SNMP doesnt work (v1.9.3)

[MADxHAWK]

Hi,

i just installed zabbix 1.9.3 on a Debian Lenny x86 System and tried to monitor my homeserver and linux router (fli4l with OPT_SNMP) but ran into some problems.

I created a host for the Server:
Name: Lan Server
Group: Lan Server

Interfaces:
ip: 127.0.0.1
DNS Name: localhost
Connect: IP
Port: 161
Type: SNMP

Monitored by Proxy: (no Proxy)
Status: Monitored

First i try to add a Item by clicking on ITEMS.
Host: Lan Server
Host Interface: 127.0.0.1:161
Description: Incoming Traffic on eth0
Type: SNMPv2 Agent
SNMP OID: interfaces.ifTable.ifEntry.ifInOctets.1
SNMP Community: public
Port: 161
Key: lan_server.ifInOctets.1
Type of Information: Nummeric (Unsigned)
Data Type: Decimal
Units: bps
Use Custom multiplier: deactivated
Update interval: 30 sec.
Flexible interval: no flexible intervals
Keep history (in days): 7
keep trend (in days): 30
Status: Active
Store Value: Delta (speed per sec.)
Show Value: as is

After a few seconds SNMP Button of the host turns red saying
"Timeout while connecting to 127.0.0.1:161"

I've deleted the host completly, added a new one with same hostdata but this time i added the SNMPv2_Device tamplate to the host. But i got same result: Timeout while connecting to 127.0.0.1:161

I have tried it with DNS name localhost and also with the Network ip (192.168.6.30) but never got any SNMP data.

Since SNMPwalk works fine:

snmpwalk -v 2c -Ofn -c public 127.0.0.1:161 ifInOctets.1
.1.3.6.1.2.1.2.2.1.10.1 = Counter32: 288226569

snmpwalk -v 2c -Ofn -c public localhost:161 ifInOctets.1
.1.3.6.1.2.1.2.2.1.10.1 = Counter32: 288228105

snmpwalk -v 2c -Ofn -c public 192.168.6.30:161 ifInOctets.1
.1.3.6.1.2.1.2.2.1.10.1 = Counter32: 288228406

i have no idea whats going wrong here.

Any help would be aprecciated.

-MAD

[richlv]

in host properties, is that interface set to be of type "snmp" ?

edit : well, duh, you specified that it was...

not many ideas then - but you could try setting debuglevel to 4 and checking the logfile (but you will also have to increase max logfile size otherwise interesting information might get rotated away)

[MADxHAWK]

Hi,

heres the logfile, maybe someone could tell me what im doing wrong.

[...]
3500:20110424:134846.775 In get_values()
3500:20110424:134846.775 In DCconfig_get_poller_items() poller_type:1
3500:20110424:134846.775 End of DCconfig_get_poller_items():1
3500:20110424:134846.775 In DCinit_nextchecks()
3500:20110424:134846.775 End of DCinit_nextchecks()
3500:20110424:134846.775 In substitute_simple_macros() data:'server.interfaces.ifTable.ifEntry.ifInOctets .2'
3500:20110424:134846.775 In substitute_simple_macros() data:'127.0.0.1'
3500:20110424:134846.775 In substitute_simple_macros() data:'161'
3500:20110424:134846.775 In substitute_simple_macros() data:'public'
3500:20110424:134846.775 In substitute_simple_macros() data:'.1.3.6.1.2.1.2.2.1.10.2'
3500:20110424:134846.775 In get_value() key:'server.interfaces.ifTable.ifEntry.ifInOctets. 2'
3500:20110424:134846.775 In get_value_snmp() key:'server.interfaces.ifTable.ifEntry.ifInOctets. 2' oid:'.1.3.6.1.2.1.2.2.1.10.2'
3500:20110424:134846.775 In snmp_open_session()
3500:20110424:134846.775 SNMP [[email protected]:161]
3500:20110424:134846.776 End of snmp_open_session()
3500:20110424:134846.776 Standard processing
3500:20110424:134846.776 In snmp_normalize(oid:.1.3.6.1.2.1.2.2.1.10.2)
3500:20110424:134846.776 End of snmp_normalize():.1.3.6.1.2.1.2.2.1.10.2
3500:20110424:134846.776 In get_snmp(oid:.1.3.6.1.2.1.2.2.1.10.2)
[...]
3500:20110424:134852.800 Status send [2]
3500:20110424:134852.800 End of get_snmp():NETWORK_ERROR
3500:20110424:134852.800 In snmp_close_session()
3500:20110424:134852.800 End of snmp_close_session()
3500:20110424:134852.800 End of get_value_snmp():NETWORK_ERROR
3500:20110424:134852.800 Item [Lan Server:server.interfaces.ifTable.ifEntry.ifInOctet s.2] error: Timeout while connecting to [127.0.0.1:161]
3500:20110424:134852.800 In zabbix_log()
3500:20110424:134852.800 In DCconfig_get_items() hostid:0 key:'zabbix[log]'
3500:20110424:134852.800 End of DCconfig_get_items():0
3500:20110424:134852.800 End of zabbix_log()
3500:20110424:134852.800 End of get_value():NETWORK_ERROR
3500:20110424:134852.801 Query [txnlev:1] [begin;]
3500:20110424:134852.801 Query [txnlev:1] [update hosts set snmp_error='Timeout while connecting to [127.0.0.1:161]',snmp_disable_until=1303645792 where hostid=10047]
3500:20110424:134852.801 Query [txnlev:1] [commit;]
3500:20110424:134852.806 In DCflush_nextchecks()
3500:20110424:134852.806 End of get_values():1
3500:20110424:134852.806 unreachable poller #1 spent 6.031316 seconds while updating 1 values
3500:20110424:134852.806 In DCconfig_get_poller_nextcheck() poller_type:1
3500:20110424:134852.806 End of DCconfig_get_poller_nextcheck():1303645792
3500:20110424:134852.806 sleeping for 5 seconds

