Linux Performance is an important task for Linux admins. Irqbalance is a command-line tool that distributes hardware interrupts across processors to improve system performance. We will cover irqbalance service today to see why we can get better network and storage performance by enabling it. What is irqbalance? Irqbalance is a daemon to help balance the …
Linux
Linux is a multi-user system. It is always important to know who has logged into your Linux box. This isn’t just to help track the activities of malicious users, but mostly to figure out who made the mistake that crashed the system. We collect 6 Linux commands for this task. The following Linux commands can …
Checking remote port status is a common task for Linux admin. Now we collect 6 different ways for this task. We don’t need to install any package if we use the following two python commands. We need to install the package if we choose nc, nmap,telnet. Methods to check if a remote port is open …
Pip is the package installer for Python. We can use pip to install packages that are not distributed as part of the standard library from the Python Package Index and other indexes. How to install Pip on Linux? How to install & remove a python package with Pip Install a python package with a specific …
DHCP is a network protocol used on IP networks where a DHCP server automatically assigns an IP address and other information to each host on the network. We can use tcpdump command to filter DHCP packets. How DHCP Works? DHCP operations fall into four phases: server discovery, IP lease offer, IP lease request, and IP …
Tcpdump is a powerful command-line packet analyzer. It allows us to display TCP/IP and other packets being transmitted or received over a network. We collect 30 tcpdump filters to help you learn tcpdump quickly. 30 tcpdump examples to filter packets Switch Syntax Description -i any tcpdump -i any Capture from all interfaces -i eth0 tcpdump …
Many people choose free open source software to monitor Cassandra cluster to save cost. In our env, we use telegraf/Influxdb/Grafana to monitor Cassandra performance. This monitoring package is open source. We can download and use them for free. Use TIG to monitor Cassandra performance Configuration file for Cassandra Monitoring Cassandra performance metrics Use TIG to …
Linux is very popular now. But what is Linux? To understand what Linux is, it is necessary to first explain what OS is and a little about its component parts. We collect 4 basic questions to help you understand what Linux is. What is an Operating System? An operating system consists primarily of three things: …
Linux commands are very important for Linux Beginners. These 20 important Linux Commands will be very useful for you. In this article, I will show you the 10 basic Linux commands and 10 advanced commands that every beginner must know. pwd – Print Working Directory ls – List files and directories cd – Change directory …
Linux Multipath command is used to manage storage SAN (storage area network) disks on OS side. Linux multipath provides a way of organizing the I/O paths logically, by creating a single multipath device on top of the underlying devices. Start multipath on Linux List multipath devices on Linux Get Disk WWID ( SCSI ID ) …