Data Monitoring / MySQL Monitoring
MySQL: Disk capacity and binary logs
A MySQL volume fills even though table data grows slowly. Separate data files, temporary files, binary logs and backup artifacts by size and growth.
Environment and inputs: MySQL 8.4 baseline; Performance Schema consumers, privileges and replication topology affect evidence availability.
Failure scenario
A MySQL volume fills even though table data grows slowly. Confirm the cause before choosing a fix.
Evidence to collect
Separate data files, temporary files, binary logs and backup artifacts by size and growth. Record the time, affected scope and a healthy comparison interval.
Fix the confirmed cause
Apply the approved retention or capacity action to the actual producer and verify replication and recovery needs first. Write the expected result first. Change one relevant setting at a time.
Check the result and hand over
Repeat the check for disk capacity and binary logs using the same scope and a representative interval. Check that the symptom is resolved, expected records are present and downstream results are correct. If coverage, correctness or latency worsens, restore the recorded configuration through the agreed rollback process.
Scope and precautions
Prefer read-only access and limit queries to the relevant period or dataset. This example has not been tested on your systems. Test changes in an approved environment. Keep credentials and sensitive data out of shared evidence.