I setup Slack notification channel and unchecked ‘Include image’ option, but when sending alert I got below error, and Slack received nothing:
INFO[10-18|13:14:01] New state change logger=alerting.resultHandler alertId=1 newState=no_data prev state=alerting
INFO[10-18|13:14:01] Sending notifications for logger=alerting.notifier ruleId=1 sent count=2
INFO[10-18|13:14:01] Rendering logger=png-renderer path="dashboard-solo/db/druid1?&panelId=1"
Loading a web page: http://localhost:3000/dashboard-solo/db/druid1?&panelId=1 status: success 30000
EROR[10-18|13:14:31] Failed to upload alert panel image. logger=alerting.notifier error=“Timeout error. You can set timeout in seconds with &timeout url parameter”
This behavior apparently changed since 4.6.0-pre1, before that, even when I selected ‘upload image’ option, the message just took time to be sent(usually ~30 seconds), if the option was de-selected, messages were sent immediately.
- Is S3 container mandatory now for Slack? if it’s not attached, notification to Slack would fail?
- Slack test messages can be sent just fine, so it may not be a network issue