.171.244.251) 56(84) bytes of data. | |
| 64 bytes from localhost (113.171.244.251): icmp_seq=1 ttl=57 time=6.88 ms | |
| 64 bytes from localhost (113.171.244.251): icmp_seq=2 ttl=57 time=7.02 ms | |
| ^C | |
| --- google.com ping statistics --- | |
| 2 packets transmitted, 2 received, 0% packet loss, time 1692ms | |
| rtt min/avg/max/mdev = 6.885/6.956/7.028/0.109 ms | |
| [root@Manlab network-scripts]# ^C | |
| [root@Manlab network-scripts]# ping 192.168.1.1 | |
| PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data. | |
| 64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=1.43 ms | |
| 64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=0.347 ms | |
| 64 bytes from 192.168.1.1: icmp_seq=3 ttl=64 time=0.317 ms | |
| 64 bytes from 192.168.1.1: icmp_seq=4 ttl=64 time=0.333 ms | |
| 64 bytes from 192.168.1.1: icmp_seq=5 ttl=64 time=0.414 ms | |
| ^C | |
| --- 192.168.1.1 ping statistics --- | |
| 5 packets transmitted, 5 received, 0% packet loss, time 4789ms | |
| rtt min/avg/max/mdev = 0.317/0.568/1.432/0.433 ms |
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| [root@Manlab network-scripts]# route -n | |
| Kernel IP routing table | |
| Destination Gateway Genmask Flags Metric Ref Use Iface | |
| 10.2.4.0 0.0.0.0 255.255.255.0 U 1 0 0 eth0 | |
| 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 | |
| 0.0.0.0 10.2.4.1 0.0.0.0 UG 0 0 0 eth0 |
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| [root@Manlab network-scripts]# service network restart | |
| Shutting down interface eth0: [ OK ] | |
| Shutting down loopback interface: [ OK ] | |
| Bringing up loopback interface: [ OK ] | |
| Bringing up interface eth0: Active connection state: activated | |
| Active connection path: /org/freedesktop/NetworkManager/ActiveConnection/40 | |
| [ OK ] |
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