Package: netmrg
Version: 0.18.2-14
Severity: normal
Tags: patch
Here is a script that makes it possible to monitor the CPU temperature
or fan speed using the data gathered by the lm-sensors modules.
In theory it would be enough to use something like 'cat
/sys/class/hwmon/hwmon0/device/temp1_input' as the test script. Then
simply apply the right scaling to the graph and that's it.
But NetMRG prepends '/usr/lib/netmrg/' to the command which gives
'/usr/lib/netmrg/cat' which obviously failsi (and is undocumented as
far as I can tell). I assume this is done for security reasons.
So I have written a short script to somewhat based on the
linux26diskaccess.pl one that performs parameter checking and accesses this
data. It can then be invoked with something like this:
* Test Script: CPU Temp
Command: lmsensors.pl temp1
Data Type: Standard Out / Gauge
* Test Script: CPU Fan
Caommand lmsensors.pl fan1
Data Type: Standard Out / Gauge
Obviously the exact sensor corresponding to the CPU or case temperature
depend on the systemi and would have to be determined beforehand.
Also the above approach requires creating one test script per sensor to
monitor which is a bit ugly. Maybe a better approach would be to use the
per-monitor parameters field but I found no documentation about this and
haven't experimented yet.
Anyway, this can probably be useful to others so I am submitting this
script here for inclusion.
-- System Information:
Debian Release: 4.0
APT prefers testing
APT policy: (500, 'testing'), (500, 'stable')
Architecture: i386 (i686)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.17.8fg1
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Versions of packages netmrg depends on:
ii adduser 3.102 Add and remove users and groups
ii apache2-mpm-prefork [httpd 2.2.3-3.2 Traditional model for Apache HTTPD
ii debconf [debconf-2.0] 1.5.11 Debian configuration management sy
ii libc6 2.3.6.ds1-11 GNU C Library: Shared libraries
ii libgcc1 1:4.1.1-21 GCC support library
ii libmysqlclient15off 5.0.32-3 mysql database client library
ii libsnmp9 5.2.3-7 NET SNMP (Simple Network Managemen
ii libssl0.9.8 0.9.8c-4 SSL shared libraries
ii libstdc++6 4.1.1-21 The GNU Standard C++ Library v3
ii libxml2 2.6.27.dfsg-1 GNOME XML library
ii mysql-client-5.0 [mysql-cl 5.0.32-3 mysql database client binaries
ii php4 6:4.4.4-8 server-side, HTML-embedded scripti
ii php4-cli 6:4.4.4-8 command-line interpreter for the p
ii php4-mysql 6:4.4.4-8 MySQL module for php4
ii rrdtool 1.2.15-0.3 Time-series data storage and displ
ii wwwconfig-common 0.0.48 Debian web auto configuration
ii zlib1g 1:1.2.3-13 compression library - runtime
netmrg recommends no packages.
-- debconf information excluded
*** /usr/lib/netmrg/lmsensors.pl
#!/usr/bin/perl
use strict;
### argument processing
my $sensor=$ARGV[0];
my $hwmon=$ARGV[1] || "hwmon0";
if (@ARGV < 1 or @ARGV > 2 or $sensor !~ /^\w+$/ or $hwmon !~ /^\w+$/)
{
print "U\n";
print "\n";
print "$0 <sensor> [monitor]\n";
print "\n";
print "Reports sensor gauges for use as a NetMRG test script.\n";
print "\n";
print "Options:\n";
print " sensor Is the sensor value to report\n";
print " monitor The hardware monitor the sensor is attached to,
'hwmon0' by default\n";
print "\n";
exit 1;
}
# read the data from the correct path
my $path = "/sys/class/hwmon/$hwmon/device/${sensor}_input";
open(STAT, $path) || die ("U\nERROR: couldn't open $path\n\n");
my $value = <STAT>;
close(STAT);
print $value;
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