add php exporter

README.md

@@ -13,7 +13,7 @@ Role variables
 --------------
 
 | Variable                                     | Type    | Choices                                                | Default     | Comment         |
-|----------------------------------------------|---------|----------------------------------------------|-------------|-----------------|
+|----------------------------------------------|---------|--------------------------------------------------------|-------------|-----------------|
 | prometheus_server_enable                     | string  | true / false                                           |             |                 |
 | prometheus_server_version                    | string  |                                                        |  latest     |                 |
 | prometheus_server_monitor                    | string  |                                                        |             |                 |
@@ -22,7 +22,7 @@ Role variables
 | prometheus_server_job_name                   | string  |                                                        |  prometheus |                 |
 | prometheus_server_scrape_interval            | string  |                                                        |  5          |                 |
 | prometheus_server_scrape_timeout             | string  |                                                        |  5          |                 |
-| prometheus_exporter_packages                 | list    | node / mysqld / postgresql / mongodb /phpfpm |             |                 |
+| prometheus_exporter_packages                 | list    | node / mysqld / postgresql / mongodb / phpfpm / apache |             |                 |
 | prometheus_node_exporter_targets             | list    |                                                        |             |                 |
 | prometheus_mysqld_exporter_targets           | list    |                                                        |             |                 |
 | prometheus_mongodb_exporter_targets          | list    |                                                        |             |                 |

defaults/main.yml

@@ -1,6 +1,8 @@
 ---
 awh_services_docker_pull: "no"
 
+prometheus_apache_port: 8080
+
 prometheus_exporter_packages: []
 
 prometheus_nodes_ip:

handlers/main.yml

@@ -39,3 +39,10 @@
     state: restarted
     enabled: yes
   tags: ['prometheus']
+
+- name: 'prometheus | apache exporter | restart service'
+  systemd:
+    name: prometheus-apache-exporter.service
+    state: restarted
+    enabled: yes
+  tags: ['prometheus']

tasks/apache_exporter.yml

@@ -0,0 +1,51 @@
+---
+- name: 'prometheus | apache exporter | get latest release from GitHub'
+  shell: curl --silent "https://api.github.com/repos/Lusitaniae/apache_exporter/releases/latest" | jq -r .tag_name | sed "s/v//"
+  args:
+    warn: false
+  register: prometheus_apache_exporter_latest_version
+  run_once: true
+
+- name: 'prometheus | apache exporter | download'
+  get_url:
+    url: https://github.com/Lusitaniae/apache_exporter/releases/download/v{{ prometheus_apache_exporter_version|default(prometheus_apache_exporter_latest_version.stdout) }}/apache_exporter-{{ prometheus_apache_exporter_version|default(prometheus_apache_exporter_latest_version.stdout) }}.linux-amd64.tar.gz
+    dest: /tmp
+
+- name: 'prometheus | apache exporter | unarchive'
+  unarchive:
+    remote_src: yes
+    src: /tmp/apache_exporter-{{ prometheus_apache_exporter_version|default(prometheus_apache_exporter_latest_version.stdout) }}.linux-amd64.tar.gz
+    dest: /tmp
+
+- name: 'prometheus | apache exporter | move to /usr/local/bin'
+  copy:
+    src: /tmp/apache_exporter-{{ prometheus_apache_exporter_version|default(prometheus_apache_exporter_latest_version.stdout) }}.linux-amd64/apache_exporter
+    dest: /usr/local/bin/prometheus-apache-exporter
+    remote_src: yes
+    owner: root
+    group: root
+    mode: 0755
+  notify:
+    - 'prometheus | apache exporter | restart service'
+
+- name: 'prometheus | apache exporter | install startup script'
+  template:
+    src: scripts/prometheus-apache-exporter-script.sh.j2
+    dest: /usr/local/bin/prometheus-apache-exporter-script.sh
+    owner: root
+    group: root
+    mode: 0600
+
+- name: 'prometheus | apache exporter | install unit file to systemd'
+  template:
+    src: systemd/prometheus-apache-exporter.service.j2
+    dest: /etc/systemd/system/prometheus-apache-exporter.service
+    owner: root
+    group: root
+    mode: 0600
+
+- name: 'prometheus | apache exporter | configure systemd to use service'
+  systemd:
+    daemon_reload: yes
+    enabled: yes
+    name: prometheus-apache-exporter.service

tasks/main.yml

@@ -34,3 +34,8 @@
   include_tasks: 'phpfpm_exporter.yml'
   when:
     - "'phpfpm' in prometheus_exporter_packages"
+
+- name: 'prometheus | Apache exporter'
+  include_tasks: 'apache_exporter.yml'
+  when:
+    - "'apache' in prometheus_exporter_packages"

templates/systemd/prometheus-apache-exporter.service.j2

@@ -0,0 +1,10 @@
+[Unit]
+Description=Prometheus Apache Exporter
+After=network.target
+
+[Service]
+Type=simple
+ExecStart=/usr/local/bin/prometheus-apache-exporter --scrape_uri="http://localhost:{{ prometheus_apache_port }}/server-status/?auto"
+
+[Install]
+WantedBy=multi-user.target