ESXi GUI unstable and can not add ESXi into vCenter inventory

Products

• VMware vSphere ESXi

Issue/Introduction

Symptoms:

• An ESXi host shows as "not responding" in vCenter Server.
• An ESXi GUI is not stable and sometimes browse ESXi GUI directly from web browser then it shows blank
• Cannot connect the ESXi host to vCenter Server.
• ESXi /var/log/rhttpproxy.log shows below example SSL decryption error

YYYY-MM-DDTHH:MM:SS warning rhttpproxy[2102019] [Originator@6876 sub=IO.Connection] Failed to read buffer from stream; SSL(<io_obj p:0x00000029304a7f38, h:16, <TCP 'ESXi IP: 443'>, <TCP 'Source device IP: 39300'>>) e: 336151548(sslv3 alert bad record mac), async: true, duration: 1msec

YYYY-MM-DDTHH:MM:SS warning rhttpproxy[2102019] [Originator@6876 sub=Proxy Req 00725] Error reading from client while waiting for header: N7Vmacore3Ssl12SSLExceptionE(SSL Exception: error:140943FC:SSL routines:ssl3_read_bytes:sslv3 alert bad record mac)

Environment

VMware vSphere ESXi 7.x

VMware vSphere ESXi 8.x

 

Cause

Faulty hardware component of ESXi server

Resolution

Contact physical server vendor and check hardware part like CPU/Memory/NIC

Additional Information

If no obvious log from hardware checking, then can consider below:

1. Use validated hardware component(CPU/Memory/NIC from other good host) in the faulty host to narrow down issue

Or

2. Step by step pull out part of hardware component of faulty host (for instance, half of CPU, half of memory......), and only use rest ones and so validate rest ones.