An unexpected error has occurred while accessing the Lifecycle Manager

Products

• VMware vCenter Server

Issue/Introduction

"An unexpected error has occurred" appears in Lifecycle Manager menu

The rest of the page is blank

vCenter is in ELM with one or more vCenters

The following is noted in /var/log/vmware/vsphere-ui/logs/vsphere_client_virgo.log:

[YYYY-MM-DDT##:##:##.###+0#:00] [WARN ]-nio-127.0.0.1-5090-exec-253 com.vmware.vum.client.remoting.impl.VumServiceImpl  Request failed com.vmware.vim.vmomi.client.exception.SslException:javax.net.ssl.SSLException: SSL handshake from 0.0.0.0/0.0.0.0:36504 to <ELM_VC_FQDN>/<ELM_VC_IP>:8084 failed in 15 ms

Environment

vCenter 8.0

Cause

Port 8084 isn't fully accessible between each vCenter in ELM

Resolution

For each vCenter in ELM; ensure each other vCenter is accessible over port 8084 - including SSL traffic.

To check that the connection is clear on both open port and SSL traffic, run the below command from vCenter SSH:

openssl s_client -connect <ELM_VC_FQDN>:8084

 

Example good output:

CONNECTED(00000003)
depth=1 CN = CA, DC = vsphere, DC = local, C = US, ST = California, O = vcenter.com, OU = VMware Engineering
verify return:1
depth=0 CN = vcenter.com, C = US
verify return:1
---
Certificate chain
 0 s:CN = vcenter.com, C = US
   i:CN = CA, DC = vsphere, DC = local, C = US, ST = California, O = vcenter.com, OU = VMware Engineering
   a:PKEY: rsaEncryption, 3072 (bit); sigalg: RSA-SHA256
   v:NotBefore: Jun 19 14:40:43 2024 GMT; NotAfter: Jun 20 02:40:43 2026 GMT
---
Server certificate
-----BEGIN CERTIFICATE-----
<raw_certificate_string>
-----END CERTIFICATE-----