Healthcheck Middleware Metering¶
https://blueprints.launchpad.net/ceilometer/+spec/ceilometer-healthcheck-middleware
Oslo.middleware is going to provide a healthcheck middleware in order to monitor health of HTTP services. We want to monitor this middleware response code and time in Ceilometer in order to have analytics available.
Problem description¶
The healthcheck functionnality provided by oslo.middleware will provide information about the health of a particular API service. It’ll be useful to retrieve periodically the state of the service in Ceilometer to have the ability to analyse these data.
Proposed change¶
Let’s write a pollster that polls the healthcheck middleware to generate samples measuring the response time of the middleware, and incorporating the status code as metadata.
In order to find which endpoints to poll, the pollster will rely on the EndpointDiscovery discover to find them.
Alternatives¶
None
Data model impact¶
None
REST API impact¶
None
Security impact¶
None
Pipeline impact¶
None
Other end user impact¶
None
Performance/Scalability Impacts¶
None
Other deployer impact¶
None
Developer impact¶
None
Implementation¶
Assignee(s)¶
- Primary assignee:
jdanjou
- Other contributors:
sileht
- Ongoing maintainer:
jdanjou sileht
Work Items¶
Write a pollster
Future lifecycle¶
As all pollsters.
Dependencies¶
None
Testing¶
We should be able to test using unit testing and testing inside Tempest. Devstack should have support of this healthcheck middlware by default.
Documentation Impact¶
The new pollster should be documented the same way we do for others.
References¶
oslo.middleware healthcheck blueprint <https://blueprints.launchpad.net/oslo.middleware/+spec/oslo-middleware-healthcheck>_
