| 2023-05-28: |
My current editor usage (as of mid 2023)
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| 2023-05-27: |
How I set up a server for testing new Grafana versions and other things
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| 2023-05-26: |
In practice, Grafana has not been great at backward compatibility
|
| 2023-05-25: |
That people produce HTML with string templates is telling us something
|
| 2023-05-24: |
Encryption for stream based protocols versus 'RPC' protocols
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| 2023-05-23: |
Some views on protocols and encryption
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| 2023-05-22: |
What I see as good options today for encrypted NFS
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| 2023-05-21: |
NFS with Kerberos and NFS without Kerberos are two quite different things
|
| 2023-05-20: |
Some notes on the cost of Go finalizers (in Go 1.20)
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| 2023-05-19: |
The long life of Apache httpd 2.4
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| 2023-05-18: |
What a desktop environment is on modern Linux
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| 2023-05-17: |
(Graphical) Unix has always had desktop environments
Having metrics for something attracts your attention to it
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| 2023-05-15: |
The time our Linux systems spend on integer to text and back conversions
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| 2023-05-14: |
Why I use separate lexers in my recursive descent parsers
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| 2023-05-13: |
The paradox of ZFS ARC non-growth and ARC hit rates
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| 2023-05-12: |
The modern browser experience has some impressive subtle tricks
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| 2023-05-11: |
I've mostly stopped reading technical mailing lists
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| 2023-05-10: |
Mailing lists versus forums, some thoughts
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| 2023-05-09: |
Curing my home desktop from locking up in the cold (so far)
|
| 2023-05-08: |
When to use drgn instead of eBPF tools like bpftrace, and vice versa
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| 2023-05-07: |
Advisory file locks and mandatory file locks are two quite different things
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| 2023-05-06: |
Finding which NFS client owns a lock on a NFS server via Linux kernel delving
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| 2023-05-05: |
Some early praise for using drgn for poking into Linux kernel internals
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| 2023-05-04: |
Flock() and fcntl() file locks and Linux NFS (v3)
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| 2023-05-03: |
Forcefully breaking NFS locks on Linux NFS servers as of Ubuntu 22.04
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| 2023-05-02: |
The types of TLS seen on our external MX (as of April 2023)
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| 2023-05-01: |
How NFS v3 servers and clients re-synchronize locks after reboots
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| 2023-04-30: |
Os.walk, the temptation of hammers, and the paralysis of choice
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| 2023-04-29: |
A crontab related mistake you can make with internal email ratelimits
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| 2023-04-28: |
More notes on Linux's /proc/locks and NFS as of Ubuntu 22.04
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| 2023-04-27: |
I can't recommend serious use of an all-in-one local Grafana Loki setup
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| 2023-04-26: |
Putting the 'User-Agent' in your web crawler's User-Agent
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| 2023-04-25: |
Understanding ZFS ARC hit (and miss) kstat statistics
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| 2023-04-24: |
Thinking about our passive exposure to IPv6 issues
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| 2023-04-23: |
Programming on Unix and automatic memory management
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| 2023-04-22: |
The two types of C programmers (a provocative thesis)
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| 2023-04-21: |
