# Percona Monitoring and Management 2.9.0

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      <th class="field-name">Date:</th>
      <td class="field-body">July 14, 2020</td>
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      <th class="field-name">Installation:</th>
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        <a class="reference external" href="https://www.percona.com/doc/percona-monitoring-and-management/2.x/setting-up/">Installing Percona Monitoring and Management</a></td>
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Percona Monitoring and Management (PMM) is a free and open-source platform for managing and monitoring MySQL, MongoDB, and PostgreSQL performance.

## Release Highlights

This release brings a major rework of the Query Analytics (QAN) component, completing the migration from Angular to React, and adding new UI functionality and features.

For details, see:

- [PMM-5125](https://jira.percona.com/browse/PMM-5125): Implement new version of QAN
- [PMM-5516](https://jira.percona.com/browse/PMM-5516): QAN migration to React and new UI implementation

You can read more in the accompanying blog post ([here](https://www.percona.com/blog/2020/07/16/improvements-to-query-analytics-qan-component-of-percona-monitoring-and-management/)).

## New Features

- [PMM-6124](https://jira.percona.com/browse/PMM-6124): New dashboards: MongoDB Replica Set Summary and MongoDB Cluster Summary
- [PMM-1027](https://jira.percona.com/browse/PMM-1027): New dashboard: MySQL User Details (`INFORMATION_SCHEMA.CLIENT_STATISTICS`)
- [PMM-5604](https://jira.percona.com/browse/PMM-5604): User interface for MongoDB EXPLAIN
- [PMM-5563](https://jira.percona.com/browse/PMM-5563): Per-Service and per-Node Annotations (This completes the work on improvements to the Annotation functionality.)

## Improvements

- [PMM-6114](https://jira.percona.com/browse/PMM-6114): Sort Agents, Nodes, and Services alphabetically by name in Inventory page (Thanks to user `debug` for reporting this issue)
- [PMM-6147](https://jira.percona.com/browse/PMM-6147): Update Grafana plugins to latest versions

## Bugs Fixed

- [PMM-5800](https://jira.percona.com/browse/PMM-5800): QAN explain and tables tabs not working after removing MySQL metrics agent
- [PMM-5812](https://jira.percona.com/browse/PMM-5812): Prometheus relabeling broken (`relabel_configs` un-marshal errors) (Thanks to user `b4bufr1k` for reporting this issue)
- [PMM-6184](https://jira.percona.com/browse/PMM-6184): MongoDB Instances Compare dashboard shows MySQL metric
- [PMM-5941](https://jira.percona.com/browse/PMM-5941): Stacked Incoming/Outgoing Network Traffic graphs in MySQL Instances Overview dashboard prevents comparison
- [PMM-6194](https://jira.percona.com/browse/PMM-6194): Missing UID for Advanced Data Exploration dashboard
- [PMM-6191](https://jira.percona.com/browse/PMM-6191): Incorrect computation for Prometheus Process CPU Usage panel values in Prometheus dashboard
- [PMM-6175](https://jira.percona.com/browse/PMM-6175): Node Overview dashboard shows unit for unit-less value ‘Top I/O Load’