How to set static IP in CentOS7 on VirtualBox6 and what to note

Install CentOS 7 after installing VirtualBox. I won’t go into details here. There are many tutorials online.

Shut down the virtual machine first and configure the network as follows

We need to use dual network cards here. We turn on the second network card as shown below

Then start the virtual machine and perform the following operations

# Enter the directory where the network card is located cd /etc/sysconfig/network-scripts/
# Back up network card information cp -rp /etc/sysconfig/network-scripts/ifcfg-enp0s3 /etc/sysconfig/network-scripts/ifcfg-enp0s3.bak
# Edit vi /etc/sysconfig/network-scripts/ifcfg-enp0s3, as follows TYPE="Ethernet"
PROXY_METHOD="none"
BROWSER_ONLY="no"
BOOTPROTO="dhcp"
DEFROUTE="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_FAILURE_FATAL="no"
IPV6_ADDR_GEN_MODE="stable-privacy"
NAME="enp0s3"
UUID="ee340a0f-1557-49c7-a927-5069c4e2ab88"
DEVICE="enp0s3"
ONBOOT="yes"

The above configuration is the information of the network card 1 we added. We will copy and modify it to the information of network card 2.

cp -rp /etc/sysconfig/network-scripts/ifcfg-enp0s3 /etc/sysconfig/network-scripts/ifcfg-enp0s8

TYPE="Ethernet"
PROXY_METHOD="none"
BROWSER_ONLY="no"
BOOTPROTO="static"
DEFROUTE="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_FAILURE_FATAL="no"
IPV6_ADDR_GEN_MODE="stable-privacy"
NAME="enp0s8"
UUID="cb7e712d-c2db-4dee-8950-37f9d8a780e9"
DEVICE="enp0s8"
ONBOOT="yes"
IPADDR="172.21.208.200"
NETMASK="255.255.252.0"
GATEWAY="172.21.208.1"
DNS1="8.8.8.8"

Note:

UUID should be replaced with your own. You can use the uuidgen command to generate it. Note that IPADDR, NETMASK, and GATEWAY in enp0s8 are not random. Since our network card 2 is in bridge mode, that is, it is equivalent to connecting the virtual machine and the host to the same network environment, you need to check the configuration of the host. Use WIN+R, type cmd+Enter to open the dos command line, and enter ipconfig /all to view the network configuration in the host, as shown below

Look carefully, the network segment configured in network card 2 is consistent with the network segment on the host. Use xshell to connect to the ip in network card 2.

Summarize

The above is the method and precautions for setting static IP in VirtualBox6 and CentOS7. I hope it will be helpful to you. If you have any questions, please leave me a message and I will reply to you in time. I would also like to thank everyone for their support of the 123WORDPRESS.COM website!
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