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decker in flux
n00b
Joined: 08 Dec 2002
Posts: 60
Location: in flux
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 Posted: Tue Nov 25, 2003 12:49 am Post subject: |
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Loooking at the CPU output, i am curious if it is possible to set it up ( or rather how would i go about setting mrtg up ) for monitoring multiple CPUs?
So having out put for
cpu0
cpu1
cpu2
cpu3
...
...
thanks
-d
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>;/
sloppy focus owns you
>;/design.inspire.create.progress |
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khazad-dum
Tux's lil' helper
Joined: 26 May 2003
Posts: 148
Location: Moria
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| Posted: Tue Nov 25, 2003 9:46 am Post subject: |
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Sorry, but I've just one cpu and I can't try it...anyway, put this in your cpu1.cfg and match the results (cpu0 vs cpu1):
| Code: |
Target[localhost.cpu1]:ssCpuRawUser.1&ssCpuRawUser.1:public@localhost + ssCpuRawSystem.1&ssCpuRawSystem.1:public@localhost + ssCpuRawNice.1&ssCpuRawNice.1:public@localhost
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and go on...
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Target[localhost.cpuN]:ssCpuRawUser.N&ssCpuRawUser.N:public@localhost + ssCpuRawSystem.N&ssCpuRawSystem.N:public@localhost + ssCpuRawNice.N&ssCpuRawNice.N:public@localhost
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Let me know (or give me the link)....I'm curious.
Remember:
https://forums.gentoo.org/viewtopic.php?p=657204#657204
khazad-dum |
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maomao
n00b
Joined: 25 Apr 2003
Posts: 3
Location: china
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| Posted: Tue Nov 25, 2003 12:56 pm Post subject: |
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I had emerged net-snmp,but when I started snmpd,the system told me as follow:
| Code: |
root:/etc/init.d# ./snmpd start
* Starting net-snmpd...
/usr/sbin/snmpd: relocation error: /usr/sbin/snmpd: undefined symbol: smux_listen_sd [!!]
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who can tell me why?how to solve? |
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khazad-dum
Tux's lil' helper
Joined: 26 May 2003
Posts: 148
Location: Moria
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| Posted: Tue Nov 25, 2003 9:22 pm Post subject: |
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It's strange...try to:
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emerge sync
emerge -u system
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And re-emerge snmpd
khazad-dum |
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maomao
n00b
Joined: 25 Apr 2003
Posts: 3
Location: china
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| Posted: Wed Nov 26, 2003 2:44 am Post subject: |
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I've solve it.
re-emerge perl,version is 5.8.0-r12
download net-snmp source
unzip package and complie source ourself
[/code] |
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servermonk
Apprentice
Joined: 07 Nov 2003
Posts: 182
Location: MI
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| Posted: Wed Nov 26, 2003 4:24 am Post subject: multiple hosts... |
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totally awesome walk through btw  Maybe someone can tackle this one:
I've had snmp/mrtg setup before on this same machine and never had any problems getting it setup to query multiple machines until I installed gentoo.
For some reason I can not make snmpget or snmpwalk requests to other machines OR from other machines to this one, even when snmp/mrtg works localy on all the machines in question.
I've even tried disabling iptables entirely just to make sure it wasn't a botched iptables config... still no response to snmp requests. So far I've run into two other people having this same problem: exact same snmp config works on a machine with redhat, and doesn't in gentoo. Any idea's?
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khazad-dum
Tux's lil' helper
Joined: 26 May 2003
Posts: 148
Location: Moria
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| Posted: Wed Nov 26, 2003 8:32 am Post subject: |
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You must specify IP class or ip address.
For example:
HostA have 216.239.59.99 ip address (and Netmask 255.255.255.0). It gets statistics from: HostB,HostC and HostD.
In every HOST polled (B,C and D) the
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/etc/snmp/snmpd.conf
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must have this line:
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com2sec local localhost public
com2sec public 216.239.59.99/24 public
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Restart snmpd.
khazad-dum |
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servermonk
Apprentice
Joined: 07 Nov 2003
Posts: 182
Location: MI
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| Posted: Wed Nov 26, 2003 4:56 pm Post subject: |
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Here is an example of my snmpd.conf file:
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com2sec local local.ip.add.ress/32 mygroup
com2sec mynetwork my.ip.add.ress/32 mygroup
com2sec mynetwork my.other.ip.address/32 mygroup
group MyROGroup v1 local
group MyROGroup v2c local
group MyROGroup usm local
group MyROGroup v1 mynetwork
group MyROGroup v2c mynetwork
group MyROGroup usm mynetwork
view all included .1 80
access MyROGroup "" any noauth exact all none none
syslocation mylocation
syscontact myemailaddress
disk1 / 100000
disk2 /home 100000
disk3 /backup 100000
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the problem is that even simple snmpget and snmpwalk queries can't exit or enter the machine even with no firewall rules present. Is there anything at teh kernel level I need to be looking for?
