Running commands on multiple servers

4,207

Solution 1

I know some tools for that, but the easiest is Fabric. Take a look and tell me what do you think.

Solution 2

Sounds like you're looking for GNU Parallel. That's pretty much exactly what it was written for. In your case, you would do:

parallel ./remote --sshloginfile ALL_SERVERS_IP

The above assumes that ALL_SERVERS_IP is a text file with one IP or hostname per line. If they can have different logins, make the list like so:

[email protected]
[email protected]
[email protected]

Solution 3

Yes. Try pdsh, which will execute a command on multiple remote hosts simultaneously. Your task could be written like so:

pdsh -w ssh:$(echo $(<ALL_SERVERS) | sed -e 's/ /,/g') 'printf "%s\n" ...'

4,207

TheEagle

Updated on September 18, 2022

Comments

TheEagle almost 2 years
I'am trying to make a navigation bar horizontal but at the moment its vertical. Any help would be great. The problem is that its vertical. I have made the list in html and then used my other file in css to edit it.

HTML:
```
<html>
<head>
    <link rel="stylesheet" href="Style/style.css" type="text/css"/>
</head>
<body>
<div class="horizontal">
<ul>
<li><a href="#">Home</a></li>
<li><a href="#">News</a></li>
<li><a href="#">Articles</a></li>
</ul>
</div>

</body>
<html>
```
CSS:
```
div.horizontal
{
width:100%;
height:63px;
}
div.horizontal ul
{
list-style-type:none;
margin:0;
padding:0;
}
div.horizontal li
{
float:left;
}
div.horizontal a
{
display:block;
width:86px;
}
div.horizontal a:link,div.horizontal a:visited
{
font-weight:bold;
color:#FFFFFF;
background-color:#98bf21;
text-align:center;
padding:4px;
text-decoration:none;
text-transform:uppercase;
}
div.horizontal a:hover,div.horizontal a:active
{
background-color:#7A991A;
}
```
- Joshua Dwire over 11 years
  
  I created a jsFiddle (jsfiddle.net/jdwire/dKQxu) with your code, and it displays horizontal. I don't see the problem. (I'm using Google Chrome 25 on Mac.)
- TheEagle over 11 years
  
  Guys sorry it was my wrapper class i have fixed this, it was stopping it for some reason. Thanks for the help!
- depquid almost 10 years
  
  There are a bunch of options. This blog lists 10: blog.crdlo.com/2010/07/parallel-ssh-tool-roundup.html
- slm almost 10 years
  
  related: unix.stackexchange.com/questions/83571/… & unix.stackexchange.com/questions/84936/…
- slm almost 10 years
  
  These are related too: unix.stackexchange.com/questions/19008/… & unix.stackexchange.com/questions/3239/…
PlantTheIdea over 11 years

it does with a little trick: stackoverflow.com/questions/3754469/…
Oleksandr almost 10 years

I checked on the central server and couldn't find parallel on it.
terdon almost 10 years

@user67186 you only need to install it on your machine, the one you will launch the job from.
Ole Tange almost 10 years

Use a bash function to give the 'printf/hostname' stuff to run. Then use --env to export that function to the remote server: parallel --env myfunc --slf ALL_SERVERS_IP --nonall myfunc
Oleksandr almost 10 years

All anwsers are useful but I can choose one solution. Thanks!
WangJie almost 10 years

You're welcome man. I'm glad to help.
Jenson over 8 years

@terdon How do you have to install parallel? Can't find anything useful.
terdon over 8 years

@Jenson see the link in my answer. Most Linux distributions (probably all) will have it in their repositories as parallel. For others, the link provides download packages.