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197 lines
5.8 KiB
197 lines
5.8 KiB
#!/bin/bash
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# Enter your zipcode here for local weather.
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zipcode=20001
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# Add the services you want to monitor here as an array
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# e.g. ('apache2' 'gitea' 'postfix')
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servicelist=('apache2' 'gitea' 'postfix')
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# Disks to check (pls only do one for now)
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disks=('/dev/sda1')
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# Colors are nice
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blk=$(tput setaf 0)
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red=$(tput setaf 1)
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grn=$(tput setaf 2)
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ylw=$(tput setaf 3)
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blu=$(tput setaf 4)
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cyn=$(tput setaf 6)
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wht=$(tput setaf 7)
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und=$(tput smul)
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bld=$(tput bold)
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# Uncoloring is important
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rst=$(tput sgr0)
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# Get the number of columns and rows to center the
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# last updated time on the bottom of the window.
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cols=$(tput cols)
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rows=$(tput lines)
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# trap ctrl-c and call ctrl_c()
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# https://rimuhosting.com/knowledgebase/linux/misc/trapping-ctrl-c-in-bash
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trap ctrl_c INT
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function ctrl_c() {
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#clear
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tput cnorm
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echo "${rst}${red}CTRL+C Detected, exiting.${rst}"
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exit
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}
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function dothething() {
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# Grab the size of the window again as the window size
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# may have changed since the script was started.
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cols=$(tput cols)
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rows=$(tput lines)
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clear
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updatedstring="Last updated: `date \"+%F %X\"`"
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# Sometimes this may not complete due to wttr.in running
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# out of available queries to their weather provider.
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# This should only last for a day or so.
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curl wttr.in/${zipcode}?1QnuFA
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# Make sure the updated line is at the bottom of the screen
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down=$rows
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# Do some math to center the string horizontally
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let over="$cols/2-${#updatedstring}/2"
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# Move the cursor over to the correct starting location
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tput cup $down $over
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# Print the last time the weather was updated
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echo -n "${rst}${ylw}${updatedstring}${rst}"
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# Reset the cursor back to 0,0
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tput cup 0 0
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}
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# Check to see if we need to reboot the server
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function rebootcheck() {
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cols=$(tput cols)
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reboottext_notneeded=" No reboot required"
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reboottext_needed="A reboot is required"
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if [ -f /var/run/reboot-required ]; then
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# Reboot required
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let over="$cols-${#reboottext_needed}"
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tput cup 0 $over
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echo -en "${rst}${bld}${red}${reboottext_needed}${rst}"
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else
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# No reboot needed
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let over="$cols-${#reboottext_notneeded}-1"
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tput cup 0 $over
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echo -en "${rst}${grn}${reboottext_notneeded}${rst}"
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fi
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}
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# Disk space check
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function checkdisks() {
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_df=`df -h | tr -s [:blank:] | egrep "^${disks[0]} "`
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disk=`echo $_df | cut -d' ' -f1` # /dev/sda1
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size=`echo $_df | cut -d' ' -f2` # 20G
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used=`echo $_df | cut -d' ' -f3` # 16G
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left=`echo $_df | cut -d' ' -f4` # 6.1G
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perc=`echo $_df | cut -d' ' -f5` # 69%
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mntp=`echo $_df | cut -d' ' -f6` # /
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rper=`echo $perc | tr -d "%"` # 69
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capvalues=(85 90 95)
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capcolors=("${ylw}" "${bld}${red}" "${red}")
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capcolor=""
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if [ $rper -lt ${capvalues[0]} ]; then
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capcolor="${wht}"
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elif [ $rper -ge ${capvalues[0]} ] && [ $rper -lt ${capvalues[1]} ]; then
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capcolor="${capcolors[0]}"
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elif [ $rper -ge ${capvalues[1]} ] && [ $rper -lt ${capvalues[2]} ]; then
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capcolor="${capcolors[1]}"
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elif [ $rper -ge ${capvalues[2]} ]; then
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capcolor="${capcolors[2]}"
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fi
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title="Disk usage"
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usage="${used}/${size}"
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cols=$(tput cols)
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let overt="$cols-${#title}-1"
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let overd="$cols-${#disk}-1"
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let overu="$cols-${#usage}-1"
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tput cup 2 $overt
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echo -en "${rst}${title}${rst}"
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tput cup 3 $overd
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echo -en "${rst}${disk}${rst}"
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tput cup 4 $overu
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echo -en "${rst}${capcolor}${usage}${rst}"
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}
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# This be where we check the services
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function servicecheck(){
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# If we're not monitoring any services, return
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[ ${#servicelist[@]} -eq 0 ] && return
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# These are the allowed rows
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# TODO? determine lines from after weather print?
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servicerow=(15 16 17 18 19)
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# These are the allowed columns
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# TODO? allow column count instead of static assignments?
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servicecol=(1 25 50)
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# Loop over the number of services that we're monitoring
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# https://askubuntu.com/a/1340735
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for index in $(seq 0 $((${#servicelist[@]}-1))); do
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# Determine the position of the current service
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# we go across and then down
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# TODO? allow for variable columns?
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let echocol="${servicecol[${index}%3]}"
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let echorow="${servicerow[${index}/3]}"
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# Put our cursor where we can print
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tput cup $echorow $echocol
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# Clear the variables we use
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#unset echocol echorow
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# Do the actual service check. is-active returns
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# active or inactive. Easy peasy
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servicestatus=`systemctl is-active ${servicelist[${index}]}`
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# Print out the status, green with a dot (\U25CF) if it's online,
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# a red with a square (\U25A0) if it's stopped, or a yellow
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# triangle (\U25BA) if it's starting.
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case "${servicestatus}" in
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active) echo -en "${grn}\U25CF ${servicelist[${index}]}${rst}";;
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activating) echo -en "${ylw}\U25BA ${servicelist[${index}]}${rst}";;
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inactive) echo -en "${red}\U25A0 ${servicelist[${index}]}${rst}";;
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failed) echo -en "${red}\U25A0 ${servicelist[${index}]}${rst}";;
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esac
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#[ "${servicestatus}" == "active" ] && echo -en "${grn}\U25CF ${servicelist[${index}]}${rst}" || [ "${servicestatus}" == "activating" ] && echo -en "${ylw}\U25BA ${servicelist[${index}]}${rst}" || echo -en "${red}\U25A0 ${servicelist[${index}]}${rst}"
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done
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tput cup 0 0
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}
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# Clear the screen and let's get going
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clear
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# Make the cursor invisible for the terminal
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tput civis
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# Programmers are great at naming things
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dothething
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# Check if a reboot is needed
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rebootcheck
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# Check the disk capacities
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checkdisks
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# Loop forever. Use ctrl+c to exit.
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while true; do
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# We want to make sure we only check once per hour
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# in order to not overwhelm the wttr.in service.
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# Octal fix: https://stackoverflow.com/a/24777667
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if [ `date +%M` -eq "00" ]; then
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# Don't forget to check the seconds or it'll run
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# the command every second of the 0th minute.
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if [ `date +%S` -eq "00" ]; then
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dothething
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# Also doing these once per hour because more seems overkill
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rebootcheck
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checkdisks
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fi
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fi
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# I don't think checking every second is a problem... yet...
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servicecheck
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# Sleep for a second so we're not hammering the system
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# with date checks.
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sleep 1
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done
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