ansible服务的部署和使用

ssh-keygen
-t 指定密钥类型  rsa1 dsa（常用） ecdsa
语法：
SYNOPSIS
     ssh-keygen [-q] [-b bits] -t type [-N new_passphrase] [-C comment]
                [-f output_keyfile]
     ssh-keygen -p [-P old_passphrase] [-N new_passphrase] [-f keyfile]
     ssh-keygen -i [-f input_keyfile]
     ssh-keygen -e [-f input_keyfile]
     ssh-keygen -y [-f input_keyfile]
     ssh-keygen -c [-P passphrase] [-C comment] [-f keyfile]
     ssh-keygen -l [-f input_keyfile]
     ssh-keygen -B [-f input_keyfile]
     ssh-keygen -D pkcs11
     ssh-keygen -F hostname [-f known_hosts_file] [-l]
     ssh-keygen -H [-f known_hosts_file]
     ssh-keygen -R hostname [-f known_hosts_file]
     ssh-keygen -r hostname [-f input_keyfile] [-g]
     ssh-keygen -G output_file [-v] [-b bits] [-M memory] [-S start_point]
     ssh-keygen -T output_file -f input_file [-v] [-a num_trials]
                [-W generator]
     ssh-keygen [-n] [-D smartcard]
     ssh-keygen -s ca_key -I certificate_identity [-h] [-Z principals]
                [-O option] [-V validity_interval] [-z serial_number] file ...
     ssh-keygen -L [-f input_keyfile]

第2章 Ansible软件介绍

• python 语言是运维人员必须会的语言
• ansible 是一个基于python 开发的自动化运维工具
• 其功能实现基于ssh远程连接服务
• ansible 可以实现批量系统配置，批量软件部署，批量文件拷贝，批量运行命令等功能

[root@m01 ~]# ansible all -m ping 
172.16.1.8 | SUCCESS => {
    "changed": false, 
    "ping": "pong"
}
172.16.1.41 | SUCCESS => {
    "changed": false, 
    "ping": "pong"
}
172.16.1.31 | SUCCESS => {
    "changed": false, 
    "ping": "pong"
}