Important: This documentation is about an older version. It's relevant only to the release noted, many of the features and functions have been updated or replaced. Please view the current version.
otelcol.receiver.jaeger
otelcol.receiver.jaeger accepts Jaeger-formatted data over the network and forwards it to other otelcol.* components.
Note
otelcol.receiver.jaegeris a wrapper over the upstream OpenTelemetry Collectorjaegerreceiver. Bug reports or feature requests will be redirected to the upstream repository, if necessary.
You can specify multiple otelcol.receiver.jaeger components by giving them different labels.
Usage
otelcol.receiver.jaeger "LABEL" {
protocols {
grpc {}
thrift_http {}
thrift_binary {}
thrift_compact {}
}
output {
metrics = [...]
logs = [...]
traces = [...]
}
}Arguments
otelcol.receiver.jaeger doesn’t support any arguments and is configured fully through inner blocks.
Blocks
The following blocks are supported inside the definition of
otelcol.receiver.jaeger:
| Hierarchy | Block | Description | Required |
|---|---|---|---|
| protocols | protocols | Configures the protocols the component can accept traffic over. | yes |
| protocols > grpc | grpc | Configures a Jaeger gRPC server to receive traces. | no |
| protocols > grpc > tls | tls | Configures TLS for the gRPC server. | no |
| protocols > grpc > keepalive | keepalive | Configures keepalive settings for the configured server. | no |
| protocols > grpc > keepalive > server_parameters | server_parameters | Server parameters used to configure keepalive settings. | no |
| protocols > grpc > keepalive > enforcement_policy | enforcement_policy | Enforcement policy for keepalive settings. | no |
| protocols > thrift_http | thrift_http | Configures a Thrift HTTP server to receive traces. | no |
| protocols > thrift_http > tls | tls | Configures TLS for the Thrift HTTP server. | no |
| protocols > thrift_http > cors | cors | Configures CORS for the Thrift HTTP server. | no |
| protocols > thrift_binary | thrift_binary | Configures a Thrift binary UDP server to receive traces. | no |
| protocols > thrift_compact | thrift_compact | Configures a Thrift compact UDP server to receive traces. | no |
| debug_metrics | debug_metrics | Configures the metrics that this component generates to monitor its state. | no |
| output | output | Configures where to send received telemetry data. | yes |
The > symbol indicates deeper levels of nesting.
For example, protocols > grpc refers to a grpc block defined inside a protocols block.
protocols block
The protocols block defines a set of protocols used to accept traces over the network.
protocols doesn’t support any arguments and is configured fully through inner blocks.
otelcol.receiver.jeager requires at least one protocol block (grpc, thrift_http, thrift_binary, or thrift_compact).
grpc block
The grpc block configures a gRPC server which can accept Jaeger traces.
If the grpc block isn’t provided, a gRPC server isn’t started.
The following arguments are supported:
| Name | Type | Description | Default | Required |
|---|---|---|---|---|
endpoint | string | host:port to listen for traffic on. | "0.0.0.0:14250" | no |
transport | string | Transport to use for the gRPC server. | "tcp" | no |
max_recv_msg_size | string | Maximum size of messages the server will accept. | "4MiB" | no |
max_concurrent_streams | number | Limit the number of concurrent streaming RPC calls. | no | |
read_buffer_size | string | Size of the read buffer the gRPC server will use for reading from clients. | "512KiB" | no |
write_buffer_size | string | Size of the write buffer the gRPC server will use for writing to clients. | no | |
include_metadata | boolean | Propagate incoming connection metadata to downstream consumers. | no |
tls block
The tls block configures TLS settings used for a server.
If the tls block isn’t provided, TLS isn’t used for connections to the server.
