Monitoring of remote symfony installations

The most flexible (but also extensive) solution would probably be a http://www.nagios.org - Installation.

Some Nagios plugins for log file checking/filtering:

• Fetchlog (http://fetchlog.sourceforge.net, can also be used standalone)
• Check_logfiles(http://www.consol.com/opensource/nagios/check-logfiles)

Since we most likely won't be able to check remote hosts directly (firewall, ...), we should use passive checks.

Some detailed information: http://www.packtpub.com/article/passive-checks-nsca-nagios-service-check-acceptor