System Administration Guides and Best Practices
Learn system administration with practical guides on user management, services, monitoring, and Linux server management.
The System Administration section focuses on managing and maintaining Linux systems efficiently.
These tutorials cover essential administrative tasks required for servers and production environments.
You can also explore Linux and Networking for deeper insights.
Topics covered
- User and group management
- Service and process management
- System monitoring
- Troubleshooting
Ideal for
- System administrators
- DevOps engineers
105 articles
10 practical examples to export NFS shares in Linux
This tutorial contains a list of nfs exports options in Linux with examples to create NFS share using /etc/exports. You can share with multiple hosts, single or …
Beginners guide to mount NFS share in Linux with examples
Step by step instructions to mount and unmount NFS share in Linux with examples. How to fix umount.nfs4:: device is busy
How to reject mail for unknown users in postfix (local_recipient_maps)
How to reject mail for unknown users on localhost with Postfix with local_recipient_maps with example
How to restrict IP Address to use postfix smtp relay
How can I restrict my postfix smtp relay server to be used by only certain IP Address, How to block or allow postfix relay access using mynetworks example
3 easy steps to configure gmail smtp relay with postfix
Step by step tutorial to configure postfix using third party gmail smtp relay to send mails to external network. Use SASL with Google 2-Step Authentication
8 simple steps to configure ldap client RHEL/CentOS 8
Steps to install and configure ldap client using SSSD on RHEL and CentOS 8 Linux. The configuration using SSSD over TLS and SSL encryption for ldap client
3 simple and useful tools to grep multiple strings in Linux
How to grep multiple strings and patterns in single line from a file in Linux or Unix? Is it possible to grep multiple strings using single command from a file? …
[Solved] Found a swap file by the name .XXX.swp
What is .swp file? Why this file is created? How to get rid of Found a swap file by the name warning? Another program may be editing the same file. An edit …
SOLVED: SSH fails with postponed publickey error
[Solved} Steps to debug and fix postponed publickey error leading to SSH connection failure. You may also get ROOT LOGIN REFUSED, Failed pubkey, permission …
How to transfer files over SSH with SSHFS in Linux & Windows
Step-by-Step Tutorial to transfer files over SSH using SSHFS between two Linux servers or Linux and WIndows server. Copy files between linux and windows using …
5 simple methods to test ssh connection in Linux & Unix
Multiple commands to test ssh connection in Linux and Unix. How to test and check SSH connections with and without shell script examples. Check 22 port status.
Create KVM Virtual Machine using Cockpit UI RHEL CentOS 8
Step-by-Step Tutorial to create KVM Virtual Machine using Cockpit Web Console on RHEL/CentOS 8 Linux. virtual machine creation and management with Cockpit
Create KVM virtual machine | virt-manager | RHEL CentOS 8
Step-by-Step Guide to create KVM Virtual Machine using Virtual Manager in RHEL and CentOS 8 Linux. Create VM, Take Snapshot, Assign Networks using Virtual …
Solved: Kickstart clearpart not working in RHEL CentOS 7 8
Fix kickstart clearpart not working error in RHEl/CentOS 7/8 Linux, kickstart fails to delete existing partitions using zerombr and clearpart in Linux
Kickstart %pre script examples in RHEL CentOS 7 8
Use kickstart %pre script examples to perform tasks before installing the system. Use --interpreter, --log, chroot and nochroot options with %pre script …