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Hi. I'm a Unix Administrator, mathematics enthusiast, and amateur philosopher. This is where I rant about that which upsets me, laugh about that which amuses me, and jabber about that which holds my interest most: Unix.

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multi-arch kubernetes on amd64 and arm64 with Raspberry Pi 3B+s

Posted 09-22-2019 at 06:24 AM by rocket357 (Musings on technology, philosophy, and life in the corporate world)

There's a bug in the go runtime that prevents etcd from working properly on armv7l devices. Calico and Helm/Tiller don't run on armv7l. And as I mentioned in my last post, Docker images are *really* limited on arm32v7 platforms. Raspbian sadly has not updated to arm64, so I switched the Raspberry Pis over to Debian Buster from here: https://people.debian.org/~gwolf/ras...PREVIEW.img.xz Since the Raspberry Pi 3B+ is actually a 64 bit machine (but...

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dnscrypt-proxy on docker on kubernetes on Raspberry Pis

Posted 08-31-2019 at 05:33 AM by rocket357 (Musings on technology, philosophy, and life in the corporate world)

I recently constructed a Raspberry Pi cluster for testing a few distributed systems (ceph, primarily, which failed fantastically due to the 1G memory of the Raspberry Pi 3 B+...I managed to get it *running*, but anytime there was a *recovery operation* the cluster slowed to a halt). More recently I put rak8s on the Pis to test out Kubernetes, using the default Docker backend.

Problem is, arm32v7 Docker images are severely limited, especially compared to what is available on amd64....

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acme-client fails with "file exists"

Posted 07-27-2019 at 06:47 AM by rocket357 (Musings on technology, philosophy, and life in the corporate world)
Updated 07-28-2019 at 12:58 AM by rocket357

Running OpenBSD-6.5 on a machine with two internet uplinks (shared on a common local network), I noticed that acme-client would die with "file exists" over and over again.

The problem was in how acme works when using http-01. In this mode, acme-client will reach out to the Lets Encrypt endpoints (v2 at the time of this writing) and ask for a certificate. Since it's using http-01, Lets Encrypt will then reach out to the domain the certificate is for (which needs to be the...

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Adventures in OpenBSD softraid

Posted 12-09-2018 at 09:55 AM by rocket357 (Musings on technology, philosophy, and life in the corporate world)

Hosted at one of the small-ish cloud providers I have a small VM that I recently resized. Along with a small bump in RAM (for the same price), I was able to secure a bit more storage space. Win-win, right?

I have an OpenBSD RAID volume on the server. Built within this RAID volume is a softraid crypto virtual disk. I decided to resize this crypto volume, so I've booted the server up with the ramdisk kernel. First, I resized the physical volume's layout, so a quick "fdisk...

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"Are we there yet?"

Posted 12-06-2018 at 08:03 AM by rocket357 (Musings on technology, philosophy, and life in the corporate world)
Updated 12-07-2018 at 02:45 AM by rocket357

Windows has this nasty habit of spamming a dhcp server with DHCPINFORM messages unless the dhcp server provides a proxy auto-configuration script. As I've not yet found a way to make Windows stop doing this, I've set up the following in my dhcpd.conf:

Code:

option autoproxy-script "http://10.42.0.11/wpad.pac";

The above is for OpenBSD dhcpd. For dnsmasq:

Code:

dhcp-option=252,http://10.42.0.11/wpad.pac

Or for ISC dhcpd:

Code:

option

...

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