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--- tasks:grafana_agent_setup_for_lab_nodes_monitoring [2026/04/16 12:12] – akraitman
+++ tasks:grafana_agent_setup_for_lab_nodes_monitoring [2026/05/03 14:31] (current) – akraitman
@@ Line 4: / Line 4: @@
 **Grafana Agent Setup for Lab Nodes Monitoring**
-### Overview
+** Overview **
 The grafana_agent Ansible role deploys **Grafana Agent** (static mode) on Lab Nodes to collect system metrics and forward them to a central **Mimir** instance.
@@ Line 10: / Line 10: @@
 This setup replaces or coexists with the previous Prometheus + node_exporter approach, providing a lightweight agent that pushes metrics into Mimir for long-term storage and Grafana dashboards.
-### Architecture & Data Flow
+** Architecture & Data Flow **
@@ Line 32: / Line 32: @@
 . **node_exporter**
    - Installed on every host (prometheus-node-exporter on Debian/Ubuntu, node_exporter on RedHat via EPEL)
-   - Exposes standard host metrics (CPU, memory, disk, network, etc.) on http://localhost:9100/metrics`
+   - Exposes standard host metrics (CPU, memory, disk, network, etc.) on http://localhost:9100/metrics
 . **Grafana Agent**
    - Lightweight Prometheus-compatible agent
-   - Scrapes `node_exporter` locally from localhost:9100
+   - Scrapes node_exporter locally from localhost:9100
    - Relabels the instance using the host’s FQDN
    - Forwards all collected metrics to the central Mimir using the remote_write protocol
@@ Line 44: / Line 44: @@
    - Accepts metrics via the remote_write protocol with basic authentication
-### Configuration Details
+** Configuration Details **
 **Grafana Agent config** (/etc/grafana-agent.yaml on target hosts):
 - Global scrape interval: 60s (configurable via scrape_interval_global)
-- Scrapes the node job from `localhost:9100`
+- Scrapes the node job from localhost:9100
 - Applies relabeling:
-  - instance`: <fqdn>:9100
+  - instance: <fqdn>:9100
-  - nodename`: <fqdn>
+  - nodename: <fqdn>
 - Forwards metrics to Mimir with basic auth credentials stored in the secrets repository(in mimir_password.yml):
-- mimir_username
+** Mimir Endpoints **
-- mimir_password
+  Internal
-- Grafana repository URLs (grafana_apt_repo_key_url, grafana_apt_repo_url, grafana_rpm_repo_url, grafana_rpm_repo_key_url)
-- agent_mimir_url
-### Mimir Endpoint
   https://mimir-jenkins-monitoring.apps.pok.os.sepia.ceph.com/api/v1/push
+  External
+  https://mimir.ceph.com/api/v1/push