我正在使用下面的 ARM 模板来创建应用程序网关。当我第一次部署它时，一切正常。当我重新部署它（作为同一环境中持续部署的一部分）时，它失败了，我看到之前存在的侦听器被删除，并且 SSL 证书也被删除。
是否有任何选项我可以根据标准更新 ARM 模板中存在的子资源，例如如果 SSL 证书已经存在，则不更新侦听器。我正在更新一些属性，例如在创建应用程序网关后创建规则和探测，而不是使用 ARM 模板。
ARM 模板供参考-
{
"$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"parameters": {
"applicationgateway_platform": {
"defaultValue": "",
"type": "String",
"maxLength": 6
},
"applicationgateway_location_shortname": {
"defaultValue": "",
"type": "String",
"maxLength": 3
},
"applicationgateway_project": {
"defaultValue": "",
"type": "String",
"maxLength": 6
},
"applicationgateway_environment": {
"defaultValue": "",
"type": "String",
"maxLength": 7
},
"applicationgateway_uniqueid": {
"defaultValue": "1",
"type": "String",
"maxLength": "1"
},
"vnetName": {
"type": "string",
"metadata": {
"description": "Name of the Virtual Network"
}
},
"subnetName": {
"type": "string",
"metadata": {
"description": "Name of subnet"
}
},
"vnetResourceGroup": {
"type": "string",
"defaultValue": "[resourceGroup().name]",
"metadata": {
"description": "Name of Resource group where Vnet and subnet resides"
}
},
"applicationGatewayTier": {
"type": "string",
"allowedValues": [
"Standard_v2",
"WAF_v2"
],
"defaultValue": "WAF_v2",
"metadata": {
"description": "application gateway tier"
}
},
"frontendPort": {
"type": "int",
"defaultValue": 80,
"metadata": {
"description": "application gateway front end port"
}
},
"secureFrontendPort": {
"type": "int",
"defaultValue": 443,
"metadata": {
"description": "application gateway secure front end port"
}
},
"backendPort": {
"type": "int",
"defaultValue": 80,
"metadata": {
"description": "application gateway back end port"
}
},
"applicationGatewayAutoScaleMinimumCapacity": {
"type": "int",
"defaultValue": 1,
"metadata": {
"description": "Minimum appgateway instance to be running always"
}
},
"applicationGatewayAutoScaleMaximumCapacity": {
"type": "int",
"defaultValue": 10,
"metadata": {
"description": "Maximum appgateway instance that it can scale up."
}
}
},
"variables": {
"basename": "[concat(parameters('applicationgateway_platform'), '-', parameters('applicationgateway_project'), '-', parameters('applicationgateway_location_shortname'), '-', parameters('applicationgateway_environment'))]",
"applicationGatewayName": "[concat(variables('basename'), '-ag-', parameters('applicationgateway_uniqueid'))]",
"publicIPAddressName": "[concat(variables('basename'),'-agip-',parameters('applicationgateway_uniqueid'))]",
"subnetRef": "[concat(resourceId(parameters('vnetResourceGroup'), 'Microsoft.Network/virtualNetworks', parameters('vnetName')), '/subnets/', parameters('subnetName'))]",
"publicIPRef": "[resourceId('Microsoft.Network/publicIPAddresses',variables('publicIPAddressName'))]",
"webApplicationFirewallConfigurationProperties": {
"enabled": true,
"firewallMode": "Detection",
"ruleSetType": "OWASP",
"ruleSetVersion": "3.0"
},
"apiVersion": "2019-09-01"
},
"resources": [
{
"apiVersion": "[variables('apiVersion')]",
"type": "Microsoft.Network/publicIPAddresses",
"name": "[variables('publicIPAddressName')]",
"location": "[resourceGroup().location]",
"sku": {
"name": "Standard"
},
"zones": [],
"properties": {
"publicIPAllocationMethod": "Static",
"dnsSettings": {
"domainNameLabel": "[variables('applicationGatewayName')]"
}
}
},
{
"apiVersion": "[variables('apiVersion')]",
"name": "[variables('applicationGatewayName')]",
"type": "Microsoft.Network/applicationGateways",
"location": "[resourceGroup().location]",
"dependsOn": [
"[variables('publicIPRef')]"
],
"properties": {
"sku": {
"name": "[parameters('applicationGatewayTier')]",
"tier": "[parameters('applicationGatewayTier')]"
},
"gatewayIPConfigurations": [
{
"name": "appGatewayIpConfig",
"properties": {
"subnet": {
"id": "[variables('subnetRef')]"
}
}
}
],
"frontendIPConfigurations": [
{
"name": "appGatewayFrontendIP",
"properties": {
"PublicIPAddress": {
"id": "[variables('publicIPRef')]"
}
}
}
],
"frontendPorts": [
{
"name": "appGatewayFrontendPort",
"properties": {
"Port": "[parameters('frontendPort')]"
}
},
{
"name": "appGatewaySecurePort",
"properties": {
"Port": "[parameters('secureFrontendPort')]"
}
}
],
"backendAddressPools": [
{
"name": "appGatewayBackendPool",
"properties": {
"BackendAddresses": []
}
}
],
"backendHttpSettingsCollection": [
{
"name": "appGatewayBackendHttpSettings",
"properties": {
"Port": "[parameters('backendPort')]",
"Protocol": "Http",
"CookieBasedAffinity": "disabled",
"requestTimeout": 20
}
}
],
"httpListeners": [
{
"name": "appGatewayHttpListener",
"properties": {
"FrontendIpConfiguration": {
"Id": "[concat(resourceId('Microsoft.Network/applicationGateways', variables('applicationGatewayName')), '/frontendIPConfigurations/appGatewayFrontendIP')]"
},
"FrontendPort": {
"Id": "[concat(resourceId('Microsoft.Network/applicationGateways', variables('applicationGatewayName')), '/frontendPorts/appGatewayFrontendPort')]"
},
"Protocol": "Http",
"SslCertificate": null
}
}
],
"requestRoutingRules": [
{
"Name": "basicRule",
"properties": {
"RuleType": "Basic",
"httpListener": {
"id": "[concat(resourceId('Microsoft.Network/applicationGateways', variables('applicationGatewayName')), '/httpListeners/appGatewayHttpListener')]"
},
"backendAddressPool": {
"id": "[concat(resourceId('Microsoft.Network/applicationGateways', variables('applicationGatewayName')), '/backendAddressPools/appGatewayBackendPool')]"
},
"backendHttpSettings": {
"id": "[concat(resourceId('Microsoft.Network/applicationGateways', variables('applicationGatewayName')), '/backendHttpSettingsCollection/appGatewayBackendHttpSettings')]"
}
}
}
],
"enableHttp2": false,
"sslCertificates": [],
"probes": [],
"autoscaleConfiguration": {
"minCapacity": "[parameters('applicationGatewayAutoScaleMinimumCapacity')]",
"maxCapacity": "[parameters('applicationGatewayAutoScaleMaximumCapacity')]"
},
"webApplicationFirewallConfiguration": "[if(equals(toUpper(parameters('applicationGatewayTier')), 'WAF_V2'), variables('webApplicationFirewallConfigurationProperties'), json('null'))]"
}
}
]
}