Since 8.0 has modified the configuration of multiple IPs for a single network card, this document is written for explanation.

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First you need to apply for an intranet IP

At this time, the console will have an extra intranet IP

Then apply for an elastic industrial network IP at the elastic EIP

Note: After the elastic public IP is bound to the instance, it is free. If it is not bound, an idle fee will be charged.

unbound

for binding

All the above processes are no different from the previous centos7

Server with changes

The configuration begins.

Single network card and multiple IP copy a secondary network card eth0:0 to eth0 during configuration

cp /etc/sysconfig/network-scripts/ifcfg-eth{0,0:0}

cp /etc/sysconfig/network-scripts/route6-eth{0,0:0}

Edit eth0:0

vim ifcfg-eth0:0

# dhcp is changed to static

BOOTPROTO=static

# eth0 is modified to eth0:0

DEVICE=eth0:0

Log out the MAC address

HWADDR=52:54:00:1b:64:88

IPADDR=10.0.0.4

NETMASK=255.255.0.0

GATEWAY=10.0.0.1

ONBOOT=yes

PERSISTENT_DHCLIENT=yes

TYPE=Ethernet

USERCTL=no

The IP viewing location is as follows

vim route6-eth0:0

default dev eth0:0

Centos8 restart the network card test does not take effect.

Restart command

The current environment needs to be restarted directly

The test is normal after restart

ip a test has been recognized normally