在Ubuntu上使用Ansible安装MySQL [英] Install MySQL with ansible on ubuntu

问题描述

我在无所事事的ubuntu上安装带有ansible的MySQL时遇到问题，

I have a problem installing MySQL with ansible on a vagrant ubuntu,

这是我的MySQL部分

This is my MySQL part

---
- name: Install MySQL
  apt:
    name: "{{ item }}"
  with_items:
    - python-mysqldb
    - mysql-server

- name: copy .my.cnf file with root password credentials
  template: 
    src: templates/root/.my.cnf
    dest: ~/.my.cnf
    owner: root
    mode: 0600

- name: Start the MySQL service
  service: 
    name: mysql 
    state: started
    enabled: true

  # 'localhost' needs to be the last item for idempotency, see
  # http://ansible.cc/docs/modules.html#mysql-user
- name: update mysql root password for all root accounts
  mysql_user: 
    name: root 
    host: "{{ item }}" 
    password: "{{ mysql_root_password }}" 
    priv: "*.*:ALL,GRANT"
  with_items:
    - "{{ ansible_hostname }}"
    - 127.0.0.1
    - ::1
    - localhost 

我有这个错误

failed: [default] => (item=vagrant-ubuntu-trusty-64) => {"failed": true, "item": "vagrant-ubuntu-trusty-64"}
msg: unable to connect to database, check login_user and login_password are correct or ~/.my.cnf has the credentials
failed: [default] => (item=127.0.0.1) => {"failed": true, "item": "127.0.0.1"}
msg: unable to connect to database, check login_user and login_password are correct or ~/.my.cnf has the credentials
failed: [default] => (item=::1) => {"failed": true, "item": "::1"}
msg: unable to connect to database, check login_user and login_password are correct or ~/.my.cnf has the credentials
failed: [default] => (item=localhost) => {"failed": true, "item": "localhost"}
msg: unable to connect to database, check login_user and login_password are correct or ~/.my.cnf has the credentials

我的.my.cnf是

[client]
user=root
password={{ mysql_root_password }}

以及在服务器上复制时

[client]
user=root
password=root

我不明白为什么创建〜/.my.cnf

I don't understand why, ~/.my.cnf is created

项目 Github

谢谢

推荐答案

无头安装mysql-server时，没有密码.因此，要使.my.cnf工作，它应该有一个空白的密码行.这是我测试的.my.cnf的结果:

When mysql-server is installed headlessly, there's no password. Therefore to make .my.cnf work, it should have a blank password line. Here's what I tested with for a .my.cnf:

[client]
user=root
password=

将.my.cnf置于root用户所有且只能由root读取的vagrant用户目录中也有点奇怪.

It's also slightly strange to put .my.cnf in your vagrant user directory as owned by root and only readable as root.

确保.my.cnf中的密码为空后，我能够在这四个上下文中正确设置root的密码.请注意，此后它无法运行，因为.my.cnf需要更新，因此它无法通过幂等性测试.

After ensuring the password was blank in .my.cnf, I was able to properly set the password for root in those four contexts. Note that it fails to run after that, since .my.cnf would need to be updated, so it fails the idempotency test.

在一个有趣的mysql_user模块页面上有一条注释，建议写密码，然后然后写.my.cnf文件.如果这样做，则mysql_user动作需要一个where子句(可能在此子句之前带有文件stat).

There's a note on the ansible mysql_user module page that suggests writing the password and then writing the .my.cnf file. If you do that, you need a where clause to the mysql_user action (probably with a file stat before that).

更优雅的是将check_implicit_admin与login_user和login_password一起使用.真是幂等.

Even more elegant is to use check_implicit_admin along with login_user and login_password. That's beautifully idempotent.

第三种方式，也许check_implicit_admin使其变得更加容易.

As a third way, perhaps check_implicit_admin makes it even easier.

这是我成功的剧本，上面显示了上述内容，并通过一些新服务器进行了测试. Kinda为此感到自豪.注意.my.cnf对于所有这些都是不必要的.

Here's my successful playbook showing the above, tested with a few fresh servers. Kinda proud of this. Note .my.cnf is unnecessary for all of this.

---
- hosts: mysql
  vars:
    mysql_root_password: fart
  tasks:
  - name: Install MySQL
    apt: name={{ item }} update_cache=yes cache_valid_time=3600 state=present
    sudo: yes
    with_items:
    - python-mysqldb
    - mysql-server
  #- name: copy cnf
  #  copy: src=.my.cnf dest=~/.my.cnf owner=ubuntu mode=0644
  #  sudo: yes
  - name: Start the MySQL service
    sudo: yes
    service: 
      name: mysql 
      state: started
      enabled: true
  - name: update mysql root password for all root accounts
    sudo: yes
    mysql_user: 
      name: root 
      host: "{{ item }}" 
      password: "{{ mysql_root_password }}"
      login_user: root
      login_password: "{{ mysql_root_password }}"
      check_implicit_admin: yes
      priv: "*.*:ALL,GRANT"
    with_items:
      - "{{ ansible_hostname }}"
      - 127.0.0.1
      - ::1
      - localhost 

(编辑-删除my.cnf)

(edit- removed my.cnf)

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