Verify the error in Grab-snapshot-log/logs/mysqld.log.txt:
YYYY-MM-DD TT-MM-SS 16 [ERROR] Got error 126 when reading table './bsc/CONNECTIONLOG'
YYYY-MM-DD TT-MM-SS 16 [ERROR] mariadbd: Index for table 'CONNECTIONLOG' is corrupt; try to repair it
YYYY-MM-DD TT-MM-SS 16 [ERROR] InnoDB: We detected index corruption in an InnoDB type table. You have to dump + drop + reimport the table or, in a case of widespread corruption, dump all InnoDB tables and recreate the whole tablespace. If the mariadbd server crashes after the startup or when you dump the tables. Please refer to https://mariadb.com/kb/en/library/innodb-recovery-modes/ for information about forcing recovery.
Note: The affected table (e.g., ./bsc/CONNECTIONLOG) may vary depending on the environment and can include other tables such as./bsc/groupMembership, ./bsc/radpostauth, or similar.
Important: Ensure that a VM backup/snapshot and an external database backup are taken before proceeding.
Use the OPTIMIZE TABLE command to attempt to resolve the issue:
execute service stop nac
execute db-shell
OPTIMIZE TABLE CONNECTIONLOG;
quit
execute service start nac
If the OPTIMIZE TABLE operation does not resolve the issue, proceed with the ALTER TABLE option:
execute service stop nac
execute db-shell
ALTER TABLE CONNECTIONLOG ENGINE=InnoDB;
quit
execute service start nac
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