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74 lines
2.1 KiB
Markdown
74 lines
2.1 KiB
Markdown
# Database FAQ
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## Forgot Database Password
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### MySQL/MariaDB/Percona
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Modify user password in panel **Databases** -> **Users**.
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If you forgot the root password, you can view/reset it in **Apps** -> **MySQL/MariaDB/Percona** -> **Manage**.
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### PostgreSQL
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Modify user password in panel **Databases** -> **Users**.
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If you forgot the postgres user password, you can view/reset it in **Apps** -> **PostgreSQL** -> **Manage**.
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## Remote Database Connection
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Only local connections are allowed by default. For remote connections:
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MySQL/MariaDB/Percona:
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1. In **Databases** -> **Users**, create a new user with host set to `%` (allow all IPs) or a specific IP
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2. Allow database port 3306 in the firewall
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PostgreSQL:
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1. Go to **Apps** -> **PostgreSQL** -> **Manage**, edit the main configuration, find `listen_addresses`, uncomment it and change its value to `'*'`
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2. On the same page, edit the user configuration, add a line: `host all username (IP-address/mask/all) scram-sha-256` and save
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3. Restart the PostgreSQL service
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4. Allow database port 5432 in the firewall
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::: warning Security Warning
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It is not recommended to expose database ports to the public network. It is recommended to use SSH tunnels or VPN connections.
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:::
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## Connection Refused
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1. Check if the database service is running
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2. Check user permissions and host settings
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3. Check connection address: Use `localhost` or `127.0.0.1` for local connections
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## Large File Import Failed
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phpMyAdmin has upload limits. For large files, it is recommended to import via command line:
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```shell
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mysql -u username -p database_name < file.sql
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```
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Or upload using the panel's file manager, then execute the import in the terminal.
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## Database Backup
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1. **Backup** -> **Create Backup**, select database
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2. Or use command line:
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```shell
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# MySQL
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mysqldump -u username -p database_name > backup.sql
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# PostgreSQL
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pg_dump -U username database_name > backup.sql
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```
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## Character Set Issues
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To modify character set for existing databases:
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```sql
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ALTER
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DATABASE database_name CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
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```
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