Feature pages are design documents that developers have created while collaborating on oVirt.

Most of them areoutdated, but provide historical design context.

They arenotuser documentation and should not be treated as such.

Documentation is available here.

Please follow the links for the updated documentation:

Metrics Store - Collected Data

Statistics Collection

collectd gathers oVirt statistics from the oVirt engine and hypervisors, and transfers the data to fluentd.

The data is then transformed, enriched, and sent to the remote metrics store.

oVirt Metrics - collectd loaded plugins list

Disk

Disk utilization: Sectors read/written, number of read/write actions, average time an IO-operation took to complete.

CPU

CPU time spent in the system, user, nice, idle, wait, interrupt, softirq and steal.

Memory

Collects information about the used, buffered, cached and free RAM memory.

Load

The average number of runnable tasks in the run-queue, for one, five, and fifteen minute average.

Virt (Applies only to oVirt hypervisors).

CPU, memory, disk, and network I/O statistics from virtual machines.

NFS

NFS usage: A count of the number of procedure calls for each procedure, grouped by version and whether the system runs as a server or client. NFS version 4 is not supported for now.

Entropy

Amount of entropy available to the system.

Swap

Records the free, cached, and used memory utilized by swap and swap in/out.

DF

Collects file system (incl. the hard drive) usage information such as free, reserved, and used space.

Interface

Collects network traffic download and upload data, including the number of octets, packets, and errors transmitted and received, for each network interface.

Aggregation

Aggregates multiple values into a single value, using one or several consolidation functions, e.g. summation and average.

Processes

Collects the number of processes, grouped by their state (incl. running, blocked, sleeping, paging, stopped and zombies).

PostgreSQL (Applies only to oVirt engine).

PostgreSQL database statistics: custom_deadlocks, table_states, disk_io, disk_usage.

Logs Collection

fluentd collects oVirt logs from the oVirt engine and hypervisors. The data is then transformed, enriched and sent to the remote metrics store.

Logs collected from the engine machine include:

  • engine.log

Logs collected from the hypervisors machines include:

  • vdsm.log