<p>MySQL raises Error 1469 when the hostname portion of a user account or connection contains invalid characters, patterns, or length, blocking authentication and privilege changes.</p>
<p>MySQL Error 1469: ER_HOSTNAME appears when the server cannot parse or validate the host name specified in a GRANT, CREATE USER, or connection attempt. Correct the host entry to a valid DNS name, IP, or wildcard pattern, then flush privileges to resolve the issue.</p>
host name
Error 1469 surfaces with the message "host name" when MySQL rejects the hostname portion of an account or connection request. The server deems the supplied value illegal because it contains invalid characters, exceeds the 60-character limit, or is an unresolvable pattern.
The error typically appears during CREATE USER, GRANT, REVOKE, RENAME USER, or ALTER USER statements but can also arise at connection time if an invalid entry already exists in mysql.user. Replication setups fail for the same reason when master or replica accounts have malformed hosts.
Invalid hostnames block user authentication, halt scheduled jobs, and break application connectivity. Untended, the issue may expose security gaps because intended privileges are never applied. Quick remediation restores access and maintains principle-of-least-privilege compliance.
The server rejects hostnames containing spaces, slashes, hashes, or other non-alphanumeric characters. Overly long names, leading or trailing dots, incorrect wildcard placement, and DNS names that fail to resolve at runtime also trigger the error.
Identify the offending host entry, replace it with a valid IP, DNS name, or '%' wildcard, and reload privileges. Testing the statement in Galaxy's SQL editor helps catch syntax issues before execution.
Malformed host in GRANT statement, stale entry in mysql.user, or automated deployment scripts often introduce the error. Editing the statement or manually updating the table followed by FLUSH PRIVILEGES resolves most cases.
Validate hostnames with REGEXP in CI pipelines, keep names under 60 characters, and prefer IP addresses for internal services. Galaxy's AI copilot can auto-correct host patterns during SQL review.
Errors 1130, 1396, and 1045 also revolve around host or privilege issues. Their fixes overlap: correct credentials and host patterns, then flush privileges.
Characters such as spaces, slashes, hash symbols, or colons make the host value unparsable, prompting MySQL to raise Error 1469.
The mysql.user.host column supports up to 60 characters. Longer names trigger the error during GRANT or CREATE USER.
Using '%example.com' or '*.domain' is illegal. Only '%' or '%.domain.com' patterns are accepted.
Host strings starting with a dot or ending in a dot violate hostname rules and are rejected.
If skip_name_resolve is OFF, MySQL attempts a DNS lookup. Failure to resolve the name triggers the error.
Occurs when a host is not listed in any account with the required privilege.
Raised when attempting to create or drop a user that already exists or lacks adequate permissions.
Generic access denied message for wrong credentials or host mismatch.
Happens when a user lacks privileges to the target database, often due to host mismatch.
No, it appears in MySQL 5.x, 8.x, Percona, and MariaDB because the hostname validation logic is consistent.
Turning skip_name_resolve ON prevents DNS lookups but does not allow illegal characters. You still need a valid hostname or IP.
Granting to '%' opens access from any host. Restrict to subnets or specific domains where possible.
Galaxy's AI copilot flags invalid host patterns in real time and suggests corrections before you run the query, preventing Error 1469.
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