This Ansible role will install MySQL on a *nix and may be run multiple times without failure

2015-03-21

• The 'etc.my.cnf’ template does not include user and password entries
• The '.my.cnf’ template only includes user and password entries and is copied to root’s home directory (since my script runs as root), not the deploy’s home directory.
• Root’s password is set for security reasons
• Deploy’s only granted access to the application’s databases. I use db1 and db2 as examples here.

Put the below section in your /tasks/main.yml file.
---

  - name: Install MySQL packages
    apt: pkg= state=installed
    with_items:
      - bundler
      - mysql-server-core-5.5
      - mysql-client-core-5.5
      - libmysqlclient-dev
      - python-mysqldb
      - mysql-server
      - mysql-client
      - build-essential
- name: Remove the MySQL test database
    action: mysql_db db=test state=absent
- name: Create global my.cnf
    template: src=etc.my.cnf dest=/etc/mysql/my.cnf
- name: Create databases
    mysql_db: name= state=present collation=utf8_general_ci encoding=utf8
    with_items:
      - db1
      - db2
- name: Add deploy DB user and allow access to news_* databases
    mysql_user: name= password= host="%" priv=db1.*:ALL/db2.*:ALL,GRANT state=present
- name: Set root password
    mysql_user: name=root password= host="" priv=*.*:ALL,GRANT state=present
    with_items:
      - ""
      - 127.0.0.1
      - ::1
      - localhost
- name: Create local my.cnf for root user
    template: src=my.cnf dest=/root/.my.cnf owner=root mode=0600
- name: Restart the MySQL service
    action: service name=mysql state=restarted enabled=true