Resolution
It is possible that at some point a Parallels Secure Workspace node is unavailable for some reason (e.g. planned maintenance resulting in a shutdown or reboot, technical issue, ...).
If this is a node in a multi-node environment, this is the immediate impact when the node is unavailable:
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Existing WebSocket connections to this node will be closed.
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RDP connections between Parallels Secure Workspace and the RDS infrastructure will be disconnected.
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Depending on whether application sessions failover (System Settings > Global > Service Management) is enabled:
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Enabled: Users will not lose their application session and can continue to work after a few seconds.
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Disabled: All existing application sessions on that failing node will be lost. Users will need to restart their applications.
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When properly configured in System Settings and with a properly configured external load balancer, the impact should only be limited to an interruption of a couple of seconds for the end users. They may need to reconnect their session. They will be able to reconnect to their prior RDP connections on the RDS infrastructure.
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