Allow exports to be managed.

README.md

@@ -10,7 +10,11 @@ None.
 
 ## Role Variables
 
-None.
+Available variables are listed below, along with default values (see `defaults/main.yml`):
+
+    nfs_exports: []
+
+A list of exports which will be placed in the `/etc/exports` file. See Ubuntu's simple [Network File System (NFS)](https://help.ubuntu.com/14.04/serverguide/network-file-system.html) guide for more info and examples. (Simple example: `nfs_exports: { "/home/public    *(rw,sync,no_root_squash)" }`).
 
 ## Dependencies
 

defaults/main.yml

@@ -0,0 +1,2 @@
+---
+nfs_exports: []

tasks/configure-Debian.yml

@@ -0,0 +1,4 @@
+---
+- name: Ensure NFS is running.
+  service: name=nfs-kernel-server state=started enabled=yes
+  when: nfs_exports

tasks/configure-RedHat.yml

@@ -0,0 +1,7 @@
+---
+- name: Ensure rpcbind and nfs are running.
+  service: "name={{ item }} state=started enabled=yes"
+  with_items:
+    - rpcbind
+    - nfs
+  when: nfs_exports

tasks/main.yml

@@ -5,3 +5,18 @@
 
 - include: setup-Debian.yml
   when: ansible_os_family == 'Debian'
+
+- name: Copy exports file.
+  template:
+    src: exports.j2
+    dest: /etc/exports
+    owner: root
+    group: root
+    mode: 0644
+
+# Configuration tasks.
+- include: configure-RedHat.yml
+  when: ansible_os_family == 'RedHat'
+
+- include: configure-Debian.yml
+  when: ansible_os_family == 'Debian'

tasks/setup-Debian.yml

@@ -5,5 +5,6 @@
     - nfs-common
     - nfs-kernel-server
 
-- name: Ensure NFS is running.
-  service: name=nfs-kernel-server state=started enabled=yes
+# This isn't necessary until exports are configured in /etc/exports.
+# - name: Ensure NFS is running.
+#   service: name=nfs-kernel-server state=started enabled=yes

tasks/setup-RedHat.yml

@@ -2,8 +2,9 @@
 - name: Ensure NFS utilities are installed.
   yum: name=nfs-utils state=installed
 
-- name: Ensure rpcbind and nfs are running.
-  service: "name={{ item }} state=started enabled=yes"
-  with_items:
-    - rpcbind
-    - nfs
+# This isn't necessary until exports are configured in /etc/exports.
+# - name: Ensure rpcbind and nfs are running.
+#   service: "name={{ item }} state=started enabled=yes"
+#   with_items:
+#     - rpcbind
+#     - nfs

templates/exports.j2

@@ -0,0 +1,13 @@
+# /etc/exports: the access control list for filesystems which may be exported
+#   to NFS clients.  See exports(5).
+#
+# Example for NFSv2 and NFSv3:
+# /srv/homes       hostname1(rw,sync,no_subtree_check) hostname2(ro,sync,no_subtree_check)
+#
+# Example for NFSv4:
+# /srv/nfs4        gss/krb5i(rw,sync,fsid=0,crossmnt,no_subtree_check)
+# /srv/nfs4/homes  gss/krb5i(rw,sync,no_subtree_check)
+#
+{% for export in nfs_exports %}
+{{ export }}
+{% endfor %}