• whois
• htop
• iotop (monitorize disk IO)
• iostat (sysstat – monitorize disk IO)
• fail2ban
  • sendmail
  • iptables-persistent
• nginx
• mysql
• php-fpm
  • php5-mysql
  • php5-gd
  • php5-json
  • php5-curl
  • php5-mcrypt
  • libssh2-php
  • php5-cli
  • allow short_open_tag = On on /etc/php5/fpm/php.ini
• curl
• vnstat
• vnstati
• at
  • edit /etc/at.allow and /etc/at.deny to allow/deny specific users

– too much IO stats? IO is important!, if we are serving thousands of files per hour.

• https://www.digitalocean.com/community/tutorials/how-to-install-linux-nginx-mysql-php-lemp-stack-on-ubuntu-14-04
• https://www.digitalocean.com/community/tutorials/how-to-optimize-nginx-configuration
  
• https://www.digitalocean.com/community/tutorials/how-to-configure-logging-and-log-rotation-in-nginx-on-an-ubuntu-vps
• https://www.digitalocean.com/community/tutorials/how-to-install-wordpress-with-nginx-on-ubuntu-14-04