Disnix: A toolset for distributed deployment
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Disnix is a toolset for automatically deploying distributed systems across multiple machines. It addresses challenges like reliable and efficient deployment as well as atomic upgrades and rollbacks. Disnix uses a modular architecture where individual tools perform separate deployment tasks like building, transferring, and activating in a composable way. It leverages the Nix package manager and community to support development, testing, and maintenance.
Disnix: A toolset for distributed deployment
- 1. Disnix: A toolset for distributed deployment Sander van der Burg Eelco Dolstra Delft University of Technology, EEMCS, Department of Software Technology September 20, 2010 Sander van der Burg, Eelco Dolstra Disnix: A toolset for distributed deployment
- 2. Disnix Disnix is a tool to automatically deploy a distributed system in a network of machines Sander van der Burg, Eelco Dolstra Disnix: A toolset for distributed deployment
- 3. Research issues General issues: Automatic deployment Reliable deployment Efficient deployment Atomic upgrades/rollbacks Domain specific issues: Security Privacy Performance Sander van der Burg, Eelco Dolstra Disnix: A toolset for distributed deployment
- 4. Research issues It is complex to implement and maintain a toolset dealing with these issues! Sander van der Burg, Eelco Dolstra Disnix: A toolset for distributed deployment
- 5. Challenges How to develop this toolset in a convenient way? Some non-functional requirements of the domain cannot be solved generically Maintaining everything ourselves is a lot of effort: Programming language compilers/interpreters: C, Java, Python, PHP, ... Libraries: Apache Axis2, libxml2, ... Infrastructure components: Apache Tomcat, MySQL, ... The tool is used in a distributed setting. How to test? Sander van der Burg, Eelco Dolstra Disnix: A toolset for distributed deployment
- 6. Architecture Sander van der Burg, Eelco Dolstra Disnix: A toolset for distributed deployment
- 7. Architecture Sander van der Burg, Eelco Dolstra Disnix: A toolset for distributed deployment Architecture Architecture is mainly composition of processes (command-line tools) Each tool performs a separate deployment task in the deployment process: Building Transferring Activating Inspired by Art of UNIX programming book
- 8. Architecture Sander van der Burg, Eelco Dolstra Disnix: A toolset for distributed deployment Architecture A user can easily perform steps seperately Testing and debugging is relatively easy; things can be easily scripted Components can be implemented using various programming languages: Nix, C, shell scripts Prototyping is relatively easy. First use a high-level language, implement later in a low-level language
- 9. Architecture Extensions with custom modules are implemented by composing processes: Virtualization extension Dynamic deployment Service abstraction layer Sander van der Burg, Eelco Dolstra Disnix: A toolset for distributed deployment
- 10. Testing Generate cheap virtual networks from declarative specifications Automatically performs testcases on them Completely scripted Disnix is continuously integrated and tested by Hydra Sander van der Burg, Eelco Dolstra Disnix: A toolset for distributed deployment
- 11. Community Sander van der Burg, Eelco Dolstra Disnix: A toolset for distributed deployment Community Disnix is part of the Nix project Tools are released under free and open-source licenses About 25 contributors Cross compiling Nixpkgs: contains compilers, libraries, tools which can be used by Disnix
- 12. Lessons learned Architecture works well for supporting development Easy prototyping, debugging, testing, extendable Our test approach works well; we can automatically perform distributed testcases Community is crucial; too much effort to maintain everything ourselves Sander van der Burg, Eelco Dolstra Disnix: A toolset for distributed deployment
- 13. Website Disnix, and other related Nix tooling: Hydra, NixOS can be freely downloaded from: http://nixos.org Sander van der Burg, Eelco Dolstra Disnix: A toolset for distributed deployment
- 14. Questions Sander van der Burg, Eelco Dolstra Disnix: A toolset for distributed deployment