linux 归档 - 第6页共19页

PXE and UEFI HTTP Boot Server Setup with dnsmasq

Build a PXE and UEFI HTTP Boot server with dnsmasq, TFTP and an HTTP root: proxy DHCP, architecture-specific boot files, menus and the failure modes t

admin 2026-09-25

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Netdata: Installation and Real-Time Node Monitoring

Install the Netdata agent, tune retention and memory, add custom health alerts and centralise many nodes with Netdata Cloud or a parent node.

admin 2026-09-25

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TCP Tuning for High Bandwidth-Delay Product Links

Tune Linux TCP for long fat networks: calculate the bandwidth-delay product, set socket buffers and window scaling, verify with iperf3 before blaming

admin 2026-09-24

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Redis Sentinel vs Redis Cluster: Failover Design

Choose between Redis Sentinel and Redis Cluster: quorum and failover behaviour, client redirection, sharding limits and rules that prevent split brain

admin 2026-09-24

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PostgreSQL Streaming Replication and Safe Failover

Run PostgreSQL streaming replication and promote a standby without losing the old primary: standby.signal, pg_rewind, timeline divergence, verificatio

admin 2026-09-24

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Ceph OSD Recovery and Backfill Throttling

Tune Ceph backfill and recovery throttles so an OSD replacement or cluster expansion does not saturate client I/O. Parameters, safe steps, monitoring.

admin 2026-09-24

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iSCSI Multipathing with multipathd: Tuning Guide

Configure and tune DM Multipath for iSCSI: path grouping, timeouts that control failover speed, blacklisting local disks and the commands that verify

admin 2026-09-24

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Linux Network Namespaces and VRFs: A Hands-On Lab

Build isolated routing domains on Linux with ip netns, veth pairs and VRF devices: commands, routing rules, and when to use each approach for multi-te

admin 2026-09-24

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Grafana Loki and Promtail Log Pipeline Setup

Deploy Grafana Loki with Promtail: config files, index and chunk storage, scrape_configs, pipeline stages for parsing, labels and LogQL queries.

admin 2026-09-23

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Snort 3 Installation and Rule Configuration Guide

Install and configure Snort 3: dependencies, LibDAQ, Lua configuration, module tuning, rule files and includes, plus snort2lua migration from Snort 2.

admin 2026-09-23

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