Ubuntu LoCo DNS nsset tool needs some Perl love

Recently I had to use the nsset commandline tool, which can be used to modify the DNS records of your Ubuntu LoCo (Local Community). The nsset tool can be found on the LoCo Teams DNS Admin wiki page in the attachments section. Just want to say that I really appreciate this tool and want to thank all contributors! I’ve discovered a bug (deprecation actually), which I can not fix. To be honest, I am a SysAdmin and not a programmer.

Firefox privacy settings breaks Netflix

Mozilla Firefox has been a privacy-first browser for years and is excellent. Recently I found my way to (yet another page on the excellent) page on the Arch wiki, about Firefox privacy. There I found out about the following setting (which can be modified in about:config) to increase/enhance your privacy to resist fingerprinting even more: privacy.resistFingerprinting The wiki page includes a warning (which, I hoped for, would have been exaggerated). It made me find a bug in the website of a primary school, but also broke DRM playback for a major streaming service.

Veeam plugin for Oracle RMAN and dmidecode

Veeam has a plugin for Oracle RMAN. Unfortunately this plugin encountered a slightly grumpy sysadmin who wants to keep servers secure. the documentation In the the official documentation they state to run the tool and it should just work. We got the following output (I’ve omitted the output after the error): user@host:~$ ./OracleRMANConfigTool --wizard Enter backup server name or IP address [hostname]: Enter backup server port number [10006]: Enter username [username]: Enter password for username [(do not change the existing password)]: Available backup repositories: 1.

AMD proprietary graphics drivers on Ubuntu 23.04

Somewhat recently I was reading about x265 (High Efficiency Video Coding (HEVC)) and noticed it had quite some (space) advantages over its predecessor x264 (Advanced Video Coding (AVC)). I have a large family video collection (which keeps growing) and thought I might save some space and bandwidth, by converting them from 264 to 265. Reading up on my GPU ( 6600 XT ) specifications, it should support hardware encoding! Then my time got consumed by other projects, until…

Docker rootless - one masquerading bug to rule them all

Preferbly I use podman, but sometimes you are forced to use docker. Ideally you then switch to docker rootless, because of, well, security. I noticed that the docker rootless installation instructions are not ideal (e.g. contain a bug). Took me a while to figure it out though, but wanted to share. Especially since this might mean, more people (who explicitly want or need to run docker) can run docker safer (rootless).

Small issues (and fixes) when moving to Ubuntu 23.04

Recently I upgraded my main Ubuntu system from 22.10 (Kinetic Kudu) to 23.04 (Lunar Lobster). I’m used to having little downtime and only minor issues. The same applies now, except that I had some small issues. Since I can not be the only one, I wanted to share these (YMMV). pipewire Sound worked fine after the update, except for the volume knob of my Das Keyboard 4 (Ultimate Edition). Controlling the volume via the GUI worked fine by the way.

Patriot Burst Elite SSD and SMART

TL;DR Do not buy Patriot Burst Elite 1920GB if you expect normal SMART information. If you have one and are looking for the SMART values, skip to the end. Price / performance So I started looking around for a large SSD with a good price/performance ratio. Then I found the Patriot Burst Elite 1920GB SSD from Patriot Memory. It has a 3 year warranty and 800 TB TBW (Total Bytes Written), for about 96,- euro (including shipping).

Podman volume - Permission denied

Recently I was using podman and started prometheus and was unpleasantly surprised with the following errors: ts=2022-07-13T06:35:38.724Z caller=query_logger.go:113 level=error component=activeQueryTracker msg="Failed to create directory for logging active queries" ts=2022-07-13T06:35:38.724Z caller=query_logger.go:91 level=error component=activeQueryTracker msg="Error opening query log file" file=/prometheus/data/queries.active err="open data/queries.active: no such file or directory" panic: Unable to create mmap-ed active query log goroutine 1 [running]: github.com/prometheus/prometheus/promql.NewActiveQueryTracker({0x336d549, 0x5}, 0x14, {0x3d8ba20, 0xc0004e3590}) /app/promql/query_logger.go:121 +0x3cd main.main() /app/cmd/prometheus/main.go:618 +0x69d3 exit code: 2 At first I focused on the mmap-ed panic message, but that was the result of an earlier error.

Moved back to hugo

Switched back from Nikola to Hugo, mostly because I want to standardize efforts. Selected the mainroad theme to keep it simple. Found some handy RSS tips so that is working now also as expected (for me).

Microsoft Outlook can not communicate with Postfix

This week I received a incident that someone was unable to send e-mails (it suddenly stopped working) and shortly after that, another incidicent with the same issue was received. In both cases Microsoft Outlook was used as the e-mail client and Postfix was running on the (e-mail)server. TL;DR: this out-of-band patch fixes the issue. The postfix logs did not show any concrete errors: postfix/submission/smtpd[8479]: SSL_accept error from some.rdns.entry[1.2.3.444]: lost connection postfix/submission/smtpd[8479]: lost connection after STARTTLS from some.