The utility sar is part of the sysstat package. Note the double ‘s’. Most articles/documentation state that the jobs should be run using cron. On Raspbian buster and Ubuntu 22.04 this no longer works, the utilities work, but the historical database is not collected nor stored. These systems require that systemd run the collector.
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Linux Performance Monitoring
Today, sar, it seems is not part of the Debian distros, one needs to install the package sysstat.
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SSL on a Raspberry Pi
Installing an SSL certificate and enabling https was a faff, here are my notes. …
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Raspbian on Virtual Box
I turned off my Raspberry Pi a couple of weeks ago, I was concerned about its energy draw. FFS. 😲 Also the projects I planned had stalled but like the No 11 bus, another one has come along, So I decided to install a Raspberry Pi in my virtual box instance. Here’s how …
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Event Monitoring
My recent problem with the Raspberry Pi is an event monitoring and notification problem. It’s one, that over my career, I have spent a lot of time considering, but today, I only have one server. I don’t think I need or want to afford something like Zabbix, which comes with a series of event monitors…
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Raspberry Pi and messages
I logged into find my disk too full to use. Why didn’t it tell me? Here are my notes.
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Raspberry Pi III
My third attempt to build a raspberry pi, it seemed easier to start a third page than refactor the last one. Here are my notes. I turned it off in August 22, and back on in Nov 2022. …
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Raspberry Pi and LVM
My NAS Box Fan has failed, I need to decide to repair or replace. One obvious answer is to use my “Pi” to serve out a pair of mirrored USB connected disks. How to do that on a PI? Here are my notes …
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Raspian & APT
This snip was originally created to document the arse-ache I had building my second Pi; it documented problems with Jesse & Stretch. The current release is buster and so much of this content is deprecated. In April 2020, I had reason to explore the code I use to maintain the currency of the apt cache….
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notify-send
While installing docker, I decided I needed to write some notifications to ensure the configuration works. See Docker. I started with a TCL/TK script, which these days looks a bit old school, and writing the packer was (& remains) difficult. Virtualbox reports its status on Ubuntu via a very pretty interface, prettier than Apple script…
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My little mail server
What a pile of poo! I have access to four smtp servers and they all have limits on the distribution list size! (They are all about the same size of 100). Google will allow 2000 per list but only if you use one of their clients. Let’s try and bring up an SMTP server, connect…
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Virtual Box
This page has been live for a long time. Sun Microsystems bought Innotek the authors of Virtual Box, an opensource virtualisation product in 2008. It permits Windows/Linux/Solaris guests on the same operating system. I probably started this page slightly later, my first oracle blog on it was dated May 2008. It mainly describes any guest…
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