cp -vip --sparse=always /var/lib/fail2ban/fail2ban.sqlite3 /scratch/root/fail2ban.sqlite3.sparse
sqlite3 fail2ban.sqlite3
sqlite3 $PWD/fail2ban.sqlite3 "VACUUM ;"
TMPDIR=/scratch/tmp/ sqlite3 $PWD/fail2ban.sqlite3 "VACUUM ;"

systemctl stop fail2ban
cd /var/lib/fail2ban
TMPDIR=/scratch/tmp/ sqlite3 $PWD/fail2ban.sqlite3
  SELECT COUNT(*) FROM bans WHERE timeofban < STRFTIME('%s','2022-03-01');
  DELETE FROM bans WHERE timeofban < STRFTIME('%s','2022-03-01') LIMIT 10000;
  DELETE FROM bans WHERE timeofban < STRFTIME('%s','2022-03-01') LIMIT 10000;
  DELETE FROM bans WHERE timeofban < STRFTIME('%s','2022-03-01') LIMIT 35000;
  DELETE FROM bans WHERE timeofban < STRFTIME('%s','2022-03-01') ;
ls -lah fail2ban.sqlite3
TMPDIR=/scratch/tmp/ sqlite3 $PWD/fail2ban.sqlite3 "VACUUM ;" && systemctl start fail2ban
ls -lah fail2ban.sqlite3

vi /etc/fail2ban/jail.d/jail.local
systemctl reload fail2ban

/etc/fail2ban/jail.d/jail.local

ignoreip = 127.0.0.1 10.0.0.0/8 192.168.0.0/16

/etc/fail2ban/jail.d/jail.local

[DEFAULT]
bantime = 1h
maxretry = 3
[dovecot]
bantime = 24h