I did some research and found out about 90% of my hosts had the old vCenter Server IP address in vpxa.cfg. However, a user reported his remote console for some VMs would freeze after about 30-45 seconds and I also noticed some vDSs had sync issues. All ESXi hosts and VMs appeared to be happy.
Delete the original and cloned vCenter Servers at the source.Toggle the port groups if needed to restore connectivity.Verify if the vCenter Server vNIC is connected.Change the DNS records for the vCenter Server.Ensure to verify and/or make the following changes in Converter.Migrate the vCenter Server with VMware vCenter Converter Standalone to the destination ESXi host.The new IP address was displayed in the vCenter Server console.Change the IP address of the vCenter Server.
I did not need it, but you might depending on your destination.If only using a vDS, verify you have a port group with ephemeral binding.I always like to do this before big vCenter Server work so that I know where all my VMs are at.This was only a failsafe if the vCenter Server does not work at the destination to avoid restoring from a backup.This was for a 6.7 vCenter Server appliance with an embedded PSC. Here are the steps I went through and then an issue I ran into. Unfortunately, the destination network was not available at the source. However, to add a complication in my situation, I also needed to migrate the vCenter Server. The process of changing a vCenter Server’s IP address became a straightforward process in vSphere 6.5. A new IP address was required for the vCenter Server at the destination. I needed to migrate a vCenter Server between datacenters. See Configuring a site using a Dynamic Discovery connection. This has significant advantages for scanning. However, with VMware Tools, these target assets can be included in dynamic sites. Assets can be discovered and will appear in discovery results if they do not have VMware Tools installed. Make sure that virtual machines in the target environment have VMware Tools installed on them. As a best practice, it is recommended that the account have read-only access. If you assign permissions on a folder in the target environment, you will not see the contained assets unless permissions are also defined on the parent resource pool. Make sure that the account has permissions at the root server level to ensure all target virtual assets are discoverable. When creating a discovery connection, you will need to specify account credentials so that the application can connect to vCenter or the ESX/ESXi host. Make sure that port 443 is open on the vCenter or virtual machine host because the application needs to contact the target in order to initiate the connection. If Nexpose and your target vCenter or virtual asset host are in different subnetworks that are separated by a device such as a firewall, you will need to make arrangements with your network administrator to enable communication, so that the application can perform Dynamic Discovery. To perform Dynamic Discovery, the Security Console initiates connections to the vSphere application program interface (API) via HTTPS. You must configure your VMware vSphere deployment to communicate through HTTPS. The application supports direct connections to the following ESX(i) versions: To determine if the application supports a connection to an ESX(i) host that is managed by vCenter, consult VMware’s interoperability matrix at. To perform dynamic discovery in VMware environments, Nexpose can connect to either a vCenter server or directly to standalone ESX(i) hosts. Preparing the target VMware environment for Dynamic Discovery Once you initiate Dynamic Discovery it continues automatically as long as the discovery connection is active. In response to these challenges the application supports dynamic discovery of virtual assets managed by VMware vCenter or ESX/ESXi.
If you know what scan targets you have at any given time, you know what and how to scan.
To manage their security effectively you need to keep track of important details: For example, which virtual machines have Windows operating systems? Which ones belong to a particular resource pool? Which ones are currently running? Having this information available keeps you in synch with the continual changes in your virtual asset environment, which also helps you to manage scanning resources more efficiently.
Merely keeping track of virtual assets and their various states and classifications is a challenge in itself. Discovering Virtual Machines Managed by VMware vCenter or ESX/ESXiĪn increasing number of high-severity vulnerabilities affect virtual targets and devices that support them, such as the following: