adding hostname role, setting hostname during provisioning

playbooks/edx-east/edx_provision.yml

@@ -24,3 +24,5 @@
     # gh_users hash must be passed
     # in as a -e variable
     - gh_users
+    # Sets hostname to edx-server (default)
+    - hostname

playbooks/roles/edxlocal/tasks/main.yml

@@ -40,17 +40,3 @@
 
 - name: edxlocal | install memcached
   apt: pkg=memcached state=present
-
-- name: edxlocal | set the hostname to edx-server (single instance only)
-  template: src=hosts.j2 dest=/etc/hosts
-  register: etc_hosts
-
-- name: edxlocal | set the hostname to edx-server (single instance only)
-  template: src=hostname.j2 dest=/etc/hostname
-  register: etc_hostname
-
-- name: edxlocal | update hostname
-  shell: >
-    hostname -F /etc/hostname
-  when: etc_hosts.changed or etc_hostname.changed
-

playbooks/roles/edxlocal/templates/hostname.j2

-{{ edxlocal_hostname }}

playbooks/roles/gh_users/tasks/main.yml

@@ -22,7 +22,7 @@
 # TODO: give limited sudo access to this group
 - name: gh_users | grant full sudo access to gh group
   copy: >
-    content="%adm ALL=(ALL) NOPASSWD:ALL"
+    content="%gh ALL=(ALL) NOPASSWD:ALL"
     dest=/etc/sudoers.d/gh owner=root group=root
     mode=0440 validate='visudo -cf %s'
 

playbooks/roles/hostname/defaults/main.yml

+---
+hostname: edx-server

playbooks/roles/hostname/tasks/main.yml

+---
+# A very simple role to change a hostname on an ubuntu server
+
+- name: hostname | update /etc/hosts
+  template: src=hosts.j2 dest=/etc/hosts
+  register: etc_hosts
+
+- name: hostname | update /etc/hostname
+  template: src=hostname.j2 dest=/etc/hostname
+  register: etc_hostname
+
+- name: hostname | run hostname
+  shell: >
+    hostname -F /etc/hostname
+  when: etc_hosts.changed or etc_hostname.changed
+
+

playbooks/roles/hostname/templates/hostname.j2

+{{ hostname }}

playbooks/roles/edxlocal/templates/hosts.j2 → playbooks/roles/hostname/templates/hosts.j2

-127.0.0.1 {{ edxlocal_hostname }} localhost
+127.0.0.1 {{ hostname }} localhost
 
 # The following lines are desirable for IPv6 capable hosts
 ::1 ip6-localhost ip6-loopback