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System Monitoring
Realizing that up-time is of extreme
importance to mission critical sites, we have built a number of system
monitoring scripts into the operating system of each server on our network.
These scripts are designed to monitor, report, and fix various system processes
according to a set regiment of criteria. With the professionalism and expertise
of our staff, operating a secure, stable, and reliable web server has never been
easier.
This list describes some of the proactive monitoring that is constantly
performed on our servers:
Machine Uptime Monitor
We have scripts that ping the servers
every couple of minutes to make sure that the boxes are accessible from within
our network as well as from outside our network. If the server cannot be pinged,
the script will page our system engineers immediately. This way, we are always
informed about the performance of our servers and network, ensuring your site
stays up and running.
Web Serving Monitor
One of our tools monitors the Apache web server on a one minute interval to
ensure that it is up and serving pages. Every minute, we request a page from the
http daemon. If it does not respond, our script will flag it and test it next
time through. After 3 attempts the tool executes a reload on the http daemon.
Then a minute later it will request a page again. If there is still no response,
after one more attempt, a page is sent to our support to manually look into the
situation. This script works to make sure that our clients' web sites are
serving pages 24/7.
Disk Space Monitor
Our system also monitors disk space usage through a script that checks the
free space on our server hard drives. If the available space reaches a
dangerously low level, our staff is paged. So, for example, if the log file(s)
begin to grow at an alarming rate, we would be able to prevent the log(s) from
filling up the drive and and possibly bringing the server and your web site
down.
Memory Monitor
This monitoring tool will make sure that no process takes up more than a
certain percentage of your machines’ available memory. If a process consumes
more than the maximum allotment, it will be temporarily killed off and the
situation will be reported to our staff. This monitor, which is especially
helpful when hosting virtual domains, is another example of our up-time
monitoring tools.
Port Monitor
We actively monitor all commonly used ports, not only to make sure that they
are open, but to verify that they are actually passing data. The script does
this by asking for data. if the port does not respond, it will be restarted by
the monitoring tool.
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