New EEVblog web server

[EEVblog]

I'm going to try a new EEVblog web server with sitecloud.com
Could take a few days to process and do a trial transfer, but if you see any hiccups in the next few days, that's likely what's happening. The plan is to change everything over intact, so you won't notice the difference., but we'll see what happens.
Twitter will be where I post updates if/when the shit hits the fan!

Dave.

[Mechatrommer]

man! i just transferring and never been able to restore my previous site yet! now just due to this 1TBytes/month issue, you are transferring too! well, way to go, if you think its good to go

but in case you dont manage, and its like we will not be seeing each other again... i'm sorry for any faults that i've made to you or your blog or to your friends or your pets, and i thank you for anything that you have given us! ahakssss! wish u luck and success!

[EEVblog]

The old server won't be going down, so it it all goes tits-up I can point the DNS back to Hostmonster and it's business as usual!
SiteCloud claim to handle the web site migration for you, so lets see what they can do.
The worst that will happen is a few blog comments and forum posts are lost in the few hours it takes to transfer. Although I should really disable the forum and comments until the change is done.

Dave.

[EEVblog]

Migration is now in progress!

[EEVblog]

Ok, the deed is done.
However there is one quirk I'm interested in if anyone has the technical knowledge to answer it.

Using www.network-tools.com
If I do a trace on eevblog.com I get plenty of timeouts and it eventually can't finish the trace. This is to my new Sitecloud server.

However, if I try the same trace on my old server (hostmonster) using boondaburra.com, there are no timeouts, and completes the trace in 9 hops every time.

Pings to either site are fine and very fast, but it's the trace thing that has me concerned.

Anyone know exactly what this means and what impact (if any) it might have one using this new server to host EEVbog?
i.e. would it impact my search engine ranking or anything else?

Thanks
Dave.

[joelby]

It's nothing to worry about - Amazon are blocking the traceroute packets within their network, or their routers are using private address space. If you have shell access to the server it's running on, you could try the trace from that end to see if it's being blocked at the border router or on those machines.

I just tried doing a ping with the record route option set and got:

   gi1-0-0.bdr1.iad1.internode.on.net (206.223.115.197)
   72.21.197.35
   72.21.222.144
   216.182.224.54
   216.182.224.18
   216.182.232.66

Compare this with the traceroute:


 8  equinix01-iad2.amazon.com (206.223.115.68)  264.754 ms  265.372 ms  266.058 ms
 9  72.21.197.40 (72.21.197.40)  264.802 ms  264.833 ms  265.145 ms
10  72.21.222.149 (72.21.222.149)  265.643 ms *  265.188 ms
11  * * *
12  * * *
13  * * *
14  s1.cloudwelcome.com (184.73.164.210)  265.145 ms  265.384 ms  265.209 ms

So it's the 216.182.x.x routers aren't responding to traceroute.

[Valhallasmith]

Yep, its completely normal.  The response is blocked so it is more difficult to map out the inside of of various providers networks.  All you are getting when you get IPs are the public facing edges.

[Kiriakos-GR]

I would suggest to let this day pass ... with out benchmarks.

There is an serious  issue today with the main Internet connections , between US and Europe. 

I have serious issues all day , but when I connect on the current server ,  my navigation are truly fast ..

When I tried to use the www.network-tools.com  , because the service are located in US ,
I got one report indicating problems .. and time outs .

So, lets forget the benchmarks today ... 

[Simon]

I'm not having any problems and I'm in the UK see looks like this Europe things is  load of rubbish after all 

[slburris]

I've gotten a few "Your attempt to post timed out" or something similar.  Just kept clicking
on the "Post" button until this message went away.  Otherwise things seem to be
acting normally for me.

Scott

[EEVblog]

Hmm, according to my new server, I got these requests for August:

Successful requests: 482,606
Average successful requests per day: 71,029
Successful requests for pages: 36,626
Average successful requests for pages per day: 5,390
Failed requests: 37,830
Redirected requests: 12,538
Distinct files requested: 28,349
Distinct hosts served: 9,865
Data transferred: 283.16 gigabytes
Average data transferred per day: 41.68 gigabytes

What has me worries is the "failed requests", about 8% or so of all accesses.
Anyone know what this means and the significance of it?
I've asked the provider, but won't hold my breath they will answer.

