Monitoring usage and status

Question

Hello, Can anyone suggest a good service or tool for monitoring the following on a webfaction server:

Memory usage (ideally on a sub-minute basis)
Processor usage (also on a sub-minute basis)
Whether or not the website is active (i.e., a watchdog service)
Number of hits (would be great it if integrated with Google Analytics)

Also, I'd like to be able to have e-mails or text messages sent in the case the server goes down or exceeds a certain memory or processor threshold.

Thanks in advance for your help.

Answer 1

I don't know of a single tool that will do all of that.

You can get your RAM usage with the following command:

ps -u $LOGNAME -o rss,command | grep -v peruser | awk '{sum+=$1} END {print sum/1024}'

You can get your total CPU usage with:

ps -u $LOGNAME -o pcpu | awk '{sum+=$1} END {print sum}'

If you want to be notified when either of those exceeds a certain value, then just write a script to do that for you and run that script via cron. Note that cron jobs can be run once per minute at most.

If you want something to notify when your site goes down, then I recommend an external monitoring service such as Pingdom.

If you want something that measures traffic and integrates with Google Analytics, that leaves me wondering why you wouldn't simply use Google Analytics itself.

Answer 2

0	Checkout www.verelo.com for sub-minute website monitoring. permanent link answered 02 Mar '12, 22:40 Andrew McGrath 1 accept rate: 0%

Monitoring usage and status

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