Terraform is a tool to create virtual machines. It is usually not used to configure and manage them. Ansible is a tool to configure and manage virtual machines. To do this, Ansible will need an inventory file. Since Terraform was…
Azure resources can be moved to a new subscription, or across regions. This can be accomplished by clicking through the Azure portal, but can be also automated using the azure-cli. Both the source group and the target group are locked…
OpenSSH is the open-source version of the Secure Shell (SSH) tools used by administrators of Linux and other non-Windows for cross-platform management of remote systems. OpenSSH has been added to Windows (as of autumn 2018), and is included in Windows…
Traefik is an open-source Edge Router that makes publishing your services a fun and easy experience. It receives requests on behalf of your system and finds out which components are responsible for handling them. The following code snipped is a docker-compose file to…
Installing Ubuntu/Debian updates manually for each machine individually is quite inefficient and you usually want to automate this task. The following Ansible playbook installs Ubuntu/Debian updates on a group of machines in parallel.
In cloud environments virtual hard disk have limits. No only for disk sizes but also for IO performance. Usually IO performance is dependent on disk size which means, if you need more IOPs you have to use a bigger disk.…
If you fully automate an IT infrastructure you sometimes need the individual IP addresses of each host of an host group. For example when you configure a loadbalancer or a reverse proxy and need to enter the IP addresses of…
If you provision Ubuntu VMs on Azure which have an additional data disk, you can not be sure that the data disk is The reason is that there are Azure VMs sizes which by default have a temporary storage…
On different hypervisor platforms VMs have different properties. For example the naming of network interface is different. Sometimes the ordering of virtual disk is different, which results also in different device naming. Therefor it is necessary to detect the underlying…