コマンドラインを使用した手動バックアップと復元

[Chopper (Martial)]

こんにちは、

壊れた Discourse フォーラムを別のサーバーに移行したいと考えています。バックアップは以下のフォルダにあります。

$ ls /var/discourse/shared/standalone/backups/default
$ forum-2019-05-06-033420-v20180920042415.tar

新しいサーバーでバックアップを読み込もうとしましたが、失敗しました。

$ ./launcher enter app
$ discourse enable_restore
$ gzip public/backups/default/forum-2019-05-06-033420-v20180920042415.tar
$ discourse restore forum-2019-05-06-033420-v20180920042415.tar.gz
Starting restore: forum-2019-05-06-033420-v20180920042415.tar.gz
[STARTED]
'system' has started the restore!
Marking restore as running...
Making sure /var/www/discourse/tmp/restores/default/2019-05-08-180427 exists...
Copying archive to tmp directory...
Unzipping archive, this may take a while...
tar: Unexpected EOF in archive
tar: Error is not recoverable: exiting now
No metadata file to extract.
Validating metadata...
  Current version: 20190508135348
  Restored version: 20180920042415
tar: Unexpected EOF in archive
tar: Error is not recoverable: exiting now
Extracting dump file...
EXCEPTION: /var/www/discourse/lib/backup_restore/restorer.rb:264:in `block in extract_dump': Failed to extract dump file.
tar: Unexpected EOF in archive
tar: Error is not recoverable: exiting now
/var/www/discourse/lib/discourse.rb:29:in `execute_command'
/var/www/discourse/lib/backup_restore/restorer.rb:264:in `block in extract_dump'
/usr/local/lib/ruby/2.6.0/fileutils.rb:128:in `chdir'
/usr/local/lib/ruby/2.6.0/fileutils.rb:128:in `cd'
/var/www/discourse/lib/backup_restore/restorer.rb:263:in `extract_dump'
/var/www/discourse/lib/backup_restore/restorer.rb:58:in `run'
script/discourse:141:in `restore'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/thor-0.20.3/lib/thor/command.rb:27:in `run'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/thor-0.20.3/lib/thor/invocation.rb:126:in `invoke_command'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/thor-0.20.3/lib/thor.rb:387:in `dispatch'
/var/www/discourse/vendor/bundle/ruby/2.6.0/gems/thor-0.20.3/lib/thor/base.rb:466:in `start'
script/discourse:282:in `<top (required)>'
/usr/local/lib/ruby/2.6.0/bundler/cli/exec.rb:74:in `load'
/usr/local/lib/ruby/2.6.0/bundler/cli/exec.rb:74:in `kernel_load'
/usr/local/lib/ruby/2.6.0/bundler/cli/exec.rb:28:in `run'
/usr/local/lib/ruby/2.6.0/bundler/cli.rb:463:in `exec'
/usr/local/lib/ruby/2.6.0/bundler/vendor/thor/lib/thor/command.rb:27:in `run'
/usr/local/lib/ruby/2.6.0/bundler/vendor/thor/lib/thor/invocation.rb:126:in `invoke_command'
/usr/local/lib/ruby/2.6.0/bundler/vendor/thor/lib/thor.rb:387:in `dispatch'
/usr/local/lib/ruby/2.6.0/bundler/cli.rb:27:in `dispatch'
/usr/local/lib/ruby/2.6.0/bundler/vendor/thor/lib/thor/base.rb:466:in `start'
/usr/local/lib/ruby/2.6.0/bundler/cli.rb:18:in `start'
/usr/local/lib/ruby/gems/2.6.0/gems/bundler-1.17.2/exe/bundle:30:in `block in <top (required)>'
/usr/local/lib/ruby/2.6.0/bundler/friendly_errors.rb:124:in `with_friendly_errors'
/usr/local/lib/ruby/gems/2.6.0/gems/bundler-1.17.2/exe/bundle:22:in `<top (required)>'
/usr/local/bin/bundle:23:in `load'
/usr/local/bin/bundle:23:in `<main>'
Trying to rollback...
There was no need to rollback
Cleaning stuff up...
Removing tmp '/var/www/discourse/tmp/restores/default/2019-05-08-180427' directory...
Unpausing sidekiq...
Marking restore as finished...
Notifying 'system' of the end of the restore...
Finished!
[FAILED]

なぜか分かりませんが、以前のフォーラムからのバックアップが破損しており、UI にはアクセスできず、コマンドラインのみ利用可能です。

以前の Discourse からデータベースとファイルを新しい Discourse に手動で移行する方法はありますか？

tar バックアップには以下が含まれています。

[gerhard (Gerhard Schlager)]

It looks like the backup file has been damaged. Maybe something happened to the file during the transfer to the new server. How did you transfer the file between your servers? Try comparing the checksums of the file on both servers. Are they the same?

[pfaffman (Jay Pfaffman)]

You should do what @gerhard said.

Also, if you can access the command line on the old server you can

cd /var/discourse
./launcher enter app
discourse backup

to create a new backup.

You could also rsync the uploads and do an SQL-only backup.

[Chopper (Martial)]

The problem is that the old Discourse is broken. The docker version was to old and the ubuntu was to old too. When rebuilding is was not possible to launch the discourse again. So I cannot do automatic backup only manually.

I try to copy the standalone folder to the new discourse instance and also the app.yml file and rebuild the app but all I have is this page:

Any idea how can I rebuild the discourse with the previous data ?

[pfaffman (Jay Pfaffman)]

I’d try rsyncing the whole /var/discourse folder to the new machine (delete the current one on the new machine first and destroy the current docker image).

EDIT: you could be somewhat selective like not copying logs, but simple is simple.

[Chopper (Martial)]

nice, thx