update glusterfs role to include deployment of gluster_exporter for prometheus

roles/glusterfs/tasks/main.yml

@@ -13,59 +13,8 @@
     - xfsprogs
     - xfsdump
 
+- include: manage_volumes.yml
 
-# create mount points
+- include: prometheus_exporter.yml
-- name: create mount points for all bricks in all volumes
-  file:
-    path: "{{ item }}"
-    state: directory
-    mode: 0755
-  with_items: "{{mountpoints}}"
-
-# manage volumes
-#- name: remove old gluster volumes
-#  gluster_volume:
-#    state: absent
-#    name: "{{ item.key }}"
-#    rebalance: no
-#    replicas: false
-#    cluster: "{{cluster}}"
-#  with_dict: "{{removed_volumes}}"
-#  run_once: true
 
 
-- name: create gluster volumes
-  gluster_volume:
-    state: present
-    start_on_create: yes
-    name: "{{ item.key }}"
-    brick: '{{ item.value | join(",")}}'
-    rebalance: no
-    replicas: 2
-    force: true
-    cluster: "{{cluster}}"
-  with_dict: "{{volumes}}"
-  run_once: true
-
-#- name: create tmp gluster volumes
-#  gluster_volume:
-#    state: present
-#    name: "tmp"
-#    brick: '/data/glusterfs/tmp/brick1/brick'
-#    rebalance: no
-#    replicas: 1
-#    cluster: "{{cluster}}"
-#  run_once: true
-
-- name: create distributed gluster volumes
-  gluster_volume:
-    state: present
-    name: "{{ item.key }}"
-    brick: '{{ item.value | join(",")}}'
-    rebalance: no
-    replicas: false
-    force: true
-    cluster: "{{cluster}}"
-  with_dict: "{{distributed_volumes}}"
-  run_once: true
-

roles/glusterfs/tasks/manage_volumes.yml

@@ -0,0 +1,57 @@
+---
+# glusterfs mounts
+
+# create mount points
+- name: create mount points for all bricks in all volumes
+  file:
+    path: "{{ item }}"
+    state: directory
+    mode: 0755
+  with_items: "{{mountpoints}}"
+
+# manage volumes
+#- name: remove old gluster volumes
+#  gluster_volume:
+#    state: absent
+#    name: "{{ item.key }}"
+#    rebalance: no
+#    replicas: false
+#    cluster: "{{cluster}}"
+#  with_dict: "{{removed_volumes}}"
+#  run_once: true
+
+
+- name: create gluster volumes
+  gluster_volume:
+    state: present
+    start_on_create: yes
+    name: "{{ item.key }}"
+    brick: '{{ item.value | join(",")}}'
+    rebalance: no
+    replicas: 2
+    force: true
+    cluster: "{{cluster}}"
+  with_dict: "{{volumes}}"
+  run_once: true
+
+#- name: create tmp gluster volumes
+#  gluster_volume:
+#    state: present
+#    name: "tmp"
+#    brick: '/data/glusterfs/tmp/brick1/brick'
+#    rebalance: no
+#    replicas: 1
+#    cluster: "{{cluster}}"
+#  run_once: true
+
+- name: create distributed gluster volumes
+  gluster_volume:
+    state: present
+    name: "{{ item.key }}"
+    brick: '{{ item.value | join(",")}}'
+    rebalance: no
+    replicas: false
+    force: true
+    cluster: "{{cluster}}"
+  with_dict: "{{distributed_volumes}}"
+  run_once: true

roles/glusterfs/tasks/prometheus_exporter.yml

@@ -0,0 +1,31 @@
+---
+# tasks to install prometheus gluster_exporter
+# https://github.com/ofesseler/gluster_exporter
+
+# install packages
+- name: Update apt cache.
+  apt: update_cache=yes cache_valid_time=86400
+
+- name: Install gluster_exporter dependencies.
+  apt: "name={{ item }} state=installed"
+  with_items:
+    - golang-go
+
+- name: make golang workspace
+  file:
+    path: /opt/golang
+    state: directory
+    mode: 0775
+
+- name: install gluster_exporter
+  shell: GOPATH=/opt/golang go get github.com/ofesseler/gluster_exporter
+
+- name: add gluster_exporter to startup
+  lineinfile:
+    dest: /etc/rc.local
+    regexp: '/opt/golang/bin/gluster_exporter'
+    line: 'nohup /opt/golang/bin/gluster_exporter --profile &'
+    insertbefore: "^exit 0"
+
+- name: start gluster_exporter
+  shell: nohup /opt/golang/bin/gluster_exporter --profile &