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Jeff Poulin
n00b
Joined: 31 Dec 2002
Posts: 10
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| Posted: Thu Nov 27, 2003 6:41 am Post subject: |
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Hmmm, I tried this on one Gentoo system (Dell PE300, Pentium III/800, Linux 2.4.22 vanilla, Intel Pro 100) and it worked perfectly. I tried it on another system (Dell PE1600SC, Pentium IV/2.8GHz, Linux 2.4.22 vanilla, Intel Pro 1000) and it failed with the following message:
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--base: Get Device Info on public@localhost:
SNMP Error:
no response received
SNMPv1_Session (remote host: "localhost" [127.0.0.1].161)
community: "public"
request ID: 1024590663
PDU bufsize: 8000 bytes
timeout: 2s
retries: 5
backoff: 1)
at /usr/bin/../lib/mrtg2/SNMP_util.pm line 570
SNMPWALK Problem for 1.3.6.1.2.1.1 on public@localhost:
at /usr/bin/cfgmaker line 709
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What's interesting is that these two systems are nearly identical in setup (I created the gentoo system on the 2.8GHz machine and compiled everything for i686, then did a "cp -a" from a rescue CD to image an identical drive for the 2nd system. I only changed a few config files (hostname, IP address info, etc...), so the two should be the same.
Does snmp not work on the kernel's e1000 driver? That's the only material difference I can think of. Anybody know what I can do here? |
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Jeff Poulin
n00b
Joined: 31 Dec 2002
Posts: 10
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| Posted: Thu Nov 27, 2003 6:51 am Post subject: |
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| Just a little more info on the above post, I did an "emerge sync" then an "emerge net-snmp libgd mrtg" on both machines before starting and followed the intructions on the first post to the letter. Googling pointed to articles about the community string, but since the first one (P3/800) worked fine with the same setup, I'm not sure that's the problem. |
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khazad-dum
Tux's lil' helper
Joined: 26 May 2003
Posts: 148
Location: Moria
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| Posted: Thu Nov 27, 2003 2:33 pm Post subject: |
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I'm currently use this version:
| Code: |
net-analyzer/net-snmp-5.0.9-r1 +ssl -ipv6 +tcpd
net-analyzer/mrtg-2.9.29
media-libs/libgd-2.0.15-r1 -X -gif
dev-lang/perl-5.8.0-r12 +berkdb -doc +gdbm -threads
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and I've no problems.
Please, try to upgrade/downgrade (only for test) your programs in all machines monitored, and give me a feedback.
khazad-dum
Last edited by khazad-dum on Sat Nov 29, 2003 5:06 pm; edited 1 time in total |
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servermonk
Apprentice
Joined: 07 Nov 2003
Posts: 182
Location: MI
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| Posted: Thu Nov 27, 2003 4:41 pm Post subject: still no luck |
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I recompiled perl, net-snmp, libgd and mrtg with the same USE flags listed above and tried again using this line from the net-snmp.org site under the v5 tutorial:
| Code: |
snmpget -v 2c -c demopublic test.net-snmp.org sysUpTime.0
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Using this line returns a value on all of my machines except for my gentoo box, even with iptables and portsentry turned off.
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Jeff Poulin
n00b
Joined: 31 Dec 2002
Posts: 10
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| Posted: Thu Nov 27, 2003 6:31 pm Post subject: |
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| khazad-dum wrote: | I'm currently use this version:
| Code: |
net-analyzer/net-snmp-5.0.9-r1 +ssl -ipv6 +tcpd
net-analyzer/mrtg-2.9.29
media-libs/libgd-2.0.15-r1 -X -gif
dev-lang/perl-5.8.0-r12 +berkdb -doc +gdbm -threads
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and I've no problems.
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I'm running exactly the same versions, but still can't get snmp to work with my Intel Pro/1000. BTW, what command line did you use to show the USE variables compiled for your packages? |
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khazad-dum
Tux's lil' helper
Joined: 26 May 2003
Posts: 148
Location: Moria
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| Posted: Thu Nov 27, 2003 9:56 pm Post subject: |
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| Quote: |
I'm running exactly the same versions, but still can't get snmp to work with my Intel Pro/1000. BTW, what command line did you use to show the USE variables compiled for your packages? |
emerge -vp |
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khazad-dum
Tux's lil' helper
Joined: 26 May 2003
Posts: 148
Location: Moria
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| Posted: Thu Nov 27, 2003 10:13 pm Post subject: |
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servermonk enable snmp's logging:
and restart the daemon.
