Logstash

Collect logs from a Logstash agent

status: stable role: sidecar role: aggregator delivery: best effort acknowledgements: yes egress: stream state: stateless output: log
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Configuration

Example configurations 

{
  "sources": {
    "my_source_id": {
      "type": "logstash",
      "address": "0.0.0.0:9000"
    }
  }
}
[sources.my_source_id]
type = "logstash"
address = "0.0.0.0:9000"

sources:
  my_source_id:
    type: logstash
    address: 0.0.0.0:9000

{
  "sources": {
    "my_source_id": {
      "type": "logstash",
      "address": "0.0.0.0:9000",
      "receive_buffer_bytes": 65536
    }
  }
}
[sources.my_source_id]
type = "logstash"
address = "0.0.0.0:9000"
receive_buffer_bytes = 65_536

sources:
  my_source_id:
    type: logstash
    address: 0.0.0.0:9000
    receive_buffer_bytes: 65536

acknowledgements

optional object

Deprecated

This field is deprecated.

Controls how acknowledgements are handled by this source.

This setting is deprecated in favor of enabling acknowledgements at the global or sink level.

Enabling or disabling acknowledgements at the source level has no effect on acknowledgement behavior.

See End-to-end Acknowledgements for more information on how event acknowledgement is handled.

acknowledgements.enabled

optional bool
Whether or not end-to-end acknowledgements are enabled for this source.

address

required string literal

The socket address to listen for connections on, or systemd{#N} to use the Nth socket passed by systemd socket activation.

If a socket address is used, it must include a port.

Examples 
"0.0.0.0:9000"
"systemd"
"systemd#3"

connection_limit

optional uint
The maximum number of TCP connections that are allowed at any given time.

keepalive

optional object
TCP keepalive settings for socket-based components.

keepalive.time_secs

optional uint
The time to wait before starting to send TCP keepalive probes on an idle connection.

receive_buffer_bytes

optional uint
The size of the receive buffer used for each connection.
Examples 
65536

tls

optional object
TlsEnableableConfig for sources, adding metadata from the client certificate.

tls.alpn_protocols

optional [string]

Sets the list of supported ALPN protocols.

Declare the supported ALPN protocols, which are used during negotiation with peer. They are prioritized in the order that they are defined.

tls.ca_file

optional string literal

Absolute path to an additional CA certificate file.

The certificate must be in the DER or PEM (X.509) format. Additionally, the certificate can be provided as an inline string in PEM format.

Examples 
"/path/to/certificate_authority.crt"

tls.client_metadata_key

optional string literal
Event field for client certificate metadata.

tls.crt_file

optional string literal

Absolute path to a certificate file used to identify this server.

The certificate must be in DER, PEM (X.509), or PKCS#12 format. Additionally, the certificate can be provided as an inline string in PEM format.

If this is set, and is not a PKCS#12 archive, key_file must also be set.

Examples 
"/path/to/host_certificate.crt"

tls.enabled

optional bool

Whether or not to require TLS for incoming or outgoing connections.

When enabled and used for incoming connections, an identity certificate is also required. See tls.crt_file for more information.

tls.key_file

optional string literal

Absolute path to a private key file used to identify this server.

The key must be in DER or PEM (PKCS#8) format. Additionally, the key can be provided as an inline string in PEM format.

Examples 
"/path/to/host_certificate.key"

tls.key_pass

optional string literal

Passphrase used to unlock the encrypted key file.

This has no effect unless key_file is set.

Examples 
"${KEY_PASS_ENV_VAR}"
"PassWord1"

tls.verify_certificate

optional bool

Enables certificate verification.

If enabled, certificates must not be expired and must be issued by a trusted issuer. This verification operates in a hierarchical manner, checking that the leaf certificate (the certificate presented by the client/server) is not only valid, but that the issuer of that certificate is also valid, and so on until the verification process reaches a root certificate.

Relevant for both incoming and outgoing connections.

Do NOT set this to false unless you understand the risks of not verifying the validity of certificates.

tls.verify_hostname

optional bool

Enables hostname verification.

If enabled, the hostname used to connect to the remote host must be present in the TLS certificate presented by the remote host, either as the Common Name or as an entry in the Subject Alternative Name extension.

Only relevant for outgoing connections.

Do NOT set this to false unless you understand the risks of not verifying the remote hostname.

Outputs

<component_id>

Default output stream of the component. Use this component’s ID as an input to downstream transforms and sinks.

