417 lines
8.8 KiB
Bash
Executable File
417 lines
8.8 KiB
Bash
Executable File
#!/usr/bin/env bash
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# ----------
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# - Some script variables (Default values other variables see below)
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# ----------
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script_name="$(basename $(realpath $0))"
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working_dir="$(dirname $(realpath $0))"
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conf_file="${working_dir}/conf/${script_name%%.*}.conf"
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LOCK_DIR="/tmp/${script_name%%.*}.LOCK"
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log_file="${LOCK_DIR}/${script_name%%.*}.log"
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# ----------
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# Base Function(s)
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# ----------
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usage() {
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[[ -n "$1" ]] && error "$1"
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[[ $terminal ]] && echo -e "
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\033[1mUsage:\033[m
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$(basename $0) [-c <integer>}
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\033[1mDescription\033[m
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Script wwarns if disk usage exceeds a given or default value (percent)
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\033[1mOptions\033[m
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-c <integer)
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a critical value in percent. if disc usage reaches this value, a warn e-mail
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to given e-mail adresse(s) will be send.
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Default e-mail adresse(s):
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${DEFAULT_ALERT_EMAIL_ADDRESSES}
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-h
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Prints this help.
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\033[1mFiles\033[m
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$conf_file: Configuration file
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\033[1mExample:\033[m
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warn if disc usage exceeds 80%
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$(basename $0) -c 80
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"
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clean_up 1
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}
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clean_up() {
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# Perform program exit housekeeping
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rm -rf "$LOCK_DIR"
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blank_line
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exit $1
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}
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echononl(){
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if $terminal ; then
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echo X\\c > /tmp/shprompt$$
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if [ `wc -c /tmp/shprompt$$ | awk '{print $1}'` -eq 1 ]; then
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echo -e -n " $*\\c" 1>&2
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else
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echo -e -n " $*" 1>&2
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fi
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rm /tmp/shprompt$$
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fi
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}
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fatal(){
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echo ""
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if $terminal ; then
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echo -e " [ \033[31m\033[1mFatal\033[m ]: $*"
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echo ""
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echo -e " \033[31m\033[1mScript was interupted\033[m!"
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else
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echo " [ Fatal ]: $*"
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echo ""
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echo " Script was terminated...."
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fi
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echo ""
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clean_up 1
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}
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error (){
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echo ""
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if $terminal ; then
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echo -e " [ \033[31m\033[1mError\033[m ]: $*"
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else
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echo "[ Error ]: $*"
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fi
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echo ""
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}
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warn (){
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echo ""
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if $terminal ; then
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echo -e " [ \033[33m\033[1mWarning\033[m ]: $*"
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else
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echo "[ Warning ]: $*"
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fi
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echo ""
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}
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warn_only_terminal () {
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if $terminal ; then
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echo ""
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echo -e " [ \033[33m\033[1mWarning\033[m ]: $*"
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echo ""
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fi
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}
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info (){
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if $terminal ; then
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echo ""
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echo -e " [ \033[32m\033[1mInfo\033[m ] $*"
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echo ""
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fi
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}
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ok (){
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if $terminal ; then
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echo ""
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echo -e " [ \033[32m\033[1mOk\033[m ] $*"
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echo ""
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fi
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}
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echo_done() {
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if $terminal ; then
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echo -e "\033[75G[ \033[32mdone\033[m ]"
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fi
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}
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echo_ok() {
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if $terminal ; then
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echo -e "\033[75G[ \033[32mok\033[m ]"
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fi
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}
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echo_warn() {
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if $terminal ; then
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echo -e "\033[75G[ \033[33mwarn\033[m ]"
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fi
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}
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echo_failed(){
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if $terminal ; then
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echo -e "\033[75G[ \033[1;31mfailed\033[m ]"
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fi
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}
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echo_skipped() {
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if $terminal ; then
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echo -e "\033[75G[ \033[90m\033[1mskipped\033[m ]"
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fi
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}
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echo_wait(){
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if $terminal ; then
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echo -en "\033[75G[ \033[5m\033[1m...\033[m ]"
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fi
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}
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trim() {
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local var="$*"
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var="${var#"${var%%[![:space:]]*}"}" # remove leading whitespace characters
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var="${var%"${var##*[![:space:]]}"}" # remove trailing whitespace characters
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echo -n "$var"
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}
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blank_line() {
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if $terminal ; then
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echo ""
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fi
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}
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is_number() {
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return $(test ! -z "${1##*[!0-9]*}" > /dev/null 2>&1);
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# - also possible
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# -
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i#[[ ! -z "${1##*[!0-9]*}" ]] && return 0 || return 1
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#retuon $([[ ! -z "${1##*[!0-9]*}" ]])
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}
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# ----------
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# - Some checks ..
