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How to Troubleshoot Problems by using logs on Redhat

How Troubleshoot Problems by using logs/Log Files/Systemd-Journald (journalctl) on Redhat 7/Redhat 8/Redhat 9 Logs is a data that main purpose is to store the activity of user’s, application, operating system etc. The main purpose of logs in a machine identify the error for the resolution of issue. In an operating system log files has created of applications, machine activities, and emails for store the information that will help the administrators to identify then resolve the issues. Actually, logs improve the detection of the problem, minimize the response time for resolve issue, increase overall security of the system and identify the breaches. Here we discuss the logs files and logs types of Redhat base operating system that will helpful to identify the issues for resolve. Accurate time of machine is very import for logs; set current time, time zone and NTP synchronization settings of the system if system is using NTP (Network Time Protocol) or chrony. The standard logging system

How to Install and Configure Podman on Redhat 8

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Installation and Configuration of Podman/Docker on Redhat 8/CentOS 8 Container normally work on single process, when container run the process start and container stop working the process of container will stop, but process have multiple process inside it. Redhat have prebuilt runtime Universal Base Image (UBI) that is use for containers for save storage and network utilization when multiple application use same base image. Universal Base Image (UBI) RPM similar to red hat rpm but have limited number of rpms and their updates because UBI is a subset of Red Hat Enterprise Linux. When Universal Base Image (UBI) run on red hat enterprise Linux (RHEL) the repository of RHEL is automatically enable for UBI. Traditionally System Administrators manage disk image, virtual machines to reduce  operational overhead, increase automation, improve reliability and increase security on an organization While Containers have improved the deployment, development, and maintenance of applications. Contai

How to Install and Configure Nginx with Reverse Proxy and Load Balancing on RedHat 8

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Installation and Configuration of Nginx Web Server with Reverse Proxy and Load Balancing use SSL Certificate of Active Directory Certificate Service (ADCS) on RedHat 9/Redhat 8/Redhat 7/CentOS 8/CentOS 7 Nginx is an open source Linux base software that use as a web server, load balancing, reverse proxy, caching, etc. Nginx work as reverse proxy and load balancer for websites on protocol http and https, nginx is also work as proxy server for email that work on protocol IMAP, POP3, and SMTP. Nginx as a Web Server support up to large number of concurrent connections that is 10k, this is the main reason nginx as a web server provide better performance and stability as compare to apache web server on Linux base operating system. Nginx Web Server is the fastest web server available due to its lightweight and non-blocking architecture that use less memory and CPU (Central Processing Unit). The main work of nginx that is famous are reverse proxy and load balancer to facilitate the incoming tra

How to Install and Configure Puppet on CentOS 7

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Installation and Configuration of Puppet on Redhat 9/Redhat 8/Redhat 7/CentOS 8/CentOS 7 Puppet is an open source and enterprise configuration management tool in DevOps. Puppet is use to configuring and managing the puppet client machines that is connect with the puppet server by use of puppet agent. The puppet use languages are Ruby DSL (domain-specific language) and puppet language. The supported platform of puppet are Microsoft Windows, Debian/Ubuntu, Red Hat/CentOS/Fedora and MacOS X.  The configurations that manage the puppet clients save on a puppet server is “config repository”, configuration has written in compiled format (catalog). The files have a configuration that applied on a puppet client machine is called “manifest”, the manifest files extension is “.pp”. The manifest file will create on directory location “/etc/puppet/manifests”, as per need multiple manifests file are create for single purpose is called a module. The module must have readme file with a basic descriptio