{#IFNAME} trigger filter

[acastano]

Hi, I have a trigger prototype to detect high traffic on network interfaces and it looks like this:

Name:
Too much incoming traffic on {#IFNAME} on {HOSTNAME}

Expression:
{Template OS Linux:net.if.in[{#IFNAME},bytes].min(5m)}>50M

I would like to exclude interfaces named like eth1 because they are for backup purposes only.
Can somebody help me to write and expression for that?

[vchrizz]

based on this post Edit vfs.fs.size trigger NOT to go off for disk C: i created following workaround which might help in this case:

using "Template OS Linux" ("Discovery rules" -> "Network interface discovery")

"Item prototypes" -> Create item prototype

Name: Interface echo name {#IFNAME}
Type: External check
Key:  echo["{#FSNAME}"]
Type of information: Text

"Trigger prototypes" -> Create trigger prototype

Name: Over 10 MBit/s Incoming Traffic in last 5min on Interface {#IFNAME}
Expression: {Template OS Linux:net.if.in[{#IFNAME}].last(5m)}>10M and {Template OS Linux:echo["{#IFNAME}"].regexp(^ppp)}=1

"Trigger prototypes" -> Create trigger prototype

Name: Over 10 MBit/s Outgoing Traffic in last 5min on Interface {#IFNAME}
Expression: {Template OS Linux:net.if.out[{#IFNAME}].last(5m)}>10M and {Template OS Linux:echo["{#IFNAME}"].regexp(^ppp)}=1

have in mind that this creates triggers for *every* discovered interface, if you monitor devices with many interfaces, you might want to exclude unneeded interfaces from discovery in Administration->General->Regular expressions->Network interfaces for discovery

tested on zabbix 3.2.7.

[vchrizz]

if you dont like the approach having many items and triggers, see thread Create trigger for interfaces where i posted another approach.

[Ryan854]

According to the documentation (Trigger expression), all trigger follow the syntax below:

Code:

  
[COLOR=#000000]{<server>:<key>.<function>(<parameter>)}<operator><constant>[/COLOR]

{#IFNAME} = ppp0 is not allowed.

Just create an item "ppp0" and a trigger using it, instead of using low-level discovery for this interface.

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