Azure Container Instances (ACI) enables you to run containers on-demand without managing or thinking about the infrastructure below. In summary, it is a serverless container runtime offering. It supports both Linux and Windows containers.
You can deploy Linux containers into an Azure virtual network, which will make them reachable from your networks. If you are using custom DNS resolvers in the VNET where you plan to deploy your ACI, the containers will not inherit that configuration. By default, they will use the Azure DNS service with the virtual IP address of 126.96.36.199.
To specify your custom DNS servers, you need to use YAML file for the deployments. The following is an example of the content of such a file:
apiVersion: '2019-12-01' location: westeurope name: customdns properties: containers: - name: alpine01 properties: image: alpine command: - tail - -f - /dev/null resources: requests: cpu: 1 memoryInGb: 1.5 ports: - port: 80 dnsConfig: nameServers: - 10.10.10.10 10.10.10.11 ipAddress: type: Private ports: - protocol: tcp port: '80' osType: Linux networkProfile: id: /subscriptions/<subscription_id>/resourceGroups/<resource_group>/providers/Microsoft.Network/networkProfiles/<name_of the_profile> type: Microsoft.ContainerInstance/containerGroups
When you execute the “az container create” command to deploy a container group to a subnet, a network profile is created for you. To find out the id of your network profile, use the following command:
az network profile list --resource-group <resource_group_name> \ --query .id --output tsv