Caution
Grafana Alloy is the new name for our distribution of the OTel collector. Grafana Agent has been deprecated and is in Long-Term Support (LTS) through October 31, 2025. Grafana Agent will reach an End-of-Life (EOL) on November 1, 2025. Read more about why we recommend migrating to Grafana Alloy.
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.
phlare.write
BETA: This is a beta component. Beta components are subject to breaking changes, and may be replaced with equivalent functionality that cover the same use case.
phlare.write
receives performance profiles from other components and forwards them
to a series of user-supplied endpoints using Phlare’ Push API.
Multiple phlare.write
components can be specified by giving them
different labels.
Usage
phlare.write "LABEL" {
endpoint {
url = PHLARE_URL
...
}
...
}
Arguments
The following arguments are supported:
Name | Type | Description | Default | Required |
---|---|---|---|---|
external_labels | map(string) | Labels to add to profiles sent over the network. | no |
Blocks
The following blocks are supported inside the definition of
phlare.write
:
Hierarchy | Block | Description | Required |
---|---|---|---|
endpoint | endpoint | Location to send profiles to. | no |
endpoint > basic_auth | basic_auth | Configure basic_auth for authenticating to the endpoint. | no |
endpoint > authorization | authorization | Configure generic authorization to the endpoint. | no |
endpoint > oauth2 | oauth2 | Configure OAuth2 for authenticating to the endpoint. | no |
endpoint > oauth2 > tls_config | tls_config | Configure TLS settings for connecting to the endpoint. | no |
endpoint > tls_config | tls_config | Configure TLS settings for connecting to the endpoint. | no |
The >
symbol indicates deeper levels of nesting. For example, endpoint > basic_auth
refers to a basic_auth
block defined inside an
endpoint
block.
endpoint block
The endpoint
block describes a single location to send profiles to. Multiple
endpoint
blocks can be provided to send profiles to multiple locations.
The following arguments are supported:
Name | Type | Description | Default | Required |
---|---|---|---|---|
url | string | Full URL to send metrics to. | yes | |
name | string | Optional name to identify the endpoint in metrics. | no | |
remote_timeout | duration | Timeout for requests made to the URL. | "30s" | no |
headers | map(string) | Extra headers to deliver with the request. | no | |
bearer_token | secret | Bearer token to authenticate with. | no | |
bearer_token_file | string | File containing a bearer token to authenticate with. | no | |
proxy_url | string | HTTP proxy to proxy requests through. | no | |
follow_redirects | bool | Whether redirects returned by the server should be followed. | true | no |
enable_http2 | bool | Whether HTTP2 is supported for requests. | true | no |
At most one of the following can be provided:
When multiple endpoint
blocks are provided, profiles are concurrently forwarded to all
configured locations.
basic_auth block
Name | Type | Description | Default | Required |
---|---|---|---|---|
username | string | Basic auth username. | no | |
password | secret | Basic auth password. | no | |
password_file | string | File containing the basic auth password. | no |
password
and password_file
are mututally exclusive and only one can be
provided inside of a basic_auth
block.
authorization block
Name | Type | Description | Default | Required |
---|---|---|---|---|
type | string | Authorization type, for example, “Bearer”. | no | |
credentials | secret | Secret value. | no | |
credentials_file | string | File containing the secret value. | no |
credential
and credentials_file
are mutually exclusive and only one can be
provided inside of an authorization
block.
oauth2 block
Name | Type | Description | Default | Required |
---|---|---|---|---|
client_id | string | OAuth2 client ID. | no | |
client_secret | secret | OAuth2 client secret. | no | |
client_secret_file | string | File containing the OAuth2 client secret. | no | |
scopes | list(string) | List of scopes to authenticate with. | no | |
token_url | string | URL to fetch the token from. | no | |
endpoint_params | map(string) | Optional parameters to append to the token URL. | no | |
proxy_url | string | Optional proxy URL for OAuth2 requests. | no |
client_secret
and client_secret_file
are mututally exclusive and only one
can be provided inside of an oauth2
block.
The oauth2
block may also contain its own separate tls_config
sub-block.
tls_config block
Name | Type | Description | Default | Required |
---|---|---|---|---|
ca_file | string | CA certificate to validate the server with. | no | |
cert_file | string | Certificate file for client authentication. | no | |
key_file | string | Key file for client authentication. | no | |
server_name | string | ServerName extension to indicate the name of the server. | no | |
insecure_skip_verify | bool | Disables validation of the server certificate. | no | |
min_version | string | Minimum acceptable TLS version. | no |
When min_version
is not provided, the minimum acceptable TLS version is
inherited from Go’s default minimum version, TLS 1.2. If min_version
is
provided, it must be set to one of the following strings:
"TLS10"
(TLS 1.0)"TLS11"
(TLS 1.1)"TLS12"
(TLS 1.2)"TLS13"
(TLS 1.3)
Exported fields
The following fields are exported and can be referenced by other components:
Name | Type | Description |
---|---|---|
receiver | receiver | A value that other components can use to send profiles to. |
Component health
phlare.write
is only reported as unhealthy if given an invalid
configuration. In those cases, exported fields are kept at their last healthy
values.
Debug information
phlare.write
does not expose any component-specific debug
information.
Example
phlare.write "staging" {
// Send metrics to a locally running Phlare instance.
endpoint {
url = "http://phlare:4100"
headers = {
"X-Scope-Org-ID" = "squad-1",
}
}
external_labels = {
"env" = "staging",
}
}
phlare.scrape "default" {
targets = [
{"__address__" = "phlare:4100", "app"="phlare"},
{"__address__" = "agent:12345", "app"="agent"},
]
forward_to = [phlare.write.staging.receiver]
}