Add script 'check_local_webservice.sh'.
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291
check_local_webservice.sh
Executable file
291
check_local_webservice.sh
Executable file
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#!/usr/bin/env bash
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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/${script_name%%.*}.conf"
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LOCK_DIR="/tmp/check_local_webservice.LOCK"
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RESTART_CHECK_FILE="/tmp/${script_name%%.*}.NEED-RESTART"
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declare -a alert_email_arr
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# -------------
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# --- Read Configurations from $conf_file
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# -------------
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if [[ ! -f "$conf_file" ]]; then
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echo ""
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echo -e " [ Fatal ] Configuration file '$(basename ${conf_file})' not found!"
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echo ""
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echo -e "\tScript terminated.."
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echo ""
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exit 1
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else
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source "$conf_file"
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fi
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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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[[ -n "$sender_address" ]] || sender_address="check_local_webservice@$(hostname -f)"
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[[ -n "$content_type" ]] || content_type='Content-Type: text/plain;\n charset="utf-8"'
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[[ -n "$TIME_OUT" ]] || TIME_OUT=30
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TIME_OUT_MAX="$(expr ${TIME_OUT} + 5)"
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# -------------
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# - Job is already running?
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# -------------
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# - If job already runs, stop execution..
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# -
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if mkdir "$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 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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for _email in ${alert_email_arr[@]} ; do
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echo -e "To:${_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 $_email
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done
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exit 1
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fi
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# -------------
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# --- Some functions
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# -------------
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clean_up() {
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# Perform program exit housekeeping
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rm -rf "$LOCK_DIR"
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if $LOGGING ; then
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echo ""
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fi
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exit $1
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}
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echononl(){
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if $terminal && $LOGGING ; 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[1mError\033[m ]: $*"
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echo ""
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echo -e "\t\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 "\t[ \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 "\t[ \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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echo_done() {
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if $terminal && $LOGGING ; then
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echo -e "\033[75G[ \033[32mdone\033[m ]"
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else
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if $LOGGING ; then
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echo " [ done ]"
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fi
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fi
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}
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echo_ok() {
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if $terminal && $LOGGING ; then
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echo -e "\033[75G[ \033[32mok\033[m ]"
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else
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if $LOGGING ; then
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echo " [ ok ]"
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fi
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fi
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}
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echo_failed(){
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if $terminal && $LOGGING ; then
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echo -e "\033[75G[ \033[1;31mfailed\033[m ]"
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else
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if $LOGGING ; then
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echo " [ failed ]"
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fi
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fi
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}
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echo_skipped() {
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if $terminal && $LOGGING ; then
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echo -e "\033[75G[ \033[33m\033[1mskipped\033[m ]"
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else
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if $LOGGING ; then
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echo " [ skipped ]"
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fi
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fi
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}
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reboot_system() {
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content_type='Content-Type: text/plain;\n charset="utf-8"'
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datum="$(date +"%d.%m.%Y")"
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from_address="root@$(hostname --long)"
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for _email in ${alert_email_arr[@]} ; do
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echo -e "To:${_email}\n${content_type}\nSubject:[Fatal: Local Webservice NOT rsponding] - Reboot System\n$*" \
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| sendmail -F "Error `hostname -f`" -f $sender_address $_email
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done
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sleep 10
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/sbin/reboot -f
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}
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# -------------
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# --- Check some prerequisites
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# -------------
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# - Running in a terminal?
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# -
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if [[ -t 1 ]] ; then
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terminal=true
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LOGGING=true
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else
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terminal=false
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LOGGING=false
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fi
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# - Systemd supported ?
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# -
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systemd=$(which systemd)
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systemctl=$(which systemctl)
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systemd_supported=false
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if [[ -n "$systemd" ]] && [[ -n "$systemctl" ]] ; then
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systemd_supported=true
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fi
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if $LOGGING ; then
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echo ""
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fi
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if [[ -n "$LOCAL_WEBSITES_TO_CHECK" ]] ; then
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for _site in $LOCAL_WEBSITES_TO_CHECK ; do
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echononl " Check site \033[1m$_site\033[m .."
