Converge

Converge is a configuration management tool that makes it easy to manage servers, laptops and other devices.

Key features:

• Easy to install and run. A single binary and configuration file is all you need.
• A powerful graph engine that automatically generates dependencies and runs tasks in parallel.
• API-first communication using grpc.
• Module verification: only run trusted modules.

Table of Contents

• Converge
  • Installation
  • Usage
  • Development
    • Tools
    • RPC
  • License

Installation

go get github.com/asteris-llc/converge

or download a release for your platform from the releases page on Github.

Usage

See the docs! It's pretty reasonable, though. Here's a summary:

Converge uses HCL for syntax. HCL is a superset of JSON that looks (and acts) quite a bit nicer.

The basic unit of composition in converge is the module. Modules have parameters and contain resources. Creating a module looks something like this:

# write "hello world" to disk
param "message" {
  default = "Hello, World in {{param `filename`}}"
}

param "filename" {
  default = "test.txt"
}

file.content "render" {
  destination = "{{param `filename`}}"
  content     = "{{param `message`}}"
}

Invoke this with converge apply --local samples/fileContent.hcl to install Traefik from yum on your system. You can also converge plan --local samples/fileContent.hcl to see what changes will be made before you apply them.

Development

Tools

For linting, you'll need:

tool	go get
golint	github.com/golang/lint/golint
go tool vet	(built in)
gosimple	honnef.co/go/simple/cmd/gosimple
unconvert	github.com/mdempsky/unconvert
structcheck	github.com/opennota/check/cmd/structcheck
varcheck	github.com/opennota/check/cmd/varcheck
aligncheck	github.com/opennota/check/cmd/aligncheck
gas	github.com/HewlettPackard/gas

RPC

You'll need:

• Google's protobuf compiler, 3.0 or above.
• The go protoc plugin: go get -a github.com/golang/protobuf/protoc-gen-go
• The grpc gateway plugin(s): go get -u github.com/grpc-ecosystem/grpc-gateway/protoc-gen-grpc-gateway github.com/grpc-ecosystem/grpc-gateway/protoc-gen-swagger

License

Converge is licensed under the Apache 2.0 license. See LICENSE for full details.