adding hostname change in edxlocal

playbooks/edx-east/deploy_edxapp.yml

@@ -4,5 +4,6 @@
   gather_facts: True
   roles:
     - common
+    - edxlocal
     - supervisor
     - edxapp

playbooks/roles/edxlocal/defaults/main.yml

 ---
+edxlocal_hostname: edx-server
 edxlocal_debian_pkgs:
   - python-mysqldb
   - mysql-server-5.5
-  - postfix 
+  - postfix
   - python-pycurl

playbooks/roles/edxlocal/tasks/main.yml

@@ -40,3 +40,17 @@
 
 - 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/edxlocal/templates/hosts.j2

+127.0.0.1 {{ edxlocal_hostname }} localhost
+
+# The following lines are desirable for IPv6 capable hosts
+::1 ip6-localhost ip6-loopback
+fe00::0 ip6-localnet
+ff00::0 ip6-mcastprefix
+ff02::1 ip6-allnodes
+ff02::2 ip6-allrouters
+ff02::3 ip6-allhosts