Failed to parse datasource settings

[Heyzi]

victorialogs_version: v1.3.2
victoriametrics-logs-datasource: v0.13.2
grafana: 11.4.0
provisioned via grafana config:

  - name: VictoriaLogs
    type: victoriametrics-logs-datasource
    access: proxy
    uid: VictoriaLogs
    url: http://localhost:9428

Getting a weird floating issue where datasource stops working.

• Installation is clean (this is not an upgrade from an old version)
• After some time and restarting the error goes away or reappears (but not always, wtf)

2025-01-03T06:28:29.828240431Z logger=datasources t=2025-01-03T09:28:29.828198143+03:00 level=debug msg="Querying for data source via SQL store" uid=VictoriaLogs orgId=1
2025-01-03T06:28:29.828774755Z logger=query_data t=2025-01-03T09:28:29.828682443+03:00 level=debug msg="Processed metrics query" ref_id=A from=1735882110342 to=1735885710342 interval=2000 max_data_points=1036 query="{\"datasource\":{\"type\":\"victoriametrics-logs-datasource\",\"uid\":\"VictoriaLogs\"},\"datasourceId\":2,\"editorMode\":\"builder\",\"expr\":\"unit: \\\"anacron.service\\\" \",\"intervalMs\":2000,\"legendFormat\":\"\",\"maxDataPoints\":1036,\"maxLines\":1000,\"queryType\":\"instant\",\"refId\":\"A\"}"
2025-01-03T06:28:29.833205421Z logger=id-service t=2025-01-03T09:28:29.833132434+03:00 level=debug msg="Cached token found" id=user:1
2025-01-03T06:28:29.833340253Z logger=accesscontrol t=2025-01-03T09:28:29.833282789+03:00 level=debug msg="Evaluating permissions" id=user:1 orgID=1 permissions="action:datasources:query scopes:"
2025-01-03T06:28:29.833421146Z logger=query_data t=2025-01-03T09:28:29.833370998+03:00 level=debug msg="Processed metrics query" ref_id=log-volume-A from=1735882110342 to=1735885710342 interval=2000 max_data_points=1036 query="{\"datasource\":{\"type\":\"victoriametrics-logs-datasource\",\"uid\":\"VictoriaLogs\"},\"datasourceId\":2,\"editorMode\":\"builder\",\"expr\":\"unit: \\\"anacron.service\\\" \",\"field\":\"_stream\",\"intervalMs\":2000,\"legendFormat\":\"\",\"maxDataPoints\":1036,\"maxLines\":1000,\"queryType\":\"hits\",\"refId\":\"log-volume-A\",\"step\":\"36s\",\"supportingQueryType\":\"logsVolume\"}"
2025-01-03T06:28:29.834218260Z logger=secrets.kvstore t=2025-01-03T09:28:29.834140877+03:00 level=debug msg="got secret value" orgId=1 type=datasource namespace=VictoriaLogs
2025-01-03T06:28:29.834236145Z logger=secrets.kvstore t=2025-01-03T09:28:29.834164351+03:00 level=debug msg="got secret value" orgId=1 type=datasource namespace=VictoriaLogs
2025-01-03T06:28:29.834693570Z logger=plugin.victoriametrics-logs-datasource t=2025-01-03T09:28:29.834619284+03:00 level=debug msg="Plugin Request Started" dsName=VictoriaLogs dsUid=VictoriaLogs endpoint=queryData pluginId=victoriametrics-logs-datasource uname=admin
2025-01-03T06:28:29.834701420Z logger=plugin.victoriametrics-logs-datasource t=2025-01-03T09:28:29.834656798+03:00 level=debug msg="Plugin Request Started" dsName=VictoriaLogs dsUid=VictoriaLogs endpoint=queryData pluginId=victoriametrics-logs-datasource uname=admin
2025-01-03T06:28:29.834704234Z logger=plugin.victoriametrics-logs-datasource t=2025-01-03T09:28:29.834671992+03:00 level=error msg="failed to parse datasource settings: json: cannot unmarshal object into Go value of type string"
2025-01-03T06:28:29.834778735Z logger=plugin.victoriametrics-logs-datasource t=2025-01-03T09:28:29.834721231+03:00 level=error msg="Partial data response error" status=500 dsUid=VictoriaLogs error="failed to parse datasource settings: json: cannot unmarshal object into Go value of type string" pluginId=victoriametrics-logs-datasource refID=A statusSource=plugin uname=admin dsName=VictoriaLogs endpoint=queryData
2025-01-03T06:28:29.834791570Z logger=plugin.victoriametrics-logs-datasource t=2025-01-03T09:28:29.834756286+03:00 level=error msg="Plugin Request Completed" statusSource=plugin dsUid=VictoriaLogs endpoint=queryData pluginId=victoriametrics-logs-datasource status=error dsName=VictoriaLogs duration=158.888µs uname=admin
2025-01-03T06:28:29.834823497Z logger=plugin.victoriametrics-logs-datasource t=2025-01-03T09:28:29.834775923+03:00 level=error msg="failed to parse datasource settings: json: cannot unmarshal object into Go value of type string"
2025-01-03T06:28:29.834836227Z logger=plugin.victoriametrics-logs-datasource t=2025-01-03T09:28:29.834802055+03:00 level=error msg="Partial data response error" dsUid=VictoriaLogs error="failed to parse datasource settings: json: cannot unmarshal object into Go value of type string" pluginId=victoriametrics-logs-datasource refID=log-volume-A status=500 statusSource=plugin endpoint=queryData uname=admin dsName=VictoriaLogs
2025-01-03T06:28:29.834856877Z logger=plugin.victoriametrics-logs-datasource t=2025-01-03T09:28:29.834828551+03:00 level=error msg="Plugin Request Completed" status=error uname=admin endpoint=queryData duration=129.61µs pluginId=victoriametrics-logs-datasource statusSource=plugin dsName=VictoriaLogs dsUid=VictoriaLogs

but at the same time the connection test is successful:

[Heyzi]

after several tests, we managed to find out that version v0.13.0 does not have this error...
v0.13.2 - broken
v0.13.1 - not tested

[s5unty]

• v0.13.2 - broken
• v0.13.1 - ok
• victorialogs: v1.4.0
• grafana: v11.3.0 (d9455ff7db)
  

[lostz]

Same as I

[anch665]

Similar problem

Grafana 11.4.0
victorialogs v1.4.0
victoriametrics-logs-datasource v0.13.2

[dmitryk-dk]

Hi @anch665 , @Heyzi , @lostz , @s5unty ! The issue was fixed in the v0.13.3 release. Please check it. If you find any problems, feel free to reopen the issue