Error 502 Bad Gateway Bad Gateway The proxy server received an invalid response from an upstream server. Has anyone experienced this issue? It appears sporadically on my Grafana screen, which uses a datasource from Zabbix 7.0 with MySQL. Grafana version 12.4.1, plugin 6.3.0. [Screenshot_70…

Error: 502 Bad Gateway - an invalid response from an upstream server

infofcc3 March 24, 2026, 6:13am 2

Grafana datasource timeout increase
or
check grafana.log file

Topic		Replies	Views
Queries to Prometheus result in Bad Gateway (502) Errors Grafana Cloud	1	961	June 3, 2021
502 bad Gateway	2	11009	November 26, 2020
Network Error - Bad Gateway(502) InfluxDB	0	10724	June 7, 2019
502: Bad Gateway Configuration nginx , config-help	2	10094	December 6, 2021
Datasource sends back 502 every once a while	0	447	July 25, 2019