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2020-11-13, 18:43
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#1 |
"James Heinrich"
May 2004
ex-Northern Ontario
22·811 Posts |
mersenne.ca server migration and probable downtime (Nov 2020)
I will be moving mersenne.ca over to a new server this weekend (probably overnight Nov 14-15). I will be taking the site down before I start the migration to avoid getting data out of sync between the two. If everything goes well it'll only be a few hours of offline, but it might be longer. If you want assignments for tf1G or similar you should grab a few days extra supply now.
I'll post back here when I start the migration and when I think it should be finished and working again. |
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2020-11-13, 23:17
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#2 |
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Aug 2020
2×3×19 Posts |
Thank you for sustaining the site and good luck with the migration.
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2020-11-14, 06:09
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#3 | |
"Mike"
Aug 2002
1F0916 Posts |
Quote:
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2020-11-14, 13:15
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#4 |
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Banned
"Luigi"
Aug 2002
Team Italia
112718 Posts |
Thank you James, and (no, I won't say it before you tell us the migration is complete).
Last fiddled with by ET_ on 2020-11-14 at 13:15 |
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2020-11-15, 03:46
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#5 |
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"James Heinrich"
May 2004
ex-Northern Ontario
22·811 Posts |
Migration is started, but running into some snags. The Plesk Migrator is very handy, but unfortunately when copying databases it simply does a monolithic mysqldump of all tables, uncompressed and then copies that over. Which is fine for smaller sites, but mersenne.ca runs off 1138 (no THX) tables of a total size I haven't yet calculated, but the old server only had about 45GB free, even after I freed another 10GB that wasn't close to enough. So I'm going to have to manually migrate the database table-by-table, which is ok but takes more human-time than letting it run automated.
So downtime for mersenne.ca will be somewhat longer than expected, likely for at least the next 12h or more. |
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2020-11-15, 04:11
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#6 |
Jun 2003
3×5×17×19 Posts |
Is it possible to directly dump the backups into the new server (via shared folder)?
Last fiddled with by axn on 2020-11-15 at 04:11 |
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2020-11-15, 04:13
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#7 |
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"James Heinrich"
May 2004
ex-Northern Ontario
22·811 Posts |
Probably, for someone who knows how, but that's beyond my knowledge. I'll just muddle along with what I know works.
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2020-11-15, 07:56
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#8 | |
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"James Heinrich"
May 2004
ex-Northern Ontario
324410 Posts |
Quote:
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2020-11-15, 08:20
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#9 | |
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Jun 2003
12ED16 Posts |
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2020-11-15, 08:32
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#10 |
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"James Heinrich"
May 2004
ex-Northern Ontario
324410 Posts |
Manual DB dump is complete, I've now got a local backup of all the database files (17GB gzip'd) that I'm currently uploading to the new server while I sleep and then in the morning I'll manually import the missing large tables on the new server. Hopefully with Xeon+SSD that won't be as painfully slow as I've seen previously with Atom+HDD. Nevertheless, importing building ~140GB of database will take some time. I also need to attend to a couple other domains that share this server before I can plug it back in and turn it on. I'm hoping it can be online sometime later tomorrow (i.e. 12-18h from now) but we'll see how it goes. It's now 3:30am and my brain needs some off-time.
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2020-11-15, 09:08
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#11 | |
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Jun 2003
3×5×17×19 Posts |
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