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Felix J. Ogris' private homepage: some stuff about homemade software, FreeBSD, Linux, computers, and hacking in general.

Somewhat more nosy? Mailto www@ogris.de.

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recent news

[2025-06-21] ovpn.py version 3 allows you to sort the client list and routing table by real addresses when clients have connected using an IPv6 address.

[2025-06-08] Environmental sensors based on the ESP8266.

[2025-06-07] getpeercred.c prints the name or the uid of the user connected to a stream oriented local unix socket on stdin, stdout, or stderr (file descriptor 0, 1, or 2, in that order).

[2025-05-25] In case you have to activate a ludicrous amount of swap on your FreeBSD machine, e.g. 200 gigabytes, then add this to /boot/loader.conf and reboot:

kern.maxswzone=1073741824

Otherwise, you will get errors like these:

kernel: warning: total configured swap (57147382 pages) exceeds maximum recommended amount (11842904 pages).
kernel: warning: increase kern.maxswzone or reduce amount of swap.

[2025-05-08] New version of s3file.py fixes two warnings when setting a compliance or governance lock, and does not call utcnow() as it has been deprecated in Python 3.12.

[2025-04-03] If Firefox doesn't accept a server certificate you built with easy-rsa, then generate your SSL certificate with a subject alternative name:

$ easyrsa --subject-alt-name="DNS:www.mydomain.invalid" build-serverClient-full www.mydomain.invalid nopass

RFC 2818 discouraged the use of the common name (CN) attribute in the subject field of a SSL certificate. Most webbrowsers nowadays require subject alternative names to be present.

[2025-03-29] graypold version 12 allows you to specify the maximum number of "void" DNS look-ups per SPF check via the spf_max_void_dns_lookups configuration option. Please see the provided graylib.pm for reference.

[2025-03-21] Building a high available FreeBSD cluster describes how to build a highly available load balancer, dns server, or web server, that also runs out of the box on VMware vSphere. That howto is not suited for clusters which need to synchronize data amongst all nodes, e.g. database clusters, file servers, or so.

[2025-03-07] clucp version 2 comes with several new features:

It has specifically been updated for Corosync 3.
Each file is transferred with and compared against its SHA-1 checksum.
The access and modification time of each file are preserved.
An RC script for FreeBSD is provided.

Not yet implemented:

Correct handling of sparse files
(Adaptive) compression

[2024-10-09] LogBlitz version 21 allows you to wrap lines even on Chrome and Chromium based webbrowsers, and restores the expected cookie behaviour.

[2024-10-03] LogBlitz version 20 allows you to wrap lines.

[2024-09-25] New version of my how to install pgAdmin 4 on FreeBSD 14 fixes two errors, and covers pgAdmin 8.12.

[2024-09-04] Updated how to install pgAdmin 4 on FreeBSD 14 to pgAdmin 8.11.

[2024-08-30] New version of rrd4cmk.pl provides default status texts, and allows you to specify a name, a minimum value, and a maximum value for the metrics.

[2024-08-21] rrd4cmk.pl is a local check for Checkmk that checks an RRD database for thresholds.

[2024-06-30] Random password generator with Python >= 3.6:

$ python -c 'import random, string; print("".join(random.choices(string.ascii_letters+string.digits+string.punctuation, k=16)))'

old news

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