os_tempest

os_tempest

os_tempest is the unified ansible role for installing, configuring and running tempest tests as well as processing tempest results using stackviz.

TripleO CI group collaborates on os_tempest development. To see what os_tempest is and the reasons why it was started have a look at the os-tempest documentation.

Installation on a manually deployed TripleO Standalone Deployment

Follow the os_tempest Installation guide.

If the installation was successful you can expect ansible-galaxy to list the following roles: config_template, python_venv_build, os_tempest.

$ ansible-galaxy list
- config_template, master
- python_venv_build, master
- os_tempest, (unknown version)

Running os_tempest role using the playbook

In order to run os_tempest role on target host, you must first ensure you have a working clouds.yaml.

Then, we can create a tempest.yaml playbook with the following vars:

---
- hosts: localhost
  name: Run Tempest on Standalone
  vars:
    ansible_become: true
    tempest_run: 'yes'
    tempest_install_method: 'distro'
    tempest_cloud_name: 'standalone'
    tempest_workspace: "/home/centos/tempest"
    tempest_services:
      - neutron
    tempest_public_net_physical_type: 'datacentre'
    tempest_private_net_provider_type: 'geneve'
    tempest_service_setup_host: '{{ inventory_hostname }}'
    tempest_public_subnet_cidr: '192.168.0.0/24'
    tempest_public_subnet_gateway_ip: '{{ tempest_public_subnet_cidr|nthhost(1) }}'
    tempest_public_subnet_allocation_pools: '{{ tempest_public_subnet_cidr|nthhost(100) ~ "-" ~ tempest_public_subnet_cidr|nthhost(120) }}'
    tempest_use_tempestconf: true
    tempest_run_stackviz: false
    tempest_tempest_conf_overrides:
      auth.tempest_roles: "Member"
    tempest_test_whitelist:
      - 'tempest.api.identity.v3'
  gather_facts: true
  roles:
    - os_tempest

What are these above vars:

  • ansible_become: true: os_tempest requires root permission for installation and creation of tempest related directories

  • tempest_run: ‘yes’: For running os_tempest role, by default, It is set to no.

  • tempest_install_method: ‘distro’: Set to distro for installing tempest and it’s plugins from distro packages

  • tempest_workspace: It is the full directory path where we want to create tempest workspace.

  • tempest_cloud_name: ‘standalone’: Name of the cloud name from clouds.yaml file for using to create tempest related resources on target host.

  • tempest_services: For installing tempest plugins as well as creating pre tempest resources like networks for tempest tests.

  • tempest_public_net_physical_type:

    The name of public physical network. For standalone tripleo deployment, it can found under /var/lib/config-data/ puppet-generated/neutron/etc/neutron/plugins/ml2/ml2_conf.ini and then look for the value of flat_networks.

  • tempest_private_net_provider_type:

    The Name of the private network provider type, in case of ovn deployment, it should be geneve. It can be found under /var/lib/config-data/puppet-generated/neutron/etc/neutron/plugins/ml2/ml2_conf.ini and then look for type_drivers.

  • tempest_service_setup_host: It should be set to ansible inventory hostname. For some operation, the ansible role delegates to inventory hostname.

  • tempest_public_subnet_cidr: Based on the standalone deployment IP, we need to pass a required cidr.

  • tempest_public_subnet_gateway_ip and tempest_public_subnet_allocation_pools:

    Subnet Gateway IP and allocation pool can be calculated based on the value of tempest_public_subnet_cidr nthhost value.

  • tempest_use_tempestconf: For generating tempest.conf, we use python-tempestconf tool. By default It is setted to false. Set to true for using it

  • tempest_run_stackviz: Stackviz is very useful in CI for analizing tempest results, for local use, we set it to false. By default it is setted to true.

  • tempest_tempest_conf_overrides: In order to pass additional tempest configuration to python-tempestconf tool, we can pass a dictionary of values.

  • tempest_test_whitelist: We need to pass a list of tests which we wish to run on the targest host as a list.

  • tempest_test_blacklist: In order to skip tempest tests, we can pass the list here.

  • gather_facts: We need to set gather_facts to true as os_tempest rely on targetted environment facts for installing stuff.

Here are the defaults vars of os_tempest role.

How to run it?

We can use ansible-playbook command to run the tempest.yaml playbook.

$ ansible-playbook tempest.yaml

Once the playbook run finishes, we can find the tempest related directories in the tempest workspace. within tempest_workspace/etc/ dir, we can find following files:

  • tempest.conf

  • tempest_whitelist.txt

  • tempest_blacklist.txt

within /var/log/tempest dir, we can find the tempest tests results in html format.

  • stestr_results.html

  • test_list.txt

Create your own os_tempest job

We are going to use tripleo-ci-centos-7-standalone-os-tempest job, which uses the role for validating the cloud.

Create a job definition in your .zuul.yaml file putting tripleo-ci-centos-7-standalone-os-tempest as a parent of the job:

- job:
    name: our-tripleo-os-tempest-job
    parent: tripleo-ci-centos-7-standalone-os-tempest

Note

More about Zuul job definitions can be found in the official Zuul documentation.

Note

This page assumes that the reader is familiar with TripleO CI jobs and with the procedures of adding new TripleO jobs.

By default, tripleo-ci-centos-7-standalone-os-tempest sets the following variables for controlling behaviour of os_tempest:

vars:
    tempest_install_method: distro
    tempest_cloud_name: 'standalone'

It runs tempest.yaml playbook which sets the rest of the os_tempest variables needed for execution on top of an environment deployed by one of the TripleO CI jobs. The content of the playbook can be seen here.

If you want to set some of the variables mentioned above differently you need to override them by adding those variables to your job definition.

Let’s say you would like to change tempest_cloud_name and tempest_public_net_physical_type. After setting the variables your job definition should look like:

- job:
    name: our-tripleo-os-tempest-job
    parent: tripleo-ci-centos-7-standalone-os-tempest
    vars:
        tempest_cloud_name: <your cloud name>
        tempest_public_net_physical_type: <your net type>

To see configuration options, please, follow this page of official documentation of os_tempest role.

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