The traditional workaround for stuck NFS(v3) locks
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| 2023-04-20: |
Setting the ARC target size in ZFS on Linux (as of ZoL 2.1)
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| 2023-04-19: |
An interesting mistake I made with a (Go) SSH client API
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| 2023-04-18: |
When and how ZFS on Linux changes the ARC target size (as of ZoL 2.1)
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| 2023-04-17: |
ARC memory reclaim statistics exposed by ZFS on Linux (as of ZoL 2.1)
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| 2023-04-16: |
Some important ARC memory statistics exposed by ZFS on Linux (as of ZoL 2.1)
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| 2023-04-15: |
Some thoughts on OpenSSH versus SSH
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| 2023-04-14: |
The various sizes of the ZFS ARC (as of OpenZFS 2.1)
|
| 2023-04-13: |
OpenSSH's (signed) certificates are not TLS X.509 certificates
|
| 2023-04-12: |
The chain of landing web pages that I saw for a phish spam today
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| 2023-04-11: |
Notification sounds and system sounds on Linux should be granular
|
| 2023-04-10: |
Failing to build a useful pre Go 1.21 static Go toolchain on Linux
|
| 2023-04-09: |
On Linux, you can't usefully statically link programs using NSS
|
| 2023-04-08: |
A Prometheus Alertmanager alert grouping conundrum
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| 2023-04-07: |
Go 1.21 will (likely) have a static toolchain on Linux
|
| 2023-04-06: |
ZFS On Linux (still) needs better ways to control the ZFS ARC
|
| 2023-04-05: |
Giving Firefox the tiniest URL bar bookmark 'star' button possible
|
| 2023-04-04: |
How to get a bigger font for Firefox's preview of link targets (sort of)
|
| 2023-04-03: |
Automated status tests need to have little or no 'noise'
|
| 2023-04-02: |
You should automate some basic restore testing of your backups
|
| 2023-04-01: |
Avoiding HTTP/3 (for a while) as a pragmatic default
|
| 2023-03-31: |
Exploiting (or abusing) password fields for Multi-Factor Authentication
|
| 2023-03-30: |
Giving Gnome-Terminal some margins makes me happier with it
|
| 2023-03-29: |
The case of the very wrong email Content-Transfer-Encoding
|
| 2023-03-28: |
An interesting yet ordinary consequence of ZFS using the ZIL
|
| 2023-03-27: |
Moving from 'master' to 'main' in Git with local changes
|
| 2023-03-26: |
My pragmatic shift from PS/2 keyboards and mice to USB ones
|
| 2023-03-25: |
Apache 2.4's event MPM can require more workers than you'd expect
|
| 2023-03-24: |
Key rotation is not the same as key revocation (or invalidation)
|
| 2023-03-23: |
SSD block discard in practice on Linux systems
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| 2023-03-22: |
The problem RAID faces with discarding blocks on SSDs
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| 2023-03-21: |
ZFS on Linux and NFS(v3) server filesystem IDs
|
| 2023-03-20: |
Today the default choice for a terminal program is Gnome Terminal
|
| 2023-03-19: |
Easily adjusting the minimum interval on panels in Grafana dashboards
|
| 2023-03-18: |
There are two facets to dd usage
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| 2023-03-17: |
Some reasons why CPUs might re-use unofficial NOPs for other things
|
| 2023-03-16: |
NFS filehandles from Linux NFS servers can be client specific
|
| 2023-03-15: |
The extra hazards of mutual TLS authentication (mTLS) in web servers
|
| 2023-03-14: |
Some notes on searching the systemd journal with journalctl
|
| 2023-03-13: |
What I like using Grafana Loki for (and where I avoid it)
|
| 2023-03-12: |
Getting a Python 2 virtual environment (in 2023's twilight of Python 2)
|
| 2023-03-11: |
As a system administrator, I work in many different environments
|
| 2023-03-10: |
Some bits on Linux NFS(v3) server filesystem IDs (and on filehandles)
|
| 2023-03-09: |
ZFS on Linux and when you get stale NFSv3 mounts
|
| 2023-03-08: |
Debconf's questions, or really whiptail, doesn't always work in xterms
|
| 2023-03-07: |
ANSI colours aren't consistent across X terminal programs
|
| 2023-03-06: |
Special tcpdump filtering options for OpenBSD's pflog interface
|
| 2023-03-05: |
An unexciting idea: Code changes have context
|
| 2023-03-04: |
How secure is merely discarding (TRIMing) all of a SSD's blocks?
|
| 2023-03-03: |
When securely erasing disks, who are you trying to stop?
