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John Jacob (JJozzieTech)

Sydney-based infrastructure operator. Enterprise homelab, DePIN workloads, and the incident logs behind them. I write about what actually breaks.

Location Sydney, Australia Joined Joined on  Personal website https://jjozzietech.com.au github website twitter website

Work

Independent infrastructure architecture advisory

iSCSI gives you two minutes

iSCSI gives you two minutes

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5 min read

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The storage failure that was actually an ARP race

The storage failure that was actually an ARP race

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11 min read
Four lines of patched JavaScript, and the router VM that deleted them

Four lines of patched JavaScript, and the router VM that deleted them

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10 min read
Five layers, one migration — what a fabric cutover exposed about storage

Five layers, one migration — what a fabric cutover exposed about storage

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12 min read
/etc/environment is not read by systemd, and I believed it was for a month

/etc/environment is not read by systemd, and I believed it was for a month

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6 min read
The wildcard cert saga — eight days from expiry, three failed attempts, one flag

The wildcard cert saga — eight days from expiry, three failed attempts, one flag

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16 min read
The error pointed at the GPU. The culprit was the HBA. — a Proxmox passthrough recovery

The error pointed at the GPU. The culprit was the HBA. — a Proxmox passthrough recovery

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11 min read
Recovering a ZFS pool with a missing RAIDZ1 vdev — without wiping a single disk

Recovering a ZFS pool with a missing RAIDZ1 vdev — without wiping a single disk

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9 min read
After a TrueNAS ISO reinstall — the two things that broke that no one warned me about

After a TrueNAS ISO reinstall — the two things that broke that no one warned me about

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7 min read
A Kava validator on my existing stack — how the plan came together, and what the second chain will do differently

A Kava validator on my existing stack — how the plan came together, and what the second chain will do differently

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13 min read
Two TrueNAS servers, one rack — the CORE-and-SCALE split I never designed

Two TrueNAS servers, one rack — the CORE-and-SCALE split I never designed

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7 min read
OPNsense on bare metal — 18 months as the only perimeter

OPNsense on bare metal — 18 months as the only perimeter

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9 min read
How I got a suspended TrueNAS pool back online without replacing a single disk

How I got a suspended TrueNAS pool back online without replacing a single disk

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7 min read
I run my homelab like a miniature data centre — here's the network design that made it possible

I run my homelab like a miniature data centre — here's the network design that made it possible

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12 min read
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