This is the source code for the roll command line program, the part of the Roller automated host management system which runs on a host, reads hostclass and host YAML files from a Roller config server, and then applies the changes locally to bring up or upgrade the local host.
To build roll from source:
./build.sh
Roller should build on any reasonably recent Unix system with a GNU autoconf and gcc compilation stack, plus the libcurl and libyaml libraries.
To bootstrap or upgrade a Unix host (assuming you have a Roller configuration server available at http://config/), run the following as superuser on the host to be upgraded:
./roll
Roller is a host management system which arranges for software packages and configuration files to be installed on a host in a reliable, repeatable, and source controlled way. The following major components comprise Roller:
- A data repository, with source controlled host and hostclass definitions
- Static, precompiled software packages
- A configuration server, with APIs to the read data and download packages
- The roll program, which uses the above to actually bootstrap a host
The roll program is the latter: it contacts a configuration server, asks for host and hostclass definitions for the host that it is running on, downloads and links packages according to the hostclass definition, and then runs package hooks to generate configuration files and restart services.
Roller uses Encap for its local host package management, and Git managed YAML files for host and hostclass definitions.
Copyright (c) 2013, Groupon, Inc.
All rights reserved.
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- Home: https://github.com/groupon/roll
- Bugs: https://github.com/groupon/roll/issues
- Authors: https://github.com/andrewgho
There are a number of existing host management solutions. The very popular current ones are:
Roller differs from these in its emphasis on simplicity and repeatability, for example, by keeping all host and hostclass data in static files, using prebuilt static packages that are locally served, and striving to minimize the amount of deploy-time code that is run.
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent