grafana-agent: add grafana-agent-flow config

grafana · Apr 11, 2024 · d4d2dd5 · d4d2dd5
1 parent db3417a
commit d4d2dd5
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Showing 5 changed files with 53 additions and 2 deletions.
diff --git a/roles/grafana_agent/defaults/main.yml b/roles/grafana_agent/defaults/main.yml
@@ -45,3 +45,28 @@ grafana_agent_static_config:
       disable_collectors:
         - "mdadm"
 
+grafana_agent_flow_config: |
+  logging {
+      level = "warn"
+  }
+
+  prometheus.exporter.unix "default" {
+      include_exporter_metrics = true
+      disable_collectors       = ["mdadm"]
+  }
+
+  prometheus.scrape "default" {
+      targets = concat(
+        prometheus.exporter.unix.default.targets,
+        [{
+          // Self-collect metrics
+          job         = "agent",
+          __address__ = "127.0.0.1:12345",
+        }],
+      )
+
+      forward_to = [
+      // TODO: components to forward metrics to (like prometheus.remote_write or
+      // prometheus.relabel).
+      ]
+  }
diff --git a/roles/grafana_agent/handlers/main.yml b/roles/grafana_agent/handlers/main.yml
@@ -2,12 +2,18 @@
 - name: Restart Grafana Agent with daemon reload
   become: true
   ansible.builtin.systemd:
-    name: grafana-agent
+    name: grafana-agent{% if grafana_agent_mode == 'flow' %}-flow{% endif %}
     state: restarted
     daemon_reload: true
 
 - name: Restart Grafana Agent
   become: true
   ansible.builtin.systemd:
-    name: grafana-agent
+    name: grafana-agent{% if grafana_agent_mode == 'flow' %}-flow{% endif %}
     state: restarted
+
+- name: Reload Grafana Agent
+  become: true
+  ansible.builtin.systemd:
+    name: grafana-agent{% if grafana_agent_mode == 'flow' %}-flow{% endif %}
+    state: reloaded
diff --git a/roles/grafana_agent/tasks/configure.yml b/roles/grafana_agent/tasks/configure.yml
@@ -8,3 +8,13 @@
     group: "{{ grafana_agent_user_group }}"
     mode: "0640"
   notify: Restart Grafana Agent
+
+- name: Create Grafana Agent config - flow
+  when: grafana_agent_mode == 'flow'
+  ansible.builtin.template:
+    src: grafana-agent-flow.river.j2
+    dest: /etc/grafana-agent-flow.river
+    owner: root
+    group: "{{ grafana_agent_user_group }}"
+    mode: "0640"
+  notify: Reload Grafana Agent
diff --git a/roles/grafana_agent/tasks/main.yml b/roles/grafana_agent/tasks/main.yml
@@ -23,8 +23,15 @@
       tags:
         - grafana_agent_configure
 
+- name: Flush handlers
+  ansible.builtin.meta: flush_handlers
+
 - name: Start and enable Grafana Agent
+  become: true
   ansible.builtin.service:
     name: grafana-agent{% if grafana_agent_mode == 'flow' %}-flow{% endif %}
     state: started
     enabled: true
+  tags:
+    - grafana_agent_install
+    - grafana_agent_configure
diff --git a/roles/grafana_agent/templates/grafana-agent-flow.river.j2 b/roles/grafana_agent/templates/grafana-agent-flow.river.j2
@@ -0,0 +1,3 @@
+{{ ansible_managed | comment('c') }}
+// For a full configuration reference, see https://grafana.com/docs/agent/latest/flow/
+{{ grafana_agent_flow_config }}