[Box-Admins] squeaksource.com move to Rackspace

Tue Oct 11 06:50:39 UTC 2016

Hi all

On 11.10.2016, at 02:50, David T. Lewis <lewis at mail.msen.com> wrote:

> On Tue, Oct 11, 2016 at 01:30:39AM +0200, Tobias Pape wrote:
>> Hi David.
>> On 07.10.2016, at 04:08, David T. Lewis <lewis at mail.msen.com> wrote:
>> 
>>> Levente, Tobias:
>>> 
>>> The squeaksource.com service seems to be working reliably on the new
>>> Rackspace server dan. It has run for a number of days now, and I have
>>> confirmed that when I kill the VM process, the service is reliably
>>> restarted by supervise.
>> 
>> Great.
>> 
>>> 
>>> When we do the final switchover to Rackspace, I would like to be
>>> responsible for synchronizing the data files and image to ensure
>>> that no updates are lost during the transition. Currently the image
>>> and files on Rackspace are updated as of today, but I will want to
>>> do an additional update right before the actual DNS record change,
>>> and I will also check afterwards to make sure nothing is lost during
>>> the time it may take for the DNS updates to propagate.
>> 
>> The TTL is short, propagation should take ~5min.
>> 
>> Please start the "final" sync, report back, and I'll change the DNS.
>> (but not before 2016-10-11 9:00 CEST, I'm going to bed now)
> 
> I just finished another sync, updated as of Tue Oct 11 00:27:55 UTC 2016.
> 

Thank you.
The DNS of 
	squeaksource.om
	www.squeaksource.com
now points
	alan

For some days, as a backup
	old.squeaksource.com
points to
	box3.squeak.org

Thanks for the move!

> We should probably put out an official notice on the squeak/pharo lists,
> but to be honest I don't think anyone will even notice the change.

We _could_ do that, but I'd rather have a complete statement afterwards.
The short TTL of the DNS somewhat ensures that, if we notice problems
after dns switches, we can switch back immediately without much service
interruption.

> 
> I will be away, returning in about 24 hours. If you are able to do the
> DNS switch during this time frame, I will check back afterwards and do
> any final refresh that may be needed if people have been updating
> squeaksource.com during that time.

As said, done :)

> 
> Note that there usually are not too many updates to squeaksource.com
> during any 24 hour period, and I can find and fix any missed updates
> after the switch.

Thanks.

> 
> Just in case there are problems, I am attaching my notes on how I did
> the refresh from box3 to dan.box today.

(we ought to find a place to put all that new found information)

