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SHOW VARIABLES LIKE 'log_error';
Open the log file mentioned in the output and look for error messages that occurred around the time of the crash.
SHOW GLOBAL STATUS;
Pay attention to variables like `Threadsconnected`, `Maxusedconnections`, `Innodbrowlocktimeavg`, and `Innodbbufferpoolwait_free` to understand the load and performance at the time of the crash.
SET GLOBAL slow
query
log = 'ON';
SET GLOBAL slowquery
log
file = '/path
to
log/slow
query.log';
SET GLOBAL longquery
time = 2;
Replace `/pathtolog/slowquery.log` with your desired log file path and adjust `longquery_time` as necessary.
SHOW PROCESSLIST;
SHOW STATUS LIKE 'Threads_connected';
This can help identify unexpected spikes in connections or long-running processes that need to be addressed.
OPTIMIZE TABLE tablename;
for each table that might be causing issues.
Remember, always backup your databases before making significant changes or updates to ensure you can restore data if something goes wrong.
(Perfect for DevOps & SREs)
(Perfect for DevOps & SREs)
Get Instant Solutions for Kubernetes, Databases, Docker and more
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(Perfect for DevOps & SREs)
(Perfect for DevOps & SREs)