Site pairing fails with error "Unable to connect to Site Recovery Manager Server Reason: https://vcenterfqdn:443/drserver/vcdr/vmomi/sdk invocation failed with "java.net.SocketTimeoutException: milliseconds timeout.

Products

• VMware Live Recovery

Issue/Introduction

• VMware Live Site Recovery (VLSR) site pairs are not communicating.

• Attempting to log into the Live Site Recovery admin portal results in an "HTTP/1.1 503 Service Unavailable" error.
  
  

• A server error message is displayed when attempting to retrieve site pairs: "A server error occurred, Check the server logs for more details."

• The Site Recovery UI displays the VLR state as "Disconnected" or "Unknown" following appliance reconfiguration

• Reconnection attempts to the site pair fail with the following error: "Unable to connect to VMware Live Site Recovery at https://<vCenter_FQDN>:443/drserver/vcdr/vmomi/sdk"

Environment

VMware Live Site Recovery 9.x

Cause

 The issue is caused by invalid or incorrectly configured DNS IP addresses within the VLR/VLSR appliance configuration.
This incorrect network setting prevents the appliance from resolving or communicating with the remote extension server and the vCenter Lookup Service, leading to service initialization failures.

From VLR, /var/log/vmware/dr/drconfig.log there is an event for "timeout on connection"
srm-reactive-thread-92] WARN com.vmware.dr.ui.tools.reactive. impl. PromiseImpl -####-######-####-####-####-#### probeServices - Function
'com.vmware.dr.client.shared.pairing.ProbeServicesRequestHandler$$Lambda/0x00007f8c5d030000@######' failed.
com.vmware.vim.vmomi.client.exception.ConnectionException: Unable to connect to Site Recovery Manager Server at https://vcenterfqdn:443/drserver/vcdr/vmomi/sdk. Reason: https://vcenterfqdn:443/drserver/vcdr/vmomi/sdk invocation failed with
"java.net.SocketTimeoutException: 30,000 milliseconds timeout on connection http-outgoing-145 [ACTIVE]"

From VLR DR VAMI(5480) > Network Settings, Incorrect DNS Servers.

From VLR PROD VAMI(5480) > Network Settings, Valid DNS Servers.

Resolution

1. Log in to the VLR VAMI interface (typically port 5480).

2. Navigate to the Network settings.

3. Verify the configured DNS IP addresses. Remove any incorrect or unreachable DNS server entries.

4. Navigate to the Summary tab.

5. Click Reconfigure to refresh the appliance registration with the corrected network parameters.

6. In the vSphere Client, navigate to Site Recovery > Open Site Recovery.

7. Select the affected Site Pair and perform a Reconnect operation.

Additional Information

For further assistance or if the issue persists, visit Broadcom Support to create a support case.