Output Data

Logs

Warning

The fields shown below will be different if log namespacing is enabled. See Log Namespacing for more details

Line

A Logstash message
Fields
* required string literal
In addition to the defined fields, all fields from the Logstash message are inserted as root level fields.
Examples
hello world
client_metadata optional object
Client TLS metadata.
host required string literal
The IP address the Logstash message was sent from.
Examples
127.0.0.1
source_type required string literal
The name of the source type.
Examples
logstash
timestamp required timestamp

The timestamp field will be set to the first one found of the following:

  1. The timestamp field on the event
  2. The @timestamp field on the event if it can be parsed as a timestamp
  3. The current timestamp

The assigned field, timestamp, could be different depending if you have configured log_schema.timestamp_key.

Examples
2020-10-10T17:07:36.452332Z

Telemetry

Metrics

link

component_discarded_events_total

counter
The number of events dropped by this component.
component_id
The Vector component ID.
component_kind
The Vector component kind.
component_name
Deprecated, use component_id instead. The value is the same as component_id.
component_type
The Vector component type.
host optional
The hostname of the system Vector is running on.
intentional
True if the events were discarded intentionally, like a filter transform, or false if due to an error.
pid optional
The process ID of the Vector instance.

component_errors_total

counter
The total number of errors encountered by this component.
component_id
The Vector component ID.
component_kind
The Vector component kind.
component_name
Deprecated, use component_id instead. The value is the same as component_id.
component_type
The Vector component type.
error_type
The type of the error
host optional
The hostname of the system Vector is running on.
pid optional
The process ID of the Vector instance.
stage
The stage within the component at which the error occurred.

component_received_bytes_total

counter
The number of raw bytes accepted by this component from source origins.
component_id
The Vector component ID.
component_kind
The Vector component kind.
component_name
Deprecated, use component_id instead. The value is the same as component_id.
component_type
The Vector component type.
container_name optional
The name of the container from which the data originated.
file optional
The file from which the data originated.
host optional
The hostname of the system Vector is running on.
mode optional
The connection mode used by the component.
peer_addr optional
The IP from which the data originated.
peer_path optional
The pathname from which the data originated.
pid optional
The process ID of the Vector instance.
pod_name optional
The name of the pod from which the data originated.
uri optional
The sanitized URI from which the data originated.

component_received_event_bytes_total

counter
The number of event bytes accepted by this component either from tagged origins like file and uri, or cumulatively from other origins.
component_id
The Vector component ID.
component_kind
The Vector component kind.
component_name
Deprecated, use component_id instead. The value is the same as component_id.
component_type
The Vector component type.
container_name optional
The name of the container from which the data originated.
file optional
The file from which the data originated.
host optional
The hostname of the system Vector is running on.
mode optional
The connection mode used by the component.
peer_addr optional
The IP from which the data originated.
peer_path optional
The pathname from which the data originated.
pid optional
The process ID of the Vector instance.
pod_name optional
The name of the pod from which the data originated.
uri optional
The sanitized URI from which the data originated.

component_received_events_count

histogram

A histogram of the number of events passed in each internal batch in Vector’s internal topology.

Note that this is separate than sink-level batching. It is mostly useful for low level debugging performance issues in Vector due to small internal batches.

component_id
The Vector component ID.
component_kind
The Vector component kind.
component_name
Deprecated, use component_id instead. The value is the same as component_id.
component_type
The Vector component type.
container_name optional
The name of the container from which the data originated.
file optional
The file from which the data originated.
host optional
The hostname of the system Vector is running on.
mode optional
The connection mode used by the component.
peer_addr optional
The IP from which the data originated.
peer_path optional
The pathname from which the data originated.
pid optional
The process ID of the Vector instance.
pod_name optional
The name of the pod from which the data originated.
uri optional
The sanitized URI from which the data originated.

component_received_events_total

counter
The number of events accepted by this component either from tagged origins like file and uri, or cumulatively from other origins.
component_id
The Vector component ID.
component_kind
The Vector component kind.
component_name
Deprecated, use component_id instead. The value is the same as component_id.
component_type
The Vector component type.
container_name optional
The name of the container from which the data originated.
file optional
The file from which the data originated.
host optional
The hostname of the system Vector is running on.
mode optional
The connection mode used by the component.
peer_addr optional
The IP from which the data originated.
peer_path optional
The pathname from which the data originated.
pid optional
The process ID of the Vector instance.
pod_name optional
The name of the pod from which the data originated.
uri optional
The sanitized URI from which the data originated.

component_sent_event_bytes_total

counter
The total number of event bytes emitted by this component.
component_id
The Vector component ID.
component_kind
The Vector component kind.
component_name
Deprecated, use component_id instead. The value is the same as component_id.
component_type
The Vector component type.
host optional
The hostname of the system Vector is running on.
output optional
The specific output of the component.
pid optional
The process ID of the Vector instance.

