Application Gateway Bug request routing rule always recreated

[faisaleem-na]

Is there an existing issue for this?

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Terraform Version

0.14.7

AzureRM Provider Version

3.12.0

Affected Resource(s)/Data Source(s)

azurerm_application_gateway

Terraform Configuration Files

dynamic "request_routing_rule" {
    for_each = var.gateway[each.key].request_routing_rule
    content {
      name                       = "${lookup(request_routing_rule.value, "name", null)}-rqrt"
      rule_type                  = lookup(request_routing_rule.value, "rule_type", null)
      priority                   = lookup(request_routing_rule.value, "priority", 1)
      http_listener_name         = lookup(request_routing_rule.value, "lsnrname", null) != null ? "${lookup(request_routing_rule.value, "lsnrname")}-httplstn" : "${lookup(request_routing_rule.value, "name", null)}-httplstn"
      backend_address_pool_name  = lookup(request_routing_rule.value, "beapname", null) != null ? "${lookup(request_routing_rule.value, "beapname")}-beap" : null
      backend_http_settings_name = lookup(request_routing_rule.value, "behtstname", null) != null ? "${lookup(request_routing_rule.value, "behtstname")}-be-htst" : lookup(request_routing_rule.value, "rdrcfgname", null) != null ? null : lookup(request_routing_rule.value, "rule_type") == "Basic" ? "${lookup(request_routing_rule.value, "name", null)}-be-htst" : null
      redirect_configuration_name= lookup(request_routing_rule.value, "rdrcfgname", null) != null ? "${lookup(request_routing_rule.value, "rdrcfgname", null)}-rdrcfg" : null
      rewrite_rule_set_name      = lookup(request_routing_rule.value, "rwrstname", null) != null ? "${lookup(request_routing_rule.value, "rwrstname", null)}-rwrst" : null
      url_path_map_name          = lookup(request_routing_rule.value, "rule_type") == "PathBasedRouting" ? lookup(request_routing_rule.value, "url_path_map_name") : null
    }
  }

Debug Output/Panic Output

gist coming soon

Expected Behaviour

no configuration changes required

Actual Behaviour

https://gist.github.com/faisaleem-na/377f850bf238482bf6dde88be9cc417b

Steps to Reproduce

terraform plan

Important Factoids

No response

References

No response

[ms-zhenhua]

Hi @faisaleem-na, thank you for reaching out.
It is a little difficult to confirm this issue through the configuration snippet you provided. Could you kindly help provide a complete runnable configuration (You can first remove all sensitive information from it) for this issue ? Then we can do more investigation on it.
You can compress all the configuration files into a .zip file and attach it in this GH issue if it's too large.
Thanks.

[faisaleem-na]

Hi @ms-zhenhua,

ok no problem, i will do that, will just need a day or so as currently quite busy. will aim to have it here by COB thursday
thanks

[rolandjohann]

Seems to hit this bug #16136

[faisaleem-na]

Seems to hit this bug #16136

yep spot on, should have known it was already reported but this is the exact issue. bit concerned that the fix is way off though :(

[rcskosir]

@faisaleem-na Thanks for taking the time to submit this issue. It looks like this is a duplicate of #16136. We like to try to keep discussions consolidated, so we’re going to close this newer issue in favor of #16136.

[github-actions]

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