perf-matrix.sh provides on-demand any-to-any performance testing:
- datanet: host-to-host bandwidth matrix over VLAN 1000
- guests: guest-to-guest (k8s/ultix VMs over datanet)
- storage: NFS read/write I/O per host
iperf3 installed on all 7 hosts (systemd service iperf3-server, enabled
but not auto-started) and all production VMs with guest-agent.
Also: tsys3 datanet persistence fix (USB NIC late-enumerate systemd
service), 4 missing reverse DNS zones created, netbird/ultix-mini/
ultix-sidecar/ultix-highside DNS records added (DNS now fully
consistent across all Tailscale nodes). [#413]
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