how to pass custom variables

[uglyliu]

I set an environment variable pod_ip on the vector agent server，I want to pass the pod_ip field to the vector server ，the vector agent client configuration is as follows

data_dir = "/data/svr/vector/data"
timezone = "local"

[api]
enabled = false
address = "[::]:8686"
playground = false

[sources.file1]
include = [ "/data/log/**/*.log" ]
type = "file"
ignore_checkpoints = true
read_from = "end"

  [sources.file1.fingerprint]
  strategy = "device_and_inode"


[sources.internal_metrics]
type = "internal_metrics"

[sinks.prom_exporter]
type = "prometheus_exporter"
inputs = [ "internal_metrics" ]
address = "[::]:9092"

[sinks.vector1]
type = "vector"
inputs = [ "file1" ]
address = "10.165.1.24:8688"
version = "2"

The results I printed on the server side are as follows

{"file":"/data/log/user-center/user-center-20240313.log","host":"ip-10-65-1-163.ap-northeast-1.compute.internal","message":"2024-03-13 info test102","source_type":"file","timestamp":"2024-03-13T00:44:22.448217020Z"}

How to achieve the following effect

{"file":"/data/log/user-center/user-center-20240313.log","host":"ip-10-65-1-163.ap-northeast-1.compute.internal","message":"2024-03-13 info test102","source_type":"file","timestamp":"2024-03-13T00:44:22.448217020Z","pod_ip":"192.168.1.1"}

[jszwedko]

Hi @uglyliu !

You can template in environment variable configuration like this: https://vector.dev/docs/reference/configuration/#environment-variables

[uglyliu]

Already solved, thank you, similar configuration is as follows

[transforms.add_host]
inputs = ["file1"]
type = "remap"
source = """
.pod_ip = "${POD_IP}"
.host_ip = "${HOST_IP}"

"""

Configure the environment in /etc/profile on the server

export POD_IP=192.168.1.1
export HOST_IP=122.168.1.1