Solution to the problem that Xshell cannot connect to the virtualBox virtual machine

First, let's explain the network setting mode of the virtualBox virtual machine: NAT+Host-Only mode

Selecting this mode can ensure that the virtual machine is connected to the external network, and the local computer is connected to the virtual machine.

Network 1: NAT mode

Network 2: Host-Only Mode

Enter the virtual machine and enter ifconfig to find that no IP is displayed:

But pinging Baidu is successful:

Therefore, it can be inferred that there is no problem with the NAT network, but there is a problem with Host-Only.

Normally, there should be information about two network cards, but currently there is only enp0s3, so we can reasonably infer that the Host-Only network card is not started.

Solution:

1. First, set enp0s3 to start automatically at boot

vim /etc/sysconfig/network-scripts/ifcfg-enp0s3
Add ONBOOT="yes"

2. If there is no enp0s8, create enp0s8

cp enp0s3 enp0s8
vim enp0s8

The configuration is as follows:
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="3ec9eebb-f9e1-4e4a-8ea7-ae6c4df8c795"
DEVICE="enp0s8"
ONBOOT="yes"
IPADDR="192.168.56.105"

Note: The copied UUID needs to be modified to distinguish it from the one in ifcfg-en0s3.

3. Restart the network

systemctl restart network

4. Check the IP address and you will have it

At this point, you can use Xshell on your local computer to connect to the virtual machine. You can also connect to the Internet by pinging http://www.baidu.com.

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