Hello there,
I got an issue when i launch the command to install magento 2.4
let's see :
SQLSTATE[HY000] [2002] Connection timed out In InstallCommand.php line 274: Parameter validation failed setup:install [--backend-frontname BACKEND-FRONTNAME] [--enable-debug-logging ENABLE-DEBUG-LOGGING] [--enable-syslog-logging ENABLE-SYSLOG-LOGGING] [--remote-storage-driver REMOTE-STORAGE-DRIVER] [--remote-storage-prefix REMOTE-STORAGE-PREFIX] [--remote-storage-bucket REMOTE-STORAGE-BUCKET] [--remote-storage-region REMOTE-STORAGE-REGION] [--remote-storage-key REMOTE-STORAGE-KEY] [--remote-storage-secret REMOTE-STORAGE-SECRET] [--consumers-wait-for-messages CONSUMERS-WAIT-FOR-MESSAGES] [--amqp-host AMQP-HOST] [--amqp-port AMQP-PORT] [--amqp-user AMQP-USER] [--amqp-password AMQP-PASSWORD] [--amqp-virtualhost AMQP-VIRTUALHOST] [--amqp-ssl AMQP-SSL] [--amqp-ssl-options AMQP-SSL-OPTIONS] [--key KEY] [--db-host DB-HOST] [--db-name DB-NAME] [--db-user DB-USER] [--db-engine DB-ENGINE] [--db-password DB-PASSWORD] [--db-prefix DB-PREFIX] [--db-model DB-MODEL] [--db-init-statements DB-INIT-STATEMENTS] [-s|--skip-db-validation] [--http-cache-hosts HTTP-CACHE-HOSTS] [--db-ssl-key DB-SSL-KEY] [--db-ssl-cert DB-SSL-CERT] [--db-ssl-ca DB-SSL-CA] [--db-ssl-verify] [--session-save SESSION-SAVE] [--session-save-redis-host SESSION-SAVE-REDIS-HOST] [--session-save-redis-port SESSION-SAVE-REDIS-PORT] [--session-save-redis-password SESSION-SAVE-REDIS-PASSWORD] [--session-save-redis-timeout SESSION-SAVE-REDIS-TIMEOUT] [--session-save-redis-persistent-id SESSION-SAVE-REDIS-PERSISTENT-ID] [--session-save-redis-db SESSION-SAVE-REDIS-DB] [--session-save-redis-compression-threshold SESSION-SAVE-REDIS-COMPRESSION-THRESHOLD] [--session-save-redis-compression-lib SESSION-SAVE-REDIS-COMPRESSION-LIB] [--session-save-redis-log-level SESSION-SAVE-REDIS-LOG-LEVEL] [--session-save-redis-max-concurrency SESSION-SAVE-REDIS-MAX-CONCURRENCY] [--session-save-redis-break-after-frontend SESSION-SAVE-REDIS-BREAK-AFTER-FRONTEND] [--session-save-redis-break-after-adminhtml SESSION-SAVE-REDIS-BREAK-AFTER-ADMINHTML] [--session-save-redis-first-lifetime SESSION-SAVE-REDIS-FIRST-LIFETIME] [--session-save-redis-bot-first-lifetime SESSION-SAVE-REDIS-BOT-FIRST-LIFETIME] [--session-save-redis-bot-lifetime SESSION-SAVE-REDIS-BOT-LIFETIME] [--session-save-redis-disable-locking SESSION-SAVE-REDIS-DISABLE-LOCKING] [--session-save-redis-min-lifetime SESSION-SAVE-REDIS-MIN-LIFETIME] [--session-save-redis-max-lifetime SESSION-SAVE-REDIS-MAX-LIFETIME] [--session-save-redis-sentinel-master SESSION-SAVE-REDIS-SENTINEL-MASTER] [--session-save-redis-sentinel-servers SESSION-SAVE-REDIS-SENTINEL-SERVERS] [--session-save-redis-sentinel-verify-master SESSION-SAVE-REDIS-SENTINEL-VERIFY-MASTER] [--session-save-redis-sentinel-connect-retries