Movses AslanyanandClaude Opus 5.5
2c18962243
Without an explicit service_name, Loki derived it from the container
label (ledgerline-sanctions-1), while spans carry service.name
"sanctions". Grafana's Tempo->Loki link selects on
{service_name="<service.name>"}, so it matched no stream. The czy agent
now sets service_name from com.docker.compose.service; `container` is
unchanged. CLAUDE.md's description of the labels is updated to match.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
57 lines
1.8 KiB
Plaintext
57 lines
1.8 KiB
Plaintext
// Alloy log agent on czy, where Ledgerline's containers run.
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//
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// This is the Docker half of the platform's Alloy config
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// (ansible/roles/observability/templates/grafana-stack/config/alloy/config.alloy.j2),
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// moved here because the platform itself now runs on k3s (k8s/), where there is
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// no Docker socket. Components are unchanged except loki.write, which pushes
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// to the cluster's Loki over HTTPS with basic auth instead of http://loki:3100,
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// and one extra relabel rule that sets service_name (see below).
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//
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// OTLP is NOT received here: apps send spans to the platform's Alloy at
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// https://otlp.vione.cloud (k8s/alloy/config.alloy).
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logging {
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level = "info"
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}
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discovery.docker "local" {
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host = "unix:///var/run/docker.sock"
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}
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discovery.relabel "docker" {
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targets = discovery.docker.local.targets
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rule {
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source_labels = ["__meta_docker_container_name"]
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regex = "/(.*)"
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target_label = "container"
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}
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// Not in the Ansible config. Without it Loki derives service_name from
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// `container` (ledgerline-sanctions-1), while spans carry service.name
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// "sanctions" -- and Grafana's Tempo->Loki link selects on
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// {service_name="<service.name>"}, so it matched no stream. The Compose
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// service name is the services/ directory name, i.e. the OTel service.name.
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rule {
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source_labels = ["__meta_docker_container_label_com_docker_compose_service"]
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target_label = "service_name"
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}
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}
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loki.source.docker "local" {
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host = "unix:///var/run/docker.sock"
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targets = discovery.relabel.docker.output
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forward_to = [loki.write.default.receiver]
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}
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loki.write "default" {
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endpoint {
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url = sys.env("LOKI_PUSH_URL")
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basic_auth {
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username = sys.env("LOKI_PUSH_USER")
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password = sys.env("LOKI_PUSH_PASSWORD")
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}
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}
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}
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