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MySQL 1213: Deadlock found when trying to get lock.

  1. Identify the Queries Involved in the Deadlock:


- Run `SHOW ENGINE INNODB STATUS;` to get the latest information about InnoDB engine status, which includes the last deadlock.
- Look for the section LATEST DETECTED DEADLOCK. This section shows information about the transactions involved in the last deadlock, including the SQL statements.

  1. Review the Transaction Isolation Level:


- Execute `SELECT @@GLOBAL.txisolation, @@txisolation;` to check the current transaction isolation levels. Sometimes adjusting the isolation level can reduce the likelihood of deadlocks.

  1. Analyze Lock Waits:


- Use `SHOW OPEN TABLES WHERE In_use > 0;` to find tables that are currently locked.
- Run `SHOW PROCESSLIST;` to see which threads are running and possibly involved in lock contention.

  1. Kill Blocking Queries if Necessary:


- If you identify a query that is causing a deadlock and it is safe to terminate, use `KILL [thread id];` where `[thread id]` is the ID of the process you want to stop.

  1. Retry the Operation:


- After investigating, retry your operation. Deadlocks are transient errors, and retrying the operation is a common approach.

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Debug Your Infrastructure

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AWS CloudWatch
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Pod Stuck in CrashLoopBackOff
Database connection timeout
Docker Container won't Start
Kubernetes ingress not working
Redis connection refused
CI/CD pipeline failing

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