22 lines
948 B
Plaintext
22 lines
948 B
Plaintext
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#!/bin/bash
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logfile='/var/log/fail2ban.log*'
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mapfile -t lines < <(grep -hioP '(\[[a-z-]+\]) ?(?:restore)? (ban|unban)' $logfile | sort | uniq -c)
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jails=($(printf -- '%s\n' "${lines[@]}" | grep -oP '\[\K[^\]]+' | sort | uniq))
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out=""
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for jail in ${jails[@]}; do
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bans=$(printf -- '%s\n' "${lines[@]}" | grep -iP "[[:digit:]]+ \[$jail\] ban" | awk '{print $1}')
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restores=$(printf -- '%s\n' "${lines[@]}" | grep -iP "[[:digit:]]+ \[$jail\] restore ban" | awk '{print $1}')
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unbans=$(printf -- '%s\n' "${lines[@]}" | grep -iP "[[:digit:]]+ \[$jail\] unban" | awk '{print $1}')
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bans=${bans:-0} # default value
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restores=${restores:-0} # default value
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unbans=${unbans:-0} # default value
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bans=$(($bans+$restores))
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diff=$(($bans-$unbans))
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out+=$(printf "$jail, %+3s bans, %+3s unbans, %+3s active" $bans $unbans $diff)"\n"
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done
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printf "\nfail2ban status (monthly):\n"
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printf "$out" | column -ts $',' | sed -e 's/^/ /'
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