Reference: MAAS metrics

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This page provides a MAAS metrics reference, categorised into two sections: “Cluster metrics” and “Performance metrics.”

Cluster metrics

maas_machines

The number of machines known by MAAS, by status

• Type: Gauge
• Unit: Count of machines
• [details=“Labels”] | Label | Description | | — | — | | maas_id | MAAS cluster UUID | | status | machine status | [/details]

maas_nodes

Number of nodes known by MAAS per type (machine, device or controller)

• Type: Gauge

• Unit: Count of machines

• [details=“Labels”]

  Label	Description
  maas_id	MAAS cluster UUID
  type	type of node (machine/device/controller)

  [/details]

maas_net_spaces

Number of network spaces

• Type: Gauge

• Unit: Count of spaces

• [details=“Labels”]

  Label	Description
  maas_id	MAAS cluster UUID

  [/details]

maas_net_fabrics

Number of network fabrics

• Type: Gauge

• Unit: Count of fabrics

• [details=“Labels”]

  Label	Description
  maas_id	MAAS cluster UUID

  [/details]

maas_net_vlans

Number of network VLANs

• Type: Gauge

• Unit: Count of vlans

• [details=“Labels”]

  Label	Description
  maas_id	MAAS cluster UUID

  [/details]

maas_net_subnets_v4

Number of IPv4 subnets

• Type: Gauge

• Unit: Count ipv4 subnets

• [details=“Labels”]

  Label	Description
  maas_id	MAAS cluster UUID

  [/details]

maas_net_subnets_v6

Number of IPv6 subnets

• Type: Gauge

• Unit: Count of ipv6 subnets

• [details=“Labels”]

  Label	Description
  maas_id	MAAS cluster UUID

  [/details]

maas_net_subnet_ip_count

Number of IPs in a subnet by status

• Type: Gauge

• Unit: Count of ips

• [details=“Labels”]

  Label	Description
  maas_id	MAAS cluster UUID
  status	available or used

  [/details]

maas_net_subnet_ip_dynamic

Number of used dynamic IPs in a subnet

• Type: Gauge

• Unit: Count of used dynamic ips

• [details=“Labels”]

  Label	Description
  maas_id	MAAS cluster UUID
  status	available or used
  cidr	subnet address

  [/details]

maas_net_subnet_ip_reserved

Number of used reserved IPs in a subnet

• Type: Gauge

• Unit: Count of used reserved ips

• [details=“Labels”]

  Label	Description
  maas_id	MAAS cluster UUID
  status	available or used
  cidr	subnet address

  [/details]

maas_net_subnet_ip_static

Number of used static IPs in a subnet

• Type: Gauge

• Unit: Count of used static ips

• [details=“Labels”]

  Label	Description
  maas_id	MAAS cluster UUID
  status	available or used
  cidr	subnet address

  [/details]

maas_machines_total_mem

Amount of combined memory for all machines

• Type: Gauge

• Unit: Megabytes of memory

• [details=“Labels”]

  Label	Description
  maas_id	MAAS cluster UUID

  [/details]

maas_machines_total_cpu

Amount of combined CPU counts for all machines

• Type: Gauge

• Unit: Count of cpus

• [details=“Labels”]

  Label	Description
  maas_id	MAAS cluster UUID

  [/details]

maas_machines_total_storage

Amount of combined storage space for all machines

• Type: Gauge

• Unit: Bytes of storage

• [details=“Labels”]

  Label	Description
  maas_id	MAAS cluster UUID

  [/details]

maas_kvm_pods

Number of KVM hosts

• Type: Gauge

• Unit: Count of kvm hosts

• [details=“Labels”]

  Label	Description
  maas_id	MAAS cluster UUID

  [/details]

maas_kvm_machines

Number of virtual machines allocated in KVM hosts

• Type: Gauge

• Unit: Count of virtual machines

• [details=“Labels”]

  Label	Description
  maas_id	MAAS cluster UUID

  [/details]

maas_kvm_cores

Total number of CPU cores present on KVM hosts

• Type: Gauge

• Unit: Count of kvm cores

• [details=“Labels”]

