VNC console does not work in SolusIO:
CONFIG_TEXT: Connection failed
The following error is displayed in Dev Tool of a browser:
CONFIG_TEXT: WebSocket connection to 'wss://example.com/vnc?url=203.0.113.2:7778/3fcfc36a-72ee-4512-9e97-85e5c753873f' failed: Error during WebSocket handshake: Unexpected response code: 502
CentOS 8 is used for Compute Resource.
Attempt to establish a connection on port 7778 from Management node to Compute Resource with telnet fails:
# telnet 203.0.113.2 7778
telnet: Unable to connect to remote host: No route to host
due to the fact that port 7778 is not added in firewalld rules.
Access affected compute resource via SSH.
Add port 7778 to firewalld:
# firewall-cmd --zone=public --add-port=7778/tcp