This post describe about how to change Hostname in your CentOS 7 or RHEL 7 using commands. Before that we need to understanding Hostname, its divided into three classes are static, pretty, and transient.

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If you are using VPS server or need remote access to a machine we will probably use SSH connection. Use modern cryptography methods for privacy and protect from an unsecured, unsafe network. The basic SSH secure to do few updates.

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PostgreSQL is an open source and powerful database system, its executes on all major operating system like, Linux, Unix, Mac, etc. This post describes to install the pgSQL in Fedora or CentOS operating system.

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VSFTPD is an open source for uploading files to a server. Its very fast and secure files transfer.

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Whenever you may received following error while installing package or update in your CentOS or Fedora,

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Unfortunately if you have changed files and directories permission to 777. You can not reset root password and logged into user account including graphically.

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Assume that, if you are working in Data Center or running your application in VPS server, we can change static IP Address without downtime and reboot your Server.

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