There are some situations in Galera cluster that joiner node fails to start and in this article we want to show How to troubleshoot Galera cluster joiner node service. If you want to know how to setup Galera cluster, please refer to article Database replication with mariadb on CentOS 7 linux.
In this article we are going to show How to install Wazuh HIDS with Docker on CentOS 7. Wazuh is a free, open-source and enterprise ready fork of OSSec HIDS that goes one step forward and gather and visualize lots of hosts security information. It has been built as a stack of Wazuh, Elastic search […]
There is some situations that we need to use a self-signed certificate and sign it with our self RootCA. for example when you have an internal service that does not offer public access and just needs a certificate to operate securely. So here we need to know how to Create Self-signed Certificate with Self-signed RootCA.
Kafka is an open-source stream-processing software platform developed by the Apache Software Foundation and in this tutorial we gonna to show how to install and configure Kafka on CentOS 7. Imagine that when an event occurs you want to take an action. for example when a user logs in to a system, an email being […]
In this tutorial we show how to Configure FreeIPA replication in CentOS 7. FreeIPA is a free and open source project by RedHat for identity management. FreeIPA helps administrators to manage identity, policy and audit centrally. configuring replication for FreeIPA helps it to be high available in production environments.
In today tutorial we show How to install and configure Varnish cache on CentOS 7. Varnish cache is a high-performance and open source cache server that increase speed of your web server performance by storing web data in a cahce. Here we configure it as a reverse proxy cache server for Apache.
In this tutorial we gonna show how to install and configure HAProxy on CentOS 7. HAProxy is an open source TCP/HTTP load balancer, proxy server and SSL/TLS terminator with high performance and reliability for web sites that have high volume of traffics.
MongoDB is a NoSQL database engine with full flexible index support and rich queries and here we want to show how to install MongoDB on CentOS 7 linux. It is an opensource database engine that stores data as Key-Value in Json format. Some big companies including Adobe, Facebook, Google, eBay, and Coinbase use MongoDB in […]
After an article about installing LiteSpeed, we are gonna show how to install OpenLiteSpeed Web Server on CentOS 7 linux. Unlike LiteSpeed, OpenLiteSpeed is an open source, high performance and lightweight HTTP web server and have a web interface for administration like LiteSpeed.
In previous posts, we demonstrated installing Nginx and Apache web servers. Today we show how to install LiteSpeed web server on CentOS 7 linux. LiteSpeed is a fork of Apache project and has been built to be optimized and generally faster than Apache.