无法通过ansible snap模块安装软件包

Question

我只想通过ansible使用分子来完成一项简单的任务。以下代码如下：

- name: Continue to install applications
  snap:
    name: "{{ item }}"
    classic: true
  loop:
    - bitwarden
    - clion

但是我得到了以下错误。使用--debug选项，我没有获得更多信息

Task exception was never retrieved
future: <Task finished name='Task-19' coro=<_read_stream() done, defined at /home/vlad/.local/lib/python3.8/site-packages/subprocess_tee/__init__.py:21> exception=ValueError('Separator is found, but chunk is longer than limit')>
Traceback (most recent call last):
  File "/usr/lib/python3.8/asyncio/streams.py", line 540, in readline
    line = await self.readuntil(sep)
  File "/usr/lib/python3.8/asyncio/streams.py", line 635, in readuntil
    raise exceptions.LimitOverrunError(
asyncio.exceptions.LimitOverrunError: Separator is found, but chunk is longer than limit

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/vlad/.local/lib/python3.8/site-packages/subprocess_tee/__init__.py", line 23, in _read_stream
    line = await stream.readline()
  File "/usr/lib/python3.8/asyncio/streams.py", line 549, in readline
    raise ValueError(e.args[0])
ValueError: Separator is found, but chunk is longer than limit
CRITICAL Ansible return code was 2, command was: ansible-playbook --diff --inventory....

可翻译版本：

ansible 2.10.4
  config file = None
  configured module search path = ['/home/vlad/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /home/vlad/.local/lib/python3.8/site-packages/ansible
  executable location = /home/vlad/.local/bin/ansible
  python version = 3.8.5 (default, Jul 28 2020, 12:59:40) [GCC 9.3.0]

分子版本：

molecule 3.2.2 using python 3.8 
    ansible:2.10.4
    delegated:3.2.2 from molecule
    vagrant:0.6.1 from molecule_vagrant

Answer 1

我检查了机器日志，发现ansible试图在我的机箱中安装snap时，一个步骤内存不足

Answer 2

给将来犯同样错误的人。该错误似乎与快照模块或任何其他模块无关。输出将打印在stdout/stderr上，新行（\n）将转义到\\n。 流模块将尝试在内容中查找b'\n'，但由于新行被转义，它将无法找到它。因此会出现错误

如问题中所述，错误源是asyncio/streams.py模块，而不是ansible本身

克服此问题的一种方法是通过对任务使用no_log:true来限制ansible输出

ansible将打印合理的错误消息，而不是抛出python的错误

- name: Check hbase regionserver jmx exporter
  hosts: hbase_regionservers
  tasks:
    - name: Check 'num regions' item
      uri:
        url: "http://{{ inventory_hostname }}:26010/metrics"
        return_content: true
      register: metrics
      no_log: true
      failed_when: metrics.content.find('hbase_regionserver_tables_num_tables 2.0') == -1

Answer 3

我能够使用Ubuntu上的snapansible模块安装snap软件包Ubuntu 20.04.1 LTS

代码：

 -

- name: Playbook for installing required packages
  hosts: localhost
  gather_facts: True
  connection: local
  become: yes
  become_user: root

  tasks:

  - name: Install required packages
    snap:
      classic: yes
      state: present
      name:
        - bitwarden
        - clion