# Percona Monitoring and Management 2.8.0
Percona Monitoring and Management (PMM) is a free and open-source platform for managing and monitoring MySQL, MongoDB, and PostgreSQL
performance.
## Improvements
- [PMM-544](https://jira.percona.com/browse/PMM-544): Agents, Services and Nodes can now be removed via the ‘PMM Inventory’ page
- [PMM-5706](https://jira.percona.com/browse/PMM-5706): User-installed Grafana plugins unaffected by PMM upgrade
## Bugs Fixed
- [PMM-6153](https://jira.percona.com/browse/PMM-6153): PMM 2.7.0 inoperable when no Internet connectivity
- [PMM-5365](https://jira.percona.com/browse/PMM-5365): Client fails to send non-UTF-8 query analytics content to server (Thanks to user `romulus` for reporting this issue)
- [PMM-5920](https://jira.percona.com/browse/PMM-5920): Incorrect metric used in formula for “Top Users by Rows Fetched/Read” graph
- [PMM-6084](https://jira.percona.com/browse/PMM-6084): Annotations not showing consistently on dashboards
- [PMM-6011](https://jira.percona.com/browse/PMM-6011): No data in MongoDB Cluster summary, RocksDB & MMAPv1 details
- [PMM-5987](https://jira.percona.com/browse/PMM-5987): Incorrect total value for virtual memory utilization