Rolling reboot for Galera PC compatibility (#40)

Co-authored-by: maximumG <none>
Co-authored-by: Emilien M <HanXHX@users.noreply.github.com>

.travis.yml

@@ -1,8 +1,4 @@
 env:
-  - PLATFORM='docker-buster-default-master'     ANSIBLE_VERSION='ansible>=2.8,<2.9'
-  - PLATFORM='docker-buster-upstream-master'    ANSIBLE_VERSION='ansible>=2.8,<2.9'
-  - PLATFORM='docker-buster-default-galera-1'   ANSIBLE_VERSION='ansible>=2.8,<2.9'
-  - PLATFORM='docker-buster-upstream-galera-1'  ANSIBLE_VERSION='ansible>=2.8,<2.9'
   - PLATFORM='docker-buster-default-master'     ANSIBLE_VERSION='ansible>=2.9,<2.10'
   - PLATFORM='docker-buster-upstream-master'    ANSIBLE_VERSION='ansible>=2.9,<2.10'
   - PLATFORM='docker-buster-default-galera-1'   ANSIBLE_VERSION='ansible>=2.9,<2.10'

README.md

@@ -20,7 +20,7 @@ Notes
 Requirements
 ------------
 
-Ansible 2.8+
+Ansible 2.9+
 
 Role Variables
 --------------

meta/main.yml

@@ -4,7 +4,7 @@ galaxy_info:
   description: Install and configure MariaDB (and Galera Cluster) on Debian
   company:
   license: GPLv2
-  min_ansible_version: 2.8
+  min_ansible_version: 2.9
   platforms:
   - name: Debian
     versions:

tasks/main.yml

@@ -25,7 +25,8 @@
     - etc/mysql/mariadb.conf.d/50-server.cnf.j2
   register: config
 
-- name: SERVICE | Restart now (prevent bugs)
+- name: SERVICE | Restart Mariadb now one at a time (prevent bugs)
+  throttle: 1
   service:
     name: mysql
     state: restarted