Enabling VPC network DHCP service and changing the DHCP service IP via zstack-cli

Applicable Scenario

• Product: ZStack Cloud
• Version: 4.2.x~4.8.x.
• Component: VPC Network, DHCP Service, zstack-cli, MariaDB UsedIpVO table
• Trigger/Condition: a VPC network was created without DHCP service, so existing VMs cannot obtain an IP. Or the DHCP service IP needs to be changed to a different address inside the IP range.

Problem Symptoms

• The VM fails to attach to the VPC network, or after a reboot the VM does not obtain an IP address from the VPC network.
• The L3 Network was created without the DHCP network service attached.

How to Confirm

1. In the UI, open the affected VPC L3 Network and check whether DHCP is in the attached network services.