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MySQL

If you are getting the following error when trying to dump a large mysql database:
 

mysqldump: Error 2013: Lost connection to MySQL server during query when dumping table XXX

Then try using the --opt flag and save to a .sql.gz file to reduce the IO and the buffering. 

Example command would be something like:
 

mysqldump --opt --quick --max_allowed_packet=1G -h *host* -u *User* -p*Passwort* *database* | gzip > /path/to/sql.gz

That should fix the issue.

Additionally, you can try to the following in /etc/my.cnf:

1. Raise the max packet value to 100M or higher.
2. Comment out timeout value if it's enabled.

Don't forget to restart the MySQL server.

 

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