I have applied couple of options like Nagios [which lead to problem after installation]-- Apache went irresponsive with lots of segmentation faults
child pid 32507 exit signal Segmentation fault (11) yes we can change the MPM nature to override but I am afraid of getting into another problem to overcome this.
what I need to monitor is:
is server up [pings are not allowed in my server DC], so i cannot trace by applying ping from another server to the monitoring server. what other option we can have?
Apache httpd and Tomcat working fine
MySQL db is working fine
Resource utilization [CPU, Memory] of above mentioned processes
Alerts like send email to admins.
what is industry best practice to Monitor the application servers.