The failed access files are:

Listing the top 30 referring URLs by the number of failed requests, sorted by the number of failed requests.
#reqs   URL
9131   http://www.eevblog.com/
3787   http://www.eevblog.com/podpress_trac/web/206/0/EEVblog33-320x240H264.mp4
3745   http://www.eevblog.com/podpress_trac/web/207/0/EEVblog33part2-320x240H264.mp4
2178   http://www.eevblog.com/episodes/
2000   http://www.eevblog.com/2010/08/01/eevblog-102-diy-constant-current-dummy-load-for-power-supply-and-battery-testing/
97     http://www.eevblog.com/2010/08/01/eevblog-102-diy-constant-current-dummy-load-for-power-supply-and-battery-testing/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed:+ElectronicsEngineeringVideoBlog+(EEVblog)
13     http://www.eevblog.com/2010/08/01/eevblog-102-diy-constant-current-dummy-load-for-power-supply-and-battery-testing/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed:+ElectronicsEngineeringVideoBlog+(EEVblog)&utm_content=Google+Reader
10     http://www.eevblog.com/2010/08/01/eevblog-102-diy-constant-current-dummy-load-for-power-supply-and-battery-testing/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed:+ElectronicsEngineeringVideoBlog+(EEVblog)&utm_content=Google+Feedfetcher
1501   http://eevblog.podsweat.net/
1178   http://www.eevblog.com/2010/07/28/the-dave-jones-chris-gammell-show/
21     http://www.eevblog.com/2010/07/28/the-dave-jones-chris-gammell-show/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed:+ElectronicsEngineeringVideoBlog+(EEVblog)
596   http://www.eevblog.com/2010/08/05/the-dave-jones-chris-gammell-electronics-radio-show-2/
48     http://www.eevblog.com/2010/08/05/the-dave-jones-chris-gammell-electronics-radio-show-2/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed:+ElectronicsEngineeringVideoBlog+(EEVblog)
538   https://www.eevblog.com/forum/index.php
43     https://www.eevblog.com/forum/index.php?topic=640.0
24     https://www.eevblog.com/forum/index.php?board=2.0
23     https://www.eevblog.com/forum/index.php?board=4.0
21     https://www.eevblog.com/forum/index.php?topic=553.0
16     https://www.eevblog.com/forum/index.php?action=unread
15     https://www.eevblog.com/forum/index.php?topic=30.690
12     https://www.eevblog.com/forum/index.php?topic=975.0
12     https://www.eevblog.com/forum/index.php?board=1.20
11     https://www.eevblog.com/forum/index.php?action=search2
10     https://www.eevblog.com/forum/index.php?topic=831.0
10     https://www.eevblog.com/forum/index.php?topic=30.525
508   http://www.eevblog.com/2010/03/31/eevblog-70-turn-your-rigol-ds1052e-oscilloscope-into-a-100mhz-ds1102e/
484   http://www.eevblog.com/merch/
424   http://www.eevblog.com/page/2/
342   http://www.eevblog.com/the-lab/
276   http://www.eevblog.com/2010/08/07/worlds-largest-depth-of-field-laser-hologram/
45     http://www.eevblog.com/2010/08/07/worlds-largest-depth-of-field-laser-hologram/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed:+ElectronicsEngineeringVideoBlog+(EEVblog)
10     http://www.eevblog.com/2010/08/07/worlds-largest-depth-of-field-laser-hologram/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed:+ElectronicsEngineeringVideoBlog+(EEVblog)&utm_content=Google+UK
219   http://www.eevblog.com/about/
212   http://www.eevblog.com/2010/04/18/eevblog-77-rigol-ds1052e-ds1102e-oscilloscope-hack-update/
195   http://www.eevblog.com/page/3/
190   http://www.eevblog.com/amazon/
163   http://www.eevblog.com/all-misc/
156   http://eevblog.com/
144   http://www.eevblog.com/2010/07/25/eevblog-101-hacking-your-own-peltier-lab-thermal-chamber/
144   http://www.eevblog.com/2010/07/11/eevblog-99-100-multimeter-shootout-extech-amprobe-bk-precision-ideal-uei-uni-t-part-1of2/
142   http://www.eevblog.com/2010/06/04/eevblog-91-50-multimeter-shootout/
122   http://www.eevblog.com/2009/10/12/eevblog-37-rigol-ds1052e-oscilloscope-teardown/
107   http://www.eevblog.com/page/4/
107   http://www.eevblog.com/books/
105   http://www.eevblog.com/live-show/
103   http://www.eevblog.com/Antipasto Hardware Blog %E2%80%94 Graphing Calculator on the Beagle Touch
101   http://www.eevblog.com/2009/06/17/eevblog-13-part-1-of-2-digital-storage-oscilloscope-tutorial/
100   http://www.eevblog.com/2009/04/05/eevblog-1-rigol-ds1052e-oscilloscope-reviwed/
6167   [not listed: 432 URLs]

