syslogs which gets messages sent in systemd-journald and stored the data in the disk. To view the systemd messages execute journalctl and can be used with additional parameters. In this post we are going to see quick howto use journalctl command and how to use it
SMTP Reply codes are used to determine the error in the message, SMTP(Simple Mail Transfer Protocol) is a standard protocol for sending emails, the client sends and the server responds, a response is with the 3 digit code which contains the meaning for the response with the codes, find the below SMTP reply codes
In this post we are going to see how to write a script to find the subnet calculator, we are using korn shell to write. the interpreter we are going to use /bin/ksh, the korn shell supports MacOS, Linux and Unix flavours. This will be helpful for assign the ip address to the server ip planning.
UNIX shell programs executes the user command. User can enter like a command directly or executes a set of commands from a file called as a script file or program. Shell scrips are not compiled, it is interpreted executes line by line.
In this post we are going to see Linux user and group administration, this is applicable for RHCSA Exam for RHEL 8 / 7 versions. We are going to see Linux users and group creation, modification, deletion. Managing user and group can be done by command or GUI tools
What is CentOS
CentOS is a reproduction of Redhat enterprise Linux(RHEL), CentOS is a stable release unlike Fedora it is a beta version of RHEL, CentOS provides regular updates and security patches like Redhat. CentOS is open source platform, so anyone can download and use it it and distribute for free.
In general the version control is used to preserve the changes made in a software codes, documents and other formats. For example if a group people are accessing the documents like release notes or instructions, if someone edits, so that we can find what he has changed from the previous versions, so that we can able to restore the changes made and back to original. we have the history of documents that are stored in version controlled.
Most of the Linux operating system is free to download, under GPL license anyone can download the software and use it, there are lot of distributions are available. Linux is a collection of softwares based on the Kernel.
And also linux operating system receives free updates, patches and security updates frequently. In this blog we will see Linux distributions which are frequently used and their download link.
Splunk software is used as a monitoring, searching, tracking structures and unstructured data for analyzing, Splunk is a machine learning mechanism captures, indexes, and get real-time data and convert into graphics like reports, alerts and dashboard, depending upon our needs we can generate it.
Splunk analyze high voulme of datas, using splunk API we can integrate lot of application in to the splunk, Lot of plungs are available in the splunkbase place. Few most common API are useful integrating splunk with VMWare, Splunk with OS logs to monitor availbility. Splunk with Service now.
Terraform infrastructure provisioning
Automating infrastructure as a code is ease by using terraform, we can use terraform to build servers as Infrastructure as a code, We can build easily using terraform in AWS, Azure, VMWare environments easily with simple codes. This will help us to minimize work load. There are lot of tools in market like general purpose continuous integration , but terraform allows us to make more efficient and convenient and powerful. create resources on demand