SESSION-SAVE-REDIS-SENTINEL-CONNECT-RETRIES] [--cache-backend CACHE-BACKEND] [--cache-backend-redis-server CACHE-BACKEND-REDIS-SERVER] [--cache-backend-redis-db CACHE-BACKEND-REDIS-DB] [--cache-backend-redis-port CACHE-BACKEND-REDIS-PORT] [--cache-backend-redis-password CACHE-BACKEND-REDIS-PASSWORD] [--cache-backend-redis-compress-data CACHE-BACKEND-REDIS-COMPRESS-DATA] [--cache-backend-redis-compression-lib CACHE-BACKEND-REDIS-COMPRESSION-LIB] [--cache-id-prefix CACHE-ID-PREFIX] [--allow-parallel-generation] [--page-cache PAGE-CACHE] [--page-cache-redis-server PAGE-CACHE-REDIS-SERVER] [--page-cache-redis-db PAGE-CACHE-REDIS-DB] [--page-cache-redis-port PAGE-CACHE-REDIS-PORT] [--page-cache-redis-password PAGE-CACHE-REDIS-PASSWORD] [--page-cache-redis-compress-data PAGE-CACHE-REDIS-COMPRESS-DATA] [--page-cache-redis-compression-lib PAGE-CACHE-REDIS-COMPRESSION-LIB] [--page-cache-id-prefix PAGE-CACHE-ID-PREFIX] [--lock-provider LOCK-PROVIDER] [--lock-db-prefix LOCK-DB-PREFIX] [--lock-zookeeper-host LOCK-ZOOKEEPER-HOST] [--lock-zookeeper-path LOCK-ZOOKEEPER-PATH] [--lock-file-path LOCK-FILE-PATH] [--document-root-is-pub DOCUMENT-ROOT-IS-PUB] [--base-url BASE-URL] [--language LANGUAGE] [--timezone TIMEZONE] [--currency CURRENCY] [--use-rewrites USE-REWRITES] [--use-secure USE-SECURE] [--base-url-secure BASE-URL-SECURE] [--use-secure-admin USE-SECURE-ADMIN] [--admin-use-security-key ADMIN-USE-SECURITY-KEY] [--admin-user [ADMIN-USER]] [--admin-password [ADMIN-PASSWORD]] [--admin-email [ADMIN-EMAIL]] [--admin-firstname [ADMIN-FIRSTNAME]] [--admin-lastname [ADMIN-LASTNAME]] [--search-engine SEARCH-ENGINE] [--elasticsearch-host ELASTICSEARCH-HOST] [--elasticsearch-port ELASTICSEARCH-PORT] [--elasticsearch-enable-auth ELASTICSEARCH-ENABLE-AUTH] [--elasticsearch-username ELASTICSEARCH-USERNAME] [--elasticsearch-password ELASTICSEARCH-PASSWORD] [--elasticsearch-index-prefix ELASTICSEARCH-INDEX-PREFIX] [--elasticsearch-timeout ELASTICSEARCH-TIMEOUT] [--cleanup-database] [--sales-order-increment-prefix SALES-ORDER-INCREMENT-PREFIX] [--use-sample-data] [--enable-modules [ENABLE-MODULES]] [--disable-modules [DISABLE-MODULES]] [--convert-old-scripts [CONVERT-OLD-SCRIPTS]] [-i|--interactive] [--safe-mode [SAFE-MODE]] [--data-restore [DATA-RESTORE]] [--dry-run [DRY-RUN]] [--magento-init-params MAGENTO-INIT-PARAMS]
i just launched the following command :
sudo php bin/magento setup:install --base-url=http://my_public_ip/magento/ --db-host=my_public_ip --db-name=magento --db-user=root --db-password=***** --admin-firstname=****** --admin-lastname=******* --admin-email=************ --admin-user=arkoos --admin-password=******** --language=fr_FR --currency=EUR --timezone=Europe/Paris --use-rewrites=1
I'm lost so if you need more informations, ask me 
Thanks for your future return
