Ansible Install MySql 5.7 - 设置根用户密码

Question

我最近将我的 vagrant 从 ubuntu/trusty-64 升级到 bento/ubuntu-16.04。 MySQL 更新为 5.7。我已经对我的剧本进行了多次更新，但在设置 root 用户的密码时我总是卡住。

过去（5.7 之前）以下内容就足够了：

- name: MySQL | Set the root password.
  mysql_user: 
    name=root 
    host=localhost
    password={{ mysql_root_password }}
  become: true

在我的剧本中，这是通过尝试删除匿名用户来测试的。

- name: MySQL | Delete anonymous MySQL server user for {{ server_hostname }}
  mysql_user: 
    name="" 
    host="{{ server_hostname }}" 
    state="absent" 
    login_user=root 
    login_password={{ mysql_root_password }}

但是，现在我的剧本在这一步失败了，返回：

"Access denied for user 'root'@'localhost'"

TASK [mysql : MySQL | Delete anonymous MySQL server user for vagrant] **********
task path: /Users/jonrobinson/vagrant/survey/playbooks/roles/mysql/tasks/mysql.yml:51
fatal: [vagrant]: FAILED! => {"changed": false, "failed": true, "msg": "unable to connect to database, check login_user and login_password are correct or /home/vagrant/.my.cnf has the credentials. Exception message: (1698, \"Access denied for user 'root'@'localhost'\")"}

我尝试了几种方法：

将 root 用户的密码设置为空白 mysql_root_password=""
正在尝试删除 root 用户，然后使用 Ansible 重新创建它。我得到同样的错误可能是因为它试图在 root 用户下操作。
正在 mysql 中手动更新 root 密码。 - 这似乎也不起作用（无法识别密码），除非我删除根用户并使用所有权限重新创建它。只是更新 root 用户密码似乎没有任何变化。

我的完整 MySQL YAML：

---
- name: MySQL | install mysql packages
  apt: pkg={{ item }} state=installed
  become: true
  with_items:    
   - mysql-client
   - mysql-common
   - mysql-server
   - python-mysqldb

- name: MySQL | create MySQL configuration file
  template:
    src=my.cnf.j2
    dest=/etc/mysql/my.cnf
    backup=yes
    owner=root
    group=root
    mode=0644
  become: true

- name: MySQL | create MySQLD configuration file
  template:
    src=mysqld.cnf.j2
    dest=/etc/mysql/conf.d/mysqld.cnf
    backup=yes
    owner=root
    group=root
    mode=0644
  become: true

- name: MySQL | restart mysql
  service: name=mysql state=restarted
  become: true

- name: MySQL | Set the root password.
  mysql_user: 
    name=root 
    host=localhost
    password={{ mysql_root_password }}
  become: true

- name: MySQL | Config for easy access as root user
  template: src=mysql_root.my.cnf.j2 dest=/root/.my.cnf
  become: true

- name: MySQL | Config for easy access as root user
  template: src=mysql_root.my.cnf.j2 dest={{ home_dir }}/.my.cnf
  when: "'{{ user }}' != 'root'"

- name: MySQL | Delete anonymous MySQL server user for {{ server_hostname }}
  mysql_user: name="" host="{{ server_hostname }}" state="absent" login_user=root login_password={{ mysql_root_password }}

- name: MySQL | Delete anonymous MySQL server user for localhost
  mysql_user: name="" state="absent" host=localhost login_user=root login_password={{ mysql_root_password }}

- name: MySQL | Secure the MySQL root user for IPV6 localhost (::1)
  mysql_user: name="root" password="{{ mysql_root_password }}" host="::1" login_user=root login_password={{ mysql_root_password }}

- name: MySQL | Secure the MySQL root user for IPV4 localhost (127.0.0.1)
  mysql_user: name="root" password="{{ mysql_root_password }}" host="127.0.0.1" login_user=root login_password={{ mysql_root_password }}

- name: MySQL | Secure the MySQL root user for localhost domain (localhost)
  mysql_user: name="root" password="{{ mysql_root_password }}" host="localhost" login_user=root login_password={{ mysql_root_password }}

- name: MySQL | Secure the MySQL root user for {{ server_hostname }} domain
  mysql_user: name="root" password="{{ mysql_root_password }}" host="{{ server_hostname }}" login_user=root login_password={{ mysql_root_password }}

- name: MySQL | Remove the MySQL test database
  mysql_db: db=test state=absent login_user=root login_password={{ mysql_root_password }}

- name: MySQL | create application database user
  mysql_user: name={{ dbuser }} password={{ dbpass }} priv=*.*:ALL host='%' state=present login_password={{ mysql_root_password }} login_user=root

- name: MySQL | restart mysql
  service: name=mysql state=restarted
  become: true

Answer 1

据我了解，在 MySQL 中，需要为 localhost、服务器的主机名和 127.0.0.1 更改根密码，并且还需要完全权限。这些方面的一些东西可能会有所帮助（注意：我只在 MariaDB 上测试过这个，而不是 MySQL）：

tasks:
  - name: Set a new root password
    mysql_user: check_implicit_admin=yes
                login_user=root
                login_password={{ mysql_root_password }}
                user=root
                password={{ NEW_mysql_root_password }}
                host={{ item }}
                priv='*.*:ALL,GRANT'
    with_items:
      - localhost
      - 127.0.0.1
      - {{ server_hostname }}
    notify:
        - restart_mariadb

handlers:
  - name: restart_mariadb
    service: name=mariadb
             state=restarted

Answer 2

我想通了。问题的要点与 mysql 5.7 在未提供密码时对 root 用户使用 auth_socket 有关。请参阅以下内容：“That plugin doesn’t care and doesn’t need a password. It just checks if the user is connecting using a UNIX socket and then compares the username.”

在这种情况下，您无法使用以下方式更新密码：

SET PASSWORD FOR 'root'@'localhost' = PASSWORD('test');

而必须使用：

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password='test';

解决方案 1：但是，从版本 2.0.2 开始，Ansible 没有考虑到这一点。我可以通过在安装 MySql 之前设置密码来解决这个问题

- name: Specify MySQL root password before installing
  debconf: name='mysql-server' question='mysql-server/root_password' value='{{mysql_root_password | quote}}' vtype='password'
  become: true

- name: Confirm MySQL root password before installing
  debconf: name='mysql-server' question='mysql-server/root_password_again' value='{{mysql_root_password | quote}}' vtype='password'
  become: true

- name: MySQL | install mysql packages
  apt: pkg={{ item }} state=installed
  become: true
  with_items:    
   - mysql-client
   - mysql-common
   - mysql-server
   - python-mysqldb
  ...

However, this has also since been addressed by Ansible

解决方案 2：最简单的解决方案是将 Ansible 升级到 2.2.1

Ansible Install MySql 5.7 - 设置根用户密码

Ansible Install MySql 5.7 - Set Root User Password

mysql

ansible

mysql-5.7

ubuntu-16.04