Kernel Update today, Downtime

I take the somewhat unusual approach, of hosting my site and therefore also this blog, on a private PC at home which I name ‘Phoenix’. This is not how sites are usually hosted. And what it means is that, while I get to play with my own server all I want, the visibility of this blog on the Internet, is only as good, as the up-time and the connectivity of this PC.

This evening a Kernel Update was put through the system, which required I reboot this Linux computer. Therefore, my site and blog were off-line from about 20h00 until about 20h15.

I apologize for any inconvenience to my readers, but these things must be done.

The kernel update itself seemed to have no ill effects, that I can detect immediately. But in all honesty, if there was ever anything wrong with a kernel update, there are essentially two types of problems which can take place:

  1. The computer immediately refuses to boot,
  2. It takes a long time to detect a problem, and when this is done, the problem is usually also detected by somebody other than me.

So because I’m back up, there’s nothing to complain about! :-)

FWIW, this computer had been running one session, for 35 days straight, with no real technical issues.

Dirk

 

Power Failure Last Afternoon, Downtime

I take the unusual approach, of hosting my Web-site, and therefore also this blog, on one of my PCs at home, which I name ‘Phoenix’. What this means is that the visibility of this site and blog is only as good, as the availability of this PC.

Unfortunately, we had a power failure yesterday afternoon from about 14h55, that lasted until about 0h00 this morning. It’s unusual even for Montreal, for the power to be out for so long.

Because I was sleeping when the power came back on, I did not reboot ‘Phoenix’ until about 3h15 this morning, from which point on this site and blog were available again.

I apologize for any inconvenience to my readers.


I suppose that I could make a wild guess, as to why the power was out for so long, last night. At 15h00, the temperature outside was still 31⁰C, and we were having a severe thunderstorm. Any thunderstorm will have as side-effect, to overload the power-grid, in parts of the world like Montreal, where much of the distribution wires – that carry 14.4kV – are above-ground. This is because, every time a lightning bolt strikes the actual power line, this causes a brief brownout, which will usually not be enough to cause my computers to crash, but which will cause scores of air-conditioner compressor-motors to stall, simultaneously.

The combination of a severe overload, with outside temperatures of 31⁰C, which had not subsided yet, may have caused one of the main transformers in the transformer stations to fail. If that did happen, I’m guessing that the main problem of our power-utility would have been, to find a replacement for one like that quickly. The next problem would have been, actually to install the new transformer as a replacement for the old, blown one, quickly.

All in all I’m happy, that my computers – and this site – are Up again.

(Update 08/30/2018, 13h45 : )

I have written in another part of my blog, that when I am inside and there is inclement weather, I tend not to notice strong winds that are outside at all. Well after setting foot outside today, I compared my power failure with power failures that other people had, also yesterday. The picture I got was, there were numerous power failures, not one, and different times at which each person’s power was restored again. What this means is that not all the power failures, can have been caused, by one transformer blowing.

Dirk

 

Power Failure Tonight, Downtime

I take the somewhat unusual approach, of hosting my site, and this Blog, on a personal computer which I name ‘Phoenix’. This means that the availability of this Blog is only as good, as that of the PC in question, and its presence on the Internet.

Tonight there was a power failure at 18h30, for which reason this Blog also went off-line.

The actual power-failure only lasted 10 minutes. But there was never any obvious reason why it would have happened in the first place, for which I reason I do not know whether to expect more power-failures. For the same reason, I chose to wait until 20h15 tonight, to reboot ‘Phoenix’, at which time my site and Blog also became available again.

Because it was never clear as to why the power failed this time, there is the ongoing possibility, that there could be more power failures in the overnight hours. I apologize for any inconvenience to my readers.

(Updated 08/22/2018, 14h25 : )

Continue reading Power Failure Tonight, Downtime

Change Of IP Address last night, Downtime

I take the unusual approach of hosting my site and Blog, on my private PC at home, acting as a Web-server. It’s the computer I name ‘Phoenix’. Because of that, the visibility of my site is only as good, as the presence of my LAN on the Internet.

At the same time, my connection to the Internet is ‘only’ a domestic DSL, which achieves speeds of up to 50Gbps. This means that my ISP, is capable of changing the IP address at any time, with which my LAN is connected to the WAN. This is a right which they have, and is referred to as conventional ‘DHCP’.

Last night, my ISP did change the IP address, with which my LAN connects to the Internet. And what this means to my readers is, that from about 2h47 until about 3h17 this morning, local time, my Blog was also off-line.

I should also note that this minor interruption to my service took place at a time, when most domestic users don’t use the Internet, but during which many customers are sleeping. Therefore, this would also have been an ideal time by conventional standards, for my ISP to carry out any maintenance they had to carry out.

But nevertheless, I apologize to any readers for the fact that during this brief interval in time, they would not have been able to access my site.

Dirk