create setup-user.sh

Author: leaddevops

ansible/IaC/setup-user.sh

@@ -0,0 +1,141 @@
+#!/bin/bash
+
+now=`date +%d%b%Y-%H%M`
+
+exp()
+{
+	"$1" <(cat <<-EOF
+	spawn passwd $USER
+	expect "Enter new UNIX password:"
+	send -- "$passw\r"
+	expect "Retype new UNIX password:"
+	send -- "$passw\r"
+	expect eof
+	EOF
+	)
+	echo "password for USER $USER updated successfully - adding to sudoers file now"
+}
+
+setup_pass()
+{
+
+if [ $1 == "sles" ];then
+  
+   if [ ! -f /usr/bin/expect ] && [ ! -f /bin/expect ];then
+#        zypper -y update
+        zypper install -y expect
+        exp "/usr/bin/expect"
+   else
+        exp "/usr/bin/expect"
+   fi
+
+elif [ $1 == "ubuntu" ];then
+   
+   if [ ! -f /usr/bin/expect ] && [ ! -f /bin/expect ];then
+        apt-get update
+        apt install -y expect
+        exp "/usr/bin/expect"
+   else
+        exp "/usr/bin/expect"
+   fi
+
+elif [ $1 == "amzn" ];then
+
+   echo $1
+   if [ ! -f /usr/bin/expect ] && [ ! -f /bin/expect ];then
+        rpm -Uvh http://epel.mirror.net.in/epel/6/x86_64/epel-release-6-8.noarch.rpm
+        yum install -y expect
+        exp "/usr/bin/expect"
+   else
+        exp "/usr/bin/expect"
+   fi
+
+elif [ $1 == "centos" ];then
+
+   echo $1
+   if [ ! -f /usr/bin/expect ] && [ ! -f /bin/expect ];then
+        rpm -Uvh http://epel.mirror.net.in/epel/6/x86_64/epel-release-6-8.noarch.rpm
+        yum install -y expect
+        exp "/bin/expect"
+   else
+        exp "/bin/expect"
+   fi
+else
+   echo "could not find case $1"
+fi
+
+}
+
+update_conf()
+{
+   sudofile="/etc/sudoers"
+   sshdfile="/etc/ssh/sshd_config"
+   mkdir -p /home/backup
+   if [ -f $sudofile ];then
+        cp -p $sudofile /home/backup/sudoers-$now
+        sa=`grep $USER $sudofile | wc -l`
+        if [ $sa -gt 0 ];then
+             echo "$USER user already present in $sudofile - no changes required"
+             grep $USER $sudofile
+        else
+#             echo "$USER ALL=(ALL) ALL" >> $sudofile
+             echo "$USER ALL=(ALL) NOPASSWD: ALL" >> $sudofile
+             echo "updated the sudoers file successfully"
+        fi
+   else
+        echo "could not find $sudofile"
+   fi
+
+   if [ -f $sshdfile ];then
+        cp -p $sshdfile /home/backup/sshd_config-$now
+        sed -i '/ClientAliveInterval.*0/d' $sshdfile
+        echo "ClientAliveInterval 240" >> $sshdfile
+        sed -i '/PasswordAuthentication.*no/d' $sshdfile
+        sed -i '/PasswordAuthentication.*yes/d' $sshdfile
+        echo "PasswordAuthentication yes" >> $sshdfile
+        #sed -i '/PermitRootLogin.*yes/d' $sshdfile
+        #sed -i '/PermitRootLogin.*prohibit-password/d' $sshdfile
+        #echo "PermitRootLogin yes" >> $sshdfile
+        echo "updated $sshdfile Successfully -- restarting sshd service"
+        service sshd restart
+   else
+        echo "could not find $sshdfile"
+   fi
+}
+
+############### MAIN ###################
+
+USER="devops"
+GROUP="devops"
+passw="today@1234"
+
+if id -u "$USER" &>/dev/null; then 
+   echo "devops user exists no action required.."
+   exit 0
+else
+  echo "devops user missing, continue to create it.."
+fi
+
+if [ -f /etc/os-release ];then
+   osname=`grep ID /etc/os-release | egrep -v 'VERSION|LIKE|VARIANT|PLATFORM' | cut -d'=' -f2 | sed -e 's/"//' -e 's/"//'`
+   echo $osname
+else
+   echo "can not locate /etc/os-release - unable find the osname"
+   exit 8
+fi
+
+case "$osname" in
+  sles|amzn|ubuntu|centos)
+     userdel -r $USER 
+     groupdel $GROUP
+     sleep 3
+     groupadd $GROUP
+     useradd $USER -m -d /home/$USER -s /bin/bash -g $GROUP
+     setup_pass $osname
+     update_conf
+    ;;
+  *)
+    echo "could not determine the correct osname -- found $osname"
+    ;;
+esac
+exit 0