- name: My Playbook hosts: all vars: projects: - project1 - project2 - project3 tasks: - name: Add projects to list set_fact: project_list: "{{ project_list | default([]) + [item] }}" loop: "{{ projects }}" when: item not in project_list 使用Ansible的模板和循环:可以创建一...
vars is defined # 变量存在 vars is not defined # 变量不存在 vars in list # 变量在列表中 When 四种register结果判断 when: result is failed #执行失败 when: result is success #执行成功 when: result is skipped #被跳过执行 when: result is changed #是否修改 示例1 bool判断 --- -name: when ...
是一样的效果): [root@hostname ~]# cat /etc/ansible/test.yml - hosts: kevin_server remote_user: root gather_facts: True tasks: - name: this command prints FAILED when it fails command: echo "FAILED" register: command_result - name: fail the play if the previous command did not succe...
vars is defined # 变量存在 vars is not defined # 变量不存在 vars in list # 变量在列表中 When 四种register结果判断 when: result is failed #执行失败 when: result is success #执行成功 when: result is skipped #被跳过执行 when: result is changed #是否修改 示例1 bool判断 --- -name: when ...
包含(in) 不包含(not in) 正则表达式匹配(match) 以下是一个示例,演示了如何在when语句中使用多个变量替换: 代码语言:yaml 复制 - name: Example task command: echo "Task executed" when: "{{ var1 }}" == "value1" and "{{ var2 }}" != "value2" 在这个示例中,当变量var1的值等于"value1"...
fail the play if the previous command did not succeed fail: msg="the command failed" when: "'FAILED' in command_result.stdout" - name: this is a test shell: echo "haha" [root@hostname ~]# ansible-playbook -v /etc/ansible/test.yml Using /etc/ansible/ansible.cfg as config file PLAY...
when: not epic 1. 2. 3. 如果引用的变量没有被定义,使用Jinja2的`defined`测试,可以跳过或者是抛出错误: tasks: - shell: echo "I've got '{{ foo }}' and am not afraid to use it!" when: foo is defined - fail: msg="Bailing out. this play requires 'bar'" ...
在Ansible中,提供的唯一一个通用的条件判断是when指令,当when指令的值为true时,则该任务执行,否则不执行该任务。 when一个比较常见的应用场景是实现跳过某个主机不执行任务或者只有满足条件的主机执行任务。 when: ansible_default_ipv4.address 条件表达式 "ip地址" ...
when: epic # 或者下面这样 when: not epic 如果一个变量不存在,你可以使用Jinja2的defined命令跳过或略过 tasks: - when: foo is defined - when: bar is not defined 还可以使用 运算符号 tasks: - command: echo {{ item }} with_items: [ 0, 2, 4, 6, 8, 10 ] when: item > 5 ...
debian.yml when: ansible_facts['os_family']|lower == 'debian' # roles/example/tasks/redhat.yml - name: Install web server ansible.builtin.yum: name: "httpd" state: present # roles/example/tasks/debian.yml - name: Install web server ansible.builtin.apt: name: "apache2" sta...