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declare -i i=0
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while [[ $i -lt 3 ]] ; do
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response="$(curl --max-time $TIME_OUT_MAX --connect-timeout $TIME_OUT \
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-I -k -L --write-out %{http_code} --silent --output /dev/null $_site 2> ${LOCK_DIR}/err.msg)"
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# 200 - OK
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# 401 - Unauthorized (response of roundcube webmailer (since version 1.4)
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if [[ "$response" -eq 200 ]] || [[ "$response" -eq 401 ]]; then
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echo_ok
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if [[ -f "$RESTART_CHECK_FILE" ]] ; then
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rm -f "$RESTART_CHECK_FILE"
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fi
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clean_up 0
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fi
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sleep 2
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((i++))
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done
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echo_failed
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done
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else
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warn "No Website to check given (empty var 'LOCAL_WEBSITES_TO_CHECK')"
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clean_up 10
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fi
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if [[ ! -f "$RESTART_CHECK_FILE" ]]; then
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touch "$RESTART_CHECK_FILE"
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error "The local webservice seems to be down. Some Websites do not respond as expected:"
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err_msg="\n[ Error ]: The local webservice seems to be down. Some Websites do not respond as expected::\n\n"
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for _site in $LOCAL_WEBSITES_TO_CHECK ; do
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err_msg+=" $_site\n"
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if $LOGGING ; then
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echo -e "\t \033[1m$_site\033[m"
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else
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echo " $_site"
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fi
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done
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datum="$(date +"%d.%m.%Y %H:%M")"
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for _email in ${alert_email_arr[@]} ; do
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echo -e "To:${_email}\n${content_type}\nSubject:[Warn: Local Webservice NOT rsponding] - Do nothing for now\n$err_msg" \
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| sendmail -F "Error `hostname -f`" -f $sender_address $_email
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done
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clean_up 20
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else
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rm -f "$RESTART_CHECK_FILE"
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reboot_system "The local web service is still down - a system restart is triggered."
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fi
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if $LOGGING ; then
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echo ""
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fi
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clean_up 0
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58
conf/check_local_webservice.conf.sample
Normal file
58
conf/check_local_webservice.conf.sample
Normal file
@ -0,0 +1,58 @@
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#---------------------------------------
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#-----------------------------
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# Settings for script check_local_webservice.sh
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#-----------------------------
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#---------------------------------------
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# - LOCAL_WEBSITES_TO_CHECK
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# -
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# - Contains a list of websites, whichn will be checked
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# -
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# - blank seperated list of URLs
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# -
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# - Example: LOCAL_WEBSITES_TO_CHECK="
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# - https://https://kontext3.warenform.de
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# - www.die-linke-europa.de
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# - "
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# -
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LOCAL_WEBSITES_TO_CHECK=""
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# - TIME_OUT
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# -
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# - Timeout for curl request of each website
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# -
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# - Defaults to: TIME_OUT=30
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# -
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#TIME_OUT=30
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# ---
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# - E-Mail settings for sending script messages
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# ---
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# - company
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# -
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# - Example: company="O.OPEN"
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# -
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company=""
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# - sender_address
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# -
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# - Defaults to: sender_address="root@$(hostname -f)"
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# -
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#sender_address="check_websites@$(hostname -f)"
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# - content_type
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# -
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# - Defaults to: content_type='Content-Type: text/plain;\n charset="utf-8"'
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# -
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#content_type='Content-Type: text/plain;\n charset="utf-8"'
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# - alert_email_addresses
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# -
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# - blank separated list of e-mail addresses
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#
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# - Example: alert_email_addresses="ckubu@oopen.de axel@warenform.net"
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# -
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alert_email_addresses=""
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