A sudden increase in server load can be alarming, especially on production systems. One common and often misunderstood cause is an active RAID resync or rebuild process. When a RAID array is rebuilding, the system performs intensive disk I/O operations, which can significantly impact overall server performance. Understanding how to identify and safely manage RAID rebuild load is essential for Linux administrators. Identifying RAID Rebuild Activity The first step when investigating unexplained load spikes on a Linux server is to check the RAID status using the following command: cat /proc/mdstat This file provides real-time information about all active software RAID arrays. If a rebuild or resync is in progress, you may see output similar to: md0 : active raid1 sda4[0] …

Setting the correct time zone on a Linux server is important for logs, cron jobs, monitoring tools, and applications. A wrong time zone can create confusion while debugging or tracking events. This guide explains both the modern and legacy ways to change the time zone in Linux. Step 1: Check the Current Time Zone Login to the server as root or a user with sudo access and run: date Example output:   Wed Sep 12 15:13:14 IST 2012 Here, IST is the current time zone. Recommended Method (Modern Linux Systems) This method works on RHEL 7+, CentOS 7+, Rocky Linux, AlmaLinux, Ubuntu 16.04+, Debian, and most systemd-based systems. Step 2: List Available Time Zones timedatectl list-timezones   You can scroll and …

Tmux is a software application that can be used to multiplex several virtual consoles, allowing a user to access multiple separate terminal sessions inside a single terminal window or remote terminal session. It is similar to screen as it lets you run numerous TTYs in the same terminal window. Tmux is a software application that can be used to multiplex several virtual consoles, allowing a user to access multiple separate terminal sessions inside a single terminal window or remote terminal session. It is similar to screen as it lets you run numerous TTYs in the same terminal window. To install Tmux, the following libraries should be installed on the server. libevent , libevent-devel How to install Tmux ? Download tmux …

an secure Mysql service using the following methods. 1. Restrict anonymous remote access :- Which meansnever provide grant access from all hosts. It must limit to specific users from specific hosts only. Do not grant the SUPER privilege and FILE privilege to non-administrative users. Any user who has this privilege can write a file anywhere in the file system with the privileges of the mysqld daemon. 2. Improve local security :- To improve local security use different socket file for both client and server connections. For that edit and add following line in the [client] section of /etc/my.cnf: [client] socket = /tmp/mysql.sock Also the following parameter should be added in the [mysqld] section in /etc/my.cnf: set-variable=local-infile=0 3. Change admin password …

1.Click Start, Programs, Administrative Tools, and select Internet Information Services (IIS) Manager. 2.Expand local computer and right click on Web Sites 3.Click New and select Web Site 4.Click Next to begin. 5.Type in a description for the website. This is usually the domain name but can be anything that we prefer to distinguish the site from others. 6.Click Next. 7.Type in the IP address of our new site. TCP port should be 80. * If the site is an IP-based site we can leave the host header line blank. *If the site is a name-based site we will need to enter the domain name in the host header line. If we prefer to view the name-based site using the IP …

Magic quotes is a module of php which was implemented in older versions of PHP. In latest versions, the module is depreciated. It is for the purpose of processing of escaping special characters with a ‘\’ to allow a string to be entered into a database. There are three magic quote directives: magic_quotes_gpc :- Affects HTTP Request data (GET, POST, and COOKIE). Cannot be set at runtime, and defaults to on in PHP. magic_quotes_runtime:- If enabled, most functions that return data from an external source, including databases and text files, will have quotes escaped with a backslash. Can be set at runtime, and defaults to off in PHP. magic_quotes_sybase :- If enabled, a single-quote is escaped with a single-quote instead …