Add new ip to existing CosmosDB account via ARM template - azure-resource-manager

Question

I halve arm template that is overwriting existing iprules of cosmosDb account, is it possible to modify arm template so it will only add new ip and not to clean already existing rules.
My template:
{
"type": "Microsoft.DocumentDB/databaseAccounts",
"apiVersion": "2021-10-15",
"name": "cosmosdbaccountname",
"location": "East US",
"properties": {
"ipRules": {
"ipAddressOrRange": "some ip"
}
}
}

Answer 1

If configuring IP Firewall to an already deployed Cosmos account, ensure the locations array matches what is currently deployed. You cannot simultaneously modify the locations array and other properties.
Below example shows how the ipRules property is exposed in API version 2020-04-01 or later:
{
"type": "Microsoft.DocumentDB/databaseAccounts",
"name": "[variables('accountName')]",
"apiVersion": "2020-04-01",
"location": "[parameters('location')]",
"kind": "GlobalDocumentDB",
"properties": {
"consistencyPolicy": "[variables('consistencyPolicy')[parameters('defaultConsistencyLevel')]]",
"locations": "[variables('locations')]",
"databaseAccountOfferType": "Standard",
"enableAutomaticFailover": "[parameters('automaticFailover')]",
"ipRules": [
{
"ipAddressOrRange": "40.76.54.131"
},
{
"ipAddressOrRange": "52.176.6.30"
},
{
"ipAddressOrRange": "52.169.50.45"
},
{
"ipAddressOrRange": "52.187.184.26"
}
]
}
}
Here's the same example for any API version prior to 2020-04-01:
{
"type": "Microsoft.DocumentDB/databaseAccounts",
"name": "[variables('accountName')]",
"apiVersion": "2019-08-01",
"location": "[parameters('location')]",
"kind": "GlobalDocumentDB",
"properties": {
"consistencyPolicy": "[variables('consistencyPolicy')[parameters('defaultConsistencyLevel')]]",
"locations": "[variables('locations')]",
"databaseAccountOfferType": "Standard",
"enableAutomaticFailover": "[parameters('automaticFailover')]",
"ipRangeFilter":"40.76.54.131,52.176.6.30,52.169.50.45,52.187.184.26"
}
}
Refer this configure IP to Cosmos account using ARM