Default repositories in CentOS 7 prioritize MariaDB over MySQL. Executing standard installation commands will result in MariaDB being deployed instead. To utilize the official MySQL packages via the package manager, the specific repository configuration must be added mnaually. Configure the Official...
Shell scripts rely on comparison operators to evaluate conditions. These operators are primarily used with the [ ] test construct or the test command. They are categorized based on the data they evaluate: files, strings, and integers. File Test Operators These operators check the properties of a fil...
Filesystem capacity reports from df -h and du -sh can diverge, often because of deleted files that remain locked by running processes. On a CentOS 6.5 host, the root partition /dev/mapper/VolGroup-lv_root showed 44 GB used out of 50 GB, while the sum of du -sh / (excluding subvolume mounts) added up...
Understanding CPU Usage Computation CPU usage essentially measures the time a processor spends executing a process. In Linux systems, this execution time is tracked in units called jiffies. By calculating jiffies * HZ, we can determine the CPU time consumed by a process. Dividing this value by the t...
Launching Redis with Sentinel on Linux Redis is a popular in‑memory data store used for caching and improving application performance. To maintain uptime and automatically handle failures, the Sentinel system provides monitoring, notification, and automatic failover for Redis instances. This article...
Windows 10 System ConfigurationSystem ConfigurationDisable Windows Update and Microsoft Store automatic updatesTemporarily disable Windows Defender real-time protection and SmartScreenConfigure Group Policy Editor (gpedit.msc): disable automatic updates, prevent driver auto-updates, configure Window...
1. Create the /opt/rocketmq/docker-compose.yml and /opt/rocketmq/broker.conf configuration files 2. Configure docker-compose.yml with the management interface port set to 8090 version: '3.5' services: rmqnamesrv: image: foxiswho/rocketmq:server container_name: rmqnamesrv ports: - 9876:9876 networks:...
In Linux, every file is associated with an inode—an index node storing metadata such as size, timestamps, ownership, and a pointer to the actual data blocks. The inode serves as the true identifier for a file; filenames are merely references. File contents reside in data blocks referenced via their...
When deploying applications to production servers, ensuring that backend services remain running continuously is a critical operational concern. This guide covers two essential techniques: using the nohup command to maintain service persistence and managing thread execution modes in Python applicat...
MySQL functions as a scaalble relational database engine optimized for web environments and enterprise applications. Its architecture utilizes multiple storage engines, such as InnoDB for transactional integrity and MyISAM for read-heavy workloasd. By leveraging standard SQL protocols, it interfaces...