Plugin unavailable

[TimShar2021]

Query inspector to troubleshoot issues:

• Plugin unavailable
  Object
  status:500
  statusText:""
  data:Object
  message:"Plugin unavailable"
  messageId:"plugin.unavailable"
  statusCode:500
  traceID:""
  config:Object
  url:"api/ds/query?ds_type=grafana-clickhouse-datasource&requestId=explore_7ki"
  method:"POST"
  data:Object
  requestId:"explore_7ki"
  hideFromInspector:false
  headers:Object
  retry:0
  traceId:undefined
  message:"Plugin unavailable"

What happened:

The error "Plugin is unavailable" occurs.

What you expected to happen:

Run query

How to reproduce it (as minimally and precisely as possible):

Screenshots

Anything else we need to know?:

Environment:

• Grafana version:11.0.0
• Plugin version: 4.5.1
• OS Grafana is installed on: linux
• User OS & Browser: Ubuntu & Chrome
• Others:--

[SpencerTorres]

Hey thanks for submitting an issue. I see you have Grafana installed on linux, but is it running inside a docker container at all? What version of ClickHouse are you using and where is that hosted? What does it say when you test the connection on the datasource configuration page? Do you have any logs to share from Grafana or ClickHouse? Or even a network/console log on the browser?

This info should help narrow things down. I've seen this error message before but it's a bit vague so it could be many different things.

Thanks!

[TimShar2021]

Thank you for the answer!

Yes, it works inside the container. The CH logs show:
level=error msg="Internal server error" error="[plugin.unavailable] plugin unavailable".

Since last week, sources using the plugin have been failing. We tried changing the connection settings (e.g., Query Timeout (seconds): 0.1), which sometimes helps and allows a couple of queries to go through. However, the "Plugin is unavailable" error still occurs.

[SpencerTorres]

Do you have any of the surrounding logs? Perhaps you could enable debug logging in Grafana. The other info would be helpful too such as ClickHouse environment + version

[TimShar2021]

ClickHouse: 24.3.5.46

container_image
docker.io/grafana/grafana:11.0.0

container_name
grafana

container_name_extracted
grafana

forwarder
k8s-vector

message level=error msg="Internal server error" error="[plugin.unavailable] plugin unavailable"

node_labels_kubernetes_io_os
linux

[SpencerTorres]

Very odd. I wonder if the plugin process is crashing.

@bossinc do you have any idea on how we can narrow this down? It's a vague error, wondering if you've seen it in other datasources

[adamyeats]

@SpencerTorres @TimShar2021 The "Plugin unavailable" message generally stems from the plugin process not starting or being unavailable (e.g due to a panic). In order to help us debug, a minimal reproducible test case would be helpful, or more context in the form of logs from Grafana or searching for the gpx_clickhouse_linux(_(amd64|arm))? binary in /var/log/syslog or similar.