Wandering Thoughts archives

2022-08-31:	ZFS DVA offsets are in 512-byte blocks on disk but zdb misleads you about them
2022-08-30:	ZFS DVA offsets are in bytes, not (512-byte) blocks
2022-08-29:	A thought on presentational versus semantic HTML
2022-08-28:	Getting USB TEMPer2 temperature sensor readings into Prometheus (on Linux)
2022-08-27:	Large scale Internet SSH brute force attacks seem to have stopped here
2022-08-26:	Using systemd timers to run things frequently (some early notes)
2022-08-25:	U.2, U.3, and other server NVMe drive connector types (in mid 2022)
2022-08-24:	We now have some 1U servers with U.2 NVMe SSDs and they're okay
2022-08-23:	On Ubuntu, AppArmor is quite persistent and likes to reappear on you
2022-08-22:	Some notes on Grafana annotations sourced from Prometheus metrics
2022-08-21:	ZFS DVAs and what they cover on raidz vdevs
2022-08-20:	The Ubuntu 22.04 server installer wants you to scrub reused disks first
2022-08-19:	I wish Prometheus had a table-driven label remapping feature
2022-08-18:	Rasdaemon is what you want on Linux if you're seeing kernel MCE messages
2022-08-17:	Some resources for looking at the current development version of Go
2022-08-16:	The names of disk drive SMART attributes are kind of made up (sadly)
2022-08-15:	Disk drive SMART attributes can go backward and otherwise be volatile
2022-08-14:	Our slow turnover of servers and server generations
2022-08-13:	The C `free()` API means memory allocation must save some metadata
2022-08-12:	My adventure with URLs in a Grafana that's behind a reverse proxy
2022-08-11:	My uncertainty over whether an URL format is actually legal
2022-08-10:	Some notes (to myself) about formatting text in `jq`
2022-08-09:	Ubuntu 22.04 with multiple disks and (U)EFI booting
2022-08-08:	Two example Grafana Loki log queries to get things from ntpdate logs
2022-08-07:	Our BMCs are not great at keeping accurate time
2022-08-06:	The pervasive effects of C's malloc() and free() on C APIs
2022-08-05:	How old our servers are (as of 2022)
2022-08-04:	The odd return value of the original 4.2 BSD `gethostbyname()` Link: The MGR Window System
2022-08-03:	Vim settings I'm using for editing YAML (with a sideline into Python)
2022-08-02:	I wish that systemd (and everything) would rate-limit configuration warnings
2022-08-01:	A brief history of looking up host addresses in Unix

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