Error: Solr requires java, please install or set JAVA_HOME properly

Was ist die Lösung?

Solarium Error:

Solarium 5.0.2 is too old and has known issues. In order to get composer to upgrade solarium to a recent version a core patch or a workaround is required. Have a look at this Core issue and this Search API Solr issue.

Error: Apache Solr (Solr-Server Version: 8.5.2) & Drupal 8.9 (search_api_solr: 3.9)

Your config-set contains manually added customizations. Be aware that these will be lost when the config-set needs to be regenerated.

Fehlermeldung: 

SQL Query:

 SELECT CONCAT('DROP TABLE ', table_schema, '.', table_name, ';') AS 'command' FROM information_schema.tables WHERE table_schema = 'MyDatabaseName' INTO OUTFILE '/tmp/sql_delete_all_tables'; 
SOURCE  /tmp/sql_delete_all_tables;

No access to "/tmp"?

 SELECT CONCAT('DROP TABLE ', table_schema, '.', table_name, ';') AS 'command' FROM information_schema.tables WHERE table_schema = 'MyDatabaseName' INTO OUTFILE './sql_delete_all_tables'; 
SOURCE  ./sql_delete_all_tables;

Fehler:

Error: Maximum function nesting level of '256' reached, aborting! in html_entity_decode() (line 386 of /home/512/web/core/lib/Drupal/Component/Utility/Html.php)

Lösung (php.ini):

xdebug.max_nesting_level = 1024

Wenn man DB-Backup wiederherstellen möchte:

drush sql:cli < my-db-backup.sql

 drush sql:dump  | gzip -c > ../db-$(date +%Y-%m-%d-%H%M).sql.gz

Wenn man alle Datenbanken sichern möchte (mit  Datum in Dateiname), Befehl könnte so aussehen:

 mysqldump -u myusername -p --all-databases | gzip -c > all-dbs-$(date +%Y-%m-%d-%H%M).sql.gz

Nur ein Datenbank:

 mysqldump -u myusername -p myDbName | gzip -c > mydbname-$(date +%Y-%m-%d-%H%M).sql.gz

for d in ./*/ ; do (cd "$d" && my_linux_command); done