Introduce egctl

Motivation

EG should provide a command line tool with following capabilities:

• Collect configuration from envoy proxy and gateway
• Analyse system configuration to diagnose any issues in envoy gateway

This tool is named egctl.

Syntax

Use the following syntax to run egctl commands from your terminal window:

egctl [command] [entity] [name] [flags]

where command, name, and flags are:

• command: Specifies the operation that you want to perform on one or more resources, for example config, version.

• entity: Specifies the entity the operation is being performed on such as envoy-proxy or envoy-gateway.

• name: Specifies the name of the specified instance.

• flags: Specifies optional flags. For example, you can use the -c or --config flags to specify the values for installing.

If you need help, run egctl help from the terminal window.

Operation

The following table includes short descriptions and the general syntax for all the egctl operations:

Examples

Use the following set of examples to help you familiarize yourself with running the commonly used egctl operations:

# Retrieve all information about proxy configuration from envoy
egctl config envoy-proxy all <instance_name>

# Retrieve listener information about proxy configuration from envoy 
egctl config envoy-proxy listener <instance_name>

# Retrieve information about envoy gateway
egctl config envoy-gateway