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 and stored in ElasticSearch.

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

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

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"

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