From 844c485bba6babc7867855190c25c33b1e5ec78d Mon Sep 17 00:00:00 2001
From: Alexandre Iooss <erdnaxe@crans.org>
Date: Mon, 13 May 2019 12:36:03 +0200
Subject: [PATCH] [prometheus] Install snmp export
---
monitoring.yml | 3 +++
roles/prometheus-node/handlers/main.yml | 5 ++++
roles/prometheus-node/tasks/main.yml | 6 +++++
roles/prometheus/handlers/main.yml | 5 ++++
roles/prometheus/tasks/main.yml | 26 ++++++++++++++++++-
.../templates/prometheus/prometheus.yml.j2 | 15 ++++++++++-
6 files changed, 58 insertions(+), 2 deletions(-)
create mode 100644 roles/prometheus-node/handlers/main.yml
diff --git a/monitoring.yml b/monitoring.yml
index 955294f6..87fcc585 100644
--- a/monitoring.yml
+++ b/monitoring.yml
@@ -27,6 +27,9 @@
job: prometheus
targets:
- localhost:9090
+ prometheus_snmp_targets:
+ - targets:
+ - pulsar.adm.crans.org
roles:
- prometheus
- prometheus-alertmanager
diff --git a/roles/prometheus-node/handlers/main.yml b/roles/prometheus-node/handlers/main.yml
new file mode 100644
index 00000000..b4b64a4b
--- /dev/null
+++ b/roles/prometheus-node/handlers/main.yml
@@ -0,0 +1,5 @@
+---
+- name: Restart prometheus-node-exporter
+ service:
+ name: prometheus-node-exporter
+ state: restarted
diff --git a/roles/prometheus-node/tasks/main.yml b/roles/prometheus-node/tasks/main.yml
index 8a175e98..a41a67f1 100644
--- a/roles/prometheus-node/tasks/main.yml
+++ b/roles/prometheus-node/tasks/main.yml
@@ -7,6 +7,12 @@
retries: 3
until: apt_result is succeeded
+- name: Activate prometheus-node-exporter service
+ systemd:
+ name: prometheus-node-exporter
+ enabled: yes
+ state: started
+
# Doesn't work on Debian Stretch
- name: Make Prometheus node-exporter listen on adm only
when:
diff --git a/roles/prometheus/handlers/main.yml b/roles/prometheus/handlers/main.yml
index 4214def5..670847ba 100644
--- a/roles/prometheus/handlers/main.yml
+++ b/roles/prometheus/handlers/main.yml
@@ -3,3 +3,8 @@
service:
name: prometheus
state: restarted
+
+- name: Restart prometheus-snmp-exporter
+ service:
+ name: prometheus-snmp-exporter
+ state: restarted
diff --git a/roles/prometheus/tasks/main.yml b/roles/prometheus/tasks/main.yml
index 3f705421..5fa2e817 100644
--- a/roles/prometheus/tasks/main.yml
+++ b/roles/prometheus/tasks/main.yml
@@ -2,7 +2,9 @@
- name: Install Prometheus
apt:
update_cache: true
- name: prometheus
+ name:
+ - prometheus
+ - prometheus-snmp-exporter
register: apt_result
retries: 3
until: apt_result is succeeded
@@ -19,8 +21,30 @@
dest: /etc/prometheus/alert.rules.yml
notify: Restart Prometheus
+# Doesn't work on Debian Stretch
+- name: Make Prometheus snmp-exporter listen on adm only
+ when:
+ - ansible_distribution_release == 'buster'
+ lineinfile:
+ path: /etc/default/prometheus-node-exporter
+ regexp: '^ARGS='
+ line: "ARGS=\"--web.listen-address={{ ansible_fqdn }}:9116\""
+ notify: Restart prometheus-snmp-exporter
+
# We don't need to restart Prometheus when updating nodes
- name: Configure Prometheus nodes
copy:
content: "{{ prometheus_targets | to_nice_json }}"
dest: /etc/prometheus/targets.json
+
+# We don't need to restart Prometheus when updating nodes
+- name: Configure Prometheus SNMP devices
+ copy:
+ content: "{{ prometheus_snmp_targets | to_nice_json }}"
+ dest: /etc/prometheus/targets_snmp.json
+
+- name: Activate prometheus service
+ systemd:
+ name: prometheus
+ enabled: yes
+ state: started
diff --git a/roles/prometheus/templates/prometheus/prometheus.yml.j2 b/roles/prometheus/templates/prometheus/prometheus.yml.j2
index 76573fa9..05711426 100644
--- a/roles/prometheus/templates/prometheus/prometheus.yml.j2
+++ b/roles/prometheus/templates/prometheus/prometheus.yml.j2
@@ -29,4 +29,17 @@ scrape_configs:
file_sd_configs:
- files:
- '/etc/prometheus/targets.json'
-
+ - job_name: snmp
+ file_sd_configs:
+ - files:
+ - '/etc/prometheus/targets_snmp.json'
+ metrics_path: /snmp
+ params:
+ module: [if_mib]
+ relabel_configs:
+ - source_labels: [__address__]
+ target_label: __param_target
+ - source_labels: [__param_target]
+ target_label: instance
+ - target_label: __address__
+ replacement: 127.0.0.1:9116
--
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