Address occasional issues where TCP connections appear healthy,
yet the web servers within containers fail to respond,
resulting in requests being sent to unhealthy servers.
Implemented for services I currently use.
- Aodh (OPTIONS to /, expects 2XX or 3XX)
- Barbican (OPTIONS to /, expects 2XX or 3XX)
- Blazar (OPTIONS to /, expects 401)
- Cinder API (OPTIONS to /, expects 2XX or 3XX)
- CloudKitty (OPTIONS to /, expects 2XX or 3XX)
- Designate (OPTIONS to /, expects 2XX or 3XX)
- Glance (OPTIONS to /, expects 2XX or 3XX)
- Gnocchi (OPTIONS to /, expects 2XX or 3XX)
- Grafana (OPTIONS to /, expects 2XX or 3XX)
- Heat (OPTIONS to /, expects 2XX or 3XX)
- Horizon (OPTIONS to /, expects 2XX or 3XX)
- Ironic (OPTIONS to /, expects 2XX or 3XX)
- Keystone (OPTIONS to /, expects 2XX or 3XX)
- Magnum (OPTIONS to /, expects 2XX or 3XX)
- Manila (OPTIONS to /, expects 2XX or 3XX)
- Masakari (OPTIONS to /, expects 2XX or 3XX)
- Mistral (OPTIONS to /, expects 2XX or 3XX)
- Nova API (OPTIONS to /, expects 2XX or 3XX)
- Nova Metadata (OPTIONS to /, expects 2XX or 3XX)
- Neutron (OPTIONS to /, expects 2XX or 3XX)
- Opensearch (OPTIONS to /, expects 2XX or 3XX)
- Opensearch Dashboards (OPTIONS to /, expects 401)
- Placement (GET to /, expects 2XX or 3XX)
- Prometheus (OPTIONS to /, expects 2XX or 3XX)
- Prometheus AlertManager (OPTIONS to /, expects 2XX or 3XX)
- Prometheus Openstack Exporter (OPTIONS to /, expects 2XX or 3XX)
- Prometheus Server (OPTIONS to /, expects 2XX or 3XX)
- Skyline API (OPTIONS to /docs, expects 2XX or 3XX)
- Skyline Console (GET to /, expects 2XX or 3XX)
- Swift (OPTIONS to /info, expects 2XX or 3XX)
- Trove (OPTIONS to /, expects 2XX or 3XX)
- Venus (OPTIONS to /, expects 2XX or 3XX)
- Watcher (GET to /, expects 2XX or 3XX)
- Zun (OPTIONS to /, expects 2XX or 3XX)
Change-Id: I839f7f1051182fe797394e5436571d64d5c5b5a4
70279972b6