diff --git a/inventory/group_vars/all.yml b/inventory/group_vars/all.yml
index 61c57fd..22cdaa7 100644
--- a/inventory/group_vars/all.yml
+++ b/inventory/group_vars/all.yml
@@ -1,3 +1,6 @@
 ansible_python_interpreter: /usr/bin/python3
+
 basics_autoupdate_mail: backend@hamburg.freifunk.net
 basics_autoupdate_reboot_time: "04:00"
+
+nginx_error_log: "/dev/null error"
diff --git a/inventory/host_vars/srv01.yml b/inventory/host_vars/srv01.yml
index cc3511e..f16624c 100644
--- a/inventory/host_vars/srv01.yml
+++ b/inventory/host_vars/srv01.yml
@@ -6,6 +6,8 @@ basics_ssh_match_blocks:
       - AuthorizedKeysFile /home/certsync/authorized_keys
       - ChrootDirectory /home/certsync/root
       - ForceCommand internal-sftp
-nginx_resolver: 192.76.134.90 212.12.50.158
+
+nginx_resolver: "192.76.134.90 212.12.50.158"
+
 updates_tls_crt: /etc/letsencrypt/live/updates.hamburg.freifunk.net/fullchain.pem
 updates_tls_key: /etc/letsencrypt/live/updates.hamburg.freifunk.net/privkey.pem
diff --git a/inventory/host_vars/srv02.yml b/inventory/host_vars/srv02.yml
index 193ae24..0e09f60 100644
--- a/inventory/host_vars/srv02.yml
+++ b/inventory/host_vars/srv02.yml
@@ -2,10 +2,14 @@ basics_autoupdate_origins:
   - o=Node Source,n=${distro_codename}
   - o=Prosody,n=${distro_codename}
   - o=TorProject,n=${distro_codename}
+
 hopglass_frontend_tls_crt: /etc/letsencrypt/live/hopglass.hamburg.freifunk.net/fullchain.pem
 hopglass_frontend_tls_key: /etc/letsencrypt/live/hopglass.hamburg.freifunk.net/privkey.pem
+
 media_tls_crt: /etc/letsencrypt/live/media.hamburg.freifunk.net/fullchain.pem
 media_tls_key: /etc/letsencrypt/live/media.hamburg.freifunk.net/privkey.pem
+
 meta_tls_crt: /etc/letsencrypt/live/hamburg.freifunk.net/fullchain.pem
 meta_tls_key: /etc/letsencrypt/live/hamburg.freifunk.net/privkey.pem
-nginx_resolver: 127.0.0.1
+
+nginx_resolver: "127.0.0.1"
diff --git a/inventory/host_vars/srv03.yml b/inventory/host_vars/srv03.yml
index 075ccf1..ac0bb50 100644
--- a/inventory/host_vars/srv03.yml
+++ b/inventory/host_vars/srv03.yml
@@ -1,5 +1,7 @@
 certsync_host: srv01.hamburg.freifunk.net
-nginx_resolver: 80.252.105.162 80.252.105.194
+
+nginx_resolver: "80.252.105.162 80.252.105.194"
+
 updates_group: www-data
 updates_letsencrypt: srv01
 updates_owner: ffupdates