component_sent_events_total

counter
The total number of events emitted by this component.
component_id
The Vector component ID.
component_kind
The Vector component kind.
component_name
Deprecated, use component_id instead. The value is the same as component_id.
component_type
The Vector component type.
host optional
The hostname of the system Vector is running on.
output optional
The specific output of the component.
pid optional
The process ID of the Vector instance.

connection_errors_total

counter
The total number of connection errors for this Vector instance.
host optional
The hostname of the system Vector is running on.
pid optional
The process ID of the Vector instance.

connection_send_ack_errors_total

counter
The total number of protocol acknowledgement errors for this Vector instance for source protocols that support acknowledgements.
host optional
The hostname of the system Vector is running on.
pid optional
The process ID of the Vector instance.

decode_errors_total

counter
The total number of decode errors seen when decoding data in a source component.
component_id
The Vector component ID.
component_kind
The Vector component kind.
component_name
Deprecated, use component_id instead. The value is the same as component_id.
component_type
The Vector component type.
host optional
The hostname of the system Vector is running on.
pid optional
The process ID of the Vector instance.

open_connections

gauge
The number of current open connections to Vector.
host optional
The hostname of the system Vector is running on.
pid optional
The process ID of the Vector instance.

source_lag_time_seconds

histogram
The difference between the timestamp recorded in each event and the time when it was ingested, expressed as fractional seconds.
component_id
The Vector component ID.
component_kind
The Vector component kind.
component_name
Deprecated, use component_id instead. The value is the same as component_id.
component_type
The Vector component type.
host optional
The hostname of the system Vector is running on.
pid optional
The process ID of the Vector instance.

Examples

Logstash message from generator input

Given this event...
Logstash input config:

```text
input {
	generator {
		count => 1
	}
}
```

Output if sent to stdout logstash output:

```text
{ "@version" => "1", "@timestamp" => 2021-06-14T20:57:14.230Z, "host" => "c082bb583445", "sequence" => 0, "message" => "Hello world!" }
```
...and this configuration...
sources:
  my_source_id:
    type: logstash

[sources.my_source_id]
type = "logstash"

{
  "sources": {
    "my_source_id": {
      "type": "logstash"
    }
  }
}
...this Vector event is produced:
{
  "host": "34.33.222.212",
  "line": "2021-06-14T20:57:14.230Z c082bb583445 hello world",
  "source_type": "logstash"
}

Message from Elastic Beat Heartbeat agent

Given this event...
Heartbeat input config:

```yaml
heartbeat.config.monitors:
	path: ${path.config}/monitors.d/*.yml
	reload.enabled: false
	reload.period: 5s

heartbeat.monitors:
- type: http
	schedule: '@every 5s'
	urls:
	- http://google.com
```

Output if sent to stdout output:

```json
{"@timestamp":"2021-06-14T21:25:37.058Z","@metadata":{"beat":"heartbeat","type":"_doc","version":"7.12.1"},"url":{"full":"http://google.com","scheme":"http","domain":"google.com","port":80},"tcp":{"rtt":{"connect":{"us":18504}}},"event":{"dataset":"uptime"},"ecs":{"version":"1.8.0"},"resolve":{"rtt":{"us":7200},"ip":"172.217.4.174"},"summary":{"up":1,"down":0},"http":{"response":{"mime_type":"text/html; charset=utf-8","headers":{"Content-Length":"219","Date":"Mon, 14 Jun 2021 21:25:37 GMT","Server":"gws","X-Xss-Protection":"0","Location":"http://www.google.com/","Expires":"Wed, 14 Jul 2021 21:25:37 GMT","Content-Type":"text/html; charset=UTF-8","Cache-Control":"public, max-age=2592000","X-Frame-Options":"SAMEORIGIN"},"status_code":301,"body":{"hash":"2178eedd5723a6ac22e94ec59bdcd99229c87f3623753f5e199678242f0e90de","bytes":219}},"rtt":{"response_header":{"us":51481},"validate":{"us":52664},"content":{"us":1182},"total":{"us":71585},"write_request":{"us":134}}},"monitor":{"type":"http","status":"up","duration":{"us":79517},"check_group":"0c8c908a-cd57-11eb-85a4-025000000001","ip":"172.217.4.174","timespan":{"gte":"2021-06-14T21:25:37.137Z","lt":"2021-06-14T21:25:42.137Z"},"id":"auto-http-0X993E1F882355CFD2","name":""},"agent":{"hostname":"docker-desktop","ephemeral_id":"9e15e5bc-86d6-4d47-9067-4262b00c5cce","id":"404c8975-a41b-45bd-8d93-3f6c4449e973","name":"docker-desktop","type":"heartbeat","version":"7.12.1"}}
```
...and this configuration...
sources:
  my_source_id:
    type: logstash

