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LOG

ONTAP Volume Move: Cutover and Troubleshooting

ONTAP Volume Move: Cutover and Troubleshooting

Move an ONTAP FlexVol between aggregates safely: target-aggregate checks, volume move start and show, trigger-cutover, cutover windows and failure rec

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Ansible Jinja2 Templates for Network Device Configs

Ansible Jinja2 Templates for Network Device Configs

Switch configuration becomes reviewable when Jinja2 templates render device variables and a two-phase Ansible deploy diffs the result before it is app

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Alertmanager Routing, Grouping and Silences That Work

Alertmanager Routing, Grouping and Silences That Work

A working Alertmanager: routing trees, group_by tuning, inhibit_rules with equal, mute timings, amtool silences, clustered peers and end-to-end verifi

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VXLAN MTU and Fragmentation: The 50-Byte Tax

VXLAN MTU and Fragmentation: The 50-Byte Tax

Why VXLAN overlays break large transfers: the 50-byte tax, 1450 vs 9000 MTU, cloud and tunnel underlays, MSS clamping, offloads and the counters that

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OSPF Stub and NSSA Area Types: Configuration Guide

OSPF Stub and NSSA Area Types: Configuration Guide

OSPF area types compared: stub, totally stubby, NSSA and totally NSSA, how type-7 LSAs become type-5, translator election and multi-vendor CLI.

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Kubernetes Gateway API vs Ingress: Migration Guide

Kubernetes Gateway API vs Ingress: Migration Guide

Migrate from Ingress to Gateway API: GatewayClass, Gateway and HTTPRoute ownership, TLS with ReferenceGrant, weighted canaries and policy attachment c

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smartctl and smartd: Catch Failing Disks Early

smartctl and smartd: Catch Failing Disks Early

SMART done properly: the attribute columns that matter, HDD, SAS and NVMe failure predictors, smartd scheduling, Prometheus export and safe RAID repla

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Nexus vPC: Peer-Gateway, Orphan Ports and Health Checks

Nexus vPC: Peer-Gateway, Orphan Ports and Health Checks

Cisco Nexus vPC beyond the basics: peer-gateway and ARP synchronize, orphan-port suspend behaviour, type-1 consistency checks and show vpc verificatio

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VictoriaMetrics: Single-Node vs Cluster Deployment

VictoriaMetrics: Single-Node vs Cluster Deployment

Choose between VictoriaMetrics single-node and cluster: series cardinality sizing, retention and downsampling, vmctl migration, vmbackup restore and t

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Optical Power Budget: How to Calculate a Fiber Link

Optical Power Budget: How to Calculate a Fiber Link

Calculate a fiber link loss budget before pulling cable: Tx power minus Rx sensitivity, dB/km, connector, splice and splitter values, with worked exam

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