Host

Host Attributes

A host is defined as a computing instance. For example, physical servers, virtual machines, switches or disk array.

Attribute	Type	Description	Examples	Stability
host.arch	string	The CPU architecture the host system is running on.	amd64; arm32; arm64
host.cpu.cache.l2.size	int	The amount of level 2 memory cache available to the processor (in Bytes).	12288000
host.cpu.family	string	Family or generation of the CPU.	6; PA-RISC 1.1e
host.cpu.model.id	string	Model identifier. It provides more granular information about the CPU, distinguishing it from other CPUs within the same family.	6; 9000/778/B180L
host.cpu.model.name	string	Model designation of the processor.	11th Gen Intel(R) Core(TM) i7-1185G7 @ 3.00GHz
host.cpu.stepping	string	Stepping or core revisions.	1; r1p1
host.cpu.vendor.id	string	Processor manufacturer identifier. A maximum 12-character string. [1]	GenuineIntel
host.id	string	Unique host ID. For Cloud, this must be the instance_id assigned by the cloud provider. For non-containerized systems, this should be the machine-id. See the table below for the sources to use to determine the machine-id based on operating system.	fdbf79e8af94cb7f9e8df36789187052
host.image.id	string	VM image ID or host OS image ID. For Cloud, this value is from the provider.	ami-07b06b442921831e5
host.image.name	string	Name of the VM image or OS install the host was instantiated from.	infra-ami-eks-worker-node-7d4ec78312; CentOS-8-x86_64-1905
host.image.version	string	The version string of the VM image or host OS as defined in Version Attributes.	0.1
host.ip	string[]	Available IP addresses of the host, excluding loopback interfaces. [2]	["192.168.1.140", "fe80::abc2:4a28:737a:609e"]
host.mac	string[]	Available MAC addresses of the host, excluding loopback interfaces. [3]	["AC-DE-48-23-45-67", "AC-DE-48-23-45-67-01-9F"]
host.name	string	Name of the host. On Unix systems, it may contain what the hostname command returns, or the fully qualified hostname, or another name specified by the user.	opentelemetry-test
host.type	string	Type of host. For Cloud, this must be the machine type.	n1-standard-1

[1] host.cpu.vendor.id: CPUID command returns the vendor ID string in EBX, EDX and ECX registers. Writing these to memory in this order results in a 12-character string.

[2] host.ip: IPv4 Addresses MUST be specified in dotted-quad notation. IPv6 addresses MUST be specified in the RFC 5952 format.

[3] host.mac: MAC Addresses MUST be represented in IEEE RA hexadecimal form: as hyphen-separated octets in uppercase hexadecimal form from most to least significant.

host.arch has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.

Value	Description	Stability
amd64	AMD64
arm32	ARM32
arm64	ARM64
ia64	Itanium
ppc32	32-bit PowerPC
ppc64	64-bit PowerPC
s390x	IBM z/Architecture
x86	32-bit x86