Occasional Forums/AUR/Wiki unavailability

2mac · 2014-04-26 13:48:43

Twice in the past 24 hours and once before, I've lost my ability to connect to the server that hosts these forums as well as the Wiki and AUR.

When connecting with a browser, the connection times out. I tried `curl -v` and got "Network is unreachable."

I can ping and traceroute the address with no errors, but HTTP just doesn't come through.

It happens (seemingly) at random, and only time seems to fix it.

This isn't really an Arch issue per se. It affects my entire network, but it's only this one server. Someone on #archlinux thought that it might've been DNS caching, but curl says that it's not there.

Any ideas?

2mac · 2014-04-26 16:04:19

I switched to a different DNS, and that seems to have mitigated the issue. I will leave this open temporarily in case it happens not to be a fix.

2mac · 2014-04-28 13:24:03

It is not a fix. Seems that this just happens regardless of what I do software-side on my Arch box.

It's a network issue, but one that I don't know how to approach fixing.

evr · 2014-04-28 13:31:33

For what it's worth, I noticed the same thing a few days ago. Eventually it started working again and I haven't had the problem since then.

2mac · 2014-04-28 15:47:04

Yeah. That's what happened to me a few weeks ago, but now, it seems to be happening more often. It's especially annoying when trying to perform updates.

ewaller · 2014-04-28 16:07:47

It happens; even for moderators The servers are in Germany and seem to have short lived issues every couple weeks. I don't know who takes care of them, but I thank them for their time and for the great job they do of keeping the running.

2mac · 2014-04-28 22:50:58

It's interesting that only HTTP fails, though. I can ping and traceroute just fine.

fukawi2 · 2014-04-28 22:54:27

2mac wrote:

It's interesting that only HTTP fails, though. I can ping and traceroute just fine.

Try a TCP traceroute

Are you connecting over IPv4 or IPv6 -- I used to have issues with the Hetzner (where the Arch server is hosted) IPv6 prefix getting incorrect routing somewhere in LAX.

ewaller · 2014-04-28 23:34:23

fukawi2 wrote:

I used to have issues with the Hetzner (where the Arch server is hosted) IPv6 prefix getting incorrect routing somewhere in LAX.

Your traffic to Europe passes through Los Angeles? That seems like the long way to go. There is whole lot of ocean between us, my friend
I guess we may not have the fastest internet to the end users, but we have good backbones.

fukawi2 · 2014-04-29 01:14:00

ewaller wrote:

Your traffic to Europe passes through Los Angeles? That seems like the long way to go. There is whole lot of ocean between us, my friend

Yup -- turns out routing through the middle-east/SEA isn't better than going Melbourne => Sydney => LAX => NYC => London => Germany

ewaller · 2014-04-29 03:37:42

fukawi2 wrote:

ewaller wrote:
Your traffic to Europe passes through Los Angeles? That seems like the long way to go. There is whole lot of ocean between us, my friend
Yup -- turns out routing through the middle-east/SEA isn't better than going Melbourne => Sydney => LAX => NYC => London => Germany

Well, at 180 mS, it is not going up to a satellite between Sydney and LA. My back of the envelope round trip time to geosync is about 270 mS, not counting transponder delay.
FO (along a minor circle route) is on the order of 60 mS, not counting transponder delay.

Last edited by ewaller (2014-04-29 03:38:05)

fukawi2 · 2014-04-29 03:46:26

ewaller wrote:

Well, at 180 mS, it is not going up to a satellite between Sydney and LA. My back of the envelope round trip time to geosync is about 270 mS, not counting transponder delay.

We have a couple of fibres landing in various locations along your west coast, via Guam, New Zealand and Hawaii. We're not remote enough to need Satellite (except internally )!

Anyway, we're setting a very bad example so we should bring this back on topic and wait for the OP to try a tcptraceroute next time he/she experiences these problems

Tarqi · 2014-04-29 23:21:50

fukawi2 wrote:

Anyway, we're setting a very bad example so we should bring this back on topic and wait for the OP to try a tcptraceroute next time he/she experiences these problems

Sorry for kicking in here,but I can not resist:

From Germany:

$ traceroute archlinux.org
...
16  dom0.archlinux.org (66.211.214.130)  120.071 ms !X  120.577 ms !X  125.524 ms !X

$ traceroute alderaan.archlinux.org
...
20  alderaan.archlinux.org (78.46.78.247)  21.927 ms  26.046 ms  26.039 ms

Using Root-DNS Servers. I always end in US, less hops, more latency. So the servers seem to be... somewhere

fukawi2 · 2014-04-29 23:35:41

archlinux.org != bbs.archlinux.org (which is CNAME'd to alderaan.archlinux.org)

[www.]archlinux.org is on gudrun.archlinux.org which is hosted at Velocity who appear to sponsor us.

The Wiki, BBS and AUR are all hosted @ Hetzner looking at the IP addresses for them.

Tarqi · 2014-04-29 23:38:53

fukawi2 wrote:

archlinux.org != bbs.archlinux.org (which is CNAME'd to alderaan.archlinux.org)
[www.]archlinux.org is on gudrun.archlinux.org which is hosted at Velocity who appear to sponsor us.
The Wiki, BBS and AUR are all hosted @ Hetzner looking at the IP addresses for them.

I should have checked this (ashamed). Sorry for the noise.

Edit: GRMBL!

Last edited by Tarqi (2014-04-29 23:42:40)

Arch Linux

#1 2014-04-26 13:48:43

Occasional Forums/AUR/Wiki unavailability

#2 2014-04-26 16:04:19

Re: Occasional Forums/AUR/Wiki unavailability

#3 2014-04-28 13:24:03

Re: Occasional Forums/AUR/Wiki unavailability

#4 2014-04-28 13:31:33

Re: Occasional Forums/AUR/Wiki unavailability

#5 2014-04-28 15:47:04

Re: Occasional Forums/AUR/Wiki unavailability

#6 2014-04-28 16:07:47

Re: Occasional Forums/AUR/Wiki unavailability

#7 2014-04-28 22:50:58

Re: Occasional Forums/AUR/Wiki unavailability

#8 2014-04-28 22:54:27

Re: Occasional Forums/AUR/Wiki unavailability

#9 2014-04-28 23:34:23

Re: Occasional Forums/AUR/Wiki unavailability

#10 2014-04-29 01:14:00

Re: Occasional Forums/AUR/Wiki unavailability

#11 2014-04-29 03:37:42

Re: Occasional Forums/AUR/Wiki unavailability

#12 2014-04-29 03:46:26

Re: Occasional Forums/AUR/Wiki unavailability

#13 2014-04-29 23:21:50

Re: Occasional Forums/AUR/Wiki unavailability

#14 2014-04-29 23:35:41

Re: Occasional Forums/AUR/Wiki unavailability

#15 2014-04-29 23:38:53

Re: Occasional Forums/AUR/Wiki unavailability

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