Linux Batch Management Server gadget--pssh

LinuxBulk Management Server Gadgets--psshFirst, Introduction

Pssh--Parallel SSH program

PSSH is a program for executing SSH in parallel on a number of hosts.  It provides features such as sending input to all of the processes, passing a password to SSH, saving output to files, and Timing out.

the simple understanding is that you can SSH , to operate a remote managed server in parallel.

Recommended, it is best to password-free login to all remotely managed servers, eliminating the hassle of entering passwords.

Second, installation

There are a lot of things on the internet Pssh the source of the installation, I will not introduce. The following describes my installation process, which is simple:

server operating system: Centos 6.5 x64 , itself Yum source, can be installed directly Pssh .

# yum-y Install Pssh

iii. usage and options

Pssh [Options ...] comand ...

Options:  

- H host_file       read hosts from the given host_file.    user

- H Host hostto be[email protected]]host[:p ORT], the default isUserto beRoot,Portto be A, can be omitted. Can be followed by multipleHost

- L User Specify the user for default access

- T Timeout Specify the time-out, in seconds

- o outdir Specify the save path for standard output information, note the path, not the file

- I. display standard output and standard error messages to the terminal

Command : Shell script or a Linux the action command

Iv. Examples(MansManual provides)

Connect to Host1 and Host2, and print ' Hello, world ' from each:

Pssh-i-H "host1 host2" echo "Hello, World"

Print "Hello, World" from each host specified in the file hosts.txt:

Pssh-i-H hosts.txt echo "Hello, World"

Run a command as root with a prompt for the root password:

Pssh-i-H hosts.txt-a-L root echo Hi

Run a long command without timing out:

Pssh-i-H hosts.txt-t 0 sleep 10000

v. Practical use of work1.Bulk upgrade of a server project

pssh-h host_file-o out_start_log_directory-l user "export bash_env=/etc/profile; Project Upgrade Script . Sh "

2.real-time monitoring of the server's project log to the specified folder

nohup pssh-h host_file-lroot-t 0-o out_log_directory "Tail-f Project Log Path "> Out_nohup_log_directory &

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Linux Batch Management Server gadget--pssh