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# ----------
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# - Running in a terminal?
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# -
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if [[ -t 1 ]] ; then
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terminal=true
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else
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terminal=false
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fi
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terminal=false
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# ==========
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# - Begin Main Script
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# ==========
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# ----------
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# - Headline
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# ----------
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if $terminal ; then
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clear
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echo ""
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echo -e "\033[1m----------\033[m"
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echo -e "\033[32m\033[1mRunning script \033[m\033[1m$script_name\033[32m .. \033[m"
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echo -e "\033[1m----------\033[m"
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fi
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# ----------
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# Read Configurations from $conf_file
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# ----------
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# - Give your default values here
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# -
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DEFAULT_ADMIN_EMAIL="argus@oopen.de"
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DEFAULT_COMPANY="O.OPEN"
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DEFAULT_CONTENT_TYPE='Content-Type: text/plain;\n charset="utf-8"'
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DEFAULT_SENDER_ADDRESS="${script_name%%.*}@$(hostname -f)"
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DEFAULT_ALERT_EMAIL_ADDRESSES="ckubu@oopen.de"
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DEFAULT_WARN_VALUE=85%
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# - Print help?
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# -
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if [[ "$(trim $*)" = "--help" ]] || [[ "$(trim $*)" = "-help" ]] || [[ "$(trim $*)" = "help" ]] ; then
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usage
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fi
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if [[ -f "$conf_file" ]]; then
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source "$conf_file"
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else
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warn_only_terminal "No configuration file '$conf_file' present.\n
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Loading default values.."
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fi
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[[ -n "${WARN_VALUE}" ]] || WARN_VALUE="${DEFAULT_WARN_VALUE}"
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[[ -n "${ADMIN_EMAIL}" ]] || ADMIN_EMAIL="${DEFAULT_ADMIN_EMAIL}"
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[[ -n "${COMPANY}" ]] || COMPANY="${DEFAULT_COMPANY}"
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[[ -n "${ALERT_EMAIL_ADDRESSES}" ]] || ALERT_EMAIL_ADDRESSES="${DEFAULT_ALERT_EMAIL_ADDRESSES}"
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[[ -n "${CONTENT_TYPE}" ]] || CONTENT_TYPE="${DEFAULT_CONTENT_TYPE}"
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[[ -n "${SENDER_ADDRESS}" ]] || SENDER_ADDRESS="${DEFAULT_SENDER_ADDRESS}"
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WARN_VALUE="${WARN_VALUE%\%}"
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if ! $(is_number ${WARN_VALUE}) ; then
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fatal "Given value for \033[1mWARN_VALUE\033[m (\033[1m${WARN_VALUE}\033[m) isn't a number!"
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fi
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SUBJECT="[ Warning ] Hard disk storage on $(hostname -f) exceeds ${WARN_VALUE}%"
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# ----------
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# - Read commandline parameter
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# ----------
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while getopts c:h opt ; do
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case $opt in
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c) WARN_VALUE="${OPTARG}"
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WARN_VALUE="${WARN_VALUE%\%}"
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;;
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h) usage
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;;
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\?) usage ;;
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esac
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done
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# - Commandline parameter overwrites those given at configuration file
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# -
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if ! $(is_number ${WARN_VALUE}) ; then
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fatal "Given value for \033[1mWARN_VALUE\033[m at commandline option \033[1m-c\033[m (\033[1m${WARN_VALUE}\033[m) isn't a number!"