The following arguments are supported:
| Name | Type | Description | Default | Required |
|---|---|---|---|---|
ca_file | string | Path to the CA file. | no | |
ca_pem | string | CA PEM-encoded text to validate the server with. | no | |
cert_file | string | Path to the TLS certificate. | no | |
cert_pem | string | Certificate PEM-encoded text for client authentication. | no | |
include_system_ca_certs_pool | boolean | Whether to load the system certificate authorities pool alongside the certificate authority. | false | no |
key_file | string | Path to the TLS certificate key. | no | |
key_pem | secret | Key PEM-encoded text for client authentication. | no | |
max_version | string | Maximum acceptable TLS version for connections. | "TLS 1.3" | no |
min_version | string | Minimum acceptable TLS version for connections. | "TLS 1.2" | no |
cipher_suites | list(string) | A list of TLS cipher suites that the TLS transport can use. | [] | no |
reload_interval | duration | The duration after which the certificate is reloaded. | "0s" | no |
client_ca_file | string | Path to the TLS cert to use by the server to verify a client certificate. | no |
If reload_interval is set to "0s", the certificate never reloaded.
The following pairs of arguments are mutually exclusive and can’t both be set simultaneously:
ca_pemandca_filecert_pemandcert_filekey_pemandkey_file
If cipher_suites is left blank, a safe default list is used.
Refer to the Go Cipher Suites documentation for a list of supported cipher suites.
client_ca_file sets the ClientCA and ClientAuth to RequireAndVerifyClientCert in the TLSConfig.
Refer to the Go TLS documentation for more information.
keepalive block
The keepalive block configures keepalive settings for connections to a gRPC server.
keepalive doesn’t support any arguments and is configured fully through inner blocks.
server_parameters block
The server_parameters block controls keepalive and maximum age settings for gRPC servers.
The following arguments are supported:
| Name | Type | Description | Default | Required |
|---|---|---|---|---|
max_connection_idle | duration | Maximum age for idle connections. | "infinity" | no |
max_connection_age | duration | Maximum age for non-idle connections. | "infinity" | no |
max_connection_age_grace | duration | Time to wait before forcibly closing connections. | "infinity" | no |
time | duration | How often to ping inactive clients to check for liveness. | "2h" | no |
timeout | duration | Time to wait before closing inactive clients that don’t respond to liveness checks. | "20s" | no |
enforcement_policy block
The enforcement_policy block configures the keepalive enforcement policy for gRPC servers.
The server closes connections from clients that violate the configured policy.
The following arguments are supported:
| Name | Type | Description | Default | Required |
|---|---|---|---|---|
min_time | duration | Minimum time clients should wait before sending a keepalive ping. | "5m" | no |
permit_without_stream | boolean | Allow clients to send keepalive pings when there are no active streams. | false | no |
thrift_http block
The thrift_http block configures an HTTP server which can accept Thrift-formatted traces.
If the thrift_http block isn’t specified, an HTTP server isn’t started.
The following arguments are supported:
| Name | Type | Description | Default | Required |
|---|---|---|---|---|
endpoint | string | host:port to listen for traffic on. | "0.0.0.0:14268" | no |
max_request_body_size | string | Maximum request body size the server will allow. | 20MiB | no |
include_metadata | boolean | Propagate incoming connection metadata to downstream consumers. | no | |
compression_algorithms | list(string) | A list of compression algorithms the server can accept. | ["", "gzip", "zstd", "zlib", "snappy", "deflate"] | no |
cors block
The cors block configures CORS settings for an HTTP server.
The following arguments are supported:
| Name | Type | Description | Default | Required |
|---|---|---|---|---|
allowed_origins | list(string) | Allowed values for the Origin header. | no | |
allowed_headers | list(string) | Accepted headers from CORS requests. | ["X-Requested-With"] | no |
max_age | number | Configures the Access-Control-Max-Age response header. | no |
The allowed_headers specifies which headers are acceptable from a CORS request.
The following headers are always implicitly allowed:
AcceptAccept-LanguageContent-TypeContent-Language
If allowed_headers includes "*", all headers are permitted.
thrift_binary block
The thrift_binary block configures a UDP server which can accept traces formatted to the Thrift binary protocol.
