nfs-server: add condition for checking if krb is needed

nfs-server/tasks/main.yml

@@ -45,7 +45,7 @@
     - config
 
 - name: ensure nfs-server is enabled and running
-  service: name=nfs-server state=running enabled=yes
+  service: name=nfs-server state=started enabled=yes
   tags:
     - nfs-server
     - service
@@ -55,6 +55,7 @@
   tags:
     - nfs-server
     - service-principal
+  when: nfs_krb is defined
 
 - name: check that we have a valid service principal
   shell: klist -k /etc/krb5.keytab | grep "nfs/{{ ansible_fqdn }}"
@@ -63,6 +64,7 @@
   tags:
     - nfs-server
     - service-principal
+  when: nfs_krb is defined
 
 - block:
     - name: create service principal
@@ -124,5 +126,6 @@
         - nfs-server
         - service-principal
   when: principal.rc == 1
+  when: nfs_krb is defined
 
 - meta: flush_handlers