WIP: Implement OSD sections

Still WIP, @mwheckmann free to test
As requested by #162

Current known issue, since ceph.conf gets modified during every single
run (at the end during the merge) so this will restart ceph daemons.

Signed-off-by: Sébastien Han <sebastien.han@enovance.com>

group_vars/osds

@@ -5,8 +5,27 @@
 # Dummy variable to avoid error because ansible does not recognize the file as a good configuration file when no variable in it.
 dummy:
 
-## Ceph options
+####################
+# OSD CRUSH LOCATION
+####################
+
+# The following options will build a ceph.conf with OSD sections
+# Example:
+# [osd.X]
+# osd crush location = "root=location"
 #
+# This works with your inventory file
+# To match the following 'osd_crush_location' option the inventory must look like:
+#
+# [osds]
+# osd0 ceph_crush_root=foo ceph_crush_rack=bar
+
+crush_location: false
+osd_crush_location: "'root={{ ceph_crush_root }} rack={{ ceph_crush_rack }} host={{ ansible_hostname }}'"
+
+##############
+# CEPH OPTIONS
+##############
 
 #cephx: true
 

roles/ceph-osd/defaults/main.yml

@@ -2,8 +2,27 @@
 # You can override default vars defined in defaults/main.yml here,
 # but I would advice to use host or group vars instead
 
-## Ceph options
+####################
+# OSD CRUSH LOCATION
+####################
+
+# The following options will build a ceph.conf with OSD sections
+# Example:
+# [osd.X]
+# osd crush location = "root=location"
 #
+# This works with your inventory file
+# To match the following 'osd_crush_location' option the inventory must look like:
+#
+# [osds]
+# osd0 ceph_crush_root=foo ceph_crush_rack=bar
+
+crush_location: false
+osd_crush_location: "'root={{ ceph_crush_root }} rack={{ ceph_crush_rack }} host={{ ansible_hostname }}'"
+
+##############
+# CEPH OPTIONS
+##############
 
 # ACTIVATE THE FSID VARIABLE FOR NON-VAGRANT DEPLOYMENT
 fsid: "{{ cluster_uuid.stdout }}"

roles/ceph-osd/tasks/activate_osds.yml

@@ -31,6 +31,9 @@
   ignore_errors: True
   changed_when: False
 
+- include: osd_fragment.yml
+  when: crush_location
+
 - name: Start and add that the OSD service to the init sequence
   service: >
     name=ceph

roles/ceph-osd/tasks/osd_fragment.yml

@@ -0,0 +1,48 @@
+---
+- name: Get OSD path
+  shell: "df | grep {{ item }} | awk '{print $6}'"
+  with_items: devices
+  register: osd_path
+  ignore_errors: true
+
+- name: Get OSD id
+  command: cat {{ item.stdout }}/whoami
+  register: osd_id
+  with_items: osd_path.results
+  ignore_errors: true
+
+- name: Create a Ceph fragment and assemble directory
+  file: >
+    path={{ item }}
+    state=directory
+    owner=root
+    group=root
+    mode=0644
+  with_items:
+    - /etc/ceph/ceph.d/
+    - /etc/ceph/ceph.d/osd_fragments
+
+- name: Create the OSD fragment
+  template: >
+    src=osd.conf.j2
+    dest=/etc/ceph/ceph.d/osd_fragments/osd.{{ item.stdout }}.conf
+  with_items: osd_id.results
+
+- name: Copy ceph.conf for assembling
+  command: cp /etc/ceph/ceph.conf /etc/ceph/ceph.d/
+
+- name: Assemble OSD sections
+  assemble: >
+    src=/etc/ceph/ceph.d/osd_fragments/
+    dest=/etc/ceph/ceph.d/osd.conf
+    owner=root
+    group=root
+    mode=0644
+
+- name: Assemble Ceph conf and OSD fragments
+  assemble: >
+    src=/etc/ceph/ceph.d/
+    dest=/etc/ceph/ceph.conf
+    owner=root
+    group=root
+    mode=0644

roles/ceph-osd/templates/osd.conf.j2

@@ -0,0 +1,2 @@
+[osd.{{ item.stdout }}]
+osd crush location = {{ osd_crush_location }}