Ansible 可以检查磁盘空间是否存在作为变量提及的挂载 [英] Ansible to check diskspace for mounts mentioned as variable

问题描述

我是 ansible 的新手，目前正在制作一个游戏，它将查看远程机器的磁盘空间是否已达到 70% 的阈值.如果他们已经到达它应该抛出错误.

I am new to ansible and currently working on a play which will see if disk space of remote machines has reached 70% threshold. If they have reached it should throw error.

我在以下位置找到了一个很好的例子:使用 ansible 管理磁盘空间

i found a good example at : Using ansible to manage disk space

但在这个例子中，挂载名称是硬编码的.我的要求是动态传递它们.所以我写了下面似乎不起作用的代码:

but at this example the mount names are hard coded. And my requirement is to pass them dynamically. So i wrote below code which seems to not work:

    name: test for available disk space
    assert:
    that: 
    - not {{ item.mount == '{{mountname}}' and ( item.size_available < 
    item.size_total - ( item.size_total|float * 0.7 ) ) }}
    with_items: '{{ansible_mounts}}'
    ignore_errors: yes
    register: disk_free

    name: Fail the play
    fail: msg="disk space has reached 70% threshold"
    when: disk_free|failed

这个游戏在我使用时有效:

This play works when i use:

item.mount == '/var/app'

有没有办法动态输入mountname?我可以输入多个安装名称吗??

Is there any way to enter mountname dynamically ? and can i enter multiple mount names ??

我在 rhel 上使用 ansible 2.3

I am using ansible 2.3 on rhel

提前致谢:)

推荐答案

试试这个:

name: Ensure that free space on {{ mountname }} is grater than 30%
assert:
  that: mount.size_available > mount.size_total|float * 0.3
  msg: disk space has reached 70% threshold
vars:
  mount: "{{ ansible_mounts | selectattr('mount','equalto',mountname) | list | first }}"

1. that 是一个原始的 Jinja2 表达式，不要在其中使用大括号.

1. that is a raw Jinja2 expression, don't use curly brackets in it.

为什么要使用单独的 fail 任务，如果 assert 会失败并显示消息?

why do you use separate fail task, if assert can fail with a message?

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