How to control 5 Linux hosts at the same time at the same time

1. Install SSH tools on the machine (there are many SSH tools such as xshell and fianlshell).

2. Configure SSH service in Linux, 3. Open the SSH tool to configure the IP address and port number of Linux, and then connect to multiple Linux hosts at the same time. Hope.

With parallel-ssh, there are three steps.

1. Generate the key $ssh-keygen -t rsa, and then press enter all the way.

2. There are two ways to copy the generated ID to another machine:

One is $ssh-copy-id -issh id usrname@ip, this way directly puts the content of rd to the .. of the target machinessh authorized keys.

The other is $scpssh/id_ usrname@ip:~/.

ssh authorized keys, which contains the contents of the keys in this folder. Generally speaking, the first type is fought for, because the second type does not have it when it is used for the first timessh authorized keys is the path that needs to be executed with the first command.

3. Whether the test is successful.

parallel-ssh -h -l pi (username) -p uptime test.

To execute the command.

parallel-ssh -h -l pi -p "python /home/pi/unswtestbed/client_"

It's useless, that one also has to manually enter the password, if you want to copy without entering the password, then there is only automatic operation and maintenance.

Or send me a private message.

The method of setting up a kickstart server is more cumbersome, and it is roughly divided into the following steps:1Copy the contents of the disc to the local directory; 2.

Configure the yum client; 3.configure TFTP; 4.Configure NFS, FTP, or HTTP; 5.

Configure the DHCP server;

Make unattended files, then do remote NFS, http installation! Multiple Linux can be deployed! Suggest it!

Go to this ** to find the information you need! You can also use a virtual machine to install it, and then you will have the bottom of it!

At present, Python scripts are mainly used for Linux servers to achieve automation, and the only Chinese book is "Python Unix and Linux System Administration Guide", which describes how the Python language provides a variety of more efficient task processing methods for managing Unix and Linux servers. Each chapter in the book raises specific management issues, such as concurrency or data backup ,..

With the cloud helper, multiple cloud hosts can be centrally managed in batches and visualized, and there is no limit to the number of hosts, and all functions are free to use. You must know that many of them are the more hosts, the higher the charges. And the software is comprehensive from head to toe.

There are sites, cloud hosts, monitoring, alarms, automatic backups, and so on.

According to my understanding, shell alone is not enough, you can use SSH to connect to the remote machine, but the remote machine also needs to store shell files. ssh ..'s password:

last login: thu apr 20 08:34:

26 2017 from [root@vm03 ] It is recommended that you learn about ansible, which can solve your problem of asking empty wax molds.

The solution is, of course, pxe+kickstart, which is convenient to learn once and use it all the time.

You need to prepare::

1. Switch, used to connect the server and the client (DHCP must be temporarily turned off) 2, the server host for deployment (this host takes over the DHCP service) 3, a bunch of other clients (need to be adjusted to pxe boot mode) and then deploy the server host according to the tutorial web link pxe+kickstart, after the completion of the client boot can be automatically installed.

1. PXE+KICKSTART+DHCP+NFS unattended Linux installation, provided that the computer you want to install supports PXE boot.

All network cards need to support PXE boot, 2. Install a kickstart server, DHCP server, TFTP server (the above can be installed on the same server), configure the kickstart configuration, 3. Configure other servers to start with PXE network card, and you can automatically assign IP after starting, and start the system installation by obtaining the kickstart configuration.

Unix Expect tool, in fact, many tools can be implemented, depending on how you do it, I hope it can help you!

The best way to do this is to use multicast, which can be programmed.

Enable the SSH service.

Create several users and give certain permissions.

And then that's it.

Shell, with putty.

Xwindow also has software to connect to, and Linux supports multiple users.

I can't get it now, the host was more expensive back then, and everyone used n multi-terminal devices to connect to the host to use. It's hard to find this kind of device now.

I don't understand why the landlord asks this question?? Linux itself is a multi-user system.

What does "multiple sets of outer heights" mean?

4. Prompt to enter the password of the management terminal, log in to the setting, and find the password function to find the password function to find the 5. Password function prompts you to enter the operating system account password and then log in to the cloud.

Cloud Helper, which can centrally manage cloud hosts for Windows and Linux systems for free.