- name: Set variable based on condition hosts: localhost vars: environment: prod tasks: - set_fact: message: "This is production environment" when: environment == 'prod' - set_fact: message: "This is development
tasks: - name: Set the value of my_variable based on condition set_fact: my_variable: "value1" when: condition1 - set_fact: my_variable: "value2" when: condition2 ``` 通过这样的方式,我们可以根据不同的条件来为变量赋予不同的值,从而实现更加智能的配置管理。 总之,定义空变量是Ansible中非...
],"short_description":"Try to connect to host, verify a usable python and return C(pong) on success","version_added":"historical","version_added_collection":"ansible.builtin"},"examples":"\n# Test we can logon to 'webservers' and execute python with json lib.\n# ansible webservers ...
- name: Override variable value based on condition hosts: my_hosts tasks: - set_fact: my_var: "new_value" when: some_condition 在上面的示例中,如果some_condition为真,则my_var的值将被设置为new_value。 请注意,以上方法可以单独使用,也可以组合使用,具体取决于您的需求和场景。此外,Ansible还提...
我这里环境如下,mcw1是ansible主机,mcw2是当做跳板机,mcw3是当做目标主机。现在mcw1上通过mcw2去连接mcw3测试成功 10.0.0.131 mcw1 10.0.0.132 mcw2 10.0.0.133 mcw3 [root@mcw1 ~]$ ssh -o"ProxyCommand ssh -p 22 root@10.0.0.132 nc %h %p"-p22 root@10.0.0.133Last login: Mon Feb722:10:292022...
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.
关于什么ansible,我这里就不做科普了,总之一句话,要做分布式系统的运维,实现批量系统配置、批量程序部署、批量运行命令等功能,ansible就是一大杀器,能令你事半功倍。 但作为一个cli工具,其使用场景还是受cli的限制,无法实现运行过程中更深入的交互和逻辑控制。ansible本身是用python做的,所以实际上是和python的脚本控...
If you want the task to fail when only one condition is satisfied, change thefailed_whendefinition to failed_when:result.rc == 0 or "No such" not in result.stderr If you have too many conditions to fit neatly into one line, you can split it into a multi-line YAML value with>. ...
In Ansible, the “when” keyword is used to specify a condition or a set of conditions that must be met in order for a task to be executed. It allows you to add conditional logic to your Ansible playbooks and control the flow of execution based on certain conditions. The “when” keyw...
script module– Runs a local script on a remote node after transferring it service module– Manage services service_facts module– Return service state information as fact data set_fact module– Set host variable(s) and fact(s). set_stats module– Define and display stats for the current ans...