System Administrator

Paul Walsh

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Hi All,<br />
<br />
We use VMware VCenter and have two separate DC/DNS servers configured. We recently had to turn off one of the DC/DNS servers due to maintenance. During this time VCenter reported that all of the physical hosts were disconnected and took a very long time to log in. I could log directly into the physical host no problem. Once this secondary DC/DNS server was back up everything was happy.<br />
<br />
I have checked the VCenter settings and the second server was set as the preferred DNS server, so I have swapped this around.<br />
<br />
Are there any other settings that I need to change to ensure that the first DC/DNS server is always used. Secondly is there a problem, as it seems a little counter productive to have two servers configured in vCenter but if one is off it still wont work correctly?<br />
<br />
Cheers,<br />
Paul
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Hi All,

We use VMware VCenter and have two separate DC/DNS servers configured. We recently had to turn off one of the DC/DNS servers due to maintenance. During this time VCenter reported that all of the physical hosts were disconnected and took a very long time to log in. I could log directly into the physical host no problem. Once this secondary DC/DNS server was back up everything was happy.

I have checked the VCenter settings and the second server was set as the preferred DNS server, so I have swapped this around.

Are there any other settings that I need to change to ensure that the first DC/DNS server is always used. Secondly is there a problem, as it seems a little counter productive to have two servers configured in vCenter but if one is off it still wont work correctly?

Cheers,
Paul

VCenter multiple Dc/DNS Servers

The Domain Name System (DNS) is a hierarchical, globally distributed system responsible for associating the name of a computer, service or other resource into an IP address for connecting to the Internet or a private network. Most prominently, it translates domain names to the numerical IP addresses needed for the purpose of computer services and devices worldwide.

VMware, a software company founded in 1998,  was one of the first commercially successful companies to offer x86 virtualization. The storage company EMC purchased VMware in 1994. Dell Technologies acquired EMC in 2016. VMware’s parent company is now Dell Technologies.

VMware has many software products that run on desktops, Microsoft Windows, Linux, and macOS, which allows the virtualizing of the x86 architecture.  Its enterprise software hypervisor for servers, VMware vSphere Hypervisor (ESXi), is a bare-metal hypervisor that runs directly on the server hardware and does not require an additional underlying operating system.