## Major Upgrade This Evening, Downtime

Both the Linux-laptop I name ‘Klystron’, and the server of this Web-site, this server being named ‘Phoenix’, received a major update this evening. On ‘Phoenix’, a total of 78 packages needed to be updated, including a Kernel-Update, and a Graphics-Driver Update. This collective update effectively converted both computers from Debian 8.7 to Debian 8.8 systems. And both updates appear to have succeeded, at first glance without breaking anything.

However, this was an update that required a reboot for ‘Phoenix’, even though this is my Web-server, and so my site was also down briefly, from approximately 20h40 until 20h50.

I am happy to say however, that ‘Phoenix’ had been running for 58 days straight, without requiring any reboot whatsoever until tonight.

Oh, but I must disappoint some of my readers with the fact that performing these updates also required I restart my ‘memcached‘ service, which means that pages or postings the readers like to visit most often will be a bit slower to fetch, until this server-side caching is replenished.

Dirk

## WordFence

One of the facts which I have written about before, is that my blog is set up in a slightly customized way, with core PHP files that come from the Debian package manager, and which do not have permission bits set, so that the Web-server can write to them, but also with add-ons – aka plugin-ins – with permission bits set so that the server can. This latter detail is a great convenience for me, because it allows me to install plug-ins from WordPress.org, as well as to install updates to those, via means that are simple for me to operate.

What I have also written, is that this makes my overall security good, but not perfect. Theoretically, there could be a corrupted plug-in available directly from WordPress.org – even though in general, they do their best to vet those – and which I could install to my blog, without knowing it. Further, even if the plug-in contains no dirty code visible to WordPress.org, the way some of them work might depend on a Web-service from their author, and then that URL could be running some sort of suspicious scripts, let us say on yet another server.

And so a reasonable question to ask might be, of what use WordFence can be in my case. One of the types of scans which this security add-on performs, is a check of all my core files, against what the versions are with WordPress.org, not with Debian. And then this scan reports 58 deviations to me, without analyzing them, just because Debian has slightly different core-file-versions. It also checks my entire plug-in directory, scans all the plug-ins, etc.. But in reality, WordFence never reported any kind of anomaly in my plug-ins, because those are the WordPress.org versions.

## Core Update Tonight, Downtime

This evening, a very deep upgrade was pushed through the package repositories, affecting my computer. This update included 108 packages, included the core C libraries, and converted my Debian 8.6 system into a Debian 8.7 system. Such an update requires we do a reboot, even though we are using Linux.

Because I host my Web-site on my private server at home, this meant that my site and blog were offline from about 22h40 until 22h50. Further, even though my ‘WordPress’ blogging engine has a ‘Maintenance Mode’ window that in can display, this window requires that the Web-server be running to display, while maybe maintenance work could be underway on WordPress itself. Therefore, it was not an option for me to display this, because my whole Apache server was briefly offline.

I hope that this 10-minute interruption did not pose an inconvenience to any of my readers.

Having said all that, it looks on the surface as though the upgrade was a success, and was not botched in any way – thus only the very short reboot interval.

Oh yes. Because my caching daemon was also restarted, the Web-server aspect of this blog will be slightly slow for the next day or so.

Dirk