Testing connection for the vCenter Integration fails with Error "Host Not Reachable" in VCF Operations

Products

• VMware vCenter Server

Issue/Introduction

• In VCF Operations Administration > Integrations > vCenter > Test Connection fails with error "Host Not Reachable" 
• When attempting to save the integration it may also fail with error "Unable to lookup VC Extension Information: https://vCenterFQDN/sso-adminserver/sdk/vsphere.local invocation failed with "java.net.UnknownHostException: vCenterFQDN: Temporary failure in name resolution": VC extensions info check task failed." 

 

Environment

VCF Operations 9.x 

VMware vCenter Server 9.x 

Resolution

• SSH into the VCF Operations appliance with root credentials and run the following command to check the DNS file:

vi /etc/systemd/network/10-eth0.network

• • Navigate to the network section of the file and it should look similar to this: 
    

    [Network]
    DHCP=no
    Domains=domain.local domain.local
    DNS=8.8.8.8
    

  • If the DNS section has the FQDN of the domain controller, edit this and change it to the IP of the DNS server and save. 
    • Restart the service on the VCF Operations appliance:

systemctl restart systemd-networkd 

• Test connection again on the VCF Operations UI 

Administration > Integrations > Click on the vCenter > Test Connection 

 

 

Additional Information

Reconfigure DNS and Domain Search on VCF Operations Nodes for Site Protection and Disaster Recovery for VMware Cloud Foundation