diff --git a/.gitignore b/.gitignore
index d3d1782..ceb93fa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 .*.swp
 *.retry
+vars_auth.yml
diff --git a/play.yml b/play.yml
index 0ddbe8b..05556cc 100644
--- a/play.yml
+++ b/play.yml
@@ -1,5 +1,6 @@
 ---
 - hosts: all
+  vars_files: ['vars-auth.yml']
   tasks:
   - name: "install epel repo" # for htop etc.
     yum:
@@ -11,6 +12,12 @@
       name: [ vim-enhanced, htop, screen, bind-utils, nmap-ncat, net-tools ]
       state: present
 
+  - name: "install ssh-key"
+    authorized_key:
+      user: thoto
+      key: "{{ssh_key}}"
+      state: present
+
 - hosts: htcondor
   pre_tasks:
   - name: "install htcondor repo"
diff --git a/roles/cobald/tasks/influxdb.yml b/roles/cobald/tasks/influxdb.yml
index 65a95dc..c86fa77 100644
--- a/roles/cobald/tasks/influxdb.yml
+++ b/roles/cobald/tasks/influxdb.yml
@@ -36,7 +36,8 @@
 - add_host:
     name: ed-influxdb-2
     ansible_connection: docker
-    ansible_docker_extra_args: "-H=ssh://ed-c7-1.virt.magni.thoto.net" # FIXME
+    # ansible_docker_extra_args: "-H=ssh://ed-c7-1.virt.magni.thoto.net" # FIXME
+    ansible_docker_extra_args: "-H=ssh://{{ansible_host}}" # FIXME
   changed_when: False
 
 - wait_for: # FIXME: does not work right -> fetch token fails