The problem can be solved if we have more log.
khazad-dum |
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servermonk
Apprentice
Joined: 07 Nov 2003
Posts: 182
Location: MI
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| Posted: Fri Nov 28, 2003 12:55 am Post subject: |
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snmpd is logging to /var/log/net-snmpd.log but the only thing listed there is "Connection from (my local ip address)" over and over again.
Is there a way to enable more verbose logging?
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khazad-dum
Tux's lil' helper
Joined: 26 May 2003
Posts: 148
Location: Moria
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| Posted: Sat Nov 29, 2003 4:44 pm Post subject: |
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Try to increase the level on your logger:
From man klogd
| Code: |
-c n Sets the default log level of console messages to n.
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and edit the
/etc/conf.d/syslogd
or try to set a faciity level for snmpd:
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-S d|0-7 Specifies the syslog facility to use when logging to syslog. 'd' means LOG_DAEMON and 0 through 7 mean LOG_LOCAL0 through LOG_LOCAL7. LOG_DAEMON is the default.
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and increase the debug option in your syslog file. If you use (for example) local7 try to put
| Code: |
local7.=debug (or local7=* too)
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into /etc/syslog.conf and restart it.
Another way is the debugging:
from man snmpd
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-D[TOKEN[,...]] Turn on debugging output for the given TOKEN(s). Without any tokens specified, it defaults to printing all the tokens (which is equivalent to the keyword "ALL"). You might want to try ALL for extremely verbose output. Note: You can not put a space between the -D flag and the listed TOKENs.
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and man sysklogd
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-d Turns on debug mode. Using this the daemon will not proceed a fork(2) to set itself in the background,but opposite to that stay in the foreground and write much debug information on the current tty. See the DEBUGGING section for more information.
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khazad-dum |
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Jeff Poulin
n00b
Joined: 31 Dec 2002
Posts: 10
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| Posted: Tue Dec 02, 2003 7:37 am Post subject: |
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I found a solution to my problem (above)
| Code: |
--base: Get Device Info on public@localhost:
SNMP Error:
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If I replace @localhost with @[my hostname] in my /etc/mrtg/*.cfg files, everything works. |
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crypt0shite
n00b
Joined: 21 Nov 2003
Posts: 21
Location: slc, utah
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| Posted: Fri Dec 05, 2003 11:02 pm Post subject: thank you |
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| Thanks to your great guide and the follow-up replies I have MRTG up and running. Gentoo has the best community! |
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hertog
Tux's lil' helper
Joined: 28 Jun 2002
Posts: 138
Location: Enschede/The Netherlands/Europe
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| Posted: Wed Dec 17, 2003 2:39 pm Post subject: |
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Hmmm... the memory part and the swap part don't seem to work, no matter what I put in the Target line.
Anyone who can confirm that this has to do with the 2.6.0 kernel?
No value of what I see passingby rings a bell, and those that do have a value of '0' in it  |
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chrisyu
Apprentice
Joined: 10 Apr 2003
Posts: 207
Location: China
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| Posted: Tue Dec 23, 2003 5:38 am Post subject: |
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I use kernel 2.6, mem and swap didn't work either. 
no error, but just no data output in picture. |
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hertog
Tux's lil' helper
Joined: 28 Jun 2002
Posts: 138
Location: Enschede/The Netherlands/Europe
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| Posted: Tue Dec 23, 2003 6:46 am Post subject: |
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| chrisyu wrote: | I use kernel 2.6, mem and swap didn't work either.
no error, but just no data output in picture. |
Exactly what I am seeing, so let's keep it at a kernel version related problem.
Now for a solution  ...
Gr.
Hertog |
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chrisyu
Apprentice
Joined: 10 Apr 2003
Posts: 207
Location: China
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| Posted: Tue Dec 23, 2003 9:42 am Post subject: |
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found something in /var/log/net-snmpd.log
No swap line in /proc/stat
No page line in /proc/stat
maybe this problem??
and my /proc/stat file
| Code: |
cpu 155998 0 61383 3568895 29288 0 0
cpu0 155998 0 61383 3568895 29288 0 0
intr 44145554 38155664 8 0 0 0 0 2 0 2 0 5866193 0 92 0 123574 19
ctxt 7036989
btime 1072134446
processes 32760
procs_running 1
procs_blocked 0
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khazad-dum
Tux's lil' helper
Joined: 26 May 2003
Posts: 148
Location: Moria
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| Posted: Tue Dec 23, 2003 6:25 pm Post subject: |
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I think we'll have to wait for the new OID (Object IDentifier) from net-snmp.sf.net for 2.6.x branch.
