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by jwlawler
Sat Apr 18, 2015 10:07 am
Forum: Networking and servers
Topic: NameVirtualHost *:80 has no VirtualHosts
Replies: 1
Views: 921

NameVirtualHost *:80 has no VirtualHosts

I have been running three little websites on my old Rapsberry Pi model B for several years and it has done a very good job. It is not really necessary but I am upgrading it to a new Pi 2. I have loaded Raspbian and I am now configuring Apache. It is working but it has reminded of an annoying problem...
by jwlawler
Wed Apr 01, 2015 4:03 pm
Forum: Beginners
Topic: Web browser recommendations
Replies: 14
Views: 2421

Re: Web browser recommendations

DougieLawson wrote:Try using Opera on Windows. That's the best option.
I just realised that I missed the "on Windows".
by jwlawler
Wed Apr 01, 2015 4:00 pm
Forum: Beginners
Topic: Web browser recommendations
Replies: 14
Views: 2421

Re: Web browser recommendations

kusti8 wrote: I'm pretty sure Opera isn't on the raspberry pi.

I would go for kweb. I tried it out this morning for the first time and it certainly is speedy and works well.
Thanks. I was puzzled by other posts which seemed to say that Opera was not on the Pi. I wondered whether it had recently appeared.
by jwlawler
Wed Apr 01, 2015 3:41 pm
Forum: Beginners
Topic: Web browser recommendations
Replies: 14
Views: 2421

Re: Web browser recommendations

DougieLawson wrote:Try using Opera on Windows. That's the best option.
Thanks, can I install that with apt-get?

John
by jwlawler
Wed Apr 01, 2015 11:56 am
Forum: Beginners
Topic: Web browser recommendations
Replies: 14
Views: 2421

Web browser recommendations

I had expected there to be many posts on this topic but a quick search has not found any which closely match my question. I have owned a Raspberry Pi 1 for years. It gives good service as a web server but not as a client. It runs out of steam on anything but the simplest website. I have just bought ...
by jwlawler
Mon Mar 23, 2015 10:56 am
Forum: General discussion
Topic: Buying a new Pi
Replies: 7
Views: 986

Re: Buying a new Pi

Thanks all. Starting from scratch won't be too hard, I was just feeling lazy.

Any comments on using the new Pi as a web browser?
by jwlawler
Sat Mar 21, 2015 4:19 pm
Forum: General discussion
Topic: Buying a new Pi
Replies: 7
Views: 986

Buying a new Pi

I had my original Pi for years now and I am still happy with it. It runs three little websites for me very well. Its small size and running costs make it excellent for this. However, there is one project that it failed at. I wanted to leave one plugged to the TV with a wireless keyboard and mouse as...
by jwlawler
Sat Oct 18, 2014 9:14 am
Forum: Advanced users
Topic: Using Pi as a DNS server in a home network
Replies: 4
Views: 863

Re: Using Pi as a DNS server in a home network

One of my main concerns is how to integrate DNS on the Pi with the Virgin SuperHub.
by jwlawler
Fri Oct 17, 2014 11:20 pm
Forum: Advanced users
Topic: Using Pi as a DNS server in a home network
Replies: 4
Views: 863

Re: Using Pi as a DNS server in a home network

Dougie,

Thanks.

I forgot to say that I am running Debian.

John
by jwlawler
Fri Oct 17, 2014 9:48 pm
Forum: Advanced users
Topic: Using Pi as a DNS server in a home network
Replies: 4
Views: 863

Using Pi as a DNS server in a home network

Up to now, I have been using a poor man's DNS in my home network. I manually assign a 192.168.0.* address to each device, set a reserved IP address in my Virgin router, and use the hosts table on the devices. However, as the number of devices is growing rapidly, this is becoming tedious. Can I use m...
by jwlawler
Fri Sep 12, 2014 7:18 pm
Forum: Advanced users
Topic: Memory for a web server
Replies: 9
Views: 1562

Re: Memory for a web server

mfa298,

Thanks. I keep an eye on logs and clear them periodically. The growth is real data that I am posting to the site.

John
by jwlawler
Tue Sep 09, 2014 8:46 am
Forum: Advanced users
Topic: Memory for a web server
Replies: 9
Views: 1562

Re: Memory for a web server

Lob0426, Thanks for the suggestions. I already run DenyHosts, would you suggest fail2ban instead or as well as that? The website software is my own. For the numerous attempts to guess at my admin pages, it simply returns page not found. If the attempts are persistent, it blocks the IP and later the ...
by jwlawler
Mon Sep 08, 2014 4:26 pm
Forum: Advanced users
Topic: Memory for a web server
Replies: 9
Views: 1562

Re: Memory for a web server

RaTTus, Now, that's a nice tip - thanks. Rather oddly, my display is a 46" HDTV. Of course, it does not need this but it is near the Pi's home and has a spare HDMI socket so I have convenience of a permanently attached console. I rarely use it though since I usually SSH in from elsewhere. I did expe...
by jwlawler
Mon Sep 08, 2014 3:14 pm
Forum: Advanced users
Topic: Memory for a web server
Replies: 9
Views: 1562

