Controlling UNIX Processes using Supervisor
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This document provides an overview of Supervisor, an open source process control system for UNIX. It discusses key features like convenience, delegation, and distributed control. It also covers installation, configuration, running Supervisor via command line or web interface, process states, logging, XML-RPC, event notifications, and related tools. Resources for further information are provided at the end.
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Controlling UNIX Processes using Supervisor
- 1. Controlling UNIX Processes using Supervisor Calvin Hendryx-Parker PyOhio 2010 nowhere to go but open source s i xf e e tu p . c om
- 2. Supervisor Overview • Convenience • Delegation • Distributed Control • Process Groups sixfeetup.com
- 3. Similar Tools • launchd • daemontools • runit sixfeetup.com
- 4. Installation and Configuration • virtualenv! • Installation via setuptools • Configuration File Details • Overview of the major sections • Group Processes sixfeetup.com
- 5. Running Supervisor • Command line • Web Interface • XML-RPC sixfeetup.com
- 6. supervisord Signals • SIGTERM, SIGINT, SIGQUIT • SIGHUP • SIGUSR2 sixfeetup.com
- 7. Subprocesses • supervisord is the parent process • Child Processes • pidproxy sixfeetup.com
- 8. Subprocess States sixfeetup.com
- 9. Logging • Activity Log • Child Process Logs sixfeetup.com
- 10. Utilizing XML-RPC • Remote Control of Supervisor • Extending Supervisor • supervisor_cache • supervisor_twiddler sixfeetup.com
- 11. Event Notifications • Types of Events • PROCESS_STATE • REMOTE_COMMUNICATION • PROCESS_LOG • PROCESS_COMMUNICATION • SUPERVISOR_STATE_CHANGE • TICK sixfeetup.com
- 12. Event Notifications • supervisor.childutils • Example usage of events • Monitor resource usage • Span new processes based on usage sixfeetup.com
- 13. Resources • http://supervisord.org • http://pypi.python.org/pypi/supervisor • http://pypi.python.org/pypi/ collective.recipe.supervisor • http://pypi.python.org/pypi/superlance • http://pypi.python.org/pypi/supervisor_cache • http://virtualenv.openplans.org/ • http://docs.repoze.org/bfg/1.3/narr/firstapp.html sixfeetup.com
- 14. Questions? Thank you! nowhere to go but open source s i xf e e tu p . c om
Notes de l'éditeur
- Pure Python Simple, centralized, efficient, extensible, compatible, proven Maintainable Software - Mike Agendaless - Chris Accuracy
- supervisord supervisorctl
- tail -f (stderr) utilize the supervisor namespace supports XML-RPC multicall API - encapsulate multiple calls to a remote server into a single request
- stop processes, reload config close and re-open log files, rotate log files
- manages complete lifetime of child processes can't daemonize for daemons that can't
- stdout
- Supervisor Cache can prevent the synchronization headaches you might have using the filesystem or a database to accomplish the same task manipulated in ways that are not normally possible at runtime.
- need to mention superlance Supervisor sends specially-formatted input to an event listener process' stdin and stdout supervisor maintains state of event listeners, busy, ready, acknowleged starting, running, backoff, stopping, exited, stopped, fatal, unknown stdout, stderr watches for tags in process output, stdout and stderr running, stopping 5, 60, 3600 event listeners can be in any lang, but supervisor contains a support lib to make this easy.
- need to mention superlance Supervisor sends specially-formatted input to an event listener process' stdin and stdout supervisor maintains state of event listeners, busy, ready, acknowleged starting, running, backoff, stopping, exited, stopped, fatal, unknown stdout, stderr watches for tags in process output, stdout and stderr running, stopping 5, 60, 3600 event listeners can be in any lang, but supervisor contains a support lib to make this easy.