  Label	Description
  maas_id	MAAS cluster UUID
  status	available or used

  [/details]

maas_kvm_memory

Total amount of RAM present on KVM hosts

• Type: Gauge

• Unit: Megabytes of memory

• [details=“Labels”]

  Label	Description
  maas_id	MAAS cluster UUID
  status	available or used

  [/details]

maas_kvm_storage

Total amount of storage space present on KVM hosts

• Type: Gauge

• Unit: Bytes of storage

• [details=“Labels”]

  Label	Description
  maas_id	MAAS cluster UUID
  status	available or used

  [/details]

maas_kvm_overcommit_cores

Total number of CPU cores present on KVM hosts adjusted by the overcommit setting

• Type: Gauge

• Unit: Overcommitted number of cores

• [details=“Labels”]

  Label	Description
  maas_id	MAAS cluster UUID

  [/details]

maas_kvm_overcommit_memory

Total amount of RAM present on KVM hosts adjusted by the overcommit setting

• Type: Gauge

• Unit: Overcommitted megabytes of memory

• [details=“Labels”]

  Label	Description
  maas_id	MAAS cluster UUID

  [/details]

maas_machine_arches

Total number of machines per architecture

• Type: Gauge

• Unit: Count of machines

• [details=“Labels”]

  Label	Description
  maas_id	MAAS cluster UUID
  arch	machine architecture

  [/details]

maas_custom_static_images_uploaded

Number of custom OS images present in MAAS

• Type: Gauge

• Unit: Count of images

• [details=“Labels”]

  Label	Description
  maas_id	MAAS cluster UUID
  base_image	custom image base OS
  file_type	image file type

  [/details]

maas_custom_static_images_deployed

Number deployed machines running custom OS images

• Type: Gauge

• Unit: Count of images

• [details=“Labels”]

  Label	Description
  maas_id	MAAS cluster UUID

  [/details]

maas_vmcluster_projects

Number of KVM clusters

• Type: Gauge

• Unit: Count of projects

• [details=“Labels”]

  Label	Description
  maas_id	MAAS cluster UUID

  [/details]

maas_vmcluster_hosts

Total number of KVM hosts in clusters

• Type: Gauge

• Unit: Count of vm hosts

• [details=“Labels”]

  Label	Description
  maas_id	MAAS cluster UUID

  [/details]

maas_vmcluster_vms

Total number of virtual machines in KVM clusters

• Type: Gauge

• Unit: Count of virtual machines

• [details=“Labels”]

  Label	Description
  maas_id	MAAS cluster UUID

  [/details]

Performance metrics

maas_http_request_latency

The time MAAS takes to process a REST API call. It doesn’t include any time associated with network, including proxy processing

• Type: Histogram

• Unit: Seconds

• [details=“Labels”]

  Label	Description
  host	controller IP address
  maas_id	MAAS cluster UUID
  method	HTTP method
  op	REST API operation name
  path	REST API endpoint
  status	HTTP response status code

  [/details]

maas_http_response_size

The size of REST API responses

• Type: Histogram

• Unit: Bytes

• [details=“Labels”]

  Label	Description
  host	controller IP address
  maas_id	MAAS cluster UUID
  method	HTTP method
  op	REST API operation name
  path	REST API endpoint
  status	HTTP response status code

  [/details]

maas_http_request_query_count

The number of database operations executed per REST API call

• Type: Histogram

• Unit: None

• [details=“Labels”]

  Label	Description
  host	controller IP address
  maas_id	MAAS cluster UUID
  method	HTTP method
  op	REST API operation name
  path	REST API endpoint
  status	HTTP response status code

  [/details]

maas_http_request_query_latency

The time required to perform a single database operation during a REST API call. The database latency is measured from the moment MAAS starts a transaction until it gets the response

• Type: Histogram

• Unit: Seconds

• [details=“Labels”]

  Label	Description
  host	controller IP address
  maas_id	MAAS cluster UUID
  method	HTTP method
  op	REST API operation name
  path	REST API endpoint
  status	HTTP response status code

  [/details]

maas_rack_region_rpc_call_latency

The time a Region controller takes to perform a RPC call to a Rack controller. The latency is measured from the request to the response.