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fi
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if [[ -n "$(trim ${ALERT_EMAIL_ADDRESSES})" ]] ; then
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for _email in $ALERT_EMAIL_ADDRESSES ; do
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alert_email_arr+=("$_email")
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done
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fi
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# ----------
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# - Jobhandling
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# ----------
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# - If job already runs, stop execution..
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# -
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if mkdir "$LOCK_DIR" 2> /dev/null ; then
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## - Remove lockdir when the script finishes, or when it receives a signal
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trap "clean_up 1" SIGHUP SIGINT SIGTERM
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else
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datum="$(date +"%d.%m.%Y %H:%M")"
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msg="[ Error ]: A previos instance of \"`basename $0`\" seems already be running.\n\n Exiting now.."
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echo ""
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echo "[ Error ]: A previos instance of that script \"`basename $0`\" seems already be running."
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echo ""
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echo -e " Exiting now.."
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echo ""
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echo -e "To:${ADMIN_EMAIL}\n${CONTENT_TYPE}\nSubject:Error cronjob `basename $0` -- $datum\n${msg}\n" \
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| sendmail -F "Error `hostname -f`" -f ${SENDER_ADDRESS} ${ADMIN_EMAIL}
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exit 1
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fi
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blank_line
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msg=""
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found=false
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while IFS='' read -r _line || [[ -n $_line ]] ; do
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read -ra _addr <<< "$_line"
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_device="${_addr[1]}"
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_dir="${_addr[2]}"
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_tmp_percent="${_addr[0]}"
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declare -i _percent="${_tmp_percent%\%}"
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if [[ ${_percent} -gt ${WARN_VALUE} ]] ; then
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#echo -e "\033[3G${_device}\033[15G -> ${_dir}\033[25G ${_percent}%"
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if [[ -z "${msg}" ]]; then
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msg="\n The hard disk space on Device '${_device}' mounted at '${_dir}' is '${_percent}'% full!\n"
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else
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msg+="\n The hard disk space on Device '${_device}' mounted at '${_dir}' is '${_percent}'% full!\n"
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fi
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if ! ${found} && ${terminal} ; then
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echo -e " Host: \033[1m$(hostname -f)\033[m"
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fi
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warn_only_terminal "The hard disk space on Device \033[1m${_device}\033[m mounted at \033[1m${_dir}\033[m is \033[1;31m${_percent}% full!\033[m"
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found=true
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fi
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done < <(df -H | grep -vE '^Dateisystem|Filesystem|tmpfs|cdrom|loop|udev' | awk '{ print $5 " " $1 " " $6 }')
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if $found ; then
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if $(which lxc-ls > /dev/null) ; then
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_guest_machines="$(lxc-ls)"
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if [[ ${#_guest_machines} -gt 0 ]]; then
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if ${terminal}; then
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echo -e " LX Guest Systems:"
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fi
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msg_guests="LX Guest Systems:"
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for _name in ${_guest_machines} ; do
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_state="$(lxc-info -n ${_name} | grep -i 'State:' | awk '{print$2}')"
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msg_guests="${msg_guests}\n (${_state}:) ${_name}"
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if ${terminal}; then
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echo -e " (${_state}:) ${_name}"
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fi
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done
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fi # if [[ ${#_guest_machines} -gt 0 ]]
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fi # if $(which lxc-ls > /dev/null)
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SUBJECT="[ Warning ] Hard disk storage on $(hostname -f) exceeds ${WARN_VALUE}%"
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SUBJECT_UTF8="$(echo "${SUBJECT}" | iconv -t UTF8)"
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SUBJECT_UTF8_ENCODED="=?utf-8?B?$(echo ${SUBJECT_UTF8} | base64 --wrap=0)?="
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for _email in ${alert_email_arr[@]} ; do
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echo -e "To:${_email}\n${CONTENT_TYPE}\nSubject:${SUBJECT_UTF8_ENCODED}\n\nHost: $(hostname -f)\n${msg}\n${msg_guests}" | /usr/sbin/sendmail -F "${COMPANY} -- hard disk usage" -f ${SENDER_ADDRESS} ${_email}
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done
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else
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info "Harddisk usage on host \033[1m$(hostname -f)\033[m is fine."
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fi
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clean_up 0
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