This happened when my cacti crashed after a power failure.
Repair a table inside database
This will repair host table in cacti databse
# mysqlcheck -r cacti host -u root -p
The following checks, optimizes and repairs all the corrupted table in cacti database.
# mysqlcheck -u root -p --auto-repair -c -o cacti
Check All Tables and All Databases
To check all the tables and all the databases use the “–all-databases” along with -c option as shown below.
# mysqlcheck -c -u root -p --all-databases Enter password:
Additional Useful Mysqlcheck Options
The following are some of the key options that you can use along with mysqlcheck.
- -A, –all-databases Consider all the databases
- -a, –analyze Analyze tables
- -1, –all-in-1 Use one query per database with tables listed in a comma separated way
- –auto-repair Repair the table automatically it if is corrupted
- -c, –check Check table errors
- -C, –check-only-changed Check tables that are changed since last check
- -g, –check-upgrade Check for version dependent changes in the tables
- -B, –databases Check more than one databases
- -F, –fast Check tables that are not closed properly
- –fix-db-names Fix DB names
- –fix-table-names Fix table names
- -f, –force Continue even when there is an error
- -e, –extended Perform extended check on a table. This will take a long time to execute.
- -m, –medium-check Faster than extended check option, but does most checks
- -o, –optimize Optimize tables
- -q, –quick Faster than medium check option
- -r, –repair Fix the table corruption