我是ansible的新手。我的要求是需要获取托管在AWS上的超过450个Linux服务器的操作系统版本。AWS没有提供此功能，它建议我们从puppet或chef中获取。我创建了一些简单的playbooks，但无法运行。
---
- hosts: testmachine
user: ec2-user
sudo: yes
tasks:
- name: Update all packages to latest
yum: name=* state=latest
task:
- name: obtain OS version
shell: Redhat-release
playbook应该输出一个包含主机名和操作系统版本的文本文件。如有任何见解，将不胜感激。
使用以下Jinja2表达式之一：
{{ hostvars[inventory_hostname].ansible_distribution }}
{{ hostvars[inventory_hostname].ansible_distribution_major_version }}
{{ hostvars[inventory_hostname].ansible_distribution_version }}
其中：
hostvars和ansible_...是Ansible内置功能，会自动收集ansible_distribution是被Ansible处理的主机例如，假设您正在对运行CentOS 7分发版的主机 host.example.com 运行Ansible角色 test_role ：
---
- debug:
msg: "{{ hostvars[inventory_hostname].ansible_distribution }}"
- debug:
msg: "{{ hostvars[inventory_hostname].ansible_distribution_major_version }}"
- debug:
msg: "{{ hostvars[inventory_hostname].ansible_distribution_version }}"
将为您提供：
TASK [test_role : debug] *******************************************************
ok: [host.example.com] => {
"msg": "CentOS"
}
TASK [test_role : debug] *******************************************************
ok: [host.example.com] => {
"msg": "7"
}
TASK [test_role : debug] *******************************************************
ok: [host.example.com] => {
"msg": "7.5.1804"
}
inventory_hostname 是被 Ansible 处理的主机" 而不是 ansible_distribution 吧？ - Björn Albersansible_facts['distribution']，它可以像{{ hostvars[inventory_hostname].ansible_distribution }}一样返回操作系统名称。 - snowpeak- hosts: all
become: no
vars:
output_file: os.csv
tasks:
- block:
# For permisison setup.
- name: get current user
command: whoami
register: whoami
run_once: yes
- name: clean file
copy:
dest: "{{ output_file }}"
content: 'hostname,distribution,version,release'
owner: "{{ whoami.stdout }}"
run_once: yes
- name: fill os information
lineinfile:
path: "{{ output_file }}"
line: "{{ ansible_hostname }},\
{{ ansible_distribution }},\
{{ ansible_distribution_version }},\
{{ ansible_distribution_release }}"
# Tries to prevent concurrent writes.
throttle: 1
delegate_to: localhost
os.csv的逗号分隔文件。您可以使用任何变量来编辑line：。Ansible已经自动提供了关于远程主机的许多信息，这些信息可以在"hostvars"变量中找到。
如果您想查看名为"my_remote_box_name"的主机的信息，则可以执行以下操作：
- debug: var=hostvars['my_remote_box_name']
一些操作系统信息存储在
hostvars['my_remote_box_name']['ansible_lsb']
对于我的一个Ubuntu主机来说，可能会是这样：
{
"hostvars['my_remote_box_name']['ansible_lsb']": {
"codename": "xenial",
"description": "Ubuntu 16.04.1 LTS",
"id": "Ubuntu",
"major_release": "16",
"release": "16.04"
}
- debug: msg="My release is {{ansible_lsb.release}}"
输出：
"msg": "My release is 16.04"
对于一些Windows实例：
- debug:
msg:
- "ansible_distribution {{ hostvars[inventory_hostname].ansible_distribution }}"
- "major version {{ hostvars[inventory_hostname].ansible_distribution_major_version }}"
- "version {{ hostvars[inventory_hostname].ansible_distribution_version }}"
ok: [server1] => {
"msg": [
"ansible_distribution Microsoft Windows Server 2008 R2 Standard ",
"major version 6",
"version 6.1.7601.65536"
]
}
ok: [server2] => {
"msg": [
"ansible_distribution Microsoft Windows Server 2016 Standard",
"major version 10",
"version 10.0.14393.0"
]
}
/etc/os-release以获取aws实例的详细信息。[ec2-user@ip-xx-xx-xx ~]$ cat /etc/os-release
NAME="Amazon Linux AMI"
VERSION="2016.03"
ID="amzn"
ID_LIKE="rhel fedora"
VERSION_ID="2016.03"
PRETTY_NAME="Amazon Linux AMI 2016.03"
ANSI_COLOR="0;33"
CPE_NAME="cpe:/o:amazon:linux:2016.03:ga"
HOME_URL="http://aws.amazon.com/amazon-linux-ami/"
cat命令的标准输出。 - MillerGeek- name: obtain OS version
shell: Redhat-release
register: result
- name: print OS version
debug: var=result.stdout
gather_facts: True。 - ishigoya