Vector As Proxy (or Vector to Vector)

[bogdanml999]

I have the following scenario:

I want to send metrics from clients to Mimir. In between I want to have another vector instance so that the clients send first the metrics to this vector instance (let's call it vector-proxy) and this one forwards the metrics further to Mimir.

From the documentation I realized that the two configurations for vector-client and vector-proxy will have:
vector-client:

• source: metrics
• sink: vector
  vector-proxy:
• source: vector
• sink: Mimir

For that I have speed up a docker compose running two vector containers, mimir and grafana but I couldn't been able to make the vector to vector connection to work. The vector configs tried are:

vector-client.toml:

# Host Metrics
[sources.host_metrics]
type = "host_metrics"
collectors = ["cpu", "memory"]

[sinks.proxy_vector]
type = "vector"
inputs = ["host_metrics"]
address = "http://vector-proxy:9090"

vector-proxy.toml:

[sources.vector_client]
type = "vector"
version = "2"
address = "http://vector-client:9090"
#address = "vector-proxy"

# # Destination
[sinks.mimir]
type = "prometheus_remote_write"
inputs = ["host_metrics"]
endpoint = "http://mimir:9009/api/v1/push"
healthcheck.enabled = false

What am I missing? Can someone provide configuration examples for vector to vector case.