Issue when creating trigger dependencies

[madhu-reddy]

Terraform v0.13.7
+ provider registry.terraform.io/claranet/zabbix v0.4.0
+ provider registry.terraform.io/hashicorp/aws v2.70.1

Ran in to an issue when creating trigger dependencies, with the below error,

Terraform will perform the following actions:

  # zabbix_trigger.testing-unreachable will be updated in-place
  ~ resource "zabbix_trigger" "testing-unreachable" {
        dependencies = [
            "30934",
        ]
      ~ description  = "testing" -> "{HOST.NAME} is Unreachable !"
        expression   = "{HQ VPN:icmpping.max($,#3)}=0"
        id           = "31018"
        priority     = 0
        status       = 0
    }

Plan: 0 to add, 1 to change, 0 to destroy.

Do you want to perform these actions?
  Terraform will perform the actions described above.
  Only 'yes' will be accepted to approve.

  Enter a value: yes

zabbix_trigger.testing-unreachable: Modifying... [id=31018]

Error: -32602 (Invalid params.): Invalid parameter "/1/expression": incorrect expression starting from "{HQ VPN:icmpping.max($,#3)}=0".

  on zabbix-trigger-dependencies.tf line 373, in resource "zabbix_trigger" "testing-unreachable":
 373: resource "zabbix_trigger" "testing-unreachable" {

[pdecat]

Hi @madhu-reddy, do you manage to set that expression from the Zabbix UI?

If so, what is the plan like after that?

[madhu-reddy]

Hi @pdecat ,

In the Zabbix UI (version: 5.4), the expression present "max(/HQ VPN/icmpping,#3)=0" already present, but not sure when I do an "terraform import trigger-id", it imported the expression with old syntax.

[pdecat]

What does it do if you put max(/HQ VPN/icmpping,#3)=0 in the expression field in your terraform configuration file?

[madhu-reddy]

If I do so, "terraform plan" does not throw any error, but when I do "terraform apply", I get below error,

Error: -32602 (Invalid params.): Invalid parameter "/1/expression": incorrect expression starting from "max(//HQ VPN/icmpping,#3)=0".
  on zabbix-trigger-dependencies.tf line 299, in resource "zabbix_trigger" "hq-vpn-host-unreachable":
 299: resource "zabbix_trigger" "hq-vpn-host-unreachable" {

[madhu-reddy]

FYI, "terraform plan" output,

# zabbix_trigger.hq-vpn-host-unreachable will be updated in-place
  ~ resource "zabbix_trigger" "hq-vpn-host-unreachable" {
      ~ comment      = <<~EOT
         +         # testing
        EOT
        dependencies = [
            "30934",
        ]
        description  = "{HOST.NAME} is Unreachable !"
      ~ expression   = "{HQ VPN:icmpping.max($,#3)}=0" -> "max(/HQ VPN/icmpping,#3)=0"
        id           = "31012"
        priority     = 4
        status       = 0
    }

[pdecat]

If I do so, "terraform plan" does not throw any error, but when I do "terraform apply", I get below error,

Error: -32602 (Invalid params.): Invalid parameter "/1/expression": incorrect expression starting from "max(//HQ VPN/icmpping,#3)=0".
  on zabbix-trigger-dependencies.tf line 299, in resource "zabbix_trigger" "hq-vpn-host-unreachable":
 299: resource "zabbix_trigger" "hq-vpn-host-unreachable" {

You have a suspicious duplicate / in that expression syntax:

max(//HQ VPN/icmpping,#3)=0

Instead of:

max(/HQ VPN/icmpping,#3)=0

Please double check your terraform configuration files 🙏