fix #23

Alexey Bobrov · Alexey Bobrov · commit 510b95ba8b43 · 2019-01-14T11:14:39.000+02:00
diff --git a/tasks/install_apt.yml b/tasks/install_apt.yml
@@ -12,6 +12,7 @@
     repo: "{{ clickhouse_repo_old }}"
     state: absent
   become: true
+  when: clickhouse_repo_old is defined
 
 - name: Install by APT | Repo installation
   apt_repository:
