This is the standard boring part of creating the template VM. Unsolved DHCP Issues I’ve noticed the DHCP was acting different on Ubuntu 26.04 compared to 24.04, and I’m yet to find the solution. The first boot will get a clientID of 1:<MAC> DHCP and then the second boot will […]
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Notice: Mastodon requires two kinds of cache. Sidekiq queues and home feeds, and the rails cache.Large instances should consider running two or even separate Redis servers. Working from https://docs.joinmastodon.org/admin/scaling/ Mastodon Server: maxmemory-policy: noeviction and appendonly yes, appendfsync everysec because we want to save the state.Cache Server: `maxmemory-policy: allkeys-lru and save […]
Introduction I’ve spent the last few years sitting in the Mastodon Discord, listening to the developers talk about the project. During this time, the Core Dev team has been involved in a lot of conversations about the ecosystem and its future roadmap. Some of these discussions have been passionate. So […]
Notes: Prepare system Install package Notice output Edit /etc/elasticsearch/jvm.options.d/heap.options Add about 50% of the memory for the JVM and the other 50% for the Apache Lucene (full text search) and OS cache.Both values should be the same… last time I checked, having a lower minimum caused a hard error starting […]
This is going to assume the new version is 18, and the database is called mastodon_production. Migration Stages Check Postgres pg_extension (Repack and other extensions) You can check if you used other extensions using this SQL on the old DB. NEWDB: New Cluster sudo pg_createcluster 18 techhubproduction -d /data/18/techhubproduction — […]
With the release of Ubuntu 26.04 LTS, I’ve started to rebuild some of my VMs from 24.04 and took the opportunity to polish the proxmox VM settings. Proxmox: VM CPU Tuning Notice: The details below are about my AMD EYPC Server CPUs, but for proxmox environments with only Intel or […]
Call to action What would you do with 10U of collocation space for free? if you were me, what’s the best/most interesting/most impactful outcome for this rack space? Part 1: The Pitch In February 2025, I moved into a half rack with 20U of capacity in a closed/private and secured […]
Hey Mastodon admins,I’ve noticed lots of errors in the logs and sidekiq dead queue similar to a failure for pushrelay-mast1.your.org. These come from failed mobile/web notification services which are registered for your users… and they fail repeatively! Note: if you know who runs/ran the failing push services, maybe give them […]
Let’s answer the question… Is co-location right for you? Over 12 months ago, I made the switch from cloud VMs to dedicated co-location hosting a Proxmox cluster, and it turned out to be one of the best decisions for my specific needs. This move has allowed me to maintain predictable […]