ansible-debops-infrastructure

commit 45e51bd13bc3cb9c044dfbebf8094bc745a455e1
parent d9c569da1ae8c905bf0fba8a5b202077b25009fe
Author: Dionysis Grigoropoulos <dgrig@erethon.com>
Date:   Sun,  3 Jun 2018 19:51:06 +0300

monitoring: Init role, only works on linux systemd

Diffstat:
ansible/inventory/group_vars/all/monitoring.yml
 | 
5
+++++
ansible/inventory/host_vars/spinny/monitoring.yml
 | 
3
+++
ansible/roles/monitoring/files/node_exporter.service
 | 
10
++++++++++
ansible/roles/monitoring/tasks/main.yml
 | 
63
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
ansible/roles/monitoring/templates/sysconfig.node_exporter.j2
 | 
1
+

5 files changed, 82 insertions(+), 0 deletions(-)
diff --git a/ansible/inventory/group_vars/all/monitoring.yml b/ansible/inventory/group_vars/all/monitoring.yml
@@ -0,0 +1,5 @@
+---
+
+node_exporter__bundle: https://github.com/prometheus/node_exporter/releases/download/v0.16.0/node_exporter-0.16.0.linux-amd64.tar.gz
+node_exporter__checksum: "sha256:e92a601a5ef4f77cce967266b488a978711dabc527a720bea26505cba426c029"
+node_exporter__listen_address: "{{ ansible_host }}"
diff --git a/ansible/inventory/host_vars/spinny/monitoring.yml b/ansible/inventory/host_vars/spinny/monitoring.yml
@@ -0,0 +1,3 @@
+---
+
+node_exporter__listen_address: "192.168.122.1"
diff --git a/ansible/roles/monitoring/files/node_exporter.service b/ansible/roles/monitoring/files/node_exporter.service
@@ -0,0 +1,10 @@
+[Unit]
+Description=Node Exporter
+
+[Service]
+User=node_exporter
+EnvironmentFile=/etc/default/node_exporter
+ExecStart=/usr/sbin/node_exporter $OPTIONS
+
+[Install]
+WantedBy=multi-user.target
diff --git a/ansible/roles/monitoring/tasks/main.yml b/ansible/roles/monitoring/tasks/main.yml
@@ -0,0 +1,63 @@
+---
+
+- name: Download node_exporter
+  get_url:
+      url: "{{ node_exporter__bundle }}"
+      dest: /tmp/node_exporter.tar.gz
+      checksum: "{{ node_exporter__checksum }}"
+
+- file:
+    path: /tmp/node_exporter/
+    state: directory
+
+- name: Extract node exporter bundle
+  unarchive:
+    src: /tmp/node_exporter.tar.gz
+    dest: /tmp/node_exporter
+    remote_src: yes
+    list_files: yes
+  register: unarchived_files
+
+- name: Copy node_exporter to /usr/sbin/
+  copy:
+    src: "/tmp/node_exporter/{{ unarchived_files.files[0] }}/node_exporter"
+    dest: "/usr/sbin/"
+    remote_src: yes
+    owner: root
+    group: root
+    mode: 0755
+
+- name: Delete /tmp/node_exporter
+  file:
+    path: /tmp/node_exporter
+    state: absent
+
+- name: Create node_exporter system user
+  user:
+    name: node_exporter
+    create_home: no
+    system: yes
+    shell: "/sbin/nologin"
+
+- name: Copy systemd unit file
+  copy:
+    src: node_exporter.service
+    dest: /etc/systemd/system/
+    owner: root
+    group: root
+    mode: 0644
+
+- name: Copy systemd environment file
+  template:
+    src: sysconfig.node_exporter.j2
+    dest: /etc/default/node_exporter
+    owner: root
+    group: root
+    mode: 0644
+
+- name: Enable node_exporter systemd service
+  systemd:
+    name: node_exporter
+    daemon_reload: yes
+    state: restarted
+    enabled: yes
diff --git a/ansible/roles/monitoring/templates/sysconfig.node_exporter.j2 b/ansible/roles/monitoring/templates/sysconfig.node_exporter.j2
@@ -0,0 +1 @@
+OPTIONS="--web.listen-address={{ node_exporter__listen_address }}:9100"