[ZBX-16896] Linux Templates Speed Change Trigger Created: 2019 Nov 11  Updated: 2024 Apr 10  Resolved: 2022 Feb 14

Status: Closed
Project: ZABBIX BUGS AND ISSUES
Component/s: Templates (T)
Affects Version/s: 4.4.1, 4.4.4
Fix Version/s: 5.0.21rc1, 5.4.11rc1, 6.0.0rc2, 6.0 (plan)

Type: Problem report Priority: Trivial
Reporter: Adam Stirk Assignee: Vyacheslav Khaliev
Resolution: Fixed Votes: 1
Labels: Template, network
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified
Environment:

Zabbix Server v4.4.1

Issue Links:
Sub-task
depends on ZBX-20532 Default "Linux by Zabbix agent" templ... Closed
Team: Team INT
Sprint: Sprint 85 (Feb 2022)
Story Points: 0.125

 Description   

In the templates:

  • Template Module Linux network interfaces by Zabbix agent
  • Template Module Linux network interfaces by Zabbix agent active

 The trigger "Interface {#IFNAME}: Ethernet has changed to lower speed than it was before" isn't working as it's not using the interface speed.

There is also no "Interface {#IFNAME}: Speed" item prototype defined which can be set to   "vfs.file.contents"/sys/class/net/{#IFNAME}/speed"" which should contain the current interface speed.

 Comments   
Comment by Edgar Akhmetshin [ 2019 Nov 12 ]

Hello Adam,

According to the GIT template provides item prototype with trigger:
https://github.com/zabbix/zabbix/blob/master/templates/os/linux_agent/template_os_linux_agent.xml

Which operating system is used on the monitored host (exact name and version)? Does the LLD rule has errors related to the discovery?

Regards,
Edgar

Comment by Adam Stirk [ 2019 Nov 13 ]

Hi,

I'm using RHEL 7.7 using the "Template OS Linux by Zabbix agent active" template supplied with Zabbix v4.4.1.

The issue is that speed changes are not reported, this is because the trigger "Interface {#IFNAME}: Ethernet has changed to lower speed than it was before" uses the item prototype "Interface {#IFNAME}: Interface type" which isn't the current interface speed.

I've looked act the link to the GIT repository version of the template you supplied and is doesn't contain a prototype that uses "vfs.file.contents"/sys/class/net/{#IFNAME}/speed" and this is the file that contains the current interface speed.

 

Regards

Adam

Comment by sh0thub [ 2020 Jan 21 ]

Hello, I found same problem on zabbix 4.4.4 template.

Template: Template Module Windows network by Zabbix agent /active

 

Template is missing Item prototype for determine interface speed:

Name: Interface {#IFNAME}: Speed

Key: vfs.file.contents"/sys/class/net/{#IFNAME}/speed"

Type of information: Numeric

Units: bps

Preprocessing: Custom multiplier 1000000

 

Afterthat, trigger prototype should be like this:

Interface {#IFNAME}: Ethernet has changed to lower speed than it was before

Problem expression:

{Template Module Linux network interfaces by Zabbix agent active:vfs.file.contents["/sys/class/net/\{#IFNAME}

/speed"].change()}<0 and {Template Module Linux network interfaces by Zabbix agent active:vfs.file.contents["/sys/class/net/

{#IFNAME}/speed"].last()}>0
and
({Template Module Linux network interfaces by Zabbix agent active:vfs.file.contents["/sys/class/net/{#IFNAME}

/type"].last()}=6
or {Template Module Linux network interfaces by Zabbix agent active:vfs.file.contents["/sys/class/net/

{#IFNAME}/type"].last()}=1)
and
({Template Module Linux network interfaces by Zabbix agent active:vfs.file.contents["/sys/class/net/{#IFNAME}

/operstate"].last()}<>2)

 

Recovery expression:

({Template Module Linux network interfaces by Zabbix agent active:vfs.file.contents["/sys/class/net/

{#IFNAME}/speed"].change()}>0 and {Template Module Linux network interfaces by Zabbix agent active:vfs.file.contents["/sys/class/net/{#IFNAME}

/speed"].prev()}>0) or
({Template Module Linux network interfaces by Zabbix agent active:vfs.file.contents["/sys/class/net/

{#IFNAME}

/operstate"].last()}=2)

 

Please fix this bug.

Comment by Vyacheslav Khaliev [ 2022 Feb 04 ]

Available in:

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