Error: F_JG057F: Connection Reset by Peer / Too Many Incoming Connections

While testing the connection to hvragent, the following error appears:

F_JG057F TLS negotiation failed: I/O error occurred: Connection reset by peer

In addition, Capture and Integrate jobs fail with the following error:

F_JG0582 TLS negotation failed: No communication

Checking the HVR.socket status using the command systemctl status hvr.socket reveals a high number of refused connections. After checking the systemd log and the /var/log/messages directory for relevant errors using the commands journalctl -u hvr.socket and cat /var/log/messages | grep hvr, the following error appears:

Too many incoming connections from source, dropping connection.

NOTE: For more causes and solutions related to the F_JG057F Connection reset by peer error, see Error: F_JG057F: TLS Negotiation Failed: I/O Error Occurred: Connection Reset by Peer.

Environment

HVR 6
HVR Agent: Running as a systemctl service

Resolution

To resolve this issue, do the following:

Temporarily resolve the issue by running the following commands:

systemctl daemon-reload
systemctl reset-failed  # Clear all failed services
systemctl restart hvr.socket  # Restart the HVR socket service

Prevent systemd from error accounting by modifying the ExecStart parameter in the /etc/systemd/system/hvr@.service file. Run the following command, replacing <path_to_hvragent> with the full path to hvr_home/bin/hvragent:
```
ExecStart=-<path_to_hvragent>
```
Reload and restart the service using the following commands:
```
systemctl daemon-reload
systemctl restart hvr.socket
```

Cause

systemd tracks non-zero exit statuses or abnormal exits due to signals. After a certain number of failures, it disables the service. As a result, this issue occurs when the number of failed or refused connection attempts exceeds the limit.

Adding the prefix - to the ExecStart parameter disables error accounting in systemd, ensuring only valid connections are counted. This reduces the number of connections counted against the limit, preventing the errors.