The client cannot complete the SSL or TLS handshake with the MySQL server, so the secure connection is aborted.
MySQL Error 2026: CR_SSL_CONNECTION_ERROR means the SSL or TLS handshake between client and server failed. Verify certificate paths, cipher compatibility, and the --ssl-mode setting, then restart the connection with matching credentials to resolve the issue.
SSL connection error: %s
The message usually reads "SSL connection error: reason_text<\/em>". The placeholder reason_text changes with the underlying OpenSSL or yaSSL library response, helping you pinpoint the root cause.<\/p>
Mismatched TLS versions or disabled ciphers often block the handshake.
Out-of-date OpenSSL libraries, revoked or expired certificates, and incorrect --ssl-mode settings are frequent triggers.<\/p>
Network middleboxes that intercept TLS, such as transparent proxies or older load balancers, can also corrupt the handshake and surface Error 2026.<\/p>
Next, validate certificate files with openssl x509 -noout -text -in client-cert.pem<\/code>.
Check expiry dates and subject names. Replace expired or wrongly named certificates.<\/p>
Common Scenarios and Solutions<\/h3>Local development laptop:<\/strong> Remove --ssl-mode=REQUIRED<\/code> or replace self-signed certs with new ones generated by mysql_ssl_rsa_setup<\/code>.<\/p>
Cloud RDS instance:<\/strong> Download the latest regional root CA from your provider and specify it via --ssl-ca=<\/code> when connecting.<\/p>
Best Practices to Avoid This Error<\/h3>Keep OpenSSL up to date through your OS package manager and restart the MySQL service after upgrades to load new cipher suites.<\/p>
Automate certificate rotation and monitor expiration dates.
Enforce minimum TLS versions consistently across dev, staging, and prod to prevent handshake mismatches.<\/p>
--ssl-mode<\/code> flags.<\/p>Error 2023 (Lost connection to MySQL server during query) can surface if the SSL handshake finishes but a later packet is truncated.
Update network drivers or increase net_read_timeout<\/code>.<\/p>
Galaxy Integration Tip<\/h3>Galaxy automatically surfaces SSL handshake failures in its connection console. Update the connection profile with the correct CA path, client key, and client certificate, then click Re-test to verify the fix.<\/p>.
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