Work around
cat and cut are your friends !!
| Code: |
root@guardian proc # cat /proc/meminfo | grep SwapFree | cut -d ' ' -f 8
224884
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Look into /proc/meminfo (and /proc/stat or /proc/* too) and cat&cut your $VARIABLES
| Code: |
Target[localhost.mem]: `cat /proc/meminfo | grep |MemTotal cut -d ' ' -f 8`
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Enjoy
 |
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apokalyptik
n00b
Joined: 18 Jun 2002
Posts: 62
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| Posted: Tue Dec 23, 2003 8:05 pm Post subject: for everyone who likes to cut and paste :) |
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| Code: | WORKDIR=/home/blah/public_html/svc/`hostname`
PAGETITLE=`hostname`": Statistics"
DELOLDINFO=1
MAKECRON=1
if [ $DELOLDINFO -eq 1 ]
then
if [ -d $WORKDIR ]
then
rm -rf $WORKDIR
fi
fi
/usr/bin/mkdir /etc/mrtg
/usr/bin/mkdir /etc/cron.mrtg
/usr/bin/mkdir $WORKDIR
echo 'com2sec local 127.0.0.1/32 public
com2sec local 10.0.0.0/24 public
group MyROGroup v1 local
group MyROGroup v2c local
group MyROGroup usm local
view all included .1 80
access MyROGroup "" any noauth exact all none none
syslocation MyLocation
syscontact Me <service@eaglenetworks.net> ' > /etc/snmp/snmpd.conf
echo 'SNMPD_FLAGS="$SNMPD_FLAGS -c /etc/snmp/snmpd.conf"' >> /etc/conf.d/snmpd
/sbin/rc-update add snmpd default
/etc/init.d/snmpd start
mkdir $WORKDIR
/usr/bin/cfgmaker \
--output=/etc/mrtg/traffic.cfg \
--ifdesc=ip \
--ifref=descr \
--global "WorkDir: $WORKDIR" \
--global "Options[_]: bits,growright" \
public@localhost
echo 'WorkDir: '$WORKDIR'
LoadMIBs: /usr/share/snmp/mibs/UCD-SNMP-MIB.txt
Target[localhost.cpu]:ssCpuRawUser.0&ssCpuRawUser.0:public@localhost + ssCpuRawSystem.0&ssCpuRawSystem.0:public@localhost + ssCpuRawNice.0&ssCpuRawNice.0:public@localhost
RouterUptime[localhost.cpu]: public@localhost
MaxBytes[localhost.cpu]: 100
Title[localhost.cpu]: CPU Load
PageTop[localhost.cpu]: <H1>Active CPU Load %</H1>
Unscaled[localhost.cpu]: ymwd
ShortLegend[localhost.cpu]: %
YLegend[localhost.cpu]: CPU Utilization
Legend1[localhost.cpu]: Active CPU in % (Load)
Legend2[localhost.cpu]:
Legend3[localhost.cpu]:
Legend4[localhost.cpu]:
LegendI[localhost.cpu]: Active
LegendO[localhost.cpu]:
Options[localhost.cpu]: growright,nopercent ' > /etc/mrtg/cpu.cfg
echo 'LoadMIBs: /usr/share/snmp/mibs/HOST-RESOURCES-MIB.txt
Target[localhost.mem]: .1.3.6.1.4.1.2021.4.11.0&.1.3.6.1.4.1.2021.4.11.0:public@localhost
PageTop[localhost.mem]: <H1>Free Memory </H1>
WorkDir: '$WORKDIR'
Options[localhost.mem]: nopercent,growright,gauge,noinfo
Title[localhost.mem]: Free Memory
MaxBytes[localhost.mem]: 1000000
kMG[localhost.mem]: k,M,G,T,P,X
YLegend[localhost.mem]: bytes
ShortLegend[localhost.mem]: bytes
LegendI[localhost.mem]: Free Memory:
LegendO[localhost.mem]:
