Getting 503 Service Unavailable Error When Accessing Application Via Oracle Traffic Director (Doc ID 2290306.1)

Last updated on NOVEMBER 06, 2023

Applies to:

Symptoms

Accessing application through Oracle Traffic Director (OTD) fails with error saying "Service Unavailable".

The OTD log shows the OTD marks all the servers in the origin server pool offline after receiving response code 500 for the health check request (OPTIONS method by default)

[2017-07-25T15:27:06-04:00] [otd_config] [TRACE:1] [] [] [pid: PID] trying to OPTIONS /, check-http-server reports: received server error response code 500 from server backendserver02.example.com:51211
....
[2017-07-25T15:28:44-04:00] [otd_config] [WARNING:1] [OTD-11016] [] [pid: PID] health-check reports: all servers in origin server pool origin-server-pool-1 are offline.
...

[2017-07-25T15:27:59-04:00] [otd_config] [TRACE:32] [] [] [ecid: ECID] [rid: 0] [pid: PID] for host xx.xx.xx.xx trying to GET /, func_exec reports: fn="set-origin-server" origin-server-pool="origin-server-pool-1" rewrite-location="false" rewrite-content-location="false" Directive="Route" magnus-internal="" magnus-internal="" returned -1 (REQ_ABORTED)
....

Changes

Cause

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