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For a VxRail cluster using external vCenter, the VxRail plugin is giving an error which is "The VxRail manager server may be unreachable, please check, and try again later." however the legacy UI is working. To identify this issue, SSH to vCenter and check the following file. /var/log/vmware/vsphere-ui/logs/vsphere_client_virgo.log We find errors like: [2020-04-12T09:03:54.210+02:00] [ERROR] p-nio-127.0.0.1-5090-exec-62 com.vmware.vxrail.mvc.ServiceProxyController Error occurred when calling VxRail Manager REST API org.apache.http.conn.HttpHostConnectException: Connect to vCENTERIP:443 [/xx.xxx.xx.xxx] failed: Connection timed out (Connection timed out)Caused by: java.net.ConnectException: Connection timed out (Connection timed out) at java.net.PlainSocketImpl.socketConnect(Native Method)
This issue is caused when ports 443 and 80 are closed from the vCenter side to the VxRail side and these two ports must be opened both ways between VxRail manager and vCenter. To check the status of the ports SSH to vCenter IP and run the following command: $ curl -v telnet://<VxRail_IP>:portYou would need to replace <VxRail_IP> with your current IP and the port to 80 one time and 443 another time- If the curl command worked, it will give a connected state which means that the port is opened. - If the curl command didn't work, it will give a failed message which means that the port is closed.
Open both ports 443 and 80 between vCenter and VxRail and then check again the plugin. Ensure that the docker services are up: If VxRail = > 7.0.370: kubectl get deploy -o wide If VxRail = < 7.0.350: docker service ls
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