LOG 归档 - 第42页共139页

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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Cilium BGP Control Plane in Kubernetes Clusters

Advertise pod and service CIDRs to the physical network with the Cilium BGP control plane: enablement, CiliumBGPClusterConfig, advertisements and veri

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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SR-MPLS vs SRv6: Which Segment Routing Data Plane

Compare SR-MPLS and SRv6 data planes: SID format, header overhead, hardware requirements, migration paths and the operational trade-offs that decide t

admin 2026-09-24

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BGP Large Communities for Traffic Engineering

Why BGP large communities replaced 32-bit communities in 4-byte ASN networks, the ASN:action:parameter convention, and how to match and set them in po

admin 2026-09-24

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IPv6 First Hop Security: RA Guard and DHCPv6 Guard

Stop rogue IPv6 routers and DHCPv6 servers on your access layer with RA Guard, DHCPv6 Guard, IPv6 snooping and source guard, configured on Cisco Catal

admin 2026-09-24

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WRED vs Tail Drop: Congestion Avoidance Explained

How WRED differs from tail drop, what the min/max thresholds and mark probability denominator actually do, and how to size them without dropping good

admin 2026-09-24

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