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fail2ban 66 security 37 system 25 hardening 14 failover 12 yum 10 apt 9 ssh 8 automatic 8 updates 8 dnf 8 postgresql 6 debian 6 iptables 6 availability 6 clustering 6 patroni 5 firewall 5 centos 5 networking 5 linux 5 development 4 package 4 keepalived 3 Ubuntu 3 installer 3 mail 3 network 3 postinstalltweaks 2 ufw 2 redhat 2 failure 2 hetzner 2 asterisk 1 pacemaker 1 floatingip 1 dmz 1 mysql 1 server 1 sysadmin 1