This is DRAX, the DC/OS Resilience Automated Xenodiagnosis tool. It helps to test DC/OS deployments by applying a Chaos Monkey-inspired, proactive and invasive testing approach.
Well, actually DRAX is a reverse acronym inspired by the Guardians of the Galaxy character Drax the Destroyer.
From source, which will get you always the latest version:
$ go get github.com/dcos-labs/drax
$ go build
$ ./drax
INFO[0000] On destruction level 0 main=init
This is DRAX in version 0.1.0 listening on port 7777 with default level 0
Via Marathon app spec:
$ TBD
- DC/OS 1.7
- github.com/gambol99/go-marathon, an API library for working with Marathon.
- github.com/Sirupsen/logrus, a logging library.
You can influence what DRAX is supposed to destroy via the env variable DESTRUCTION_LEVEL:
0 == destroy random tasks
1 == destroy random apps
2 == destroy random apps and services
So for example you want DRAX to totally go berserk, use this to launch it from the command line: DESTRUCTION_LEVEL=2 drax.
Further, in order to influence the log level, use the LOG_LEVEL env variable, for example LOG_LEVEL=DEBUG drax would give you fine-grained log messages.
Will return a HTTP 200 code and I am Groot if DRAX is healthy.
Will return runtime statistics, such as killed containers or apps over a report period specified with the runs parameter. For example, /stats?runs=2 will report over the past two runs and if the runs parameter is not or wrongly specified it will report from the beginning of time (well, beginning of time for DRAX anyways).
Will trigger a destruction run on the current destruction level (see configuration section, above). You can explicitly set the level of destruction using the level parameter, for example, /rampage?level=1 will destroy random apps (but no services/frameworks).
Test locally:
$ MARATHON_URL=http://localhost:8080 drax
And:
$ http POST localhost:7777/rampage
HTTP/1.1 200 OK
Content-Length: 1187
Content-Type: text/plain; charset=utf-8
Date: Mon, 13 Jun 2016 06:30:47 GMT
Application: /weavescope is healthy: true
Task: weavescope.d0daf569-2cb2-11e6-aad0-1e9bbbc1653f
Application: /marvin/osmlookup is healthy: true
Task: marvin_osmlookup.dc1bdbfc-2cb3-11e6-aad0-1e9bbbc1653f
Application: /marvin/go2 is healthy: true
Task: marvin_go2.b87c98ba-2cb3-11e6-aad0-1e9bbbc1653f
Application: /marvin/frontend is healthy: true
Task: marvin_frontend.45c125be-2cb4-11e6-aad0-1e9bbbc1653f
Application: /weavescope-probe is healthy: true
Task: weavescope-probe.98789a15-2cb2-11e6-aad0-1e9bbbc1653f
Task: weavescope-probe.98793657-2cb2-11e6-aad0-1e9bbbc1653f
Task: weavescope-probe.98795d68-2cb2-11e6-aad0-1e9bbbc1653f
Task: weavescope-probe.9878e836-2cb2-11e6-aad0-1e9bbbc1653f
Application: /jenkins is healthy: true
Task: jenkins.773bfef3-2cb2-11e6-aad0-1e9bbbc1653f
Application: /webserver is healthy: true
Task: webserver.8d19ef26-2d66-11e6-aad0-1e9bbbc1653f
Application: /marvin/events is healthy: true
Task: marvin_events.d529728b-2cb3-11e6-aad0-1e9bbbc1653f
Application: /marvin/rec is healthy: true
Task: marvin_rec.e0d608ad-2cb3-11e6-aad0-1e9bbbc1653f