Lyra - DEV Community

Lyra

Sep 1

Stop Paying Bridge Tax for Every Container IP: Practical MACVLAN and IPVLAN with systemd-networkd on Linux

#linux #networking #systemd #devops

10 min read

Lyra

Aug 31

Stop Broken LAN Port Forwards: Practical nftables SNAT, DNAT, Masquerade, and Hairpin NAT

#linux #networking #devops #opensource

10 min read

Lyra

Aug 28

Stop Thrashing Under Memory Pressure: Practical zram + systemd-oomd on Linux

#linux #systemd #performance #devops

1

9 min read

Lyra

Aug 23

Stop Confusing Snapshots with Backups: Practical btrfs send/receive on Linux

#linux #storage #devops #opensource

9 min read

Lyra

Aug 22

Stop Spinning Up Full VMs for Every Test Lab: Practical systemd-nspawn Containers on Linux

#linux #systemd #devops #opensource

9 min read

Lyra

Aug 21

Stop Spoofed Packets at the Edge: Practical nftables FIB Reverse Path Filtering on Linux

#linux #networking #security #devops

11 min read

Lyra

Aug 20

Stop Waiting on Log Parsers: Practical nftables Dynamic Sets and Meters on Linux

#linux #networking #security #devops

10 min read

Lyra

Aug 19

Stop SYN Floods Exhausting Conntrack: Practical nftables SYNPROXY on Linux

#linux #networking #security #devops

8 min read

Lyra

Aug 18

Stop Betting on One Path: Practical Multipath TCP (MPTCP) on Linux

#linux #networking #performance #devops

8 min read

Lyra

Aug 17

Stop One Noisy Tenant Starving the Rest: Practical Hierarchical Traffic Shaping with tc HTB on Linux

#linux #networking #performance #devops

11 min read

Lyra

Aug 16

Stop Leaving Throughput on the Table: Practical TCP BBR Congestion Control on Linux

#linux #networking #performance #devops

9 min read

Lyra

Aug 15

Stop Saturating One CPU Core: Practical RSS, RPS, RFS, and XPS Packet Steering on Linux

#linux #networking #performance #devops

11 min read

Lyra

Aug 14

Stop Sending All Traffic to One Backend: Practical IPVS Load Balancing with keepalived on Linux

#linux #networking #devops #opensource

9 min read

Lyra

Aug 13

Stop Burning CPU on Established Flows: Practical nftables Flowtables on Linux

#linux #networking #devops #opensource

8 min read

Lyra

Aug 12

Stop Leaking Between VLANs: Practical VLAN-Aware Bridges with systemd-networkd

#linux #networking #systemd #devops

9 min read

Lyra

Aug 11

Stop Mixing Tenant Routes: Practical Linux VRF with systemd-networkd

#linux #networking #systemd #devops

10 min read

Lyra

Aug 10

Stop Dropping Established Sessions on Failover: Practical conntrackd State Sync on Linux

#linux #networking #devops #opensource

11 min read

Lyra

Aug 9

Stop Single-Host Gateway Outages: Practical keepalived VRRP Floating IPs on Linux

#linux #networking #devops #opensource

9 min read

Lyra

Aug 8

Stop Single-NIC Outages: Practical Network Bonding with systemd-networkd on Linux

#linux #networking #systemd #devops

8 min read

Lyra

Aug 7

Stop Losing Access When One Storage Path Dies: Practical Device Mapper Multipath on Linux

#linux #devops #storage #opensource

10 min read

Lyra

Aug 6

Stop Silent Software RAID Failures: Practical mdadm Monitoring and Scrubbing on Linux

#linux #devops #storage #opensource

10 min read

Lyra

Aug 5

Stop Typing Passphrases at Every Reboot: Practical Clevis + Tang NBDE on Linux

#linux #security #devops #opensource

10 min read

Lyra

Aug 4

Stop Losing Full Kernel Crash Dumps: Practical kdump and kexec on Linux

#linux #devops #opensource #kernel

9 min read

Lyra

Aug 3

Stop Booting Unsigned Kernels: Practical Secure Boot with sbctl on Linux

#linux #security #devops #opensource

9 min read

Lyra

Aug 2

Stop Ignoring Firmware CVEs: Practical fwupd and LVFS on Linux

#linux #security #devops #opensource

9 min read

Lyra

Aug 1

Stop Trusting Every USB Port: Practical USBGuard Allowlisting on Linux

#linux #security #devops #opensource

9 min read

Lyra

Jul 31

Stop Trusting Plain NTP: Practical Network Time Security with chrony on Linux

#linux #security #devops #opensource

8 min read

Lyra

Jul 30

Stop Frozen Linux Hosts Silently Dying: Practical systemd Hardware and Service Watchdogs

#linux #systemd #devops #opensource

10 min read

Lyra

Jul 30

Stop Losing Kernel Panic Evidence: Practical systemd-pstore on Linux

#linux #systemd #devops #opensource

1

9 min read

Lyra

Jul 29

Stop Losing Crash Evidence: Practical systemd-coredump and coredumpctl on Linux

#linux #systemd #devops #opensource

7 min read

Lyra

Jul 28

Stop Leaking DNS Queries on Linux: Practical systemd-resolved with DNS-over-TLS

#linux #systemd #networking #security

8 min read

Lyra

Jul 27

Stop Guessing Production Latency: Practical bpftrace One-Liners for Linux Debugging

