ARM Templates Contd..
- Using variables in ARM Templates: Refer Here
- Variables are values which are used often in the template but not expected to passed as input
- Refer Here for the changes done
- Added primary and secondary databases in two different regions Refer Here for the changes done.
- Refer Here for the documentation of outputs section.
- Refer Here for the outputs section added
- The template so far
{
"$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"parameters": {
"primaryregion": {
"type": "string",
"metadata": {
"description": "This is the primary region"
},
"defaultValue": "southindia"
},
"secondaryregion": {
"type": "string",
"metadata": {
"description": "This is the primary region"
},
"defaultValue": "centralindia"
},
"primary-cidr": {
"type": "string",
"metadata": {
"description": "This is the primary vnet address space"
},
"defaultValue": "10.0.0.0/16"
},
"secondary-cidr": {
"type": "string",
"metadata": {
"description": "This is the secondary vnet address space"
},
"defaultValue": "10.1.0.0/16"
},
"subnet-names": {
"type": "array",
"metadata": {
"description": "subnet name"
},
"defaultValue": [ "web", "app", "db", "mgmt" ]
},
"primary-subnet-cidr-format": {
"type": "string",
"metadata": {
"description": "subnet cidr format"
},
"defaultValue": "10.0.{0}.0/24"
},
"secondary-subnet-cidr-format": {
"type": "string",
"metadata": {
"description": "subnet cidr format"
},
"defaultValue": "10.1.{0}.0/24"
},
"dbusername": {
"type": "string",
"metadata": {
"description": "username of the database"
},
"defaultValue": "qtdevops"
},
"dbpassword": {
"type": "securestring",
"metadata": {
"description": "Password for the database server"
}
}
},
"variables": {
"primary-vnet-name": "ntier-primary-vnet",
"secondary-vnet-name": "ntier-secondary-vnet",
"randomValue": "[uniqueString(resourceGroup().id)]",
"primary": "primary",
"secondary": "secondary",
"primary-db-server": "[format('qtdbsrv{0}{1}',variables('primary'), variables('randomValue'))]",
"primary-db": "[format('qtdb{0}',variables('primary'))]",
"secondary-db-server": "[format('qtdbsrv{0}{1}',variables('secondary'), variables('randomValue'))]",
"secondary-db": "[format('qtdb{0}',variables('secondary'))]"
},
"resources": [
{
"type": "Microsoft.Network/virtualNetworks",
"apiVersion": "2020-11-01",
"name": "[variables('primary-vnet-name')]",
"location": "[parameters('primaryregion')]",
"properties": {
"addressSpace": {
"addressPrefixes": [ "[parameters('primary-cidr')]" ]
}
}
},
{
"type": "Microsoft.Network/virtualNetworks/subnets",
"apiVersion": "2020-11-01",
"name": "[format('{0}/{1}',variables('primary-vnet-name'),parameters('subnet-names')[copyIndex()])]",
"properties": {
"addressPrefix": "[format(parameters('primary-subnet-cidr-format'),copyIndex())]"
},
"copy": {
"name": "primary-subnet-copy",
"count": "[length(parameters('subnet-names'))]",
"mode": "Serial"
},
"dependsOn": [
"[resourceId('Microsoft.Network/virtualNetworks',variables('primary-vnet-name'))]"
]
},
{
"type": "Microsoft.Network/virtualNetworks",
"apiVersion": "2020-11-01",
"name": "[variables('secondary-vnet-name')]",
"location": "[parameters('secondaryregion')]",
"properties": {
"addressSpace": {
"addressPrefixes": [ "[parameters('secondary-cidr')]" ]
}
}
},
{
"type": "Microsoft.Network/virtualNetworks/subnets",
"apiVersion": "2020-11-01",
"name": "[format('{0}/{1}',variables('secondary-vnet-name'),parameters('subnet-names')[copyIndex()])]",
"properties": {
"addressPrefix": "[format(parameters('secondary-subnet-cidr-format'),copyIndex())]"
},
"copy": {
"name": "secondary-subnet-copy",
"count": "[length(parameters('subnet-names'))]",
"mode": "Serial"
},
"dependsOn": [
"[resourceId('Microsoft.Network/virtualNetworks',variables('secondary-vnet-name'))]"
]
},
{
"name": "[variables('primary-db-server')]",
"type": "Microsoft.Sql/servers",
"apiVersion": "2014-04-01",
"location": "[parameters('primaryregion')]",
"tags": {
"displayName": "primary-sql-server"
},
"properties": {
"administratorLogin": "[parameters('dbusername')]",
"administratorLoginPassword": "[parameters('dbpassword')]"
},
"resources": [
{
"type": "firewallRules",
"apiVersion": "2014-04-01",
"dependsOn": [
"[resourceId('Microsoft.Sql/servers', variables('primary-db-server'))]"
],
"location": "[parameters('primaryregion')]",
"name": "PrimaryServerFirewall",
"properties": {
"startIpAddress": "0.0.0.0",
"endIpAddress": "255.255.255.255"
}
}
]
},
{
"name": "[format('{0}/{1}',variables('primary-db-server'),variables('primary-db'))]",
"type": "Microsoft.Sql/servers/databases",
"apiVersion": "2014-04-01",
"location": "[parameters('primaryregion')]",
"tags": {
"displayName": "primarysqldb"
},
"dependsOn": [
"[resourceId('Microsoft.Sql/servers', variables('primary-db-server'))]"
],
"properties": {
"collation": "SQL_Latin1_General_CP1_CI_AS",
"edition": "Basic",
"maxSizeBytes": "1073741824",
"requestedServiceObjectiveName": "Basic"
}
},
{
"name": "[variables('secondary-db-server')]",
"type": "Microsoft.Sql/servers",
"apiVersion": "2014-04-01",
"location": "[parameters('secondaryregion')]",
"tags": {
"displayName": "secondary-sql-server"
},
"properties": {
"administratorLogin": "[parameters('dbusername')]",
"administratorLoginPassword": "[parameters('dbpassword')]"
},
"resources": [
{
"type": "firewallRules",
"apiVersion": "2014-04-01",
"dependsOn": [
"[resourceId('Microsoft.Sql/servers', variables('secondary-db-server'))]"
],
"location": "[parameters('secondaryregion')]",
"name": "SecondaryServerFirewall",
"properties": {
"startIpAddress": "0.0.0.0",
"endIpAddress": "255.255.255.255"
}
}
]
},
{
"name": "[format('{0}/{1}',variables('secondary-db-server'),variables('secondary-db'))]",
"type": "Microsoft.Sql/servers/databases",
"apiVersion": "2014-04-01",
"location": "[parameters('secondaryregion')]",
"tags": {
"displayName": "secondarysqldb"
},
"dependsOn": [
"[resourceId('Microsoft.Sql/servers', variables('secondary-db-server'))]"
],
"properties": {
"collation": "SQL_Latin1_General_CP1_CI_AS",
"edition": "Basic",
"maxSizeBytes": "1073741824",
"requestedServiceObjectiveName": "Basic"
}
}
],
"outputs": {
"primary-db-server": {
"type": "string",
"value": "[reference(resourceId('Microsoft.Sql/servers',variables('primary-db-server'))).fullyQualifiedDomainName]"
},
"secondary-db-server": {
"type": "string",
"value": "[reference(resourceId('Microsoft.Sql/servers',variables('secondary-db-server'))).fullyQualifiedDomainName]"
}
}
}
- Exercise: Try adding a primary web server in websubnet with public ip and secondary webserver in web subnet of secondary vnet with public ip
