Socket

Collect logs using the socket client

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

Configuration

Example configurations

{
  "sources": {
    "my_source_id": {
      "type": "socket",
      "address": "0.0.0.0:9000",
      "max_length": 102400,
      "mode": "tcp",
      "path": "/path/to/socket"
    }
  }
}
[sources.my_source_id]
type = "socket"
address = "0.0.0.0:9000"
max_length = 102_400
mode = "tcp"
path = "/path/to/socket"
---
sources:
  my_source_id:
    type: socket
    address: 0.0.0.0:9000
    max_length: 102400
    mode: tcp
    path: /path/to/socket
{
  "sources": {
    "my_source_id": {
      "type": "socket",
      "address": "0.0.0.0:9000",
      "host_key": "host",
      "max_length": 102400,
      "mode": "tcp",
      "path": "/path/to/socket",
      "receive_buffer_bytes": 65536,
      "shutdown_timeout_secs": 30
    }
  }
}
[sources.my_source_id]
type = "socket"
address = "0.0.0.0:9000"
host_key = "host"
max_length = 102_400
mode = "tcp"
path = "/path/to/socket"
receive_buffer_bytes = 65_536
shutdown_timeout_secs = 30
---
sources:
  my_source_id:
    type: socket
    address: 0.0.0.0:9000
    host_key: host
    max_length: 102400
    mode: tcp
    path: /path/to/socket
    framing: null
    receive_buffer_bytes: 65536
    keepalive: null
    tls: null
    shutdown_timeout_secs: 30
    decoding: null

address

required string literal
The address to listen for connections on, or systemd#N to use the Nth socket passed by systemd socket activation. If an address is used it must include a port.
Examples
"0.0.0.0:9000"
"systemd"
"systemd#3"
Relevant when: mode = `tcp` or `udp`

decoding

optional object
Configures in which way frames are decoded into events.

decoding.codec

optional string literal enum
The decoding method.
Enum options
OptionDescription
bytesEvents containing the byte frame as-is.
jsonEvents being parsed from a JSON string.
syslogEvents being parsed from a Syslog message.
default: bytes

framing

optional object
Configures in which way incoming byte sequences are split up into byte frames.
Options for character_delimited framing.
Relevant when: method = `character_delimited`
The character used to separate frames.
Examples
"\n"
"\t"
The maximum frame length limit. Any frames longer than max_length bytes will be discarded entirely.
Examples
65535
102400

framing.method

optional string literal enum
The framing method.
Enum options
OptionDescription
bytesByte frames are passed through as-is according to the underlying I/O boundaries (e.g. split between messages or stream segments).
character_delimitedByte frames which are delimited by a chosen character.
length_delimitedByte frames whose length is encoded in a header.
newline_delimitedByte frames which are delimited by a newline character.
octet_countingByte frames according to the octet counting format.
default: `newline_delimited` for TCP and Unix stream, `bytes` for UDP and Unix datagram
Options for newline_delimited framing.
Relevant when: method = `newline_delimited`
The maximum frame length limit. Any frames longer than max_length bytes will be discarded entirely.
Examples
65535
102400

framing.octet_counting

optional object
Options for octet_counting framing.
Relevant when: method = `octet_counting`
The maximum frame length limit. Any frames longer than max_length bytes will be discarded entirely.
Examples
65535
102400

host_key

optional string literal
The key name added to each event representing the current host. This can also be globally set via the global host_key option.
default: host

keepalive

optional object
Configures the TCP keepalive behavior for the connection to the source.

keepalive.time_secs

optional uint
The time a connection needs to be idle before sending TCP keepalive probes.

max_length

common optional uint
The maximum buffer size of incoming messages. Messages larger than this are truncated.
default: 102400 (bytes)

mode

required string literal enum
The type of socket to use.
Examples
"tcp"
"udp"
"unix_datagram"
"unix_stream"
Enum options string literal
OptionDescription
tcpTCP socket.
udpUDP socket.
unix_datagramUnix domain datagram socket.
unix_streamUnix domain stream socket.

path

required string literal
The unix socket path. This should be an absolute path.
Examples
"/path/to/socket"
Relevant when: mode = `unix_datagram` or `unix_stream`

receive_buffer_bytes

optional uint
Configures the receive buffer size using the SO_RCVBUF option on the socket.
Examples
65536
Relevant when: mode = `tcp` or mode = `udp`

shutdown_timeout_secs

optional uint
The timeout before a connection is forcefully closed during shutdown.
default: 30 (seconds)
Relevant when: mode = `tcp`

tls

optional object
Configures the TLS options for incoming connections.

