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PVC CLI architecture
The PVC CLI is a standalone client application for PVC. It interfaces with the PVC API, via a configurable list of clusters with customizable hosts, ports, addresses, and authentication.
The CLI is build using Click and is packaged in the Debian package pvc-client-cli. The CLI does not depend on any other PVC components and can be used independently on arbitrary systems.
The CLI is self-documenting, however the manual details the required configuration.
PVC CLI client manual
The PVC CLI client is built with Click, a Python framework for creating self-documenting CLI applications. It interfaces with the PVC API.
Use the -h option at any level of the pvc CLI command to receive help about the available commands and options.
Before using the CLI on a non-PVC node system, at least one cluster must be added using the pvc cluster subcommands. Running the CLI on hosts which also run the PVC API (via its configuration at /etc/pvc/pvcapid.yaml) uses the special local cluster, reading information from the API configuration, by default.
Configuration
The CLI client requires no configuration file. The only optional external environment variable is PVC_CLUSTER, which can be used to specify a cluster to connect to.