mchcz edited a comment on issue #809: Web server failed to start. Port 8080 was already in use. URL: https://github.com/apache/incubator-dolphinscheduler/issues/809#issuecomment-532573140 1. Please confirm whether port 8181 in application. properties is occupied. If not, see point 2. 2. Make sure that the ports mapped to the scheduling system are occupied in the nginx configuration file, as shown in the following figure:  If the error is still reported, please provide more error information.
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