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+#!/bin/sh
+# File: generate.sh
+# Location: /etc/ansible/shell/vcenter_matrix/
+# Author: bgstack15
+# Startdate: 2017-12-14
+# Title: Script that Generates the vcenter matrix
+# Purpose: Generate a list of all virtual guests and their uuids in the provided vcenters
+# History: 
+# Usage: Populate vcenters.txt with the list of vcenter hosts to check. The script will use the same credential for all the vcenters.
+# Document:
+# Reference:
+#    file descript 10  https://unix.stackexchange.com/questions/107800/using-while-loop-to-ssh-to-multiple-servers
+#    web problem with vcenter api is because of escaped characters in variables https://github.com/ansible/ansible/issues/32477
+# Improve:
+#   Accept parameters or environment variables for the input text file or even the credentials
+# Document:
+
+# Variables
+infile=/etc/ansible/shell/vcenter_matrix/vcenters.txt
+userfile=/etc/ansible/shell/vcenter_matrix/username.yml
+tmpdir="$( mktemp -d )"
+pwfile="$( TMPDIR="${tmpdir}" mktemp )"
+outputfile_yml=/etc/ansible/shell/vcenter_matrix/vcenter_matrix.yml
+outputfile_csv=/etc/ansible/shell/vcenter_matrix/vcenter_matrix.csv
+
+# Prompt for some variables
+printf "%s" 'vc_username (DOMAIN\\username): '
+read -r vc_username
+printf "%s" 'vc_password: '
+read -s vc_password
+printf '\n'
+
+# Functions
+clean_generate() {
+   /bin/rm -fr "${tmpdir:-NOTHINGTODELETE}" 1>/dev/null 2&1
+}
+trap "clean_generate ; trap '' {0..20} ; exit 0 ;" 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
+
+# Prepare vault file
+echo -e "vc_username: ${vc_username}" > "${userfile}"
+echo "vc_password: ${vc_password}" >> "${userfile}"
+echo "$( pwmake 300 )" > "${pwfile}"
+ansible-vault encrypt "${userfile}" --vault-password-file "${pwfile}" 2>&1 | grep -viE 'encryption successful'
+unset vc_username vc_password
+
+# initialize files
+/bin/rm -f "${outputfile_yml}" "${outputfile_csv}"
+touch "${outputfile_yml}" ; chmod 0664 "${outputfile_yml}" ; chgrp ansible "${outputfile_yml}"
+touch "${outputfile_csv}" ; chmod 0664 "${outputfile_csv}" ; chgrp ansible "${outputfile_csv}"
+echo "vcenter_matrix:" > "${outputfile_yml}"
+
+# iterate over each vcenter
+__func() {
+local tempfile="$( TMPDIR="${tmpdir}" mktemp )"
+sed -r -e 's/\#.*$//;' -e '/^\s*$/d;' -e 's/\s*//g;' < "${infile}" > "${tempfile}"
+while read -u10 line ;
+do
+   echo "" | ansible-playbook -l $( hostname -s ) /etc/ansible/shell/vcenter_matrix/generate.yml -e "vc_hostname=${line}" -e "outputfile_yml=${outputfile_yml}" -e "outputfile_csv=${outputfile_csv}" --vault-password-file "${pwfile}" -v
+done 10< "${tempfile}"
+}
+time __func