History

Matthew Treinish 55e29b457c Make run_stress.py script an entry point With change `f8b816af07` we started packaging binaries using pbr entry points. The run_stress.py script previously lived in tempest.stress, howver since it is intended to be run as a binary the proper place for it is now tempest.cmd and using an entry-point it will be easier to run it outside of the tempest tree. Change-Id: I96b2c7915875f4f9d7869b8728bf2c6f6ccbeec9		2014-06-09 15:31:42 +00:00
..
actions	Merge "ssh_floating verify reboot"	2014-05-05 13:10:50 +00:00
etc	Stress action for volume attach verify	2014-03-31 13:22:57 +02:00
tools	Change logging in stress test	2013-08-08 15:10:29 +02:00
README.rst	Make run_stress.py script an entry point	2014-06-09 15:31:42 +00:00
__init__.py	Remove copyright from empty files	2014-01-14 03:02:04 +04:00
cleanup.py	Add security group deletion to the cleanup util	2014-02-24 17:42:05 +01:00
driver.py	Enforces the use of Credentials (part2)	2014-05-06 14:38:55 +01:00
stressaction.py	Remove vim headers	2014-01-20 11:22:45 +09:00

README.rst

Tempest Field Guide to Stress Tests

OpenStack is a distributed, asynchronous system that is prone to race condition bugs. These bugs will not be easily found during functional testing but will be encountered by users in large deployments in a way that is hard to debug. The stress test tries to cause these bugs to happen in a more controlled environment.

Environment

This particular framework assumes your working Nova cluster understands Nova API 2.0. The stress tests can read the logs from the cluster. To enable this you have to provide the hostname to call 'nova-manage' and the private key and user name for ssh to the cluster in the [stress] section of tempest.conf. You also need to provide the location of the log files:

target_logfiles = "regexp to all log files to be checked for errors" target_private_key_path = "private ssh key for controller and log file nodes" target_ssh_user = "username for controller and log file nodes" target_controller = "hostname or ip of controller node (for nova-manage) log_check_interval = "time between checking logs for errors (default 60s)"

To activate logging on your console please make sure that you activate use_stderr in tempest.conf or use the default logging.conf.sample file.

Running default stress test set

The stress test framework can automatically discover test inside the tempest test suite. All test flag with the @stresstest decorator will be executed. In order to use this discovery you have to be in the tempest root directory and execute the following:

run-tempest-stress -a -d 30

Running the sample test

To test installation, do the following:

run-tempest-stress -t tempest/stress/etc/server-create-destroy-test.json -d 30

This sample test tries to create a few VMs and kill a few VMs.

Additional Tools

Sometimes the tests don't finish, or there are failures. In these cases, you may want to clean out the nova cluster. We have provided some scripts to do this in the tools subdirectory. You can use the following script to destroy any keypairs, floating ips, and servers:

tempest/stress/tools/cleanup.py