Job to the Linux Repository Fails with "No connection could be made because the target machine actively refused it xx.xx.xx.xx:2500"

When multiple tasks are attempting to use the same Linux repository simultaneously, some connections may fail with the error:

No connection could be made because the target machine actively refused it xx.xx.xx.xx:2500.

The port shown in the error is a data transmission port, and may be port in the 2500-3300 range.

To resolve this, you may consider increasing the limit on SSH connections. For most Linux servers, this is configured in the, etc/ssh/sshd_conf file. Consider the following values:

ClientAliveInterval 30
TCPKeepAlive yes
ClientAliveCountMax 99999
MaxSessions 200
MaxStartups 100:30:200

After any sshd_conf values are changed, the SSHD service must be restarted to apply the changes. Keep in mind that restarting the SSHD service may interrupt existing SSH connections.