[#ZBX-4480] using "Interfaces" as Application name makes the host unavailable

[ZBX-4480] using "Interfaces" as Application name makes the host unavailable Created: 2011 Dec 22 Updated: 2017 May 30 Resolved: 2012 Apr 17
Status:	Closed
Project:	ZABBIX BUGS AND ISSUES
Component/s:	Server (S)
Affects Version/s:	1.9.8 (beta)
Fix Version/s:	None

Type:

Incident report

Priority:

Major

Reporter:

Marc Herren

Assignee:

Unassigned

Resolution:

Duplicate

Votes:

Labels:

items, snmp

Remaining Estimate:

Not Specified

Time Spent:

Not Specified

Original Estimate:

Not Specified

Environment:

CentOS Linux release 6.0 (Final)

Attachments:

Screen Shot 2011-12-22 at 5.38.40 PM.png

Issue Links:

Duplicate
duplicates	~~ZBX-4425~~	When update item interface is set to ...	Closed

Description

I have configured a host with SNMP observing several SNMP values.

As soon as I create an Application named "Interfaces" the previous working snmp request stops working.

The server.log shows:

18793:20111222:173250.415 SNMP item [Port_22_In_Octets] on host [test] failed: first network error, wait for 15 seconds
18791:20111222:173251.413 SNMP item [Port_22_Out_Octets] on host [test] failed: another network error, wait for 15 seconds
18795:20111222:173252.418 SNMP item [Port_22_In_Errors] on host [test] failed: another network error, wait for 15 seconds
18794:20111222:173253.428 SNMP item [Port_22_Out_Errors] on host [test] failed: another network error, wait for 15 seconds
18796:20111222:173314.066 SNMP item [Port_22_Out_Octets] on host [test] failed: another network error, wait for 15 seconds
18796:20111222:173335.086 SNMP item [Port_22_Out_Errors] on host [test] failed: another network error, wait for 15 seconds
18796:20111222:173356.119 temporarily disabling SNMP checks on host [test]: host unavailable
18796:20111222:173456.128 enabling SNMP checks on host [test]: host became available

I then have to completely remove the host from the db and recreate it. Just removing the Application association does not help.

Without having this association SNMP retrieval works without any issue.

Comments

Comment by Marc Herren [ 2011 Dec 22 ]

it works without any problems with other appliction names, only "Interfaces" is causing problems. Perhaps its a reserved word?

Comment by Alexander Vladishev [ 2011 Dec 23 ]

The application name shouldn't affect on server operation in any way. The server side does not process applications! Similar it is simple coincidence.

Try once again.

Comment by richlv [ 2011 Dec 23 ]

that indeed seems quite unlikely. you could try snmpget for the same oids from the zabbix server when it starts to fail. if you can reliably reproduce this situation, please, reopen this issue - but make sure to reproduce exact steps a few times because it would be highly unusual to be true

Comment by Marc Herren [ 2011 Dec 23 ]

I could easily recreate it several times.

First I tough it might be related to ~~ZBX-4277~~ but using DNS did not solve the issue.

By coincidence I figured out that I lost all my host as soon as I used "Interfaces" as application name.

To sum it up:

I reproduced this error on at least 5 different hosts
Those host where running fine with snmp for over 24h
I only added the application name to the "Interfaces" and then after 2-3 minutes the hosts was gone.

I'll be back at work on the 3 of january and if you want I can perform any debug task you want.

Comment by Marc Herren [ 2011 Dec 23 ]

and yes, the host is responding at that moment by snmpget/walk on all the OID's I am monitoring.