Why so many failed requests for Blog #33 podcast I wonder?

Dave.

[joelby]

"Failed requests" generally means any request that had a 400 or 500 error code. You'd probably have to look at the logs to see when and why this happened, if it's working at the moment.

[EEwannabe]

I've encountered a couple of 503 error's but a refresh fixed them.

- Patrick

[slburris]

So when using the forum looking for unread posts, I've now gotten the
following error a couple times over the past week:

502 Bad Gateway
The server returned an invalid or incomplete response.

Refreshing seems to bring things right back, but it's kinda weird.

Scott

[EEVblog]

So when using the forum looking for unread posts, I've now gotten the
following error a couple times over the past week:

502 Bad Gateway
The server returned an invalid or incomplete response.

Refreshing seems to bring things right back, but it's kinda weird.

Scott

I've seen this once or twice myself. No idea why, but at least the forum and site don't go down for hours on end for me like it used to before the switch.

Dave.

[slburris]

So I hate to say this, but for at least an hour this morning (California time),
I was getting something like:

Service Unavailable

I'm currently seeing some kind of problem with unread messages.  If I click
on "Show unread posts since last visit", I get nothing, but if I just go to
the front page of the forum, some of the forum sections are showing new
posts (i.e. the icon is *not* grayed out).  And the forum stats show a posting
within the last hour.   Kinda puzzled over this split personality.

Scott

[slburris]

Well, I tried logging out and back in again, but that hasn't cured the new messages problem.
Even weirder, I had to click on logout 3 times, because the first 2 times I got this message:

Session verification failed. Please try logging out and back in again, and then try again.

[now getting this session verification message on first try to post this message]

Think I'll just go to bed and hope things are healed overnight :-)

Scott

[dics]

Got the same error myself yesterday : 503
I think it has something to do with the load on the server. Can you measure it, Dave, and maybe tell us the results ?
At least what does /proc/loadavg says. SHould be something like this :

[root@private02 ~]# cat /proc/loadavg
0.36 0.45 0.49 2/214 30494

I had these problems too on a high-traffic server but mine were mostly because of a flood

LE : i keep getting session expired error. I think it has to do with some php.ini modifications you might have made recently.
Any php upgrade or something like this ? Check where your session files are stored (should be in /tmp folder or something else with write access for the owner of the php process). Also try to check if there is enough space on the server (sounds like check if it is plugged in but believe me, i have been in a situation like this; paranoid is not enough)

[allanw]

Yeah I keep getting random session expired errors. It seems to only happen for certain links.

When I hit reply, it works fine. When I hit quote or modify, it doesn't. It seems like any links like:

https://www.eevblog.com/forum/index.php?action=post;quote=14642;topic=1134.0;num_replies=8;sesc=ee15cee151e0229983057736494795a0

Don't work. Note the sesc field. It isn't there for links that do work.

No matter what I do, clear cookies, etc, these links just refuse to work. Unfortunately just removing the field doesn't magically fix it either.

[EEVblog]

I am now on cloud based server (sitecloud.com) specifically to prevent any server load problems!
I have contacted them about this and lets see what happens, because I can't figure it out.
There is now way I can monitor my "compute cycle" usage, they don't have that facility working yet.

Sitecloud.com is looking suckier every day. I should have stuck with Hostmonster.com

Dave.