Host fields

Elastic Stack Serverless

A host is defined as a general computing instance.

ECS host.* fields should be populated with details about the host on which the event happened, or from which the measurement was taken. Host types include hardware, virtual machines, Docker containers, and Kubernetes nodes.

Fields

Field	Description	Level
host.architecture	Operating system architecture. type: keyword example: x86_64 host.arch	core
host.cpu.usage	Percent CPU used which is normalized by the number of CPU cores and it ranges from 0 to 1. Scaling factor: 1000. For example: For a two core host, this value should be the average of the two cores, between 0 and 1. type: scaled_float system.cpu.utilization	extended
host.disk.read.bytes	The total number of bytes (gauge) read successfully (aggregated from all disks) since the last metric collection. type: long system.disk.io	extended
host.disk.write.bytes	The total number of bytes (gauge) written successfully (aggregated from all disks) since the last metric collection. type: long system.disk.io	extended
host.domain	Name of the domain of which the host is a member. For example, on Windows this could be the host’s Active Directory domain or NetBIOS domain name. For Linux this could be the domain of the host’s LDAP provider. type: keyword example: CONTOSO	extended
host.hostname	Hostname of the host. It normally contains what the hostname command returns on the host machine. type: keyword	core
host.id	Unique host id. As hostname is not always unique, use values that are meaningful in your environment. Example: The current usage of beat.name. type: keyword host.id	core
host.ip	Host ip addresses. type: ip Note: this field should contain an array of values. host.ip	core
host.mac	Host MAC addresses. The notation format from RFC 7042 is suggested: Each octet (that is, 8-bit byte) is represented by two [uppercase] hexadecimal digits giving the value of the octet as an unsigned integer. Successive octets are separated by a hyphen. type: keyword Note: this field should contain an array of values. example: ["00-00-5E-00-53-23", "00-00-5E-00-53-24"] host.mac	core
host.name	Name of the host. It can contain what hostname returns on Unix systems, the fully qualified domain name (FQDN), or a name specified by the user. The recommended value is the lowercase FQDN of the host. type: keyword host.name	core
host.network.egress.bytes	The number of bytes (gauge) sent out on all network interfaces by the host since the last metric collection. type: long system.network.io	extended
host.network.egress.packets	The number of packets (gauge) sent out on all network interfaces by the host since the last metric collection. type: long system.network.packets	extended
host.network.ingress.bytes	The number of bytes received (gauge) on all network interfaces by the host since the last metric collection. type: long system.network.io	extended
host.network.ingress.packets	The number of packets (gauge) received on all network interfaces by the host since the last metric collection. type: long system.network.packets	extended
host.type	Type of host. For Cloud providers this can be the machine type like t2.medium. If vm, this could be the container, for example, or other information meaningful in your environment. type: keyword host.type	core
host.uptime	Seconds the host has been up. type: long example: 1325 system.uptime	extended

Beta Fields

Field	Description	Level
host.boot.id	Linux boot uuid taken from /proc/sys/kernel/random/boot_id. Note the boot_id value from /proc may or may not be the same in containers as on the host. Some container runtimes will bind mount a new boot_id value onto the proc file in each container. type: keyword example: 88a1f0ed-5ae5-41ee-af6b-41921c311872	extended
host.pid_ns_ino	This is the inode number of the namespace in the namespace file system (nsfs). Unsigned int inum in include/linux/ns_common.h. type: keyword example: 256383	extended