Linux pssh安装与使用

说明：我这是没有在密钥认证的情况下操作

1、安装pssh

[root@libin ansible]# yum install -y pssh

[root@libin ansible]# rpm -ql pssh
/usr/bin/pnuke
/usr/bin/prsync
/usr/bin/pscp
/usr/bin/pslurp
/usr/bin/pssh
/usr/bin/pssh-askpass

2、使用pssh

[root@libin ansible]# man pssh

[root@libin ansible]# cat hosts.txt
192.168.124.134
192.168.124.132

[root@libin ansible]# pssh -h hosts.txt hostname
[1] 19:13:21 [SUCCESS] 192.168.124.132
[2] 19:13:21 [SUCCESS] 192.168.124.134

[root@libin ansible]# pssh -h hosts.txt "hostname > /tmp/libin.txt"            #追加到 /tmp/libin.txt
[1] 19:16:32 [SUCCESS] 192.168.124.132
[2] 19:16:32 [SUCCESS] 192.168.124.134

[root@libin ansible]# cat /tmp/libin.txt
libin.com

-i：执行命令时，将标准错误的和标准输出的信息都显示出来

-p：同一时间并发去执行命令，指定最大的并发数量

-A：输入用户的密码

[1] 19:38:32 [SUCCESS] 192.168.124.134
wlcome to study redhat-linux
libin3.com
[2] 19:38:32 [SUCCESS] 192.168.124.132
libin.com

[root@libin ansible]# pssh -A -ih hosts.txt  ls -l /tmp/   

3、使用pscp

[root@libin ansible]# pscp -h hosts.txt /etc/hosts /tmp/          #将客户端的/etc/hosts拷贝到/tmp/下
[1] 19:43:36 [FAILURE] 192.168.124.134 Exited with error code 1
[2] 19:43:36 [SUCCESS] 192.168.124.132

[root@libin ansible]# pssh -h hosts.txt ls -l /tmp/
[1] 19:45:19 [SUCCESS] 192.168.124.132
[2] 19:45:19 [SUCCESS] 192.168.124.134

[root@libin ansible]# pssh -ih hosts.txt ls -l /tmp/      #查看/tmp/目录下的所有文件

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批量管理：ssh秘钥认证：（免密码登录 互信，私钥（钥匙）和公钥（锁头））

（1）把公钥发到服务器

在一台机器上可用管理和控制其他机器

secureCRT /xshell/ssh秘钥认证/pssh

1、创建公钥

[root@libin ansible]# ssh-keygen                                        #（默认为RSA类型，已经比较过时）

[root@libin ansible]# ssh-keygen -t dsa                               #-t：指定类型
Generating public/private dsa key pair.                                #生成一对公钥，私钥
Enter file in which to save the key (/root/.ssh/id_dsa):         私钥位置            #默认存放的目录为/root/.ssh/id_dsa，ll -a 查看所有隐藏的文件

Enter passphrase (empty for no passphrase):                     设置密码

Enter same passphrase again:
Your identification has been saved in /root/.ssh/id_dsa.
Your public key has been saved in /root/.ssh/id_dsa.pub.
The key fingerprint is:
SHA256:yQiMcqnRlhBguTI5uApgP8hv+z2upk6/eXmbHZSNFvI [email protected]
The key's randomart image is:
+---[DSA 1024]----+
|=o. |
|.+ = |
|+.O o . . |
|BO . o .o = |
|*+o . S E . |
|oo o o |
|o ... . . |
|. .o..o+ .o . |
| o+=*=ooo.. |
+----[SHA256]-----+

[root@libin ansible]# ll /root/.ssh/
总用量 24
-r--------. 1 root root 1584 2月 22 2022 authorized_keys
-rw------- 1 root root 668 9月 25 20:10 id_dsa
-rw-r--r-- 1 root root 604 9月 25 20:10 id_dsa.pub

 2、发送公钥到各个服务器

[root@libin ansible]# ssh-copy-id -i /root/.ssh/id_dsa.pub [email protected]            #-i：指定公钥位置  ，-f 强制

/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_dsa.pub"
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed

[root@libin ansible]# ssh 192.168.124.134 hostname                                                       #连接服务器执行一个命令，检查
Warning: Permanently added '192.168.124.134' (ECDSA) to the list of known hosts.
wlcome to study redhat-linux
libin3.com

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