---
title: Install Prometheus for Gitlab
url: https://devopstales.github.io/monitoring/install-prometheus-for-gitlab/
date: 2019-06-10
keywords: prometheus, gitlab, nosql
---


Prometheus is an open-source monitoring system with a built-in noSQL time-series database. It offers a multi-dimensional data model, a flexible query language, and diverse visualization possibilities. Prometheus collects metrics from http nedpoint. Most service dind’t have this endpoint so you need optional programs that generate additional metrics cald exporters.

&lt;!--more--&gt;


### Install prometheus from package
```
curl -s https://packagecloud.io/install/repositories/prometheus-rpm/release/script.rpm.sh | sudo bash

yum install prometheus2 alertmanager -y
```

### Configurate Prometheus
```
nano /etc/prometheus/promethsu.yml
---
global:
  scrape_interval: 15s
  scrape_timeout: 15s
  evaluation_interval: 15s

alerting:
  alertmanagers:
  - static_configs:
    - targets:
       - localhost:9095

rule_files:
  - &#34;/etc/prometheus/alert.rules&#34;

scrape_configs:
- job_name: prometheus
  static_configs:
  - targets:
    - localhost:9090
- job_name: redis
  static_configs:
  - targets:
    - localhost:9121
- job_name: postgres
  static_configs:
  - targets:
    - localhost:9187
- job_name: node
  static_configs:
  - targets:
    - localhost:9100
- job_name: gitlab-workhorse
  static_configs:
  - targets:
    - localhost:9229
- job_name: gitlab-unicorn
  metrics_path: &#34;/-/metrics&#34;
  static_configs:
  - targets:
    - 127.0.0.1:8080
- job_name: gitlab-sidekiq
  static_configs:
  - targets:
    - 127.0.0.1:8082
- job_name: gitlab_monitor_database
  metrics_path: &#34;/database&#34;
  static_configs:
  - targets:
    - localhost:9168
- job_name: gitlab_monitor_sidekiq
  metrics_path: &#34;/sidekiq&#34;
  static_configs:
  - targets:
    - localhost:9168
- job_name: gitlab_monitor_process
  metrics_path: &#34;/process&#34;
  static_configs:
  - targets:
    - localhost:9168
- job_name: gitaly
  static_configs:
  - targets:
    - localhost:9236
- job_name: nginx
  static_configs:
  - targets:
    - localhost:9913
- job_name: &#39;playframework-app&#39;
  scrape_interval: 5s
  metrics_path: &#39;/metrics&#39;
  static_configs:
  - targets: [&#39;localhost:9000&#39;]
```

```
nano /etc/prometheus/alert.rules
groups:
- name: host
  rules:
  - alert: low_connected_users
    expr: play_current_users &lt; 2
    for: 30s
    labels:
      severity: slack
    annotations:
      summary: &#34;Instance {{ $labels.instance }} under lower load&#34;
      description: &#34;{{ $labels.instance }} of job {{ $labels.job }} is under lower load.&#34;
```

![Example image](/img/include/mattermost_gitlab4.webp)&lt;br&gt;&lt;br&gt;
![Example image](/img/include/mattermost_gitlab5.webp)&lt;br&gt;&lt;br&gt;
![Example image](/img/include/mattermost_gitlab6.webp)&lt;br&gt;&lt;br&gt;
![Example image](/img/include/mattermost_gitlab7.webp)&lt;br&gt;&lt;br&gt;
![Example image](/img/include/mattermost_gitlab8.webp)&lt;br&gt;&lt;br&gt;

```
nano /etc/prometheus/alertmanager.yml
global:

templates:
- &#39;/etc/prometheus/template/*.tmpl&#39;

route:
 group_by: [alertname, job]
 # If an alert isn&#39;t caught by a route, send it to slack.
 receiver: slack_general
 routes:
  - match:
      severity: slack
    receiver: slack_general

receivers:
- name: slack_general
  slack_configs:
  - api_url: http://mattermost.devopstales.intra/hooks/9g4qwgpkzi898jzzeszzzzutmc
    channel: &#39;monitoring&#39;
    username: &#34;prometheus&#34; #name ins mattermost
    text: &#34;&#34;
    send_resolved: true
```

```
mkdir /etc/prometheus/template/
nano /etc/prometheus/template/alertmessage.tmpl
{{ define &#34;__slack_text&#34; }}
{{ range .Alerts }}{{ .Annotations.description}}{{ end }}
{{ end }}

{{ define &#34;__slack_title&#34; }}
{{ range .Alerts }} :scream: {{ .Annotations.summary}} :scream: {{ end }}
{{ end }}

{{ define &#34;slack.default.text&#34; }}{{ template &#34;__slack_text&#34; . }}{{ end }}
{{ define &#34;slack.default.title&#34; }}{{ template &#34;__slack_title&#34; . }}{{ end }}
```

### Configurate Gitlab

![Example image](/img/include/mattermost_gitlab1.webp)&lt;br&gt;&lt;br&gt;
![Example image](/img/include/mattermost_gitlab2.webp)&lt;br&gt;&lt;br&gt;
![Example image](/img/include/mattermost_gitlab3.webp)&lt;br&gt;&lt;br&gt;

```
nano /etc/gitlab/gitlab.rb
alertmanager[&#39;enable&#39;] = false
prometheus[&#39;enable&#39;] = false
node_exporter[&#39;enable&#39;] = true
redis_exporter[&#39;enable&#39;] = true
postgres_exporter[&#39;enable&#39;] = true
gitlab_monitor[&#39;enable&#39;] = true

gitlab-ctl reconfigure

systemctl start alertmanager.service
systemctl status alertmanager.service
systemctl start prometheus.service
systemctl status prometheus.service
```