Ansible(2) - Ansible inventory configuration and connectivity testing Ansible配置主机和连接测试教程

1. open the inventory file with your favorite editor and modify it

sudo vi /etc/ansible/hosts

add servers likes below:

[servers]
server1 ansible_host=192.168.1.100 ansible_ssh_user=test_user ansible_ssh_pass=password ansible_ssh_extra_args='-o StrictHostKeyChecking=no'
server2 ansible_host=192.168.1.101 ansible_ssh_user=test_user ansible_ssh_pass=password ansible_ssh_extra_args='-o StrictHostKeyChecking=no'

2. verify the inventory

ansible-inventory --list -y

3. test connectivity by using a Ansible ping

ansible all -m ping

4. run a testing command from control node to host nodes

ansible all -a "df -h"

参数说明 args:

• all: all servers
• -a: using ad-hoc commands
• df: disk free
• -h: –human-readable : print sizes in power of 1024