# pmm 2.2.0 not showing proxysql backend : 'No Data' and hostgroup size

**URL:** <https://forums.percona.com/t/pmm-2-2-0-not-showing-proxysql-backend-no-data-and-hostgroup-size/7382>\
**Category:** PMM 2.x\
**Created:** [January 14, 2020, 11:09am UTC](https://forums.percona.com/t/pmm-2-2-0-not-showing-proxysql-backend-no-data-and-hostgroup-size/7382 "2020-01-14T11:09:00Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![DavidD](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/davidd/32/1244_2.png) [@DavidD](https://forums.percona.com/u/DavidD)\
**Post date:** [January 14, 2020, 11:09am UTC](https://forums.percona.com/t/pmm-2-2-0-not-showing-proxysql-backend-no-data-and-hostgroup-size/7382/1 "2020-01-14T11:09:00Z")

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Hello

I’m just migrating from PMM 1 to PMM 2.2.0.

I added all my nodes, I have 1 proxysql (v1) and 3 pxc (5.7) behind

Whan I go in Proxysql Instance Summary I have some graph working, but :

- Hostgroup Size
- Active Backend Connections
- Failed Backend Connections
- Client Frontend Connections
- Endpoint Status
- Queries Routed
- Connection Free
- Latency  
show “No Data” or nothing

In the previous version I had all correctly.

I checked Prometheus targets and I have no issue.

In the same kind I have sometimes no “Galera Cluster Size” in PXC/Galera Nodes Compare and “Only queries that return single series/table is supported” in gcache Size or FC

regards  
David

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<div class="post-metadata">

**Author:** ![DavidD](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/davidd/32/1244_2.png) [@DavidD](https://forums.percona.com/u/DavidD)\
**Post date:** [January 22, 2020, 10:36am UTC](https://forums.percona.com/t/pmm-2-2-0-not-showing-proxysql-backend-no-data-and-hostgroup-size/7382/2 "2020-01-22T10:36:44Z")

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Hi,  
I answer myself.  
Regarding the promQL queries I see sometime a variable $node\_namegroup instead of $hostgroup? Changing it correct the issue  
regards