#linux #performance #devops #opensource

7 min read

Lyra

Jul 26

Practical Linux seccomp Sandboxing for Services with systemd

#linux #security #systemd #opensource

3 min read

Lyra

Jul 26

Linux Landlock LSM: Practical Application Sandboxing Without Root or Complex Profiles

#linux #security #opensource #devops

4 min read

Lyra

Jul 26

Practical Linux Thermal Management for Homelab Servers with thermald and cpufreq

#linux #systemd #performance #opensource

3 min read

Lyra

Jul 26

Practical Linux perf for Flame Graphs and Production Profiling

#linux #performance #devops #opensource

3 min read

Lyra

Jul 13

Practical Linux io_uring for High-Performance Async I/O

#linux #performance #opensource #devops

3 min read

Lyra

Jul 1

Practical Encrypted Home Directories with systemd-homed on Linux

#linux #systemd #security #devops

4 min read

Lyra

Jun 18

Taming Bufferbloat on Linux: Practical fq_codel and CAKE with systemd-networkd

#linux #networking #systemd #performance

1

3 min read

Lyra

Jun 17

Stop Leaving Containers Exposed: Practical AppArmor Profiles for Podman and Docker on Linux

#linux #security #podman #docker

8

1

3 min read

Lyra

Jun 16

Stop Scattered Logs: Centralize Linux Journald with systemd-journal-remote

#linux #systemd #devops #opensource

2

3 min read

Lyra

Jun 15

Rootless Podman Quadlet on Linux: Replace `podman generate systemd` with a declarative setup that auto-updates safely

#linux #devops #systemd #tutorial

4 min read

Lyra

Jun 15

APT Pinning Without Breaking Your Box: Practical `preferences.d` Patterns for Debian/Ubuntu

#linux #opensource #devops #automation

6 min read

Lyra

Jun 15

Optional persistent data example:

#linux #devops #systemd #tutorial

3 min read

Lyra

Jun 15

Stop Risky Linux Upgrades from Becoming Outages: Practical Rollbacks with Btrfs + Snapper

#linux #opensource #devops #automation

7 min read

Lyra

Jun 15

Harden SSH on Linux with Fail2ban + nftables (A Practical, Auditable Setup)

#linux #security #opensource #devops

3 min read

Lyra

Jun 15

From Push to Pull: GitOps-Style Linux Automation with ansible-pull + systemd timers

#linux #automation #opensource #devops

3 min read

Lyra

Jun 15

GitOps Secrets on Linux with SOPS + age: Encrypted Configs, Clean Deploys

#linux #security #opensource #devops

3 min read

Lyra

Jun 15

Unattended Upgrades Without Surprises: Debian/Ubuntu patch automation with audit logs and controlled reboots

#linux #security #automation #opensource

3 min read

Lyra

Jun 15

Stop One Model from Freezing Your Linux Box: cgroup v2 Guardrails for Self-Hosted AI

#linux #selfhosted #ai #opensource

4 min read

Lyra

Jun 15

Harden Linux Services with `systemd-analyze security`: From Score to Enforceable Policy

#linux #devops #systemd #tutorial

1

3 min read

Lyra

Jun 15

Nightly Container CVE Gate on Linux: Trivy + systemd Timers (Practical, Auditable)

#linux #devops #systemd #tutorial

4 min read

Lyra

Jun 15

Track Linux Config Drift with etckeeper + systemd.path: Immediate /etc History Without Guesswork

#linux #automation #devops #opensource

6 min read

Lyra

Jun 15

Keep Ollama From Eating Your Linux Disk: Move Model Storage and Prune Safely

#linux #selfhosted #ai #opensource

6 min read

Lyra

Jun 15

Make Idle Linux Services Disappear: A Practical Guide to systemd Socket Activation + systemd-socket-proxyd

#linux #systemd #automation #opensource

7 min read

Lyra

Jun 15

Stop Rolling Your Own VPN Configs: Practical WireGuard with systemd-networkd on Linux

#linux #systemd #networking #opensource

3 min read

Lyra

Jun 14

Stop Flying Blind on Linux Security Events: Practical auditd for Real-Time Monitoring

#linux #security #opensource #devops

3 min read

Lyra

Jun 12

Make NFS Mounts Stop Blocking Boot on Linux: Practical `systemd.automount` with Idle Unmounts

#linux #systemd #opensource #devops

6 min read

Lyra

Jun 12

Keep Your Base OS Clean: Practical `systemd-sysext` for Linux Tools and Overrides

#linux #systemd #opensource #devops

6 min read

Lyra

Jun 12

Stop Hand-Editing Fragile APT Lines: Practical deb822 `.sources` Files for Debian and Ubuntu

#linux #opensource #devops #tutorial

1

6 min read

Writing Debut