9.2 Ansible 的安装 Ansible是一个简单但功能强大的自动化工具,它不需要在被管理节点(客户端)上安装特殊的软件,只需要在控制节点(管理服务器)上安装Ansible软件包。本节将介绍Ansible的安装过程。 9.2.1 业务环境说明 在开始安装之前,我们先了解一下典型的Ansible部署环境: 控制节点: 运行Ansible
Whileifsprobablynotsomethingyoushoulddooften,youcanalsoconditionally applyroleslikeso: -hosts:webservers roles: -{role:some_role,when:ansible_os_family==RedHat! Thisworksbyapplyingtheconditionaltoeverytaskintherole.Conditionalsarc coveredlateroninthedocumentation. Finally,youmaywishtoassigntagstotherolesyouspe...
A number of Jinja2 “tests” and “filters” can also be used in when statements, some of which are unique and provided by Ansible. Suppose we want to ignore the error of one statement and then decide to do something conditionally based on success or failure: ...
- name: Check if restarted shell: check_is_started.sh register: result listen: Restart processes - name: Restart conditionally step 2 service: name=service state=restarted when: result listen: Restart processes 32. How to generate encrypted passwords for a user module? We can do this by ...
It was challenging to make Ansible correctly initiate and monitor the process, as you will see in this blog post there are features within Ansible which make it possible to handle these error conditions to achieve the desired effects for cases like this.
Assuming you have two variable files for different environments: dev_vars.yml for development prod_vars.yml for production Here's how you can include these variables conditionally: - name: Include environment-specific variables hosts: all tasks: - name: Include variables based on environment include...
- name: Build unique list with some items conditionally omitted ansible.builtin.set_fact: namestuff: ' {{ (namestuff | default([])) | union([item]) }}' when: item != omit loop: - "{{ (fs_installed_smb_v1 | default(False)) | ternary(omit, 'FS-SMB1') }}" - "foo" - "...
- name: Execute a task conditionally command: /path/to/script.sh when: ansible_os_family == 'Debian' 1. 2. 3. 8、信息收集模块: setup: 用于收集目标主机的系统信息,如 IP 地址、操作系统、硬件信息等。例如: - name: Gather facts about the target hosts ...
For example, you can use the “ansible_distribution” fact to conditionally execute a task based on the operating system of the target hosts: - name: Install package on CentOS yum: name: my_package state: present when: "'CentOS' in ansible_distribution" In this example, the playbook is ...
File paths in Ansible are defined using variables or static values. When defining file paths, it is important to consider the operating system of the remote host. Ansible provides built-in variables like `ansible_os_family` and `ansible_distribution` that can be used to conditionally set file ...