[richlv]

that smpwalk... where are you running it ?

[MADxHAWK]

Hi,

on same server running zabbix. I've tried dns localhost, ip 127.0.0.1 and eth0 ip 192.168.6.30

I also get the same error when i try to monitor my fli4l router with zabbix.
Here also the snmpwalk works fine from the servershell
( snmpwalk -v 2c -Ofn -c public 192.168.6.1 ifInOctets.1 )

so i think its not a network error.


-greetz MAD

[richlv]

well, it's quite clearly reporting timeout... i'd suggest checking what is sent by zabbix server & by snmpwalk and what the differences are.

edit : check with tcpdump, of course.

this might depend on the version of net-snmp library - it works just fine for me on trunk, compiled against net-snmp 5.6

[MADxHAWK]

ATM here is running NET-SNMP version: 5.4.1

will try to check with tcpdump

greetz
MAD

EDIT: Looks like snmp sends a responce:

Zabbiz Server Log:

27992:20110425:184434.099 In get_values()
27992:20110425:184434.099 In DCconfig_get_poller_items() poller_type:1
27992:20110425:184434.099 End of DCconfig_get_poller_items():1
27992:20110425:184434.099 In DCinit_nextchecks()
27992:20110425:184434.099 End of DCinit_nextchecks()
27992:20110425:184434.099 In substitute_simple_macros() data:'ifInOctets.2'
27992:20110425:184434.099 In substitute_simple_macros() data:'127.0.0.1'
27992:20110425:184434.099 In substitute_simple_macros() data:'161'
27992:20110425:184434.099 In substitute_simple_macros() data:'public'
27992:20110425:184434.099 In substitute_simple_macros() data:'.1.3.6.1.2.1.2.2.1.10.2'
27992:20110425:184434.099 In get_value() key:'ifInOctets.2'
27992:20110425:184434.099 In get_value_snmp() key:'ifInOctets.2' oid:'.1.3.6.1.2.1.2.2.1.10.2'
27992:20110425:184434.099 In snmp_open_session()
27992:20110425:184434.099 SNMP [[email protected]:161]
27992:20110425:184434.100 End of snmp_open_session()
27992:20110425:184434.100 Standard processing
27992:20110425:184434.100 In snmp_normalize(oid:.1.3.6.1.2.1.2.2.1.10.2)
27992:20110425:184434.100 End of snmp_normalize():.1.3.6.1.2.1.2.2.1.10.2
27992:20110425:184434.100 In get_snmp(oid:.1.3.6.1.2.1.2.2.1.10.2)
[...]
27992:20110425:184440.120 Status send [2]
27992:20110425:184440.120 End of get_snmp():NETWORK_ERROR
27992:20110425:184440.120 In snmp_close_session()
27992:20110425:184440.121 End of snmp_close_session()
27992:20110425:184440.121 End of get_value_snmp():NETWORK_ERROR
27992:20110425:184440.121 Item [Lan Server:ifInOctets.2] error: Timeout while connecting to [127.0.0.1:161]
27992:20110425:184440.121 In zabbix_log()
27992:20110425:184440.121 In DCconfig_get_items() hostid:0 key:'zabbix[log]'
27992:20110425:184440.121 End of DCconfig_get_items():0
27992:20110425:184440.121 End of zabbix_log()
27992:20110425:184440.121 End of get_value():NETWORK_ERROR

