Centos7 deploys lightweight automated operation and maintenance tool PSSH

Time:2021-9-15

PSSH is a tool written in python that can execute commands on multiple servers. In more and more enterprises, this automatic operation and maintenance tool is becoming more and more popular.
Centos7 deploying lightweight automated operation and maintenance tool PSSH centos7 deploying lightweight automated operation and maintenance tool PSSH

Download PSSH installation package
[[email protected] ~]# wget https://files.pythonhosted.or…
Install dependent packages
[[email protected] ~]# yum install -y make gcc gcc++ python-devel python-pip
Install PSSH
[[email protected] ~]# tar xf pssh-2.3.1.tar.gz
[[email protected] ~]# cd pssh-2.3.1
[[email protected] ~]# python setup.py install
Configure password free login
[[email protected] ~]# ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:3antaxjGw+hdgfSlrXLYhUe5vgHe9b0ehh/gUY9E8Eg [email protected]
The key’s randomart image is:
+—[RSA 2048]—-+
| E… |
| .. ++ |
| . o.*oo |
| …o.o|
| [email protected]+|
| . OoB B o|
| . o.B.o *.|
| . o.. +.o|
| .o..o |
+—-[SHA256]—–+
[[email protected] ~]# cd /root/.ssh/
[[email protected] .ssh]# ls
id_rsa id_rsa.pub
[[email protected] .ssh]# ssh-copy-id 172.16.1.112
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: “/root/.ssh/id_rsa.pub”
The authenticity of host ‘172.16.1.112 (172.16.1.112)’ can’t be established.
ECDSA key fingerprint is SHA256:yFvaxR1x5YDhhe+6xR/Ou6Sm+YPYvPAoiLVKt9mAnXA.
ECDSA key fingerprint is MD5:0d:c4:79:bc:36:7a:a4:82:95:4f:d5:d0:a3:c8:7d:2e.
Are you sure you want to continue connecting (yes/no)? yes
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed — if you are prompted now it is to install the new keys
[email protected]’s password:

Number of key(s) added: 1

Now try logging into the machine, with: “ssh ‘172.16.1.112’”
and check to make sure that only the key(s) you wanted were added.
[[email protected] .ssh]# ssh-copy-id 172.16.1.16
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: “/root/.ssh/id_rsa.pub”
The authenticity of host ‘172.16.1.16 (172.16.1.16)’ can’t be established.
ECDSA key fingerprint is SHA256:ANzlXzrGA87YLI2vzkPJ/iNPiSQ5JStJc95948jE8aw.
ECDSA key fingerprint is MD5:f9:f1:1b:5a:99:64:d8:d8:e9:9b:e6:bb:c3:d5:bd:e7.
Are you sure you want to continue connecting (yes/no)? yes
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed — if you are prompted now it is to install the new keys
[email protected]’s password:

Number of key(s) added: 1

Now try logging into the machine, with: “ssh ‘172.16.1.16’”
and check to make sure that only the key(s) you wanted were added.
Test password free login
[[email protected] ~]# ssh 172.16.1.112
Last login: Tue Jun 2 09:44:24 2020 from 172.16.1.16
[[email protected] ~]# ssh 172.16.1.16
Last login: Tue Jun 2 09:30:47 2020 from 172.16.1.100
Test PSSH
Create AAA file to store IP address
[[email protected] ~]# cat aaa
172.16.1.16
172.16.1.112
Batch execute date command
[[email protected] ~]# pssh -h aaa -l root -P “date”
172.16.1.16: Tuesday, June 2, 2020 09:59:48 CST
[1] 09:59:48 [SUCCESS] 172.16.1.16
172.16.1.112: Tuesday, June 2, 2020 09:59:48 CST
[2] 09:59:48 [SUCCESS] 172.16.1.112
View disk
[[email protected] ~]# pssh -h aaa -l root -P “lsblk”
172.16.1.16: NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part
├─centos-root 253:0 0 17G 0 lvm /
└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sr0 11:0 1 4.2G 0 rom
[1] 10:13:02 [SUCCESS] 172.16.1.16
172.16.1.112: NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 19G 0 part
├─centos-root 253:0 0 17G 0 lvm /
└─centos-swap 253:1 0 2G 0 lvm [SWAP]
sr0 11:0 1 4.2G 0 rom
[2] 10:13:03 [SUCCESS] 172.16.1.112

PSSH deployment completed!