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

1. Set the IP address of Linux

1. Understand three network card modes: bridge, NAT, stand-alone mode

two。 Select NAT mode

1). Vi / etc/sysconfig/network-script/ifcfg-eth0 is set to obtain the IP address automatically.

DEVICE=eth0

TYPE=Ethernet

ONBOOT=yes

NM_CONTROLLED=yes

BOOTPROTO=dhcp

2)。 Execute ip an or ifconfig to get the IP address, and route-n to get the routing information and get the gateway

DEVICE=eth0

TYPE=Ethernet

ONBOOT=yes

NM_CONTROLLED=yes

BOOTPROTO=static

IPADDR=192.168.128.128

NETMASK=255.255.255.0

GATEWAY=192.168.128.2

DNS1=114.114.114.114

3)。 Restart the network card service network restart

3. Name or Service not know error occurred during ping www.baidu.com, after troubleshooting

1) .IP address binds hostname

Cat / etc/hosts

192.168.128.128 Linux

2). Cat / etc/sysconfig/network

NETWORKING=yes

HOSTNAME=Linux

GATEWAY=192.168.128.2

NOZEROCONF=yes

3)。 Add a DNS server

Nameserver 114.114.114.114

Nameserver 114.114.114.115

4)。 Turn off the firewall

The following are versions prior to Cetos 7:

Temporarily Closed

Service iptables stop

Permanent shutdown

Chkconfig iptables off

View firewall status

Chkconfig-- list | grep iptables

The following is the version after Centos 7

Systemctl stop firewalld

Systemctl status firewalld

Systemctl disable firewalld

Systemctl enable firewalld

Systemctl start firewalld

5)。 Turn off security policy

View

Getenforce

Set up

Setenforce

Permanent shutdown

Vi / etc/selinux/config

SELINUX=disabled

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