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This articles is published 319 days ago and last updated 319 days ago, some information may be out of date.

Renew DNS Servers in VMWare ESXi via ESXCLI Commands

esxi-dns-update.jpg

About Issue

If you need to renew DNS servers on an ESXi host and are having trouble finding the DNS field in the ESXi portal, you can use ESXCLI commands to update the DNS servers.

Procedure

  1. Enable SSH Service first on ESXi

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  1. Open a console or SSH session to the ESXi host.
ssh root@esxi_ip_address
  1. List Current DNS server IP Address

Run the command

esxcli network ip dns server list
DNSServers: 10.1.1.253, 10.1.1.254
  1. Add new DNS server IP address
In this scenario, I use 1.1.1.1 and 1.0.0.1 as the new DNS server address.
esxcli network ip dns server add --server=1.1.1.1
esxcli network ip dns server add --server=1.0.0.1
  1. Remove the exsiting (old) DNS address
Refer to previous list the DNS address (10.1.1.253, 10.1.1.254)
esxcli network ip dns server remove --server=10.1.1.253
esxcli network ip dns server remove --server=10.1.1.254
  1. List Current DNS server IP Address after update.
esxcli network ip dns server list
DNSServers: 1.1.1.1, 1.0.0.1
  1. Finally diable SSH Service on ESXi

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Conclusion

Using the ESXCLI commands to update DNS servers is particularly useful when the DNS field is not easily accessible in the ESXi portal, or when there are a large number of ESXi hosts to update.

Reference