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Bash script to reset Fail2Ban - clears / truncates log file and deletes the sqlite database - stops and restarts service during this process.
#!/bin/bash
# Bash Script by https://gist.github.com/mitchellkrogza
# ************************************************************
# This script clears the log file and database of Fail2Ban
# This resets Fail2Ban to a completely clean state
# Useful to use after you have finished testing all your jails
# and completed your initial setup of Fail2Ban and are now
# putting the server into LIVE mode
# ************************************************************
# Please Set your log file and sqlite db locations
# Locations below are common on Ubuntu and Debian based systems
F2Blog="/var/log/fail2ban.log"
F2Bdb="/var/lib/fail2ban/fail2ban.sqlite3"
# Now let us clean up
echo "Stopping Fail2Ban Service"
sudo service fail2ban stop
echo "Truncating Fail2Ban Log File"
sudo truncate -s 0 $F2Blog
echo "Deleting Fail2Ban SQLite Database"
sudo rm $F2Bdb
echo "Restarting Fail2Ban Service"
sudo service fail2ban restart
echo "All Done"
@saravian
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saravian commented Jan 10, 2019

With
sudo rm $F2Bdb
the database has been locked, we fix it using
sudo rm -rf $F2Bdb

@tschifftner
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tschifftner commented Mar 10, 2021

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