Webhook fails with HTTP 403 Forbidden
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*Except Fisheye and Crucible
Summary
Jira tries to fire a webhook but gets an HTTP 403 response from the webhook server.
Environment
This error may occur in Server or DC environments with an outbound proxy.
Diagnosis
The Jira logs show a warning with the HTTP code 403 when firing the webhook:
2020-01-17 06:31:25,837 httpclient-callbacks:thread-93 WARN anonymous [c.a.webhooks.plugin.PublishTaskFactoryImpl$PublishTaskImpl] Client error - 403 when posting to web hook at '<webhook_url>'Check if the webhook host is included in the JVM argument
-Dhttp.nonProxyHosts.
Example:-Dhttp.nonProxyHosts=localhost|127.0.0.1|local.example.com
Cause
Jira is going through the outbound proxy to fire the webhook and the proxy forbids the request.
Solution
Add the webhook host to the JVM argument -Dhttp.nonProxyHosts.