Freaks City

While the standard Percona Monitoring Plugins provide a robust baseline, they often omit critical database performance indicators such as Queries Per Second (QPS), Transactions Per Second (TPS), and Input/Output Operations Per Second (IOPS). To maintain comprehensive observability, the monitoring configuration must be extended to include these ...

In Linux, there are several ways to execute commands that continue running even after you close your terminal session: Background execution with &: The ampersand symbol allows a command to run in the background. However, if you close your terminal (like Xshell), the process will terminate. nohup command: This allows a command to keep runni ...

System Account and SSH Automation Setup Establishing a dedicated service account with passwordless SSH access streamlines the deployment workflow for all cluster components. # Provision the deployment user and assign passwordless sudo rights sudo useradd -m -s /bin/bash ds_user echo "ds_user:SecurePass123" | sudo chpasswd sudo tee -a ...

Memory Units and General SettingsRedis configuration supports standard memory units. Units are case-insensitive, meaning 1GB, 1Gb, and 1gb are equivalent.1kb = 1024 bytes1k = 1000 bytes1mb = 1024*1024 bytes1m = 1000000 bytesBy default, Redis runs in the foreground. To run as a background daemon, modify the daemonize setting.daemonize yes pidfil ...

Creating a Bootable USB Drive Download the ISO from a local mirror, such as Alibaba Cloud, or the official site, wich automatically selects the fastest route. When using tools like UltraISO, select RAW mode for writing the image to avoid many common issues. Alternatively, write the USB on Linux: sudo dnf install -y epel-release ntfsprogs ntfs ...

This feature modifies the sudo command's behavior to present lighthearted remarks when an incorrect password is entered, offering an alternative to the standard error message. It serves as a minor customization that can introduce amusement or serve as a conversational piece. Enabling the Insults Feature Activate this functionality by adding a s ...

Upgrading Python from 2.7 to 3.6 Legacy virtual machines often default to Python 2.7. Verify the current installation: which python ls -lah /usr/bin/python Install Python 3.6: yum install epel-release yum install python36 cd /usr/bin/ rm python ln -s python3.6 python python --version After installation, Python 3.6 will be available at /usr/bi ...

Package Management with YUMOn RPM-based distributions like CentOS or RHEL, the yum package manager is the standard tool for software management.Installing Software:yum install package_name # Example: yum install htop Removing Software:yum remove package_name # Example: yum remove htop Searching for Packages: Supports fuzzy matching to find rele ...

Operating System Overview An operating system serves as the bridge between hardware and software, managing device resources while providing interfaces for users and applications. Classification Ctaegory Examples Desktop OS Windows, Linux, macOS Server OS Linux, Windows Server Embedded OS Linux Mobile OS iOS, Android Directory St ...

getty is a system program on Linux and Unix systems that handles the initialization and management of physical or virtual terminal (TTY) connections. Its primary function is to listen for a connection on a specified TTY, prompt for a username, and then execute the login program to authenticate the user. This command is typically included in the ...