Alloy not working for docker logs on VMs

Grafana Alloy
, ,
1

I’m trying to send docker logs using Alloy from remote VM to another VM where loki is running. Does alloy work with loki at all? I do not see any examples for it in repo or documentation

I tried to find examples but not finding any!

Here is the simple config i’m using

logging {
    level = "debug"
    format = "logfmt"
}

// Discover Docker containers
discovery.docker "containers" {
    host = "unix:///var/run/docker.sock"
}

// Simple Docker log collection and forwarding
loki.source.docker "docker_logs" {
    host       = "unix:///var/run/docker.sock"
    targets    = discovery.docker.containers.targets
    forward_to = [loki.write.local_loki.receiver]
}

// Write to local Loki instance
loki.write "local_loki" {
    endpoint {
        url = "https://vm.com/loki/api/v1/push"
    }

    external_labels = {
        hostname = "{{ ansible_hostname }}",
        source = "alloy",
    }
}

I’m getting following error

ts=2025-10-20T15:12:23.551413876Z level=warn msg="error sending batch, will retry" component_path=/ component_id=loki.write.local_loki component=client host=vm.com:3100 status=-1 tenant="" error="Post \"https://vm.com:3100/loki/api/v1/push\": context deadline exceeded"

Please help!

2

I would check and make sure your loki cluster is working and it’s accessible from the URL you specified in the configuration.

1 Like
3

Fell into the trap of “it was working yesterday”. Thanks for the quick hint