typo3：无法使用mysql数据库

Question

Currently I try to migrate a typo3 based Webserver to a new machine. (its my first migration, so please don't judge if I did smth wrong). What I did so far:

• transfer Files via wget on new machine
• create dbdump with mysqldumb
• transfer dump with wget
• create database with mysql source <dumpfile.sql>
• create user with access to the db

When I try to connect with the server, typo3 doesn't response. And when I try to install typo3 from skretch and replace the new database with the old one, I also run into internal server errors. Is there a solution on how to migrate the database correctly?

Yours Sincerely,

Sebastian

Answer 1

Mh,

this should not be an issue in general.

We often use following steps:

• [SRC] BackupDatabase: MYSQL_PWD="DBPASS" mysqldump -uDBUSER --opt -e -Q --skip-comments --single-transaction=true | gzip >dump.sql.gz MYSQL_PWD="DBPASS" mysqldump -uDBUSER --opt -e -Q --skip-comments --single-transaction=true | gzip >dump.sql.gz
• [SRC] Pack the installation and the used core: tar -czf transfer.tar.gz ./typo-webfolder ./typo3_src-VERSION
• Transfer both .gz files to new server (wget, scp, ftp etc )
• [NEW] Deflate files: tar -xzf transfer.tar.gz
• [NEW] Create a empty database, using your fav tool
• [NEW] Import database: gunzip <dump.sql.gz | MYSQL_PWD="DBPASS" mysql -uDBUSER [-hDBHOST] NEWDBNAME gunzip <dump.sql.gz | MYSQL_PWD="DBPASS" mysql -uDBUSER [-hDBHOST] NEWDBNAME
• [NEW] Adjust DatabaseCredentials in `typo3conf/LocalConfiguration.php'
• [NEW] Recheck symlinks (typo3_src, typo3, index.php)
• [NEW] Recheck .htaccess files - maybe missed to pack and transfer ?
• [NEW] Create FlagFile touch typo-webfolder/typo3conf/ENABLE_INSTALL_TOOL
• [NEW] Open install tool in Webbrowser ( http://newdomain.tld/typo3/install ), checking requirements, maybe fixing folderstructure and so on, clearing all caches

Eventually clear the typo3temp folder (can be repopulated by the system)

In our projects, we are setting the DB Credentials through AdditionalConfiguration.php based on Enviroment Variables (read from a .env file )

So in generell there should not be any issues, but withour more information it is hard to help you further.

Some things:

• Proxy/TrustedProxy settings
• DomainRecord Settings in the Database ( sys_domain )
• RealUrl Config With DomainName based settings
• .htaccess Canonical rewrite rules based on domain/hostname
• Missing needed php modules etc., wrong php version, checking php error log

Answer 2

in general your workflow is usable. (don't forget the filesystem fileadmin/ and typo3conf/ext/ )
but there are some traps.
be sure to delete the corresponding caches for all changes in filesystem or database.

if you transfer the database: make sure you always use UTF-8 coding of everything!

regarding filesystem: there could be thumbnails or other resized images (folder __processed__/ ) but there also are entries in the database for each file and each resizing.

all extensions or configuration are cached in typo3temp/Code/*, also have in mind the autoloader files.

in most cases you can do a clean-up in the install tool.
so the first thing should be:
start the install tool, do all checks and remove all temporary information.