問題背景

當設定好ansible的hosts後，嘗試用ansible去連線host裡設定的主機。

我使用的是162主機去連線163主機：

如果你之前從來沒有連線過163主機，執行後會報錯

[[email protected] ~]# ansible -i /etc/ansible/hosts web-servers -m ping
[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to
see details
192.168.1.163 | FAILED! => {
    "msg"
 
: "Using a SSH password instead of a key is not possible because Host Key checking is enabled and sshpass does not support this.  Please add this host's fingerprint to your known_hosts file to manage this host."

問題原因

這是因為你控制端和被控制端第一次通訊時，需要新增指紋

解決方案

有兩種解決方案：

方法1 . 可以直接修改配置檔案
vim /etc/ansible/ansible.cfg

然後在執行命令

[[email protected] ~]# ansible -i /etc/ansible/hosts web-servers -m ping
[WARNING]: Invalid characters were found in group names but not replaced, us
see details
192.168.1.163 | SUCCESS => {
    "ansible_facts": {
        "discovered_interpreter_python"
 
: "/usr/bin/python"
    }, 
    "changed": false, 
    "ping": "pong"
}

可以看到已經執行成功了。

方法2：直接登陸SSH，留下指紋即可

使用ssh 登陸遠端主機，只要登陸過一次，下次就不會報錯。