bash - How can I change default root password on multi server -

-

how can change default root password (root's password provided via centos installation) on multi server after install new centos on servers.

i can use ansible tool complete issue it's not work first time root password.

how can achieve purpose.

updated: don't want login each server change password. want change root password remote server via ssh , can complete @ least effort.

solution:

use ansible + below command easiest way change root pass on multi server.

echo "newpass" | passwd root --stdin

you try automate using expect. have used expect in past auto log in routers perform actions. expect scripts bit macros. can install expect 

sudo apt-get install expect

or

yum install expect

you create expect script , run each of 100 servers (possibly via shell script). example basic expect script give idea of does:

spawn ssh -l admin 123.111.123.11 match_max 100000 expect -ex "this system authorized use only.password:" send -- "topsecret\r" expect -ex "terminal type? \[xterm\]" send -- "\r" send -- "\n" expect -ex "myserver\[admin\]#" send -- "/usr/bin/uptime \r\n" expect -ex "myserve\[admin\]#"

obviously need change script should 'expect' actual output centos machines 'expected' stuff above router. link below more complicated script setting passwords might helpful you: http://surniaulula.com/2012/10/14/change-passwords-with-ssh-and-expect/


Comments

Post a Comment

Popular posts from this blog

java - Oracle EBS .ClassNotFoundException: oracle.apps.fnd.formsClient.FormsLauncher.class ERROR -

-
i need in configuring java on machine because, when try loading forms, loader goes in circles , gives error: java.lang.classnotfoundexception: oracle.apps.fnd.formsclient.formslauncher.class @ sun.plugin2.applet.applet2classloader.findclass(unknown source) @ sun.plugin2.applet.plugin2classloader.loadclass0(unknown source) @ sun.plugin2.applet.plugin2classloader.loadclass(unknown source) @ sun.plugin2.applet.plugin2classloader.loadclass(unknown source) @ java.lang.classloader.loadclass(unknown source) @ sun.plugin2.applet.plugin2classloader.loadcode(unknown source) @ sun.plugin2.applet.plugin2manager.createapplet(unknown source) @ sun.plugin2.applet.plugin2manager$appletexecutionrunnable.run (unknown source) @ java.lang.thread.run(unknown source) i have tried re-installing firefox, older versions of java runtime environments, disabling proxy. what missing? application working on other machines. i spent around 100 hours finding s
Read more

c# - how to use buttonedit in devexpress gridcontrol -

-
Image
i trying create gridcontrol buttonedit in 1 of columns. when user clicks button edit, popups form select product. when selection done on popup, returns datarow selection main grid below. but when column loses focus, value wrote column disappear. here code creates gridcontrol's data , buttonedit's click event. private void frmsiparisnew_load(object sender, eventargs e) { dt = new datatable(); dt.columns.add("malzeme_kodu",typeof(string)); dt.columns.add("malzeme_aciklama", typeof(string)); dt.columns.add("adet", typeof(decimal)); dt.columns.add("birim", typeof(string)); dt.columns.add("fiyat", typeof(decimal)); dt.columns.add("kur", typeof(string)); dt.columns.add("tutar", typeof(decimal)); datarow dr = dt.newrow(); dt.rows.add(dr); gc.datasource = dt; } private void repositoryitembuttoneditmal
Read more

nvd3.js - angularjs-nvd3-directives setting color in legend as well as in chart elements -

-
good morning i using angularjs-nvd3-directives, great, having difficulties when setting color of multi bar chart ( http://cmaurer.github.io/angularjs-nvd3-directives/multi.bar.chart.html ). the show legend works well: <div ng-controller="examplectrl"> <nvd3-multi-bar-chart data="exampledata" id="showlegendexample" width="550" height="300" showxaxis="true" showyaxis="true" xaxistickformat="xaxistickformatfunction()" showlegend="true"> <svg></svg> </nvd3-multi-bar-chart> </div> but when add option in conjunction color="colorfunction()" where, var colorarray = ['#ff0000', '#0000ff', '#ffff00', '#00ffff']; $scope.colorfunction = function() { return function(d, i) { return colorarray[i]; }; } the color of cha
Read more