A Virtual Storage Console (VSC)/SMVI 4.2.2 backup stops working with the following error:
Backups not listing HTTP 504: Gateway Timeout
Unable to backup systems from within VCenter.
- Clicking the
Backup and recovery Configurationoption in the VSC plugin in VCenter displays an
unable to connect to virtual storage consoleerror
smvi backup listand other SMVI commands from the VSC server displays an error, and throws java exceptions about handshake failures and a connection been closed in the logs.
Specific issue (identified using Wireshark):
- After the TCP three-way handshake, VSC by default sends an SSL client hello handshake proposing SSLv3 (0x0300) to vCenter.
- vCenter then FIN, ACK the connection immediately, causing VSC to issue a fatal alert handshake failure packet back to vCenter, and the client programs to fail/error out. Forcing the client-initiated connections to negotiate at TLSv1 will resolve the issue.