Release notes for Grafana 8.5.4

Features and enhancements

Alerting: Remove disabled flag for data source when migrating alerts. #48559, @yuri-tceretian
Alerting: Show notification tab of legacy alerting only to editor. #49624, @yuri-tceretian
Alerting: Update migration to migrate only alerts that belong to existing org\dashboard. #49192, @yuri-tceretian
AzureMonitor: Do not quote variables when a custom “All” variable option is used. #49428, @andresmgot
AzureMonitor: Update allowed namespaces. #48468, @jcolladokuri
CloudMonitor: Correctly encode default project response. #49510, @aangelisc
Cloudwatch: Add support for new AWS/RDS EBS* metrics. #48798, @szymonpk
InfluxDB: Use backend for influxDB by default via feature toggle. #48453, @yesoreyeram
Legend: Use correct unit for percent and count calculations. #49004, @dprokop
LokI: use millisecond steps in Grafana 8.5.x. #48630, @gabor
Plugins: Introduce HTTP 207 Multi Status response to api/ds/query. #48550, @wbrowne
Reporting: Improve PDF file size using grid layout. (Enterprise)
Transformations: Add an All Unique Values Reducer. #48653, @josiahg
Transformers: avoid error when the ExtractFields source field is missing. #49368, @wardbekker
[v8.5.x] Alerting: Update migration to migrate only alerts that belong to existing org\dashboard. #49199, @grafanabot
[v8.5.x] Reporting: Improve PDF file size using grid layout. (Enterprise)

Bug fixes

Alerting: Allow disabling override timings for notification policies. #48648, @gillesdemey
Alerting: Allow serving images from custom url path. #49022, @gillesdemey
Alerting: Apply Custom Headers to datasource queries. #47860, @joeblubaugh
Alerting: Fix RBAC actions for notification policies. #49185, @yuri-tceretian
Alerting: Fix access to alerts for viewer with editor permissions when RBAC is disabled. #49270, @yuri-tceretian
Alerting: Fix anonymous access to alerting. #49203, @yuri-tceretian
Alerting: correctly show all alerts in a folder. #48684, @gillesdemey
AzureMonitor: Fixes metric definition for Azure Storage queue/file/blob/table resources. #49101, @aangelisc
Dashboard: Fix dashboard update permission check. #48746, @IevaVasiljeva
DashboardExport: Fix exporting and importing dashboards where query data source ended up as incorrect. #48410, @torkelo
FileUpload: clicking the Upload file button now opens the modal correctly. #48766, @ashharrison90
GrafanaUI: Fix color of links in error Tooltips in light theme. #49327, @joshhunt
LibraryPanels: Fix library panels not connecting properly in imported dashboards. #49161, @joshhunt
Loki: Improve unpack parser handling. #49074, @gabor
RolePicker: Fix menu position on smaller screens. #48429, @Clarity-89
TimeRange: Fixes updating time range from url and browser history. #48657, @torkelo
TimeSeries: Fix detection & rendering of sparse datapoints. #48841, @leeoniya
Timeseries: Fix outside range stale state. #49633, @ryantxu
Tooltip: Fix links not legible in Tooltips when using light theme. #48748, @joshhunt
Tooltip: Sort decimals using standard numeric compare. #49084, @dprokop
Transforms: Labels to fields, fix label picker layout. #49304, @torkelo
Variables: Fixes issue with data source variables not updating queries with variable. #49478, @torkelo
[v8.5.x] Alerting: Fix RBAC actions for notification policies (#49185). #49348, @yuri-tceretian
[v8.5.x] Alerting: Fix access to alerts for viewer with editor permissions when RBAC is disabled. #49427, @konrad147
[v8.5.x] Alerting: Fix anonymous access to alerting. #49268, @yuri-tceretian

Breaking changes

For a data source query made via /api/ds/query :

If the DatasourceQueryMultiStatus feature is enabled and
- The data source response has an error set as part of the DataResponse, the resulting HTTP status code is now 207 Multi Status instead of 400 Bad gateway
If the DatasourceQueryMultiStatus feature is not enabled and
- The data source response has an error set as part of the DataResponse, the resulting HTTP status code is 400 Bad Request (no breaking change) –> Issue #48550