today's howtos
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Moving our /var/mail to be local on our IMAP server has gone very well
We have been operating our Unix environment for a very long time, and as a result we've accumulated what are now historical curiosities. One of them is that we put everyone's inboxes in a traditional /var/mail setup (including having them in mbox format), although almost all of our people now read their email only over IMAP. For a long time this /var/mail filesystem lived on our normal NFS fileservers, and the IMAP server accessed it over NFS, the same as everyone else (for example, our central mail server). Periodically we observed various things on the IMAP server, such as oddly elevated load averages, and certainly we had at least the perception that IMAP INBOX performance was periodically not great. Eventually we decided to try to improve things by making the IMAP server into another fileserver, with /var/mail local to it.
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Using Portainer for Docker Container Management
Docker’s CLI and API are powerful tools, but they can be unwieldy when you’re working with large container fleets or looking for a more visual experience. Portainer, a web-based Docker management system that provides a convenient graphical user interface (GUI), lets you take charge of your containers, images, volumes, and other resources, without memorizing long terminal commands.
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Automatically Publishing a Blogroll from an OPML File
Inspired by a discussion the other day on HackerNews, I wrote a little script that asks Miniflux for a list of my feeds in OPML format and turns it into an AsciiDoc page, which I publish on here, as my BlogRoll & Links page: [...]
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How to Create WiFi Hotspot in Ubuntu
This quick guide explains how to create a WiFi Hotspot in Ubuntu (all supported versions).
Internet connection sharing is not new. It was available as an operating system feature for some time. In Windows 10 or 11, creating a Hotspot with just a click of a button in Settings is straightforward.
In Linux Systems, particularly in Ubuntu-based systems, it was a bit tricky from the beginning. However, in recent Ubuntu 22.04 LTS – it is very straightforward, and you can quickly set up your WiFi hotspot from a desktop/laptop.