MySQL check

reference brazil Updated Sep 29, 2026 1 min read mysql-check.md
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Learn about the credential and permission requirements for the MySQL checks app.mysql.check-mysql-alive, util.metrics-mysql-query, app.mysql.check-mysql-threads, app.mysql.metrics-mysql, app.mysql.metrics-mysql-processes, and util.check-mysql-query

MySQL checks require two separate accounts with different permissions:

MySQL database account

The database user configured in the ServiceNow® credential must have the following permissions:

  • Basic login privilege on the target host and port, or socket
  • SELECT access to whatever schema or table is targeted by a custom query
  • PROCESS privilege for checks that read server-wide thread or connection state
Check Additional requirement
check-mysql-alive Login privilege only
check-mysql-query-result-count, metrics-mysql-query-result-count SELECT access on the object targeted by the configured --query
check-mysql-threads, metrics-mysql-processes PROCESS privilege. Without it, the account only sees its own connection or thread, not the server-wide count, and the check silently under-reports instead of erroring.
metrics-mysql-graphite Login privilege only

Agent Client Collector Agent OS account

There is no special OS permission required. The Agent Client Collector agent OS account only needs additional access if:

  • A UNIX socket is used instead of TCP through --socket. The agent needs read and execute access to the socket file and its parent directory.
  • An ini file is used to source connection settings through --ini or --ini_section, my.cnf-style. The agent needs read access to this ini file.

Depending on the deployment, this typically means group membership on the socket's owning group, or read ACLs on the my.cnf file. It doesn't usually require root or DBA-level access.

Configuration Prerequisites:

  • MySQL or MariaDB TCP endpoint that is reachable from the agent host through --hostname and --port, or through --socket
  • Database credentials are valid and not blocked by host-based grant restrictions, such as user@'agent-host' compared to user@'%'
  • For thread or process metrics, confirm PROCESS is granted by running SHOW GRANTS FOR 'user'@'host';

Parent Topic:Agent Client Collector checks – credential and permission requirements

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