How to write bash script for creating user on multiple Linux hosts?
I wonder whether someone can help me with what I'm trying to achieve
Basically, the objective is one script to create new user on more than 70 linux hosts if required.
Everything works apart from the highlighted part. It gave me an output passwd: Unknown user name ''. when try to set remote password for new user. It seems like it's trying to set password locally and not remotely.
The idea is all information about username,password,uid,comments is pull out from the file IDENTIFY. That way, if we create new user, people only edit the file than the script.
All fields in the IDENTIFY file separates by white space.
Please help how can I achieve this
Code:
#!/bin/bash
HOSTS="/tmp/test/serverlist"
DDID="IDENTIFY"
HOMEPATH="/home/$UNAME"
for i in `cat $HOSTS` ;
do
UNIQUE=`awk -F " " '{print $1 }' $DDID`
RUID=`ssh $i 'grep "$UNIQUE" /etc/passwd'`
if [[ -ne "$RUID" ]]
then
echo "User ID is currently available on $i, ready to add new user"
UNAME=`awk -F " " '{print $2 }' $DDID`
PASSWORD=`awk -F " " '{print $3 }' $DDID`
ROLE=`awk -F " " '{print $4 }' $DDID`
`ssh $i useradd -u "$UNIQUE" -d "$HOMEPATH" -s /bin/bash -c "$ROLE" -m -k /etc/skel/ "$UNAME"`
`ssh $i echo "$PASSWORD" | passwd --stdin "$UNAME"`
else
echo "User ID exist on $i, check new ID"
fi
done
Moderator's Comments:
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Last edited by radoulov; 02-18-2013 at 06:30 AM..
Reason: Miss highlight fault line
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LEARN ABOUT SUSE
ssh-copy-id
SSH-COPY-ID(1) General Commands Manual SSH-COPY-ID(1)NAME
ssh-copy-id - install your public key in a remote machine's authorized_keys
SYNOPSIS
ssh-copy-id [-i [identity_file]] [user@]machine
DESCRIPTION
ssh-copy-id is a script that uses ssh to log into a remote machine (presumably using a login password, so password authentication should be
enabled, unless you've done some clever use of multiple identities)
It also changes the permissions of the remote user's home, ~/.ssh, and ~/.ssh/authorized_keys to remove group writability (which would oth-
erwise prevent you from logging in, if the remote sshd has StrictModes set in its configuration).
If the -i option is given then the identity file (defaults to ~/.ssh/id_rsa.pub) is used, regardless of whether there are any keys in your
ssh-agent. Otherwise, if this:
ssh-add -L
provides any output, it uses that in preference to the identity file.
If the -i option is used, or the ssh-add produced no output, then it uses the contents of the identity file. Once it has one or more fin-
gerprints (by whatever means) it uses ssh to append them to ~/.ssh/authorized_keys on the remote machine (creating the file, and directory,
if necessary)
SEE ALSO ssh(1), ssh-agent(1), sshd(8)OpenSSH 14 November 1999 SSH-COPY-ID(1)
02-18-2013
How to write bash script for creating user on multiple Linux hosts?
