Collecting data

[Fabio T. Leitao]

Hello Peter,

I believe most of the information you intend to collect are in the
filesystem /proc (CPU, RAM, HDD, Processes, Uptime, Network, etc.) or the
the /var/log/messages and maybe even the /etc/syslog.conf

Most applications (such as w and ipconntrac) probably read from there to
show in the console what is stored there.

I am not sure if that is exactly what you were looking for, but if you are
trying to read straight from the kernel variables, then when you read the
source code I believe it would not be that difficult to figure out how the
information get written there now that you have the actual destination in
the filesystem.

You should also have a look ate the munin project, specially the plugins to
collect data (every 5 minutes) which might help a lot teaching about where
the gather these info.

2010/12/24 derleader __ <derleader at abv.bg>

>  Hi,
>      I'm developing C plugin for Ubuntu Server which will be installed as
> kernel module. The problem is how to collect the data about:
>
>    -
>
>    CPU Check – Utilization, Model, Number of Cores
>    -
>
>    RAM Check – Total Memory, Free Memory, Memory Load
>    -
>
>    HDD Check – Number of physical HDDs, Number of logical partitions,
>    Total space, Free space
>    -
>
>    Running processes – Total number of processes
>    -
>
>    Logs – system logs such as error logs
>    -
>
>    System uptime
>    -
>
>    Users logged in and last login – total list of users
>    -
>
>    Total network connections
>    -
>
>    Check hardware parts model and number
>
> The kernel module will check the status of the OS every 5 minutes. What is
> the most efficient way to collect these data?
>
> Regards
> Peter
>
>
> --
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>



-- 
Fábio Leitão
..-. .- -... .. ---  .-.. . .. - .- ---  ...-.-
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