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---
features:
- |
OSprofiler support was added. To initiate OpenStack request tracing
``--profile <HMAC_KEY>`` option needs to be added to the CLI command. This
key needs to present one of the secret keys defined in the OpenStack
projects configuration files (if there is a wish to generate cross-project
trace, the chosen key needs to be presented in all these configuration
files). By default all OpenStack projects, that support OSprofiler,
are using ``SECRET_KEY`` HMAC key.
To use tracing functionality OSprofiler (and its storage backend)
needs to be installed in the environment. If so, you will be able to
trigger profiling via `openstack --profile SECRET_KEY <operation>` command.
At the end of output there will be message with <trace_id>, and to plot
human-readable HTML chart the following command should be used -
``osprofiler trace show <trace_id> --html --out result.html``.
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