diff --git a/README.md b/README.md
index 7a10400..4d540c4 100644
--- a/README.md
+++ b/README.md
@@ -83,8 +83,12 @@ Options passed to `kubeadm init` when initializing the Kubernetes master. The `k
 Apt repository options for Kubernetes installation.
 
     kubernetes_yum_arch: x86_64
+    kubernetes_yum_base_url: "https://packages.cloud.google.com/yum/repos/kubernetes-el7-{{ kubernetes_yum_arch }}"
+    kubernetes_yum_gpg_key:
+      - https://packages.cloud.google.com/yum/doc/yum-key.gpg
+      - https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
 
-Yum repository options for Kubernetes installation.
+Yum repository options for Kubernetes installation. You can change `kubernete_yum_gpg_key` to a different url if you are behind a firewall or provide a trustworthy mirror. Usually in combination with changing `kubernetes_yum_base_url` as well.
 
     kubernetes_flannel_manifest_file_rbac: https://raw.githubusercontent.com/coreos/flannel/master/Documentation/k8s-manifests/kube-flannel-rbac.yml
     kubernetes_flannel_manifest_file: https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
diff --git a/defaults/main.yml b/defaults/main.yml
index 99b7750..5bb912d 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -40,6 +40,10 @@ kubernetes_apt_repository: "deb http://apt.kubernetes.io/ kubernetes-xenial {{ k
 kubernetes_apt_ignore_key_error: false
 
 kubernetes_yum_arch: x86_64
+kubernetes_yum_base_url: "https://packages.cloud.google.com/yum/repos/kubernetes-el7-{{ kubernetes_yum_arch }}"
+kubernetes_yum_gpg_key:
+  - https://packages.cloud.google.com/yum/doc/yum-key.gpg
+  - https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
 
 # Flannel config files.
 kubernetes_flannel_manifest_file_rbac: https://raw.githubusercontent.com/coreos/flannel/master/Documentation/k8s-manifests/kube-flannel-rbac.yml
diff --git a/tasks/setup-RedHat.yml b/tasks/setup-RedHat.yml
index 83335d9..99a7098 100644
--- a/tasks/setup-RedHat.yml
+++ b/tasks/setup-RedHat.yml
@@ -6,19 +6,15 @@
     enabled: true
     gpgcheck: true
     repo_gpgcheck: true
-    baseurl: https://packages.cloud.google.com/yum/repos/kubernetes-el7-{{ kubernetes_yum_arch }}
-    gpgkey:
-      - https://packages.cloud.google.com/yum/doc/yum-key.gpg
-      - https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
+    baseurl: "{{ kubernetes_yum_base_url }}"
+    gpgkey: "{{ kubernetes_yum_gpg_key }}"
 
 - name: Add Kubernetes GPG keys.
   rpm_key:
     key: "{{ item }}"
     state: present
   register: kubernetes_rpm_key
-  with_items:
-    - https://packages.cloud.google.com/yum/doc/yum-key.gpg
-    - https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
+  with_items: "{{ kubernetes_yum_gpg_key }}"
 
 - name: Make cache if Kubernetes GPG key changed.
   command: "yum -q makecache -y --disablerepo='*' --enablerepo='kubernetes'"