问ansible-playbook命令在清单文件中设置变量时引发未定义的变量错误EN首先启动终端。 单击屏幕左上角的Ubuntu图标，在弹出的窗口中点击搜索栏，输入“terminal”， 稍等片刻，终端就会赫然在目！二话不说，直接点击！ 然后打开环境设置文件。 Ubuntu的环境设置文件为/etc/profile。它本质上是一个Shell脚本，其中...
- name: Set variable based on condition hosts: all tasks: - name: Task 1 command: echo "This is task 1" vars: my_var: "Value 1" when: my_var is defined and my_var == "Value 1" - name: Task 2 command: echo "This is task 2" vars: my_var: "Value 2" when: my_var is ...
# cat>whenOther.yml<<END---hosts:localremote_user:rootgather_facts:novars:testvar:"test"testvar1:testpath:/bin/bashteststr:"thisisstringdemo"testnum:1024a:-2-5b:[1,2,3,4,5]ver:7.4.1708tasks:-name:"Demo then defined"debug:msg:"Variable is defined"when:testvar is defined #关键点...
when: ansible_os_family=="RedHat"andansible_lsb.major_release|int>=6 在playbooks和inventory中定义的变量都可以使用,如,需要根据一个变量的bool值决定是否执行该任务: 1 2 vars: epic: true 条件语句: 1 2 3 tasks: -shell: echo"This certainly is epic!" when: epic 或: 1 2 3 tasks: -shell:...
when: run_my_task 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 以下示例测试my_service变量是否具有值。若有值,则将my_service的值用作要安装的软件包的名称。如果未定义my_service变量,则跳过任务且不显示错误。 --- - name: Test Variable is Defined Demo ...
What Makes A Valid Variable Name一个合法的变量名是什么样的 在我们开始使用variables时,知道什么组成一个合法的变量名是重要的。 变量名应该是字母、数字和下划线。变量始终以字母开头。 “foo_port”是个合法的变量名。”foo5”也是。 “foo-port”, “foo port”, “foo.port” 和“12”则不是合法的变量...
- name: Test VariableisDefined Demo hosts: 172.16.103.129 vars: my_service: httpd tasks: - name: "{{ my_service }} package is installed" yum: name: "{{ my_service }}" when: my_serviceisdefined 下表显示了在处理条件时可使用的一些运算: ...
The default is 'replace' but # this can also be set to 'merge'. #hash_behaviour = replace # by default, variables from roles will be visible in the global variable # scope. To prevent this, the following option can be enabled, and only # tasks and handlers within the role will see...
Instead of worrying about variable precedence, we encourage you to think about how easily or how often you want to override a variable when deciding where to set it. If you are not sure what other variables are defined, and you need a particular value, use--extra-vars(-e) to override ...
Variable: ANSIBLE_ANY_ERRORS_FATAL BECOME_ALLOW_SAME_USER Description: When False``(default), Ansible will skip using become if the remote user is the same as the become user, as this is normally a redundant operation. In other words root sudo to root. If ``True, this forces Ansibl...