Allow not having a Synapse signing key

README.md

@@ -73,4 +73,5 @@ dd if=/dev/random of=roles/filesystems/files/k5e.secret bs=1024 count=2
 ansible-vault encrypt roles/filesystems/files/k5e.secret
 
 # This is a signing key for Matrix Synapse. It should be from a previous install.
+# If you don't have one, it should be generated by Synapse.
 ansible-vault encrypt roles/services/synapse/files/signing.key.secret

roles/services/synapse/tasks/main.yml

@@ -8,6 +8,7 @@
     src: signing.key.secret
     dest: /etc/synapse/signing.key
   notify: Restart synapse
+  ignore_errors: true
 
 - name: Deploy matrix homeserver configuration
   template: