https://blog.gntech.me/tags/linux/ Recent content in Linux on GnTech Blog Hugo en-us Sat, 20 Jun 2026 10:30:00 -0400 https://blog.gntech.me/posts/2026-06-20-homelab-10gbe-networking-mikrotik-proxmox/ Sat, 20 Jun 2026 10:30:00 -0400 https://blog.gntech.me/posts/2026-06-20-homelab-10gbe-networking-mikrotik-proxmox/ Plan and deploy 10GbE networking for your homelab — MikroTik CRS switch configuration, SFP+ cabling choices, Proxmox host integration, and Linux NIC tuning for maximum throughput. https://blog.gntech.me/posts/2026-06-18-linux-tcp-bbr-congestion-control-proxmox-docker-lxc/ Thu, 18 Jun 2026 14:30:00 -0400 https://blog.gntech.me/posts/2026-06-18-linux-tcp-bbr-congestion-control-proxmox-docker-lxc/ Step-by-step guide to enabling TCP BBR congestion control on Linux for Proxmox hosts, Docker containers, and LXC. Includes sysctl tuning, kernel module loading, iperf3 benchmarks, and practical performance gains for homelab and remote streaming. https://blog.gntech.me/posts/2026-06-17-cgroups-v2-docker-container-resource-limits/ Wed, 17 Jun 2026 13:30:00 -0400 https://blog.gntech.me/posts/2026-06-17-cgroups-v2-docker-container-resource-limits/ Deep dive into Linux cgroups v2 for Docker container resource control — memory.max/high, CPU quotas, I/O weights, PSI monitoring, and docker-compose deploy.resources configurations for homelab. https://blog.gntech.me/posts/2026-06-17-cilium-cni-k3s-ebpf-networking-homelab/ Wed, 17 Jun 2026 11:00:00 -0400 https://blog.gntech.me/posts/2026-06-17-cilium-cni-k3s-ebpf-networking-homelab/ Replace K3s default Flannel with Cilium CNI for eBPF-powered networking, kube-proxy replacement, Hubble observability, and identity-based network policies in your homelab. https://blog.gntech.me/posts/2026-06-16-proxmox-firewall-security-hardening/ Tue, 16 Jun 2026 17:00:00 -0400 https://blog.gntech.me/posts/2026-06-16-proxmox-firewall-security-hardening/ Harden Proxmox VE with datacenter-level firewall rules, dynamic IPSets for trusted management networks, fail2ban protection, and cluster-wide security policies. https://blog.gntech.me/posts/2026-06-16-container-runtimes-runc-vs-crun-docker/ Tue, 16 Jun 2026 14:30:00 -0400 https://blog.gntech.me/posts/2026-06-16-container-runtimes-runc-vs-crun-docker/ Compare runc and crun container runtimes for Docker in your homelab. Benchmark startup times, memory usage, and io_uring support. Switch runtimes in minutes with a simple daemon.json change. https://blog.gntech.me/posts/2026-06-15-docker-overlay2-storage-driver-linux-guide/ Mon, 15 Jun 2026 18:30:00 -0400 https://blog.gntech.me/posts/2026-06-15-docker-overlay2-storage-driver-linux-guide/ Deep dive into Docker's overlay2 storage driver on Linux — how layers work, managing disk space, troubleshooting common issues, and performance tuning for homelab deployments. https://blog.gntech.me/posts/2026-06-15-samba-file-server-proxmox-lxc-zfs/ Mon, 15 Jun 2026 14:30:00 -0400 https://blog.gntech.me/posts/2026-06-15-samba-file-server-proxmox-lxc-zfs/ Build a lightweight, high-performance Samba NAS inside a Proxmox LXC with direct ZFS dataset passthrough. Covers privileged LXC setup, UID mapping, performance tuning, and backup integration. https://blog.gntech.me/posts/2026-06-13-podman-rootless-containers-docker-alternative-homelab/ Sat, 13 Jun 2026 14:00:00 -0400 https://blog.gntech.me/posts/2026-06-13-podman-rootless-containers-docker-alternative-homelab/ Migrate from Docker to rootless Podman for safer homelab deployments. Installation, podman-compose, Quadlets, rootless networking, and Docker migration strategies. https://blog.gntech.me/posts/2026-06-13-docker-supply-chain-security-sbom-image-signing/ Sat, 13 Jun 2026 07:00:00 -0400 https://blog.gntech.me/posts/2026-06-13-docker-supply-chain-security-sbom-image-signing/ Secure your container supply chain in the homelab with SBOM generation via Syft, image signing with Cosign, vulnerability scanning via Grype, and Docker Content Trust enforcement. Real commands and workflows. https://blog.gntech.me/posts/2026-06-12-proxmox-vm-disk-performance-benchmark/ Fri, 12 Jun 2026 16:30:00 -0400 https://blog.gntech.me/posts/2026-06-12-proxmox-vm-disk-performance-benchmark/ Benchmark and tune Proxmox VM disk performance. Compare VirtIO-blk vs VirtIO-SCSI single controllers, IO threads, aio modes, and cache settings with fio benchmark results. https://blog.gntech.me/posts/2026-06-11-docker-container-storage-quotas-xfs/ Thu, 11 Jun 2026 17:00:00 -0400 https://blog.gntech.me/posts/2026-06-11-docker-container-storage-quotas-xfs/ Limit Docker container disk usage with XFS project quotas and overlay2 size options. Prevent runaway storage in your homelab with per-container and per-volume disk caps. https://blog.gntech.me/posts/2026-06-11-linux-auditd-security-auditing-homelab/ Thu, 11 Jun 2026 14:00:00 -0400 https://blog.gntech.me/posts/2026-06-11-linux-auditd-security-auditing-homelab/ Set up Linux auditd to monitor Docker container execution, Proxmox VM changes, and file access in your homelab. Covers audit rules, ausearch reporting, and integration with systemd-journald. https://blog.gntech.me/posts/2026-06-09-linux-network-performance-tuning-homelab/ Tue, 09 Jun 2026 17:00:00 -0400 https://blog.gntech.me/posts/2026-06-09-linux-network-performance-tuning-homelab/ Optimize Linux network performance on Proxmox and Docker hosts with ethtool ring buffer tuning, irqbalance configuration, multiqueue RSS/RPS, and tc traffic shaping — with benchmarks and systemd persistence. https://blog.gntech.me/posts/2026-06-09-docker-macvlan-homelab-networking/ Tue, 09 Jun 2026 16:00:00 -0400 https://blog.gntech.me/posts/2026-06-09-docker-macvlan-homelab-networking/ Give Docker containers direct IPs on any VLAN using MACVLAN and IPVLAN. A practical homelab guide with real Compose configs, routing, and use cases. https://blog.gntech.me/posts/2026-06-09-proxmox-datacenter-manager-1-1-automated-install-ceph-monitoring/ Tue, 09 Jun 2026 14:30:00 -0400 https://blog.gntech.me/posts/2026-06-09-proxmox-datacenter-manager-1-1-automated-install-ceph-monitoring/ Proxmox Datacenter Manager 1.1 adds automated answer-file installations, centralized Ceph monitoring, and subscription management. A practical guide to PDM for your homelab. https://blog.gntech.me/posts/2026-06-09-proxmox-ve-cluster-high-availability-homelab/ Tue, 09 Jun 2026 14:30:00 -0400 https://blog.gntech.me/posts/2026-06-09-proxmox-ve-cluster-high-availability-homelab/ Build a Proxmox VE cluster with live migration and HA failover. Covers corosync, quorum, 2-node QDevice setup, HA groups, and fencing for homelab high availability. https://blog.gntech.me/posts/2026-06-07-librenms-docker-deployment-network-monitoring-homelab/ Sun, 07 Jun 2026 18:30:00 -0400 https://blog.gntech.me/posts/2026-06-07-librenms-docker-deployment-network-monitoring-homelab/ Deploy LibreNMS in Docker for comprehensive homelab network monitoring. SNMP autodiscovery, alerting, and graphing for MikroTik, Proxmox, Linux hosts, and switches. https://blog.gntech.me/posts/2026-06-07-linux-bridge-networking-debugging-docker-proxmox/ Sun, 07 Jun 2026 17:00:00 -0400 https://blog.gntech.me/posts/2026-06-07-linux-bridge-networking-debugging-docker-proxmox/ Debug Docker and Proxmox bridge networks with tcpdump, brctl, and bridge fdb. Fix container connectivity, VLAN tagging, and MAC learning issues in your homelab. https://blog.gntech.me/posts/2026-06-07-systemd-networkd-homelab-networking-bridges-vlans-bonds/ Sun, 07 Jun 2026 07:00:00 -0400 https://blog.gntech.me/posts/2026-06-07-systemd-networkd-homelab-networking-bridges-vlans-bonds/ Configure bridges, VLAN interfaces, and bond links with systemd-networkd on Debian 13 and Ubuntu 24.04. Practical homelab networking without NetworkManager or netplan.