# 9.2 Infrastructure health

OpenCRVS monitoring tools let you measure and view critical metrics such as available disk space, used memory and total CPU load. This information can be used to proactively increase the available resources when the demand increases. These metrics are collected by a tool called [Metricbeat](https://www.elastic.co/beats/metricbeat) and stored in ElasticSearch.

{% hint style="info" %}
Notice that these metrics are not stored indefinitely. The default installation of OpenCRVS keeps both the metric measurements and system logs only for 3 days. The rollover policy is configured in the `infrastructure/monitoring/beats/rollover-policy.json` file. This file can be overwritten in the country config Docker compose files
{% endhint %}

![](https://content.gitbook.com/content/l7Cjlh2y2hlCBlt6R76C/blobs/is6XVnUjSing4t9EdB2C/image.png)

### Available disk space

To see the amount of available disk space, navigate to **Metrics Explorer** (Observability -> Metrics -> Metrics Explorer). You can see the current usage of different storage devices by selecting a Max value of `system.filesystem.used.pct` grouped by `host.hostname` and `system.filesystem.device_name`

![](https://content.gitbook.com/content/l7Cjlh2y2hlCBlt6R76C/blobs/vO0vqiCs1fOo8jR0HABj/image.png)

The default installation of OpenCRVS uses an encrypted disk for data storage on all nodes named `/dev/mapper/cryptfs` . You filter the listed devices to only show these disks by using the following search clause:

`system.filesystem.device_name : "/dev/mapper/cryptfs"`

![](https://content.gitbook.com/content/l7Cjlh2y2hlCBlt6R76C/blobs/GOOg90eNe4M8BuWSLUb7/image.png)

### Common infrastructure metrics

|                      | Value   | Metric                         | Grouped by                                                            | Filtered by                                             |
| -------------------- | ------- | ------------------------------ | --------------------------------------------------------------------- | ------------------------------------------------------- |
| Available disk space | Max     | `system.filesystem.used.pct`   | `host.hostname` `system.filesystem.device_name`                       | `system.filesystem.device_name : "/dev/mapper/cryptfs"` |
| CPU usage            | Average | `system.process.cpu.total.pct` | `host.hostname`                                                       |                                                         |
| Memory usage         | Max     | `docker.memory.usage.pct`      | `host.hostname docker.container.labels.com_docker_swarm_service_name` |                                                         |

#### Read more

* [Host metrics](https://www.elastic.co/guide/en/observability/master/host-metrics.html)