-centos_reposnap=http://mirror.centos.org/centos/7
-base_image=https://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud-1809.qcow2
+centos_arch_x86_64=x86_64
+centos_arch_aarch64=aarch64
+centos_arch=%(centos_arch_#ARCH#)s
+
+# centos_version=7.7.1908
+centos_version=7
+
+# centos_repo_url=http://vault.centos.org
+centos_repo_url=http://mirror.centos.org
+centos_reposnap_x86_64=%(centos_repo_url)s/centos/%(centos_version)s
+centos_reposnap_aarch64=%(centos_repo_url)s/altarch/%(centos_version)s
+centos_reposnap=%(centos_reposnap_#ARCH#)s
+
+# base_image_x86_64=https://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud-1907.qcow2
+base_image_x86_64=https://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud.qcow2
+base_image_aarch64=https://cloud.centos.org/altarch/7/images/aarch64/CentOS-7-aarch64-GenericCloud-1708.qcow2.xz
+base_image=%(base_image_#ARCH#)s