tls.ca_file

optional string literal
Absolute path to an additional CA certificate file, in DER or PEM format (X.509), or an in-line CA certificate in PEM format.
Examples
"/path/to/certificate_authority.crt"

tls.crt_file

optional string literal
Absolute path to a certificate file used to identify this server, in DER or PEM format (X.509) or PKCS#12, or an in-line certificate in PEM format. If this is set, and is not a PKCS#12 archive, key_file must also be set. This is required if enabled is set to true.
Examples
"/path/to/host_certificate.crt"

tls.enabled

optional bool
Require TLS for incoming connections. If this is set, an identity certificate is also required.
default: false

tls.key_file

optional string literal
Absolute path to a private key file used to identify this server, in DER or PEM format (PKCS#8), or an in-line private key in PEM format.
Examples
"/path/to/host_certificate.key"

tls.key_pass

optional string literal
Pass phrase used to unlock the encrypted key file. This has no effect unless key_file is set.
Examples
"${KEY_PASS_ENV_VAR}"
"PassWord1"
If true, Vector will require a TLS certificate from the connecting host and terminate the connection if the certificate is not valid. If false (the default), Vector will not request a certificate from the client.
default: false

Output

Logs

Line

A single socket event.
Fields
host required string literal
The local hostname, equivalent to the gethostname command.
Examples
my-host.local
message required string literal
The raw line, unparsed.
Examples
2019-02-13T19:48:34+00:00 [info] Started GET "/" for 127.0.0.1
timestamp required timestamp
The exact time the event was ingested into Vector.
Examples
2020-10-10T17:07:36.452332Z

Telemetry

Metrics

link

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 required
The Vector component ID.
component_kind required
The Vector component kind.
component_name required
Deprecated, use component_id instead. The value is the same as component_id.
component_type required
The Vector component type.
container_name optional
The name of the container from which the event originates.
file optional
The file from which the event originates.
host required
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 event originates.
peer_path optional
The pathname from which the event originates.
pid required
The process ID of the Vector instance.
pod_name optional
The name of the pod from which the event originates.
uri optional
The sanitized URI from which the event originates.

component_sent_event_bytes_total

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

component_sent_events_total

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

connection_errors_total

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

connection_established_total

counter
The total number of times a connection has been established.
host required
The hostname of the system Vector is running on.
pid required
The process ID of the Vector instance.

connection_failed_total

counter
The total number of times a connection has failed.
host required
The hostname of the system Vector is running on.
pid required
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 required
The hostname of the system Vector is running on.
pid required
The process ID of the Vector instance.

connection_send_errors_total

counter
The total number of errors sending data via the connection.
host required
The hostname of the system Vector is running on.
pid required
The process ID of the Vector instance.

connection_shutdown_total

counter
The total number of times the connection has been shut down.
host required
The hostname of the system Vector is running on.
pid required
The process ID of the Vector instance.

events_in_total

counter
The number of events accepted by this component either from tagged origins like file and uri, or cumulatively from other origins. This metric is deprecated and will be removed in a future version. Use component_received_events_total instead.
component_id required
The Vector component ID.
component_kind required
The Vector component kind.
component_name required
Deprecated, use component_id instead. The value is the same as component_id.
component_type required
The Vector component type.
container_name optional
The name of the container from which the event originates.
file optional
The file from which the event originates.
host required
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 event originates.
peer_path optional
The pathname from which the event originates.
pid required
The process ID of the Vector instance.
pod_name optional
The name of the pod from which the event originates.
uri optional
The sanitized URI from which the event originates.

events_out_total

counter
The total number of events emitted by this component. This metric is deprecated and will be removed in a future version. Use component_sent_events_total instead.
component_id required
The Vector component ID.
component_kind required
The Vector component kind.
component_name required
Deprecated, use component_id instead. The value is the same as component_id.
component_type required
The Vector component type.
host required
The hostname of the system Vector is running on.
pid required
The process ID of the Vector instance.

Examples

Socket line

Given this event...
2019-02-13T19:48:34+00:00 [info] Started GET "/" for 127.0.0.1
...and this configuration...
[sources.my_source_id]
type = "socket"
---
sources:
  my_source_id:
    type: socket
{
  "sources": {
    "my_source_id": {
      "type": "socket"
    }
  }
}
...this Vector event is produced:
{
  "host": "my-host.local",
  "message": "2019-02-13T19:48:34+00:00 [info] Started GET \"/\" for 127.0.0.1",
  "timestamp": "2020-10-10T17:07:36.452332Z"
}

How it works

Context

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

State

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

Transport Layer Security (TLS)

Vector uses OpenSSL for TLS protocols. You can adjust TLS behavior via the tls.* options.