After the SSH is logged in to the Virtual Machines, it will be automatically disconnected if no operations are performed for a period of time.
Caused by timeout of SSH connection.
Log in to the Virtual Machines, edit the ssh configuration file, and enter the command:
The parameter ClientAliveInterval is the duration of SSH connection, the value is second, you can set it yourself.
ClientAliveInterval 300, which indicates 300 seconds, that is, 5 minutes.
In addition, ClientAliveCountMax is the number of times of SSH's allowable timeout. If the customer's does not respond, it will be judged as a timeout.
ClientAliveCountMax 5, indicating that 5 times is allowable for timeout.
The following setting indicates that 1500 seconds is allowable for timeout, that is, 25 minutes.
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