The new hosts seem to be about twice as fast as the old Dallas hosts, judging by the significant drop I’ve observed in the dashboard CPU graphs (my Linode is still running exactly the same services and under the same load).

It is a good idea to run a grep on your entire /etc directory for your old IPs before migrating. I had bound a number of services (apache, mysql) to specific IP addresses and had also configured manual networking – all these things needed changing.

The filtered ports at Atlanta are an issue. Be sure to check the [url=http://www.linode.com/forums/viewtopic.php?t=2625]list[/url] before migrating, and remember that they apply to both incoming and outgoing communications.

Last (and probably least), there don’t seem to be any nameservers provided by Linode at Atlanta, the nearest being at Dallas (only 30ms away anyway). I guess we could use public ones instead but I have yet to look for any of these.

It is about 64ms quicker from London to the East Coast (124ms) than the West Coast (188ms).

This is good news for European customers..!

From [b]London[/b] to [b]East Coast[/b] Linode:
[code]traceroute to 64.22.71.1 (64.22.71.1), 30 hops max, 38 byte packets
1 laptop (192.168.0.9) 2.283 ms 0.617 ms 0.616 ms
2 192.168.1.1 (192.168.1.1) 8.021 ms 3.058 ms 2.635 ms
3 89.242.240.1 (89.242.240.1) 31.365 ms * 31.854 ms
4 lg-200-413.rtr001.bre.opaltelecom.net (62.24.252.69) 33.163 ms 32.697 ms 34.440 ms
5 gig-9-1-rtr001.hex.opaltelecom.net (62.24.254.10) 32.868 ms 60.527 ms 33.895 ms
6 gig0-1-rtr002.hex.opaltelecom.net (62.24.196.38) 36.238 ms 33.155 ms 34.158 ms
7 195.66.226.167 (195.66.226.167) 33.729 ms 34.509 ms 84.530 ms
8 gnax.ge2-3.br01.atl01.pccwbtn.net (63.216.31.158) 122.409 ms 120.595 ms 122.019 ms
9 atl-core-e-gi4-4.gnax.net (209.51.131.30) 122.759 ms 122.463 ms 122.824 ms
10 atl-core-a-tgi2-1.gnax.net (209.51.149.105) 122.064 ms 173.207 ms 121.832 ms
11 l3-atl-18.gnax.net (209.51.131.74) 122.770 ms 122.131 ms *[/code]

From [b]London[/b] to [b]West Coast[/b] Linode:
[code]traceroute to ns.tuberant.com (64.62.190.85), 30 hops max, 38 byte packets
1 laptop (192.168.0.9) 1.499 ms 24.136 ms 24.991 ms
2 192.168.1.1 (192.168.1.1) 3.168 ms 2.869 ms 2.469 ms
3 89.242.240.1 (89.242.240.1) 34.192 ms 36.496 ms 33.288 ms
4 lg-200-413.rtr001.bre.opaltelecom.net (62.24.252.69) 42.925 ms 31.588 ms 32.567 ms
5 * gig-9-1-rtr001.hex.opaltelecom.net (62.24.254.10) 33.238 ms 33.824 ms
6 gig0-0-rtr002.hex.opaltelecom.net (62.24.196.34) 33.830 ms 32.489 ms 31.438 ms
7 lon.he.net (195.66.226.21) 34.262 ms 52.737 ms 34.409 ms
8 pos4-1.gsr12416.nyc.he.net (216.218.200.101) 193.600 ms 115.531 ms 204.243 ms
9 pos11-0.gsr12416.pao.he.net (216.218.227.225) 189.209 ms 187.628 ms 186.765 ms
10 pos5-0.gsr12416.fmt.he.net (216.218.229.33) 186.706 ms 187.115 ms 209.602 ms
11 216.218.217.182 (216.218.217.182) 186.483 ms 199.948 ms 196.921 ms
12 li3-85.members.linode.com (64.62.190.85) 187.769 ms 187.837 ms 186.804 ms[/code]

[i]Update[/i]: corrected some spelling

Yes, you’re right. Thanks for the heads-up — I had in fact repeated it in my DNS.

Now set to the proper number for one day: 86400

Cliff

* After migrating, set TTL in DNS SOA to a more reasonable number again (e.g. 8600 = 1 day).[/quote]

I assume that’s a typo for 86400 = 1 day?

I just migrated my bundle of images to Atlanta. SSH’ing feels a lot snappier than Amsterdam<->Fremont.

FWIW, for others who are thinking of migrating their Linode(s), here are some of the notes I made:

* See Aaron’s post about [url=http://www.linode.com/forums/viewtopic.php?t=2625]"Filtered ports at new datacenter"[/url].

* Prior to starting migration, set TTL in DNS to a low number for affected domains (Zoneedit.com permits a TTL 1200 [20mins] under "Configure SOA"). Ideally, wait for old TTL to expire before commencing the migration.

* transfer rate — between 0800 and 1000 UTC — Fremont -> Atlanta was roughly 40-50MB/min (1GB ~25mins) .

* disk image transfers are uncompressed, so shrink underutilized disk images to speed up the migration.

* New hosts are Ubuntu-based
(Linux hostXX.atlanta.linode.com 2.6.16.36-2-bigmem #1 SMP Tue Dec 26 13:58:52 EST 2006 i686 GNU/Linux).

* Reverse DNS and authorized keys have to be set again.

* After migrating, set TTL in DNS SOA to a more reasonable number again (e.g. 8600 = 1 day).

[EDIT: Feb-22]

* Replaced http://ftp.us.debian.org in /etc/apt/sources.list with http://ftp-mirror.internap.com/pub/debian/ — a mere 3.2ms ping time away. This source also mirrors Ubuntu.)

Cliff

I haven’t had a chance to say welcome, and how it’s nice to have another Linode staff member to help us out around here.

I’d like to suggest that you pick some distinctive avatar for the forums. We can all recognize Caker and Mike at a glance. My first reaction to your post here was "why would this guy know anything about it" until I caught the "Linode Staff" by your name. An avatar we could recognize would really help us to know when we’re seeing an "official" response.

Edit: Funny, mine’s not showing up on this post, and I can’t go look at my profile without a prompt. Maybe there’s some problem with the forum at the moment, and if so, please ignore me!

No complaints, just wondering.