Legend1[localhost.mem]: Free memory, not including swap, in bytes ' > /etc/mrtg/mem.cfg
echo 'LoadMIBs: /usr/share/snmp/mibs/UCD-SNMP-MIB.txt
Target[localhost.swap]: memAvailSwap.0&memAvailSwap.0:public@localhost
PageTop[localhost.swap]: <H1>Swap Memory</H1>
WorkDir: '$WORKDIR'
Options[localhost.swap]: nopercent,growright,gauge,noinfo
Title[localhost.swap]: Free Memory
MaxBytes[localhost.swap]: 1000000
kMG[localhost.swap]: k,M,G,T,P,X
YLegend[localhost.swap]: bytes
ShortLegend[localhost.swap]: bytes
LegendI[localhost.swap]: Free Memory:
LegendO[localhost.swap]:
Legend1[localhost.swap]: Swap memory avail, in bytes ' > /etc/mrtg/swap.cfg
echo 'WorkDir: '$WORKDIR'
Title[localhost.ping]: Round Trip Time
PageTop[localhost.ping]: <H1>Round Trip Time</H1>
Target[localhost.ping]: `/etc/mrtg/ping.sh`
MaxBytes[localhost.ping]: 2000
Options[localhost.ping]: growright,unknaszero,nopercent,gauge
LegendI[localhost.ping]: Pkt loss %
LegendO[localhost.ping]: Avg RTT
Legend1[localhost.ping]: Maximum Round Trip Time in ms
Legend2[localhost.ping]: Minimum Round Trip Time in ms
Legend3[localhost.ping]: Maximal 5 Minute Maximum Round Trip Time in ms
Legend4[localhost.ping]: Maximal 5 Minute Minimum Round Trip Time in ms
YLegend[localhost.ping]: RTT (ms) ' > /etc/mrtg/ping.cfg
echo '#!/bin/sh
/usr/bin/mrtg /etc/mrtg/traffic.cfg ' > /etc/cron.mrtg/traffic.sh
chmod 751 /etc/cron.mrtg/traffic.sh
echo '#!/bin/sh
/usr/bin/mrtg /etc/mrtg/mem.cfg ' > /etc/cron.mrtg/mem.sh
chmod 751 /etc/cron.mrtg/mem.sh
echo '#!/bin/sh
/usr/bin/mrtg /etc/mrtg/swap.cfg ' > /etc/cron.mrtg/swap.sh
chmod 751 /etc/cron.mrtg/swap.sh
echo '#!/bin/sh
/usr/bin/mrtg /etc/mrtg/ping.cfg ' > /etc/cron.mrtg/ping.sh
chmod 751 /etc/cron.mrtg/ping.sh
echo '#!/bin/sh
/usr/bin/mrtg /etc/mrtg/cpu.cfg ' > /etc/cron.mrtg/cpu.sh
chmod 751 /etc/cron.mrtg/cpu.sh
echo '#!/bin/sh
PING="/bin/ping"
# Google, for example
ADDR="google.com"
DATA=`$PING -c10 -s500 $ADDR -q `
LOSS=`echo $DATA | awk "{print $18 }" | tr -d %`
echo $LOSS
if [ $LOSS = 100 ];
then
echo 0
else
echo $DATA | awk -F/ "{print $5 }"
fi
' > /etc/mrtg/ping.sh
chmod 751 /etc/mrtg/ping.sh
/bin/chmod +x /etc/cron.mrtg/*.sh
/bin/chmod +x /etc/mrtg/ping.sh
/etc/cron.mrtg/traffic.sh
/etc/cron.mrtg/cpu.sh
/etc/cron.mrtg/mem.sh
/etc/cron.mrtg/swap.sh
/etc/cron.mrtg/ping.sh
/etc/cron.mrtg/traffic.sh
/etc/cron.mrtg/cpu.sh
/etc/cron.mrtg/mem.sh
/etc/cron.mrtg/swap.sh
/etc/cron.mrtg/ping.sh
/etc/cron.mrtg/traffic.sh
/etc/cron.mrtg/cpu.sh
/etc/cron.mrtg/mem.sh
/etc/cron.mrtg/swap.sh
/etc/cron.mrtg/ping.sh
/usr/bin/indexmaker --output=$WORKDIR/index.html \
--title="$PAGETITLE" \
--sort=name \
--enumerate \
/etc/mrtg/traffic.cfg \
/etc/mrtg/cpu.cfg \
/etc/mrtg/mem.cfg \
/etc/mrtg/swap.cfg \
/etc/mrtg/ping.cfg
if [ $MAKECRON -eq 1 ]
then
echo '*/5 * * * * /bin/run-parts /etc/cron.mrtg 1> /dev/null' >> /var/spool/cron/crontabs/root
fi |
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Documentation, Tips & Tricks
