diff --git a/roles/mysql_server/meta/main.yml b/roles/mysql_server/meta/main.yml
index 817423a..5804a9c 100644
--- a/roles/mysql_server/meta/main.yml
+++ b/roles/mysql_server/meta/main.yml
@@ -2,3 +2,4 @@
 
 dependencies:
   - role: repo_mariadb
+  - role: mkdir
diff --git a/roles/mysql_server/tasks/main.yml b/roles/mysql_server/tasks/main.yml
index eae830a..78f95c2 100644
--- a/roles/mysql_server/tasks/main.yml
+++ b/roles/mysql_server/tasks/main.yml
@@ -8,12 +8,7 @@
       - MySQL-python
   notify:
     - restart mariadb
-
-- name: Create pre and post backup hook dir
-  file: path={{ item }} state=directory mode=750
-  with_items:
-    - /etc/backup/pre.d
-    - /etc/backup/post.d
+  tags: mysql
 
 - name: Deploy backup scripts
   template: src={{ item.script }}.j2 dest=/etc/backup/{{ item.hook }}.d/{{ item.script }} mode=755
@@ -24,49 +19,60 @@
 
 - name: Create system override directory
   file: path=/etc/systemd/system/mariadb.service.d/ state=directory
+  tags: mysql
 
 - name: Modify the service unit
   template: src=systemd_limits.conf.j2 dest=/etc/systemd/system/mariadb.service.d/limits.conf
   register: mysql_unit
   notify: restart mariadb
+  tags: mysql
 
 - name: Reload systemd
   systemd: daemon_reload=True
   when: mysql_unit.changed
+  tags: mysql
 
 - name: Deploy my.cnf
   template: src=my.cnf.j2 dest=/etc/my.cnf
   notify: restart mariadb
+  tags: mysql
 
 - name: Start and enable MariaDB
   service: name=mariadb state=started enabled=True
+  tags: mysql
 
 - name: Check if we need to create a password for the root user
   stat: path=/root/.my.cnf
   register: my_no_cnf
+  tags: mysql
 
 - name: Generate a random password for user root
   command: openssl rand -base64 45
   register: my_root_pass
   when: not my_no_cnf.stat.exists
+  tags: mysql
 
 - name: Set MariaDB root password
   command: mysqladmin password "{{ my_root_pass.stdout }}"
   when:
     - not my_no_cnf.stat.exists
     - my_root_pass.stdout is defined
+  tags: mysql
 
 - name: Deploy /root/.my.cnf
   template: src=root_my.cnf.j2 dest=/root/.my.cnf
   when:
     - not my_no_cnf.stat.exists
     - my_root_pass.stdout is defined
+  tags: mysql
 
 - name: Remove anonymous user
   mysql_user: name='' host_all=yes state=absent
+  tags: mysql
 
 - name: Remove the test database
   mysql_db: name=test state=absent
+  tags: mysql
 
 - name: Handle MariaDB port
   iptables_raw:
@@ -74,13 +80,16 @@
     state: "{{ (mysql_src_ip is defined and mysql_src_ip | length > 0) | ternary('present','absent') }}"
     rules: "-A INPUT -m state --state NEW -p tcp --dport {{ mysql_port | default('3306') }} -s {{ mysql_src_ip | join(',') }} -j ACCEPT"
   when: iptables_manage | default(True)
+  tags: mysql
 
 - name: Create database admin
   mysql_user: name=sqladmin password={{ mysql_admin_pass }} host="%" priv="*.*:ALL,GRANT" state=present
+  tags: mysql
 
 - name: Create databases
   mysql_db: name={{ item }} state=present
   with_items: "{{ mysql_databases | default([]) }}"
+  tags: mysql
 
 - name: Create mysql users
   mysql_user: name={{ item.name }} password={{ item.password }} priv={{ item.privileges }} host={{ item.host | default('localhost') }} state=present
@@ -89,12 +98,15 @@
     - item.name is defined
     - item.password is defined
     - item.privileges is defined
+  tags: mysql
 
 - name: Remove databases
   mysql_db: name={{ item }} state=absent
   with_items: "{{ mysql_databases_to_remove }}"
+  tags: mysql
 
 - name: Remove users
   mysql_user: name={{ item.name }} host={{ item.host | default(omit) }} state=absent
   with_items: "{{ mysql_users_to_remove }}"
+  tags: mysql
 ...
diff --git a/roles/seafile/meta/main.yml b/roles/seafile/meta/main.yml
index 9e1b9f4..a964bea 100644
--- a/roles/seafile/meta/main.yml
+++ b/roles/seafile/meta/main.yml
@@ -5,3 +5,5 @@ dependencies:
     when: seafile_memcached_server is search('^(127\.0\.0\.1|localhost)')
   - role: clamav
     when: seafile_license is defined and seafile_scan_av == True
+  - role: mysql_server
+    when: seafile_db_server in ['127.0.0.1', 'localhost']