preinstal.sh

#!/usr/bin/env bash
#
#

# TODO: hostname

info() {
    echo -e $( date "+[ %T.%3N ] ") "\033[01;32m[INF]\033[00m ${@}"
}

error() {
    echo -e $( date "+[ %T.%3N ] ") "\033[01;31m[ERR]\033[00m ${@} -> \033[01;31mEXIT!\033[00m"
    exit 1
}

info '############## START ############'
info 'make sure a script is run as root'
if [[ "${UID}" -ne 0 ]]; then
    error "${0} must be run as root"
fi

info 'validate architecture'
if [[ $( uname -i ) != 'x86_64' ]]; then
    error 'x86_64 architecture require'
fi

info 'update system'
yum -y update >&/dev/null
if [[ "${?}" -ne 0 ]]; then
    error "can't update, check your network"
fi

info 'install Verica basic dependencies'
yum -y install bash sudo bc openssh ntp netstat yum-utils >&/dev/null

info 'check shell, all shell scripts must run under the BASH shell'
if [[ "${SHELL}" != '/bin/bash' ]]; then
    error 'all shell scripts must run under the BASH shell'
fi


info '############## DONE! ############'
exit 0