circus 0.5

Circus is a program that will let you run and watch multiple processes and sockets.

Circus is a program that runs and watches processes and sockets.

Circus can be used as a library or through the command line.

For more information about the motivation for this project, see this blog post.

Links:

• The full documentation is located at : http://circus.io

• There’s a maling list for any feedback or question: http://tech.groups.yahoo.com/group/circus-dev/

• The repository and issue tracker is at GitHub : https://github.com/mozilla-services/circus

• Join us on the IRC : Freenode, channel #mozilla-circus

CHANGES

0.5 - 2012-07-06

• added socket support

• added a listsocket command

• sockets have stats too !

• fixed a lot of small bugs

• removed the wid - now using pid everywhere

• faster tests

• changed the variables syntax

• use pyzmq’s ioloop in more places

• now using iowait for all select() calls

• incr/decr commands now have an nbprocess parameter

• Add a reproduce_env option to watchers

• Add a new UNEXISTING status to the processes

• Added the global httpd option to run circushttpd as a watcher

0.4 - 2012-06-12

• Added a plugin system

• Added a “singleton” option for watchers

• Fixed circus-top screen flickering

• Removed threads from circus.stats in favor of zmq periodic callbacks

• Enhanced the documentation

• Circus client now have a send_message api

• The flapping feature is now a plugin

• Every command line tool have a –version option

• Added a statsd plugin (sends the events from circus to statsd)

• The web UI now uses websockets (via socketio) to get the stats

• The web UI now uses sessions for “flash messages” in the web ui

0.3.4 - 2012-05-30

• Fixed a race condition that prevented the controller to cleanly reap finished processes.

• Now check_flapping can be controlled in the configuration. And activated/deactivated per watcher.

0.3.3 - 2012-05-29

• Fixed the regression on the uid handling

0.3.2 - 2012-05-24

• allows optional args property to add_watcher command.

• added circushttpd, circus-top and circusd-stats

• allowing Arbiter.add_watcher() to set all Watcher option

• make sure the redirectors are re-created on restarts

0.3.1 - 2012-04-18

• fix: make sure watcher’ defaults aren’t overrided

• added a StdoutStream class.

0.3 - 2012-04-18

• added the streaming feature

• now displaying coverage in the Sphinx doc

• fixed the way the processes are killed (no more SIGQUIT)

• the configuration has been factored out

• setproctitle support

0.2 - 2012-04-04

• Removed the show name. replaced by watcher.

• Added support for setting process rlimit.

• Added support for include dirs in the config file.

• Fixed a couple of leaking file descriptors.

• Fixed a core dump in the flapping

• Doc improvments

• Make sure circusd errors properly when another circusd is running on the same socket.

• get_arbiter now accepts several watchers.

• Fixed the cmd vs args vs executable in the process init.

• Fixed –start on circusctl add

0.1 - 2012-03-20

• initial release