Display graphs for system resource utilization

[prashantc]

Hi all,

I have a SSH access to some linux servers, is it possible that I can get some graphical report for system utilization (CPU, memory and disk space) for a given time range.

I dont have any graphical access to the system.

Currently I am fetching the records using "sar -r" command , pasting them in a excel sheet to generate the reports.

Please suggest of there is any easier alternative in linux shell

PrashantC

[Irithori]

Usually a monitoring system based on RRD is used for this.
Munin - Trac is quite simple
Nagios - The Industry Standard in IT Infrastructure Monitoring well known and supported
I use green : Xymon - Status @ Thu Feb 03 14:20:36 2011

There are dozens more.

However, the display is usually done via a website.
Can you maybe run an apache on a monitoring host?

If there is no connection but ssh, then you could run apache on localhost and tunnel via ssh from your client to that monitoring machine.

[prashantc]

Thanks for a quick reply


If there is no connection but ssh, then you could run apache on localhost and tunnel via ssh from your client to that machine.

could you please elaborate more on this.. .or a link may help me

Is it anyway possible on getting reports on ssh ?

[Irithori]

ok, the general workflow is more or less the same for these tools.

You have a monitoring host.
And you have multiple clients.

- On the monitoring host, there is a daemon that triggers "probes" on the clients.
- These probes are scripts, that output values like load, memory usage, disk space, raid health, etc for each client.
- the monitoring hosts collects these values and stores them in RRDs. (RoundRobinDatabase)
- then there is some sort of webinterface to create pretty graphs on the basis of these RRDs

Look at the examples:
Munin :: ping.uio.no :: rossum.ping.uio.no

For the tunneling:
Something like this might work (from the top of my head)
ssh -L8080:localhost:80 <monitoringhost>

And then connect your browser to localhost:8080

But this would be a rather strange setup.
It is better to run the webserver on the monitoring host and of course guard it via https/password