Legacy Monitoring and Logging agent metrics

When you install the Cloud Monitoring and Cloud Logging agents on your VM instances, the agents transmit data for the metric types listed in this document to Monitoring. For information about choosing the right agent, see Ops Agent overview.

Important: You must install the Monitoring agent to collect most of the metrics listed in this document. The Ops Agent collects similar metrics, with a few differences; see Ops Agent metrics for the list of Ops Agent metrics and Metrics from the Ops Agent and the Monitoring agent for the list of differences.

To collect the metrics labeled "logging agent" in the "agent" table, you must install the Logging agent.

• For a general explanation of the entries in the tables, including information about values like DELTA and GAUGE, see Metric types.

• For information about the units used in the metric lists, see the unit field in the MetricDescriptor reference.

• For information about statements of the form “Sampled every x seconds” and “After sampling, data is not visible for up to y seconds”, see Additional information: metadata.

• The resource-hierarchy level tells you if the metric is written at the project, organization, or folder level(s). When the level is not specified in the metric descriptor, the metric writes at the project level by default.

• For information about the meaning of launch stages such as GA (General Availability) and BETA (Preview), see Product launch stages.

Metrics from the Ops Agent and the Monitoring agent

The Monitoring agent has two entirely different implementations, one for Linux VMs and one for Windows VMs. The Ops Agent runs on both Linux and Windows VMs.

Differences in metric collection

Note: Metrics with a description that includes the statement "Linux only" aren't collected by the Monitoring agent for Windows VMs. However, the Ops Agent collects those metrics on both Linux and Windows VMs.

The following table describes differences in the data ingested by the Ops Agent and the Monitoring agent.

Metric type, omitting agent.googleapis.com	Ops Agent (GA)^†	Ops Agent (Preview)^†	Monitoring agent
cpu_state	The possible values for Windows are idle, interrupt, system and user.	The possible values for Windows are idle, interrupt, system and user.	The possible values for Windows are idle and used.
disk/bytes_used and disk/percent_used	Ingested with the full path in the device label; for example, /dev/sda15. Not ingested for virtual devices like tmpfs and udev.	Ingested without /dev in the path in the device label; for example, sda15. Ingested for virtual devices like tmpfs and udev.	Ingested without /dev in the path in the device label; for example, sda15. Ingested for virtual devices like tmpfs and udev.

^† The GA column refers to Ops Agent versions 2.0.0 and higher. The Preview column refers to Ops Agent versions less than 2.0.0.

Agent metrics

Metrics from the Monitoring agent and from the Logging agent running on VM instances in Google Cloud and AWS.

The following list was last generated at 2026-05-14 16:07:40 UTC. For more information about this process, see About the lists.

Generated at 2026-05-14 16:07:40 UTC.