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
How to run script after N minutes of boot with systemd CentOS/RHEL 7/8
How to execute command or run script after N minutes of boot using systemd timer in CentOS/RHEL 7/8 Linux fix systemctl failing with unknown section 'Timer'
How to run script with systemd at shutdown only (not at reboot)
Steps to run script with systemd at shutdown only with examples in CentOS/RHEL 7/8 in Linux. Run script or command before shutdown but not at reboot
Shell script to resize image, convert image format in Linux
Steps to convert image format, resize image percentage, scale using imagemagick in linux. shell script to batch resize image and convert image format in linux.
How to PROPERLY boot into single user mode in RHEL/CentOS 7/8
linux single user mode, centos 7 single user mode, rhel 7 single user mode, single user mode linux, how to boot into single user mode linux, centos single user …
10 basic & powerful commands to check file system type in Linux/Unix
Learn how to check file system type in Linux and Unix using different commands methods. lslbk, blkid, df, findmnt and more to list and determine filesystem type …
How to configure ssh host based authentication per user (CentOS/RHEL 7/8)
Configure SSH Host Based Authentication using sshd_config, shosts,equiv per user RHEL/CentOS 7/8. Compare Host based authentication vs public key authentication …
Configure postfix mail server and client with examples (CentOS/RHEL 7/8)
Configure postfix mail server and client using SMTP relay server. Check SMTP server configuration and connection with SWAKS. SMTP Mail Server CentOS/RHEL 7/8
Configure xfs quota (user, group and project quota) CentOS/RHEL 7/8
Configure xfs quota for user, group, projects (disk). Check and Modify XFS quota grace period. Enable and Disable XFS Quota in RHEL/CentOS 7/8 with examples
Steps to configure Chrony as NTP Server & Client (CentOS/RHEL 8)
Steps to configure Chrony as NTP Server and NTP Client. Monitor the NTP traffic using tcpdump. Chrony force sync with NTP Server. Check the status of NTP sync
Steps to join/add CentOS 8 to Windows Domain Controller (RHEL 8)
Step by step tutorial to join or add CentOS 8 to Windows Domain Controller running on Windows Domain Controller Active Directory on 2012 R2 using winbind RHEL 8 …
How to enable SSH access & configure network in rescue mode (CentOS/RHEL
Steps to enable SSH access in linux rescue mode and configure network in rescue mode in RHEL/CentOS 7/8 with example transfer sosreport file inst.sshd=1
How to mount partition using systemd unit file? [SOLVED]
Steps to automount file system using systemd automount unit file without /etc/fstab to automatically mount and unmount file system in rhel/centos 7 and 8
How to mount filesystem without fstab using systemd (CentOS/RHEL 7/8)
We mount filesystem using /etc/fstab to make the changes persistent across reboot. Now there is another way to mount filesystem without fstab using systemd.
2 ways to update and rebuild initrd image in CentOS/RHEL 7 and 8
Steps to extract, modify, update and rebuild initrd image in CentOS RHEL 7 and 8 ISO DVD with examples using XZ / LZMA format Update initrd with modules drivers …
How to properly update kernel in RHEL/CentOS 7/8 Linux
Steps to update kernel properly in production environment with examples. Precautions to be considered before and after you update kernel in RHEL/CentOS 7 and 8