LOG 归档 - 第54页共139页

Linux auditd: Rules, auditctl and ausearch Investigations

Build auditd rules that survive production: rule ordering, keys, auditctl verification, ausearch investigation and auditd performance tuning.

admin 2026-09-19

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IS-IS Level 2 to Level 1 Route Leaking Configuration

Configure IS-IS route leaking with redistribute isis ip level-2 into level-1, understand the up/down bit and remove suboptimal interarea paths.

admin 2026-09-19

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YANG and OpenConfig Models: A Practical pyang Workflow

Work with YANG and OpenConfig models before automating: install models, render trees with pyang, validate JSON/XML payloads and map NETCONF paths.

admin 2026-09-19

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IPsec VTI vs Policy-Based VPN: Choosing and Configuring

Compare IPsec VTI (route-based) with policy-based crypto maps: routing protocol support, NAT and overlapping subnets, VRF awareness, and when to add G

admin 2026-09-19

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cloud-init Network Configuration v2: Static IPs and Bonds

Write cloud-init network config v2 for static IPs, multiple NICs, VLANs and bonds: netplan syntax, match rules, routes, and how to debug first-boot fa

admin 2026-09-19

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ipmitool Operations: Sensors, SEL, SOL and Power

Use ipmitool on Linux for out-of-band server management: sensor and SDR reads, SEL review, Serial-over-LAN console access, power control and firmware

admin 2026-09-19

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PostgreSQL 16 Streaming Replication with pg_basebackup

Set up PostgreSQL 16 streaming replication: primary settings, replication slots, pg_basebackup bootstrap, verification queries and clean failover.

admin 2026-09-19

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Port-Channel Load Balancing Hash Algorithm Tuning

Why an eight-link port-channel can still run at 15% on one member: pick the right EtherChannel hash and prove the flow distribution is even.

admin 2026-09-19

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Cisco Err-Disable: Causes, Recovery and Fixes

Why Cisco switch ports go err-disabled, how to read the cause, and how to configure errdisable recovery timers safely without hiding the real fault.

admin 2026-09-19

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100G DAC vs AOC vs Optics: Selection & Troubleshooting

Compare passive DAC, active DAC, AOC and 100G optics: reach, power, latency, breakout support and the link-down faults each cable type causes.

admin 2026-09-19

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