The Database Mail component is used in Microsoft SQL Server to send an SMTP notification to an administrator’s mailbox. You can enable and configure Database Mail to receive various email notifications about events on the MSSQL server.
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By default, a running app in Windows can run on any of the available CPU cores. The operating system manages and distributes processes between cores. However, you can manually bind certain processes (applications) to processor cores in Windows using the Processor Affinity feature. Let’s see how to bind a program (process) to specific CPU cores in Windows.
OpenVPN client on Windows with default settings only supports one active VPN connection. When installing OpenVPN on Windows, only one virtual adapter of the TAP or Wintun type is created. If you want to connect to multiple OpenVPN servers at the same time, you need to create an additional WinTAP or Wintun network adapter.
If you try to start another VPN connection, an error will appear:
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When a Docker container starts up, it gets a dynamic IP address by default. In this article, we will show you how to assign a static IP address to a specific Docker container.
If you clone Linux virtual machines on your hypervisor (whether it be VMware ESXi, Hyper-V, or KVM/Proxmox), they will get the same IP address from the DHCP server after powering on, even if the VMs have different MAC addresses.
You can use Wireguard to connect branch office LANs with a site-to-site VPN. In this article, we will set up a site-to-site VPN using Wireguard and configure routing between networks using an rpm-based distro (RHEL/CentOS/Oracle/Rocky Linux).
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Several times I came across a situation where one of the users on a Windows Server host with an RDS (Remote Desktop Services) role ran an application that leaked and occupied all available RAM. It was impossible to connect to such a host via RDP remotely. To kill the leaked process, you need to remotely logoff this user.
Some administrators use sed or regular expressions to replace variable values in structured files (JSON or YAML). This doesn’t always give a good result. It is much easier to use the jq or yq tools to process structured files.
Continue reading “How to Replace Variable Value in JSON or YAML File?”
I ran into a strange issue while establishing an RDP connection to a Windows Server 2019 RDS host from Windows 11 via VPN.
In this article, we will show some options for backing up virtual machines on a KVM hypervisor, as well as recovery scenarios. I would like to note that there are no convenient backup tools for KVM, and every administrator uses their own methods and scripts. There are two backup scenarios in KVM: when a VM is stopped (the easiest one, but rarely used) and without stopping the virtual machine.
