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bdptcob · Post by **bdptcob** » Fri Feb 22, 2008 4:36 pm

I have a strange problem. I have a device that shows up as Status: Unknown. I can ping this machine from the cacti server. I can run an snmpwalk (snmpwalk -Os -c public -v 1 ldapserver system) on this machine from the cacti server. It was working in december, but since then, the os has been reinstalled and the server has a different functionality now. I have deleted the device from cacti and re-added it to no avail. Any help would be greatly appreciated.

P.S. This is our master ldap server. We have a slave ldap server. Same os, same snmp version, same snmpd config file and it works fine. The only difference in the machines is the master has openfire jabber chat running and a firewall. I've dropped the firewall and it does not make a difference.

bdptcob · Post by **bdptcob** » Fri Feb 22, 2008 5:10 pm

One more thing. If I go into Cacti's system utilities, there is entries for the machine in snmp cache, but nothing in poller cache. Now I'm really new to cacti and snmp in general so I may be missing something obvious. Thanks.

Post by **gandalf** » Sat Feb 23, 2008 9:02 am

Which graphs/data source were created for the new target?
Reinhard

bdptcob · Post by **bdptcob** » Mon Feb 25, 2008 10:59 am

ucd/net cpu usage, load average, memory usage.

Post by **gandalf** » Thu Feb 28, 2008 3:32 pm

When editing the target, what do you see at the upper left corner (SNMP output). Please post it
Reinhard

bdptcob · Post by **bdptcob** » Thu Mar 06, 2008 10:48 am

Atlas - Chat server (atlas.mycompany.com)
SNMP Information
System: Linux atlas.mycompany.com 2.6.9-67.ELsmp #1 SMP Fri Nov 16 12:48:03 EST 2007 i686
Uptime: 141948 (0 days, 0 hours, 23 minutes)
Hostname: atlas.mycompany.com
Location: LocalDataCenter
Contact: bdptcob bdptcob@mycompany.com

Post by **gandalf** » Fri Mar 07, 2008 10:15 am

So at least it answers to SNMP requests. What is your "Downed Host Detection" method (for cacti087, it's a per-host-setting, for earlier releases it's a global setting)
Reinhard

bdptcob · Post by **bdptcob** » Wed Mar 12, 2008 3:24 pm

It was set to ping but I changed it to ping and snmp and just snmp to no avail.

bdptcob · Post by **bdptcob** » Wed Mar 12, 2008 5:19 pm

Got it to show it as up by adding a data source. However, it's not graphing.

Post by **gandalf** » Sat Mar 15, 2008 5:57 am

bdptcob wrote:Got it to show it as up by adding a data source. However, it's not graphing.

Ok, I forgot to mention that adding at least one data source is required to even work on that host. Now, please follow second link of my sig for more help
Reinhard

mickh · Post by **mickh** » Sat Mar 15, 2008 7:13 pm

I've the same problem with two OpenBSD hosts I'm trying to graph. I tried all kind of combinations for the "Downed Device Detection":

SNMP -- not working

Code: Select all

System: OpenBSD <hostname> 4.3 GENERIC#696 i386
Uptime: 2250307 (0 days, 6 hours, 15 minutes)
Hostname: <hostname>
Location: 
Contact: <user>@<hostname>

Ping and SNMP -- not working (see above)
Ping -- working, with Ports 22/tcp (ssh); because Port 23/tcp/udp (telnet) are disabled

If I use ICMP I get the following error messages (and yes, any user on my box is allowed to use ping/ICMP):

Code: Select all

Warning: socket_create() [function.socket-create]: Unable to create socket [1]: Operation not permitted in /var/www/cacti/lib/ping.php on line 158
Warning: socket_set_block() expects parameter 1 to be resource, boolean given in /var/www/cacti/lib/ping.php on line 160

But even if I got the device to work, I'm curious why the SNMP-"ping" doesn't work. Any ideas?

Thanks(M)

Post by **gandalf** » Sun Mar 16, 2008 10:43 am

ICMP requires root privileges or setuid.
SNMP should work, at least if you plan to use SNMP type queries/templates. My advice is to focus on SNMP. And as the SNMP information shows up on the device edit screen, we should get it.
Reinhard

mickh · Post by **mickh** » Mon Mar 17, 2008 11:20 am

@Gandalf, I did a "su - cactiuser" and executed "ping" and "cacti/scritps/ping.pl" with ICMP and it worked. Therefore I'm quite shure that ping.php (which I couldn't try from the command line) should work with ICMP as well. Also, please consider the errors of ping.php I posted above.

What else can I do to further debug the case that the SNMP availability-check is not working? Besides from showing the above posted info, what MIB/OID is CACTI checking for the SNMP availablility check?

Thanks(M)

Post by **gandalf** » Mon Mar 17, 2008 12:19 pm

mickh wrote:What else can I do to further debug the case that the SNMP availability-check is not working? Besides from showing the above posted info, what MIB/OID is CACTI checking for the SNMP availablility check?

Thanks(M)

Cacti executes a getnext request on OID .1 and .1.3, AFAIK.
Are you using spine? There's a nice debug mode with spine that will help
Reinhard

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