Re: Memory for a web server

RaTTus, Thanks. Is it not memory for a webserver? You mean that I should have said storage, disc? Without traditional discs being involved, I was not sure what was best to say. I am talking about the permanent storage and not the RAM. Fortunately, the RAM is sufficient since I don't think that I can...
by jwlawler
Mon Sep 08, 2014 2:55 pm
Forum: Advanced users
Topic: Memory for a web server
Replies: 9
Views: 1562

Memory for a web server

I run several little websites on my Pi and it does a surprisingly good job. The response times are impressive and my users are surprised when I show them the tiny server. One of the sites generates all of its output dynamically using servlets running in Tomcat and it still performs well. Obviously, ...
by jwlawler
Mon Jul 01, 2013 2:59 pm
Forum: General discussion
Topic: How long can I run the RasPi for?
Replies: 21
Views: 4936

Re: How long can I run the RasPi for?

My Pi commonly runs for weeks or months without a problem. The only two common reasons for stopping it are: the occasional power failure and a deliberate shutdown for software upgrade or a total back up. Be aware that doing a lot of writing to your SD card will eventually cause total file system cor...
by jwlawler
Tue May 28, 2013 9:38 pm
Forum: General discussion
Topic: Measuring radio emission in model B
Replies: 6
Views: 1516

Re: Measuring radio emission in model B

I just bought a Logitech MK260 wireless keyboard and mouse. It works fine with the Pi even though the dongle is not in line of sight of the keyboard or mouse and it is connected to the Pi via a USB hub.
by jwlawler
Tue May 28, 2013 9:35 pm
Forum: General discussion
Topic: Newbie electriconics question..
Replies: 24
Views: 2874

Re: Newbie electriconics question..

Of course, appliances do typically come with plugs and I more lazily assume or trust that an appropriate fuse has been supplied. There is no obvious good reason for the manufacturer to do otherwise. An appropriate fuse BS1362 will almost certainly be fitted in the UK but a manufacturer might choose...
by jwlawler
Tue May 28, 2013 4:39 pm
Forum: General discussion
Topic: Newbie electriconics question..
Replies: 24
Views: 2874

Re: Newbie electriconics question..

In the days when appliances typically came without plugs, I would use the smallest standard fuse that was sufficient for the load. Obviously, this should be less than the rating of the cable but that was normally supplied with the appliance and hence you would hope that the manufacturer fitted an ap...
by jwlawler
Tue May 28, 2013 12:45 pm
Forum: General discussion
Topic: Newbie electriconics question..
Replies: 24
Views: 2874

Re: Newbie electriconics question..

In general they do, but it doesn't stop some one one replacing them with a 13 A which rarely blow as you've noted and so have a long life. In the UK, fuses have a colour coding which is almost universal for the cartridge fuses in plugs, so you can tell their rating without seeing the figures. Red f...
by jwlawler
Tue May 28, 2013 12:02 pm
Forum: General discussion
Topic: Newbie electriconics question..
Replies: 24
Views: 2874

Re: Newbie electriconics question..

The 3 amp one would blow long before a 13 amp. They'll take their rating on a continuous basis, they'll blow inside a second or two at three times their rating. Very little stuff that isn't permanently wired needs 13 amps (~ 3kW at nominal 230V) . Its not a good idea to use 13A fuses for everything...
by jwlawler
Tue May 28, 2013 11:56 am
Forum: General discussion
Topic: Something the Pi is not good at - calculating Pi
Replies: 175
Views: 30692

Re: Something the Pi is not good at - calculating Pi

The Einsein problem bothers me. I always thought it would be great to have piles of that really fast and expesive RAM that is the cache on board your CPU as main RAM. Then your machine would be super fast without all that horrible complication of caches. But what then if your computing elements wer...
by jwlawler
Tue May 28, 2013 11:27 am
Forum: General discussion
Topic: Newbie electriconics question..
Replies: 24
Views: 2874

Re: Newbie electriconics question..

As a kid, I once miswired a circuit and I had a toggle switch directly across the 240V house mains. There was a 13A fuse in the plug and a fuse in the house switch board. When I closed the switch, it exploded but the fuses were fine. I was lucky not to get hurt and I did not make that mistake again...
by jwlawler
Tue May 28, 2013 8:52 am
Forum: General discussion
Topic: Newbie electriconics question..
Replies: 24
Views: 2874

Re: Newbie electriconics question..

Hi I have a question about electronics that is very down-to-earth. Here goes: The GPIO feature of a RPi provides a +5V pin and a 0V (GND) pin. This is just similar to a 5V battery, nothing abstract here. Now I insert a resistor of R Ohm between these two pins, so from Ohm's law I get that the curre...
by jwlawler
Sat May 25, 2013 4:29 pm
Forum: General discussion
Topic: Something the Pi is not good at - calculating Pi
Replies: 175
Views: 30692

Re: Something the Pi is not good at - calculating Pi

Heater, I think that you are probably right. Modern supercomputers generally achieve their superness by being highly parallel. Each individual node may not be especially powerful but there are lots of them. I gave the example a while ago of seeing an IBM supercomputer. They weren't even using their ...

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