[root@localhost ~]# ansibleusage: ansible [-h] [--version] [-v] [-b] [--become-method BECOME_METHOD] [--become-user BECOME_USER] [-K] [-i INVENTORY] [--list-hosts] [-l SUBSET] [-P POLL_INTERVAL] [-B SECONDS] [-o] [-t TREE] [-k] [--private-key PRIVATE_KEY_FILE] ...
所以,只要执行动态inventory程序并带上--list选项能够输出这种数据格式,就是合格的动态inventory程序。 也就是说,如果我写一个Shell脚本能输出这段数据,那这个Shell脚本就是一个合格的inventory程序。 是否so easy?比如,我将上面命令的输出结果保存在/tmp/a.ini文件中: $ansible-inventory --list -i static_inventor...
A list variable combines a variable name with multiple values. The multiple values can be stored as an itemized list or in square brackets[], separated with commas. Defining variables as lists You can define variables with multiple values using YAML lists. For example: ...
Variables Lastly, we can create a host group for hosts that share a common variable. Then, we apply the variable value to the whole group at a time. Notably, we can define group variables at the group level in the inventory file or playbook. As a best practice, we should keep ...
- name: Install a list of packages with a list variable yum: name:"{{ packages }}"vars: packages: - httpd - httpd-tools - name: Remove the Apache package yum: name: httpd state: absent - name: Install the latest version of Apache from the testing repo ...
Variable name should contain characters, numbers or underscore Some of the valid variable names are like abc1, Some of the invalid variable names are like abc-1, abc%1, 12, abc xyz, xyz Now, Let’s discuss the ways to define variables in Ansible. In Ansible, Variables can be defined ...
Variable: ANSIBLE_COW_ACCEPTLIST :Version Added: 2.11 ANSIBLE_COW_PATH Description: Specify a custom cowsay path or swap in your cowsay implementation of choice. Type: string Default: None Ini: Section: [defaults] Key: cowpath Environment: Variable: ANSIBLE_COW_PATH ANSIBLE_COW_SEL...
To use the default variable in a task, we can define it as follows: - name:Create a database mysql_db: name:"{{ database_name }}" state:present Since we do not provide a different value for the database_name variable, Ansible creates a database with the “standard_db” name as ...
[-m MODULE_NAME] pattern Define and run a single task 'playbook' against a set of hosts positional arguments: pattern host pattern optional arguments: --ask-vault-pass ask for vault password --list-hosts outputs a list of matching hosts; does not execute anything else --playbook-dir ...
Answer:I would create Ansible playbooks that define tasks for monitoring resource usage, scaling instances up or down based on predefined thresholds, and updating load balancer configurations dynamically. Ansible’s cloud modules and APIs can be used to interact with the cloud provider’s infrastructur...