Wondering how to resolve “Panel plugin not found: graph” error in plesk? We can help you.
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Let’s take a look at how our Support Team help a customer deal with this Plesk error.
How to resolve “Panel plugin not found: graph” error in Plesk?
Graphs are not displayed in Advanced Monitoring, but the following error is shown:
Panel plugin not found: graph
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The plesk-json-backend-datasource plugin is not installed
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Also, the following warning can be found in
/var/log/plesk/panel.log
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when accessing Advanced Monitoring with debug mode enabled:
WARN [extension/grafana] Dashboard update failed. ID: monitoring__network. Error: Invalid username or password
Usually, issue occurs due to corrupted Grafana installation.
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Today, let us see the steps followed by our Support Techs to resolve it.
1. Firstly, connect to the server via SSH
2. Then, remove the Grafana extension:
plesk bin extension --uninstall grafana
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3. Next, remove the Advanced Monitoring extension:
plesk bin extension --uninstall monitoring
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4. Then, remove Grafana from the server:
For Debian or Ubuntu operating systems:
apt purge grafana && rm -rf /usr/share/grafana /etc/grafana /var/lib/grafana
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For RHEL, CentOS or CloudLinux operating systems:
yum remove grafana && rm -rf /usr/share/grafana /etc/grafana /var/lib/grafana
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5. Next, reinstall the Grafana extension:
\plesk bin extension --install grafana
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plesk bin extension --install monitoring
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6. Finally, if the following error message is shown at Advanced Monitoring, press Fix installation button:
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Conclusion
Today, we saw steps followed by our Support Engineers to resolve “Panel plugin not found: graph” error.
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