tcpdump -i lo port 161

18:44:34.100286 IP localhost.43395 > localhost.snmp: GetRequest(30) interfaces.ifTable.ifEntry.ifInOctets.2
18:44:34.101014 IP localhost.snmp > localhost.43395: GetResponse(35) interfaces.ifTable.ifEntry.ifInOctets.2=2554541303
18:44:35.104386 IP localhost.43395 > localhost.snmp: GetRequest(30) interfaces.ifTable.ifEntry.ifInOctets.2
18:44:35.104769 IP localhost.snmp > localhost.43395: GetResponse(35) interfaces.ifTable.ifEntry.ifInOctets.2=2554541303
18:44:36.108407 IP localhost.43395 > localhost.snmp: GetRequest(30) interfaces.ifTable.ifEntry.ifInOctets.2
18:44:36.108809 IP localhost.snmp > localhost.43395: GetResponse(35) interfaces.ifTable.ifEntry.ifInOctets.2=2554541303
18:44:37.112358 IP localhost.43395 > localhost.snmp: GetRequest(30) interfaces.ifTable.ifEntry.ifInOctets.2

When i do snmpwalk:

snmpwalk -v 2c -Ofn -c public 127.0.0.1:161 .1.3.6.1.2.1.2.2.1.10.2

.1.3.6.1.2.1.2.2.1.10.2 = Counter32: 2555127263

tcpdump -i lo port 161

19:04:37.567493 IP localhost.56205 > localhost.snmp: GetNextRequest(30) interfaces.ifTable.ifEntry.ifInOctets.2
19:04:37.567946 IP localhost.snmp > localhost.56205: GetResponse(33) interfaces.ifTable.ifEntry.ifInUcastPkts.1=5134254
19:04:37.568878 IP localhost.56205 > localhost.snmp: GetRequest(30) interfaces.ifTable.ifEntry.ifInOctets.2
19:04:37.569249 IP localhost.snmp > localhost.56205: GetResponse(35) interfaces.ifTable.ifEntry.ifInOctets.2=2555127263

[MADxHAWK]

Hi

i have upgraded my homeserver to debian squeeze with net-snmp v 5.4.3 and a new compiled zabbix v1.9.3 but it still doesnt work.

snmpwalkt works fine:
snmpwalk -v 2c -On -c public localhost icmpOutTimeExcds

.1.3.6.1.2.1.5.17.0 = Counter32: 0

but zabbis now throws a new error:

8862:20110426:023855.638 In get_values()
8862:20110426:023855.638 In DCconfig_get_poller_items() poller_type:0
8862:20110426:023855.638 End of DCconfig_get_poller_items():1
8862:20110426:023855.638 In DCinit_nextchecks()
8862:20110426:023855.638 End of DCinit_nextchecks()
8862:20110426:023855.638 In substitute_simple_macros() data:'icmpOutTimeExcds'
8862:20110426:023855.638 In substitute_simple_macros() data:'127.0.0.1'
8862:20110426:023855.638 In substitute_simple_macros() data:'161'
8862:20110426:023855.639 In substitute_simple_macros() data:'public'
8862:20110426:023855.639 In substitute_simple_macros() data:'1.3.6.1.2.1.5.17.0'
8862:20110426:023855.639 In get_value() key:'icmpOutTimeExcds'
8862:20110426:023855.639 In get_value_snmp() key:'icmpOutTimeExcds' oid:'1.3.6.1.2.1.5.17.0'
8862:20110426:023855.639 In snmp_open_session()
8862:20110426:023855.639 SNMP [[email protected]:161]
8862:20110426:023855.639 End of snmp_open_session()
8862:20110426:023855.639 End of get_value_snmp():NOTSUPPORTED
8862:20110426:023855.639 Item [Lan Server:icmpOutTimeExcds] error: Error doing snmp_open()
8862:20110426:023855.639 In zabbix_log()
8862:20110426:023855.639 In DCconfig_get_items() hostid:0 key:'zabbix[log]'
8862:20110426:023855.639 End of DCconfig_get_items():0
8862:20110426:023855.639 End of zabbix_log()

And tcpdump doesnt even notice a connection try to port 161
Same happens if i try to monitor my productionserver on internet. With the stable version everything worked fine, so it looks like i have to downgrade back to 1.8.5

Last thing i could try is to recompile ans add path to net-snmp-config to the parameters.

EDIT:
completly deletet zabbix and recompiled 1.9.3 and now it works. Well i dont know if its just because of the new snmp version or if anything badly went wrong during the first compiling.
Anyway my homserver now running a new system