Shulou(Shulou.com)06/03 Report--

1. Check the IP information of the current environment configuration

2. Check whether the network configuration is correct.

[root@hadoop/] # cat / etc/sysconfig/network-scripts/ifcfg-eth0

The network profile IPADDR=192.168.1.226 / / IP address GATEWAY=192.168.1.1 / / gateway address DNS1=8.8.8.8 / / DNS resolution server NETMASK=255.255.255.0 / / subnet mask pointed to by DECIVE=eth0 / /

3. Whether the gateway set under ping can be connected by ping.

If the gateway cannot be connected, the gateway address under the / etc/sysconfig/network-scripts/ifcfg-eth0 file needs to be modified.

[root@hadoop/] # ping 192.168.1.1

4. Check whether the DNS server is correct and use the command

[root@hadoop etc] # cat resolv.conf

5. The DNS service configured by ping resolves the address to see if it can be ping. If it cannot be connected, it needs to be modified, but it must be guaranteed to be a normal and usable DNS address.

6. Only after the above configurations are correct, you can connect to the public network resources, and then test whether you can ping the public network resources.

[root@hadoop etc] # ping www.baidu.com

These are the details of linux's inability to connect to the external network. Please pay attention to other related articles for more information.

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