grafana/docs/sources/installation/troubleshooting.md

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title = "Troubleshooting"
description = "Guide to troubleshooting Grafana problems"
keywords = ["grafana", "troubleshooting", "documentation", "guide"]
type = "docs"
[menu.docs]
parent = "admin"
weight = 8
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# Troubleshooting

## Visualization & Query issues

{{< imgbox max-width="40%" img="/img/docs/v45/query_inspector.png" caption="Query Inspector" >}}

The most common problems are related to the query & response from you data source. Even if it looks
like a bug or visualization issue in Grafana it is 99% of time a problem with the data source query or
the data source response.

To check this you should use Query Inspector (new in Grafana v4.5). The query Inspector shows query requests and responses.

For more on the query inspector read [this guide here](https://community.grafana.com/t/using-grafanas-query-inspector-to-troubleshoot-issues/2630). For
older versions of Grafana read the [how troubleshoot metric query issue](https://community.grafana.com/t/how-to-troubleshoot-metric-query-issues/50/2) article.

## Logging

If you encounter an error or problem it is a good idea to check the grafana server log. Usually
located at `/var/log/grafana/grafana.log` on unix systems or in `<grafana_install_dir>/data/log` on
other platforms & manual installs.

You can enable more logging by changing log level in you grafana configuration file.

## FAQ

Checkout the [FAQ](https://community.grafana.com/c/howto/faq) section on our community page for frequently
asked questions.