Handling Failed SSL Session Data Reuse in mysqldump

The mysqldump command is used to create backups of MySQL databases. When performing these dumps over SSL connections, there may be scenarios where SSL session data reuse fails, interrupting the dump process. To handle such situations, MySQL provides the option --ssl-session-data-continue-on-failed-reuse.

Here are several examples demonstrating the use of this option:

Example 1: Dumping a database with SSL session data reuse continued on failure.

mysqldump --ssl-session-data-continue-on-failed-reuse -u username -p database_name > backup.sql

This command dumps the database_name database while instructing mysqldump to continue using SSL session data even if reuse fails. The output, backup.sql, contains the database dump.

Verification: To verify if SSL session data reuse continued despite failure, check the generated backup.sql file for any errors related to SSL session data.

Example 2: Dumping a specific table with SSL session data reuse continued.

mysqldump --ssl-session-data-continue-on-failed-reuse -u username -p database_name table_name > table_backup.sql

Similar to Example 1, this command dumps only the table_name table from database_name while handling SSL session data reuse issues.

Verification: Check table_backup.sql for any SSL-related errors after running the command.

Example 3: Dumping all databases with SSL session data handling.

mysqldump --ssl-session-data-continue-on-failed-reuse -u username -p --all-databases > all_databases_backup.sql

This command backs up all databases on the MySQL server, ensuring SSL session data reuse is managed correctly.

Verification: Examine all_databases_backup.sql for SSL session-related issues post-execution.

Example 4: Dumping with SSL session handling in a compressed format.

mysqldump --ssl-session-data-continue-on-failed-reuse -u username -p database_name | gzip > backup.sql.gz

This command dumps database_name and compresses it into backup.sql.gz, while handling SSL session data reuse failures.

Verification: Decompress backup.sql.gz and inspect for SSL-related issues.

Example 5: Dumping with SSL session data management for a specific schema.

mysqldump --ssl-session-data-continue-on-failed-reuse -u username -p --no-create-info database_name > data_only_dump.sql

This command dumps only the data from database_name, excluding schema information, while managing SSL session data reuse.

Verification: Review data_only_dump.sql for SSL errors after the dump operation.

Example 6: Dumping with SSL session data continuation for a specific stored procedure.

mysqldump --ssl-session-data-continue-on-failed-reuse -u username -p --routines database_name > routines_dump.sql

This command dumps database_name, including stored procedures, while ensuring SSL session data reuse is handled.

Verification: Check routines_dump.sql for any SSL session-related issues.

Example 7: Dumping with SSL session data management for a specific view.

mysqldump --ssl-session-data-continue-on-failed-reuse -u username -p --no-data database_name view_name > view_schema.sql

This command dumps the schema of view_name from database_name, excluding data, while managing SSL session data reuse.

Verification: Examine view_schema.sql for any SSL-related issues after the dump.

Example 8: Dumping with SSL session handling and extended inserts.

mysqldump --ssl-session-data-continue-on-failed-reuse -u username -p --extended-insert database_name > extended_inserts.sql

This command uses extended inserts while dumping database_name, ensuring SSL session data reuse is maintained.

Verification: Verify extended_inserts.sql for SSL errors after the dump operation.

Example 9: Dumping with SSL session continuation for a specific trigger.

mysqldump --ssl-session-data-continue-on-failed-reuse -u username -p --triggers database_name > triggers_dump.sql

This command includes triggers while dumping database_name, handling SSL session data reuse throughout the operation.

Verification: Check triggers_dump.sql for any SSL-related issues post-dump.

Example 10: Dumping with SSL session data management and customizing character sets.

mysqldump --ssl-session-data-continue-on-failed-reuse -u username -p --default-character-set=utf8mb4 database_name > utf8mb4_dump.sql

This command specifies the character set as utf8mb4 while dumping database_name, ensuring SSL session data reuse is handled appropriately.

Verification: Inspect utf8mb4_dump.sql for SSL errors to confirm successful handling of SSL session data.

Also check similar articles.

Setting SSL Session Data File in mysqldump
Setting TLS 1.3 Cipher in mysqldump
Configuring SSL FIPS Mode in mysqldump (OpenSSL Only)
Setting TLS Version in mysqldump
Setting Certificate Revocation List Path in mysqldump