Add script 'check_networking.sh'.
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214
check_networking.sh
Executable file
214
check_networking.sh
Executable file
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#!/usr/bin/env bash
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working_dir="$(dirname $(realpath $0))"
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# -------------
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# - Some Variables
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# -------------
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LOCK_DIR="/tmp/$(basename $0).LOCK"
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service_name="nginx"
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alert_email_arr="ckubu@oopen.de"
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sender_address="check_${service_name}@$(hostname -f)"
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check_string_ps="nginx: master"
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restart_needed=false
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# -------------
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# - Job is already running?
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# -------------
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# - If job already runs, stop execution..
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# -
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if mkdir "$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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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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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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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_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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fi
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}
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echo_skipped() {
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if $terminal && $LOGGING ; then
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echo -e "\033[75G[ \033[90m\033[1mskipped\033[m ]"
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fi
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}
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# -------------
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# - Check some prerequisites
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# -------------
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# - Running in a terminal?
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# -
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if [[ -t 1 ]] ; then
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terminal=true
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else
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terminal=false
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fi
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# - Systemd supported ?
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# -
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systemd=$(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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else
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fatal "Support of systemd is requirred for this script"
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fi
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# -------------
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# - Main Part of Script
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# -------------
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if $terminal ; then
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echo -e "\n Check if networking service is enabled.."
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echo -e " ========================================"
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fi
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if ! $(systemctl is-enabled networking > /dev/null 2>&1) ; then
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error "Networking service is NOT enabled"
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echononl " Enable networking service.."
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systemctl enable networking > /dev/null 2>&1
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if [[ $? -eq 0 ]] ; then
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echo_done
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else
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echo_failed
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fi
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else
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info "Networking service is enabled"
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fi
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if $terminal ; then
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echo -e "\n Check if networking service is active.."
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echo -e " ======================================="
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fi
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if ! $(systemctl is-active networking > /dev/null 2>&1) ; then
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error "Networking service is NOT active."
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echononl " (Re)start networking service.."
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systemctl restart networking > /dev/null 2>&1
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if [[ $? -eq 0 ]] ; then
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echo_done
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else
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echo_failed
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fi
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else
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info "Networking service is active"
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fi
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clean_up 0
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