kolla-ansible/releasenotes/notes/add-prometheus-v2-9f10c79986d3faf3.yaml
Piotr Parczewski 1bdd8ea984 Add Prometheus 2.x deployment
It is now possible to deploy either 1.x or 2.x version of Prometheus.
The new 2.x version introduces breaking changes in terms of storage
format and command line options.

Change-Id: I80cc6f1947f3740ef04b29839bfa655b14fae146
Co-Authored-By: Radosław Piliszek <radoslaw.piliszek@gmail.com>
2021-01-12 14:17:49 +01:00

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YAML

---
features:
- |
Prometheus version 2.x deployment added. This version is enabled by
default and replaces a forward-incompatible version 1.x. A variable
``prometheus_use_v1`` can be set to ``yes`` to preserve version
1.x deployment with its data. Otherwise, Prometheus will start with
a new volume, ignoring all previously collected metrics.
upgrade:
- |
New Prometheus version ignores previously stored metrics. If you
want to keep using 1.x with the old data, set ``prometheus_use_v1``
variable to ``yes``. The old data is not removed, please read the
docs for details. Please also make sure you adapt changes in command
line options if they were ever customized in your environment because
Prometheus 2.x has different syntax (``--option`` with double dashes
instead of ``-option``).