If the thrift_binary block isn’t provided, a UDP server isn’t started.
The following arguments are supported:
| Name | Type | Description | Default | Required |
|---|---|---|---|---|
endpoint | string | host:port to listen for traffic on. | "0.0.0.0:6832" | no |
queue_size | number | Maximum number of UDP messages that can be queued at once. | 1000 | no |
max_packet_size | string | Maximum UDP message size. | "65KiB" | no |
workers | number | Number of workers to concurrently read from the message queue. | 10 | no |
socket_buffer_size | string | Buffer to allocate for the UDP socket. | no |
thrift_compact block
The thrift_compact block configures a UDP server which can accept traces formatted to the Thrift compact protocol.
If the thrift_compact block isn’t provided, a UDP server isn’t started.
The following arguments are supported:
| Name | Type | Description | Default | Required |
|---|---|---|---|---|
endpoint | string | host:port to listen for traffic on. | "0.0.0.0:6831" | no |
queue_size | number | Maximum number of UDP messages that can be queued at once. | 1000 | no |
max_packet_size | string | Maximum UDP message size. | "65KiB" | no |
workers | number | Number of workers to concurrently read from the message queue. | 10 | no |
socket_buffer_size | string | Buffer to allocate for the UDP socket. | no |
debug_metrics block
The debug_metrics block configures the metrics that this component generates to monitor its state.
The following arguments are supported:
| Name | Type | Description | Default | Required |
|---|---|---|---|---|
disable_high_cardinality_metrics | boolean | Whether to disable certain high cardinality metrics. | true | no |
level | string | Controls the level of detail for metrics emitted by the wrapped collector. | "detailed" | no |
disable_high_cardinality_metrics is the Grafana Alloy equivalent to the telemetry.disableHighCardinalityMetrics feature gate in the OpenTelemetry Collector.
It removes attributes that could cause high cardinality metrics.
For example, attributes with IP addresses and port numbers in metrics about HTTP and gRPC connections are removed.
Note
If configured,
disable_high_cardinality_metricsonly applies tootelcol.exporter.*andotelcol.receiver.*components.
level is the Alloy equivalent to the telemetry.metrics.level feature gate in the OpenTelemetry Collector.
Possible values are "none", "basic", "normal" and "detailed".
output block
The output block configures a set of components to forward resulting telemetry data to.
The following arguments are supported:
| Name | Type | Description | Default | Required |
|---|---|---|---|---|
logs | list(otelcol.Consumer) | List of consumers to send logs to. | [] | no |
metrics | list(otelcol.Consumer) | List of consumers to send metrics to. | [] | no |
traces | list(otelcol.Consumer) | List of consumers to send traces to. | [] | no |
You must specify the output block, but all its arguments are optional.
By default, telemetry data is dropped.
Configure the metrics, logs, and traces arguments accordingly to send telemetry data to other components.
Exported fields
otelcol.receiver.jaeger doesn’t export any fields.
Component health
otelcol.receiver.jaeger is only reported as unhealthy if given an invalid configuration.
Debug information
otelcol.receiver.jaeger doesn’t expose any component-specific debug information.
Example
This example creates a pipeline which accepts Jaeger-formatted traces and writes them to an OTLP server:
otelcol.receiver.jaeger "default" {
protocols {
grpc {}
thrift_http {}
thrift_binary {}
thrift_compact {}
}
output {
traces = [otelcol.processor.batch.default.input]
}
}
otelcol.processor.batch "default" {
output {
traces = [otelcol.exporter.otlp.default.input]
}
}
otelcol.exporter.otlp "default" {
client {
endpoint = "my-otlp-server:4317"
}
}Technical details
otelcol.receiver.jaeger supports Gzip for compression.
Compatible components
otelcol.receiver.jaeger can accept arguments from the following components:
- Components that export OpenTelemetry
otelcol.Consumer
Note
Connecting some components may not be sensible or components may require further configuration to make the connection work correctly. Refer to the linked documentation for more details.