• Type: Histogram

• Unit: Seconds

• [details=“Labels”]

  Label	Description
  call	RPC operation
  host	controller IP address
  maas_id	MAAS cluster UUID

  [/details]

maas_region_rack_rpc_call_latency

The time a Rack controller takes to perform a RPC call to a Region controller. The latency is measured from the request to the response.

• Type: Histogram

• Unit: Seconds

• [details=“Labels”]

  Label	Description
  call	RPC operation
  host	controller IP address
  maas_id	MAAS cluster UUID

  [/details]

maas_websocket_call_query_count

The number of database operations executed per WebSocket call

• Type: Histogram

• Unit: None

• [details=“Labels”]

  Label	Description
  call	WS operation
  host	controller IP address
  maas_id	MAAS cluster UUID

  [/details]

maas_websocket_call_query_latency

The time required to perform a single database operation during a WebSocket call. The database latency is measured from the moment MAAS starts a transaction until it gets the response

• Type: Histogram

• Unit: Seconds

• [details=“Labels”]

  Label	Description
  call	WS operation
  host	controller IP address
  maas_id	MAAS cluster UUID

  [/details]

maas_websocket_call_latency

The time MAAS takes to process a WebSocket call. It doesn’t include any time associated with network, including proxy processing

• Type: Histogram

• Unit: Seconds

• [details=“Labels”]

  Label	Description
  call	WS operation
  host	controller IP address
  maas_id	MAAS cluster UUID

  [/details]

maas_dns_update_latency

The time MAAS takes to setup all zones in the DNS service per update type, which can be ‘reload’ (cold-start) or ‘dynamic’ (RNDC operation)

• Type: Histogram

• Unit: Seconds

• [details=“Labels”]

  Label	Description
  host	controller IP address
  maas_id	MAAS cluster UUID
  update_type	reload or dynamic

  [/details]

maas_dns_full_zonefile_write_count

Count of full DNS zone rewrite operations

• Type: Counter

• Unit: None

• [details=“Labels”]

  Label	Description
  host	controller IP address
  maas_id	MAAS cluster UUID
  zone	DNS zone name

  [/details]

maas_dns_dynamic_update_count

Count of dynamic DNS zone update operations

• Type: Counter

• Unit: None

• [details=“Labels”]

  Label	Description
  host	controller IP address
  maas_id	MAAS cluster UUID
  zone	DNS zone name

  [/details]

maas_rpc_pool_exhaustion_count

number of occurrences of the RPC connection pool allocate its maximum number of connections

• Type: Counter

• Unit: None

• [details=“Labels”]

  Label	Description
  host	controller IP address
  maas_id	MAAS cluster UUID

  [/details]

maas_lxd_fetch_machine_failure

Total number of failures for fetching LXD machines

• Type: Counter

• Unit: None

• [details=“Labels”]

  Label	Description
  host	controller IP address
  maas_id	MAAS cluster UUID

  [/details]

maas_lxd_disk_creation_failure

Total number of failures of LXD disk creation

• Type: Counter

• Unit: None

• [details=“Labels”]

  Label	Description
  host	controller IP address
  maas_id	MAAS cluster UUID

  [/details]

maas_virsh_storage_pool_creation_failure

Total number of failures of virsh storage pool creation

• Type: Counter

• Unit: None

• [details=“Labels”]

  Label	Description
  host	controller IP address
  maas_id	MAAS cluster UUID

  [/details]

maas_virsh_fetch_mac_failure

Total number of failures of virsh interfaces enumeration

• Type: Counter

• Unit: None

• [details=“Labels”]

  Label	Description
  host	controller IP address
  maas_id	MAAS cluster UUID

  [/details]

maas_virsh_fetch_description_failure

Total number of failures of virsh domain description

• Type: Counter

• Unit: None

• [details=“Labels”]

  Label	Description
  host	controller IP address
  maas_id	MAAS cluster UUID

  [/details]

maas_tftp_file_transfer_latency

Time required to transfer a file to a machine using TFTP

• Type: Histogram

• Unit: Seconds

• [details=“Labels”]

  Label	Description
  host	controller IP address
  maas_id	MAAS cluster UUID
  filename	file requested

  [/details]