This category contains all the Linux, Solaris and ELK based topics.
In this tutorial, I will take you through the steps to create a network bonding/teaming in Linux. Red Hat Enterprise Linux/CentOS 7 allows administrators to bind multiple network interfaces together into a single, bonded, channel. Channel bonding enables two or more network interfaces to act as one, simultaneously increasing the bandwidth and providing redundancy. Network ... Read more
In this article, I will take you through the steps to install all dependent packages without internet on RedHat/CentOS 7 with the help of an example. Sometimes your server resides in private network with no connection to outside world. For installing packages you probably won't be able to use yum package manager to download and ... Read more
In this article, we will look at the top 10 best Linux brctl command examples for Ethernet Network Bridge. brctl command used for ethernet bridges. When you have multiple ethernet interfaces on your server and want to combine and present them as single entity then you need to use the concept of ethernet bridges. For ... Read more
In this tutorial, we will go through top 12 Nmap commands to scan remote hosts. Nmap is a free and open-source network scanner created by Gordon Lyon. Nmap is used to discover hosts and services on a computer network by sending packets and analyzing the responses. Nmap provides a number of features for probing computer ... Read more
In this tutorial, we will go through Elasticsearch Backup and Restore procedure. Elasticsearch is an open source search engine based on Lucene, developed in Java. It provides a distributed and multitenant full-text search engine with an HTTP Dashboard web-interface (Kibana). The data is queried, accessed and stored in a JSON document format. Elasticsearch is a ... Read more
In this article, I will take you through 10 Best ElasticSearch API Query. Elasticsearch is a search engine based on the Lucene library. It provides a distributed, multitenant-capable full-text search engine with an HTTP web interface and schema-free JSON documents. Elasticsearch is developed in Java. Here we will see different types of Elasticsearch api query ... Read more
In this tutorial, I will take you through the steps to install lspci, lsscsi, lsusb, and lsblk tools in RedHat/CentOS 7. In few of the instances we wanted to know the hardware configuration of our Servers. We have some open source tool available which can be used to check those configurations. For e.g: to check ... Read more
In this tutorial, I will take you through the different ways to change date and time in Linux (RedHat/CentOS 7). Sometimes it is very important to have correct date and time in your Linux Server. Change Date and Time in Linux timedatectl is the command to change date and time in RedHat/CentOS7. We will go ... Read more
In this tutorial, I will take you through the steps to enable ssh on Ubuntu(18.04/17.04/16.04). OpenSSH is a freely available version of the Secure Shell (SSH) protocol family of tools for remotely controlling, or transferring files between, computers. Traditional tools used to accomplish these functions, such as telnet or rcp, are insecure and transmit the ... Read more
In this article, i will take you through the steps to update or upgrade CentOS 7.0 / 7.1 / 7.2 / 7.3 / 7.4 / 7.5 / 7.6 to CentOS 7.7. CentOS is a Linux distribution that provides a free, community-supported computing platform functionally compatible with its upstream source, Red Hat Enterprise Linux. Upgrade CentOS ... Read more