|
| 2023-03-02: |
Modern email addresses can be in UTF-8
|
| 2023-03-01: |
A gotcha with Systemd's DynamicUser, supplementary groups, and NFS (v3)
|
| 2023-02-28: |
Ubuntu is a Canonical product
|
| 2023-02-27: |
Future Internet PKI schemes need to be bootstrapped through web PKI
|
| 2023-02-26: |
Universities are often environments with distributed accounts and identities
|
| 2023-02-25: |
Systemd-resolved plus LLMNR can create delays in name non-resolution
|
| 2023-02-24: |
Thinking about what a 'VPN' solution is authenticating
|
| 2023-02-23: |
The web single sign on versus availability problem
|
| 2023-02-22: |
How to block people's automatic mail forwarding (to GMail, at least)
|
| 2023-02-21: |
Grafana Loki doesn't compact log chunks and what this means for you
|
| 2023-02-20: |
A bit on unspecified unique objects in Python
|
| 2023-02-19: |
Using web server reverse proxying to deal with file access permissions
|
| 2023-02-18: |
The size of a window is complicated in X (or can be)
|
| 2023-02-17: |
Implementing 'grow down' window placement in Fvwm on X11
|
| 2023-02-16: |
Linux Ext4 directories have a maximum size (in entries)
|
| 2023-02-15: |
BIOS MBR booting isn't always flawless and can be odd
|
| 2023-02-14: |
Things I ran into when moving from Fvwm2 to Fvwm3
|
| 2023-02-13: |
Our current plague of revolving .top and .click spam email domains
|
| 2023-02-12: |
The case for atomic types in programming languages
|
| 2023-02-11: |
Learning about Linux fwmark masks
|
| 2023-02-10: |
Things that systemd-resolved is not for (as of systemd 251)
|
| 2023-02-09: |
I'm considering giving in to the systemd-resolved wave
|
| 2023-02-08: |
The general 'recursive routing' problem in IP networking
|
| 2023-02-07: |
What I want in Prometheus (as a whole) is aggregating alert notifications
|
| 2023-02-06: |
Rsync'ing (only) some of the top level pieces of a directory
|
| 2023-02-05: |
Some things on Prometheus's new feature to keep alerts firing for a while
|
| 2023-02-04: |
The practical appeal of a mesh-capable VPN solution
|
| 2023-02-03: |
In a university, people want to use our IPs even for external traffic
|
| 2023-02-02: |
A gotcha when making partial copies of Prometheus's database with rsync
|
| 2023-02-01: |
C was not created as an abstract machine (of course)
|
| 2023-01-31: |
I've had bad luck with transparent hugepages on my Linux machines
|
| 2023-01-30: |
One reason I still prefer BIOS MBR booting over UEFI
|
| 2023-01-29: |
The CPU architectural question of what is a (reserved) NOP
|
| 2023-01-28: |
I should assume contexts aren't retained in Go APIs
|
| 2023-01-27: |
Some thoughts on whether and when TRIM'ing ZFS pools is useful
|
| 2023-01-26: |
Some notes on using using TRIM on SSDs with ZFS on Linux
|
| 2023-01-25: |
You should back up the settings for your Firefox addons periodically
|
| 2023-01-24: |
Linux software RAID mirrors, booting, mdadm.conf, and disk counts for non-fun
|
| 2023-01-23: |
I should always make a checklist for anything complicated
|
| 2023-01-22: |
How Let's Encrypt accounts are linked to your certificates in Certbot
|
| 2023-01-21: |
How Prometheus makes good use of the HTTP Accept: header
|
| 2023-01-20: |
An instruction oddity in the ppc64 (PowerPC 64-bit) architecture
|
| 2023-01-19: |
My twitch about adding a shim in front of a (shell script) interpreter
|
| 2023-01-18: |
Some things on SSDs and their support for explicitly discarding blocks
|
| 2023-01-17: |
An aggressive, stealthy web spider operating from Microsoft IP space
|
| 2023-01-16: |
Backporting changes is clearly hard, which is a good reason to avoid it
|
| 2023-01-15: |
Some weird effects you can get from shared Let's Encrypt accounts
|
| 2023-01-14: |
Your server BMCs can need to be rebooted every so often
|
| 2023-01-13: |
Ubuntu 22.04 LTS servers and phased apt updates
|
| 2023-01-12: |
A browser tweak for system administrators doing (web) network debugging
|
| 2023-01-11: |
Sometimes it actually is a kernel bug: bind() in Linux 6.0.16
|
| 2023-01-10: |
My Git settings for carrying local changes on top of upstream development
|
| 2023-01-09: |
In Python, zero is zero regardless of the number type
Link: X Window System Basics
|
| 2023-01-08: |
Let's Encrypt's complex authorization process and multi-name TLS certificates
|
| 2023-01-07: |
Our ZFS spares handling system sort of relies on our patterns of disk usage
|
| 2023-01-06: |
Setting alerts is a chance to figure out what you really care about
|
| 2023-01-05: |
The different sorts of 'iconification' of windows in X
|
| 2023-01-04: |
Finding people's use of /usr/bin/python with the Linux audit framework
|
| 2023-01-03: |
Some thoughts on Prometheus Alertmanager's alert reminders
|
| 2023-01-02: |
Debian has removed Python 2 from its next version
|
| 2023-01-01: |
Research Unix V2 already had a lot of what we think of as 'Unix'
|