EGI-Federation / fedcloud-vm-monitoring

Monitors VMs running on fedcloud for a given project, killing them if not acknowledged
MIT License
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Adding checks for CUPS #22

Closed sebastian-luna-valero closed 1 month ago

sebastian-luna-valero commented 1 month ago

Summary

This PR runs the following checks with ncat on VMs with public IPs:

# TCP check
ncat --nodns -z {ip} {port}

# UDP check
ncat --udp --nodns --idle-timeout 3s {ip} {port}

Note that checking accessible UPD ports is not as easy. [1]

Although these checks are not comprehensive, it may still be useful to confirm whether further checks are required.

[1] https://serverfault.com/questions/416205/testing-udp-port-connectivity


Related issue :