best regards
	-Tobias

> 
> Thanks!
> Dave
> 
> 
> --- Refresh dan.box from box3 ---
> 
> Check time stamp of last update on the dan.box copy. Look at last entry
> in ss/ss.log, and the file mod time of the squeaksource.4.image that was
> previously copied from box3.
> 
> davidlewis at dan:~$ sudo su - squeaksourcecom
> [sudo] password for davidlewis: 
> squeaksourcecom at dan:~$ ls -l SqueakSource/squeaksource.4.*
> -rw-r--r-- 1 squeaksourcecom www-data  16105802 Oct  7 01:16 SqueakSource/squeaksource.4.changes
> -rw-r--r-- 1 squeaksourcecom www-data 166831012 Oct  7 01:17 SqueakSource/squeaksource.4.image
> squeaksourcecom at dan:~$ date
> Tue Oct 11 00:00:58 UTC 2016
> squeaksourcecom at dan:~$ 
> 
> 
> Thus - we want to update with anything that has changed in the last 5 days
> (to be safe and avoid figuring out exact time zones and so forth).
> 
> Next, go to box3 and get the latest.
> 
> ssdotcom at box3-squeak:~$ pwd
> /home/ssdotcom
> ssdotcom at box3-squeak:~$ cd SqueakSource
> ssdotcom at box3-squeak:~/SqueakSource$ 
> 
> Save all the recently changed files. Find all regular files changed within
> the last 5 days, and save them in an archive file /tmp/ss.tgz:
> 
> ssdotcom at box3-squeak:~/SqueakSource$ tar czvf /tmp/ss.tgz `find . -type f -mtime -5`
> 
> Now go back to dan.box.squeak.org. Copy the /tmp/ss.tgz file into a convenient
> place. Working as user ID sourcesqueakorg, unpack the ss.tgz archive, adding
> new files and updating any that have changed. Among the files that will be
> updated are the ss/ss.log file and the squeaksource.4.image and
> squeaksource.4.changes files.
> 
> squeaksourcecom at dan:~/SqueakSource$ cd /tmp
> squeaksourcecom at dan:/tmp$ scp ssdotcom at squeaksource.com:/tmp/ss.tgz .
> The authenticity of host 'squeaksource.com (173.246.101.237)' can't be established.
> RSA key fingerprint is 6d:c3:8f:4c:53:53:ad:90:21:ba:27:e0:b5:c5:aa:31.
> Are you sure you want to continue connecting (yes/no)? yes
> Warning: Permanently added 'squeaksource.com' (RSA) to the list of known hosts.
> ssdotcom at squeaksource.com's password: 
> ss.tgz                                                                                                     100%   80MB   2.3MB/s   00:34    
> squeaksourcecom at dan:/tmp$ cd
> squeaksourcecom at dan:~$ pwd
> /srv/squeaksourcecom
> squeaksourcecom at dan:~$ cd SqueakSource
> squeaksourcecom at dan:~/SqueakSource$ id
> uid=100001(squeaksourcecom) gid=33(www-data) groups=33(www-data)
> squeaksourcecom at dan:~/SqueakSource$ 
> 
> Note: The squeaksource.4.image is the image copied directly from box3. I leave
> that alone, but copy it to a new working version called squeaksource.5.image.
> Therefore, we are about to replace the old squeaksource.4.image that I copied
> in a few days ago, and we will then copy the new one to squeaksource.5.image,
> which will become the newly updated image that will be run by supervise.
> 
> squeaksourcecom at dan:~/SqueakSource$ ls -l squeaksource.*.image
> -rw-r--r-- 1 squeaksourcecom www-data 166831012 Oct  7 01:17 squeaksource.4.image
> -rw-r--r-- 1 squeaksourcecom www-data 166830960 Oct 10 23:29 squeaksource.5.image
> squeaksourcecom at dan:~/SqueakSource$
> 
> Now unpack the new files over the old:
> 
> squeaksourcecom at dan:~/SqueakSource$ pwd
> /srv/squeaksourcecom/SqueakSource
> squeaksourcecom at dan:~/SqueakSource$ tar xzvf /tmp/ss.tgz
> 
> And copy the updated image to squeaksource.5.image:
> 
> squeaksourcecom at dan:~/SqueakSource$ cp squeaksource.4.image squeaksource.5.image
> squeaksourcecom at dan:~/SqueakSource$ cp squeaksource.4.changes squeaksource.5.changes
> squeaksourcecom at dan:~/SqueakSource$
> 
> Kill the running image and allow supervise to restart with the newly updated
> squeaksource.5.image
> 
> squeaksourcecom at dan:~/SqueakSource$ ps -aef | grep squeakvm
> squeaks+ 12179  9064  0 00:25 pts/0    00:00:00 grep squeakvm
> squeaks+ 21595  9625  8 Oct08 ?        05:52:14 /usr/local/lib/squeak/4.15.8-3749/squeakvm -vm-display-null /srv/squeaksourcecom/SqueakSource/squeaksource.5.image
> squeaksourcecom at dan:~/SqueakSource$ kill -9 21595
> squeaksourcecom at dan:~/SqueakSource$ date
> Tue Oct 11 00:27:55 UTC 2016
> squeaksourcecom at dan:~/SqueakSource$ 
> 
> Wait a couple of minutes and make sure squeaksource.com is back on line :-)