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host

Looks at the current host for listening network endpoints. It uses the /proc filesystem and requires the SYS_PTRACE and DAC_READ_SEARCH capabilities so that it can determine what processes own the listening sockets.

It will look for all listening sockets on TCP and UDP over IPv4 and IPv6.

Observer Type: host

Observer Source Code

Configuration

Config option Required Type Description
omitPIDDimension no bool If true, the pid dimension will be omitted from the generated endpoints, which means it will not appear on datapoints emitted by monitors instantiated from discovery rules matching this endpoint. (default: false)
pollIntervalSeconds no integer (default: 10)

Target Variables

The following fields are available on targets generated by this observer and can be used in discovery rules.

Name Type Description
command string The full command used to invoke this process, including the executable itself at the beginning.
has_port string Set to true if the endpoint has a port assigned to it. This will be false for endpoints that represent a host/container as a whole.
ip_address string The IP address of the endpoint if the host is in the from of an IPv4 address
is_ipv6 bool Will be true if the endpoint is IPv6.
network_port string An alias for port
discovered_by string The observer that discovered this endpoint
host string The hostname/IP address of the endpoint. If this is an IPv6 address, it will be surrounded by [ and ].
id string
name string A observer assigned name of the endpoint. For example, if using the k8s-api observer, name will be the port name in the pod spec, if any.
port integer The TCP/UDP port number of the endpoint
port_type string TCP or UDP
target string The type of the thing that this endpoint directly refers to. If the endpoint has a host and port associated with it (most common), the value will be hostport. Other possible values are: pod, container, host. See the docs for the specific observer you are using for more details on what types that observer emits.

Dimensions

These dimensions are added to all metrics that are emitted for this discovery target. These variables are also available to use as variables in discovery rules.

Name Description
pid The PID of the process that owns the listening endpoint