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talosctl is a command-line tool for interacting with the Talos API and managing Talos machines. Follow the instructions below to install it on your operating system:

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Linux and macOS

The easiest way to install talosctl is via Homebrew: 
brew install siderolabs/tap/sidero-tools
This method ensures that talosctl stays up to date automatically when new versions are released. The same tap also includes a formula for omnictl. For manual or Windows installation, see the alternate installation methods in the Talos documentation.

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Omni-managed clusters and permissions

When managing Talos nodes through Omni, certain privileged talosctl commands are restricted. All os:admin role commands except for a select few are not allowed to run against the Talos machines connected to Omni. The following os:admin commands are allowed when accessing Talos machines through Omni:
Allowed commands
talosctl etcd alarm list
talosctl etcd alarm disarm
talosctl etcd defrag
talosctl etcd downgrade validate
talosctl etcd downgrade enable
talosctl etcd downgrade cancel
talosctl etcd forfeit leadership
talosctl etcd status
talosctl pcap
talosctl reboot
talosctl restart
talosctl service <id> [stop|start|restart]
talosctl shutdown

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Sensitive resources

Omni restricts access to machine configuration because it may contain sensitive PKI material. To see which resources are not accessible, run: 
talosctl get rds -o json | jq -s '.[] | select(.spec.sensitivity=="sensitive") | .metadata.id'