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Developer tools · #centos
Learn how to architect systems using CentOS Stream, focusing on its role as an upstream buffer for RHEL and how to manage the risks of a rolling-release model.
CentOS Stream’s rolling‑release model changes the way you manage OS updates. Learn how to handle package drift, testing, and CI integration for production workloads.
Learn how to manage network traffic in CentOS using Firewalld zones, including the critical difference between runtime and permanent rules to prevent configuration loss.
A diagnostic guide for CentOS administrators to resolve 'Disk Full' errors, distinguishing between byte capacity and inode exhaustion in /var/log.
Goal Determine how to reliably toggle an SELinux boolean on CentOS and ensure the change survives a reboot, while also understanding the impact on already-running containers. Current behavior The semanage boolean tool updates the active boolean file, but the kernel does not reload the value until a reboot or a setsebool -P command is issued. On CentOS 8 and
Background CentOS 8 replaces the legacy yum binary with dnf , retaining a yum symlink for backward compatibility. The symlink masks underlying differences in dependency resolution, exit codes, and option handling (e.g., --setopt ). Scripts that rely on exact yum output or exit status may fail silently when dnf is invoked through the alias. Unresolved Decisio
I am trying to run a CentOS 8 server through VirtualBox (6.1.30) ( Vagrant ), which worked just fine yesterday for me, but today I tried running a sudo yum update . I keep getting this error for some reason: [vagrant@192.168.38.4] ~ >> sudo yum update CentOS Linux 8 - AppStream 71 B/s | 38 B 00:00 Error: Failed to download metadata for repo 'appstream'
Goal To have a Podman container automatically start, stop, and restart on boot using a systemd unit file generated by podman generate systemd on CentOS 8 Stream. Constraints & Uncertainty The generated unit must include proper ExecStart and ExecStop directives, and optional resilience settings like Restart=always . The container may require additional sy
When I tried to Scan the /home directory I got this error. [root@ip-172-31-34-67 ~]# clamscan /home LibClamAV Error: cli_loaddbdir(): No supported database files found in /var/lib/clamav ERROR: Can't open file or directory ----------- SCAN SUMMARY ----------- Known viruses: 0 Engine version: 0.103.0 Scanned directories: 0 Scanned files: 0 Infected files: 0 D
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