Posts tagged with "dell-wyse-3040"

I renamed /usr to /usr-root as root. On a live system. Here's the recovery — and what the mistake teaches about operational discipline.

eMMC storage doesn't support SMART, but the JEDEC health reporting built into mmc-utils gives you life time estimation and pre-EOL status for Dell Wyse 3040 boot drives.

Performance tuning Ceph on USB storage and constrained hardware — mClock configuration, IOPS optimization, and the realities of USB 3.0 as a storage tier.

Ceph's nearfull warnings are capacity planning signals, not emergencies — if you understand the thresholds and respond before the cluster goes read-only.

Hard-won lessons from running Proxmox since version 7.4 through 8.2.2 — upgrade gotchas, Ceph integration tips, and the patterns that apply at any scale.

Adding a nightly reboot schedule to RAM-constrained Dell Wyse 3040 Proxmox nodes using SystemD timers instead of crontab.

Ceph Monitor refuses to start after a Proxmox 8.2.4 upgrade because root partitions hit 95% — fixed by clearing apt cache, removing atop logs, and purging old PVE and Debian kernels.

Deploying Tailscale on Dell Wyse 3040 thin clients as always-on subnet router nodes connecting three geographically separate homelab networks.

Building a three-node Proxmox 8 + Ceph test cluster on Dell Wyse 3040 thin clients to safely evaluate SDN and Ceph configuration changes without risking the semi-production cluster.

Installing Debian 12 on Dell Wyse 3040 thin clients: BIOS setup, Ventoy boot, the GRUB EFI removable media fix for the bad BIOS, and the dw_dmac blacklist that prevents lockups on shutdown.

Replacing the proprietary CMOS battery connector on Dell Wyse 3040 thin clients using heat shrink tubing and standard CR2032 cells — $23 for nine units versus $90 for pre-made replacements.