Wandering Thoughts archives

2019-09-30:	Using alerts as tests that guard against future errors Link: The asymmetry of Internet identity ZFS performance really does degrade as you approach quota limits
2019-09-29:	Understanding when to use and not use the `-F` option for `flock(1)`
2019-09-27:	Some field notes on imposing memory resource limits on users on Ubuntu 18.04 A file permissions and general deployment annoyance with Certbot
2019-09-25:	It's always convenient when malware is clear about its nature (7z edition) Our workaround for Ubuntu 16.04 and 18.04 failing to reliably reboot some of our servers
2019-09-24:	How we implement per-user CPU and memory resource limits on Ubuntu
2019-09-22:	The increasing mess of `libreadline` versions in Linux distributions
2019-09-21:	Why chroot is a security feature for (anonymous) FTP
2019-09-20:	Modernizing (a bit) some of our HTML form <input> elements TLS server certificate verification has two parts (and some consequences)
2019-09-18:	Firefox, DNS over HTTPS, and us Converting a Go pointer to an integer doesn't quite do what it looks like
2019-09-17:	Finding metrics that are missing labels in Prometheus (for alert metrics)
2019-09-16:	The problem of 'triangular' Network Address Translation
2019-09-14:	Some notes on the structure of Go binaries (primarily for ELF)
2019-09-13:	Bidirectional NAT and split horizon DNS in our networking setup
2019-09-12:	The mystery of why my Fedora 30 office workstation was booting fine
2019-09-11:	Making your own changes to things that use Go modules
2019-09-10:	Catching Control-C and a gotcha with shell scripts
2019-09-09:	A safety note about using (or having) `go.mod` inside `$GOPATH` in Go 1.13
2019-09-08:	Jumping backward and forward in GNU Emacs
2019-09-07:	CentOS 7 and Python 3
2019-09-06:	Programs that let you jump around should copy web browser navigation Go modules and the problem of noticing updates to dependencies
2019-09-04:	If you use the rarfile module, make sure you're using version 3.0 (or later) Using Wireshark's Statistics menu to get per-host traffic volume
2019-09-02:	Another way to do easy configuration for lots of Prometheus Blackbox checks
2019-09-01:	Some limitations of wifi MAC address randomization

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By day for September 2019: 1 2 4 6 7 8 9 10 11 12 13 14 16 17 18 19 20 21 22 24 25 27 29 30; before September; after September.