[sources.my_source_id]
type = "logstash"

{
  "sources": {
    "my_source_id": {
      "type": "logstash"
    }
  }
}
...this Vector event is produced:
{
  "@metadata": {
    "beat": "heartbeat",
    "type": "_doc",
    "version": "7.12.1"
  },
  "@timestamp": "2021-06-14T21:25:37.058Z",
  "agent": {
    "ephemeral_id": "9e15e5bc-86d6-4d47-9067-4262b00c5cce",
    "hostname": "docker-desktop",
    "id": "404c8975-a41b-45bd-8d93-3f6c4449e973",
    "name": "docker-desktop",
    "type": "heartbeat",
    "version": "7.12.1"
  },
  "ecs": {
    "version": "1.8.0"
  },
  "event": {
    "dataset": "uptime"
  },
  "host": "34.33.222.212",
  "http": {
    "response": {
      "body": {
        "bytes": 219,
        "hash": "2178eedd5723a6ac22e94ec59bdcd99229c87f3623753f5e199678242f0e90de"
      },
      "headers": {
        "Cache-Control": "public, max-age=2592000",
        "Content-Length": "219",
        "Content-Type": "text/html; charset=UTF-8",
        "Date": "Mon, 14 Jun 2021 21:25:37 GMT",
        "Expires": "Wed, 14 Jul 2021 21:25:37 GMT",
        "Location": "http://www.google.com/",
        "Server": "gws",
        "X-Frame-Options": "SAMEORIGIN",
        "X-Xss-Protection": "0"
      },
      "mime_type": "text/html; charset=utf-8",
      "status_code": 301
    },
    "rtt": {
      "content": {
        "us": 1182
      },
      "response_header": {
        "us": 51481
      },
      "total": {
        "us": 71585
      },
      "validate": {
        "us": 52664
      },
      "write_request": {
        "us": 134
      }
    }
  },
  "monitor": {
    "check_group": "0c8c908a-cd57-11eb-85a4-025000000001",
    "duration": {
      "us": 79517
    },
    "id": "auto-http-0X993E1F882355CFD2",
    "ip": "172.217.4.174",
    "name": "",
    "status": "up",
    "timespan": {
      "gte": "2021-06-14T21:25:37.137Z",
      "lt": "2021-06-14T21:25:42.137Z"
    },
    "type": "http"
  },
  "resolve": {
    "ip": "172.217.4.174",
    "rtt": {
      "us": 7200
    }
  },
  "source_type": "logstash",
  "summary": {
    "down": 0,
    "up": 1
  },
  "tcp": {
    "rtt": {
      "connect": {
        "us": 18504
      }
    }
  },
  "timestamp": "2021-06-14T21:25:37.058Z",
  "url": {
    "domain": "google.com",
    "full": "http://google.com",
    "port": 80,
    "scheme": "http"
  }
}

How it works

Acknowledgement support

Currently, this source will acknowledge events to the sender once the event has been sent to the next component in the topology. In the future, this source will utilize Vector’s support for end-to-end acknowledgements.

Sending data from logstash agents to Vector aggregators

If you are already running an Elastic agent (Logstash or Elastic Beats) in your infrastructure, this source can make it easy to start getting that data into Vector.

Elastic Beats configuration

To configure one of the Elastic Beats agents to forward to a Vector instance, you can use the following output configuration:

	output.logstash:
	  # update these to point to your vector instance
	  hosts: ["127.0.0.1:5044"]

Context

By default, the logstash source augments events with helpful context keys.

Logstash configuration

To configure Logstash to forward to a Vector instance, you can use the following output configuration:

output {
		lumberjack {
				# update these to point to your vector instance
				hosts => ["127.0.0.1"]
				port => 5044
				ssl_certificate => "/path/to/certificate.crt"
		}
}

Note that Logstash requires SSL to be configured.

State

This component is stateless, meaning its behavior is consistent across each input.

Transport Layer Security (TLS)

Vector uses OpenSSL for TLS protocols due to OpenSSL’s maturity. You can enable and adjust TLS behavior via the tls.* options and/or via an OpenSSL configuration file. The file location defaults to /usr/local/ssl/openssl.cnf or can be specified with the OPENSSL_CONF environment variable.
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