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I want to backup all 200+ databases on a MySQL server to all-dbs.sql.

I want to exclude the mysql schema.

How can I do that?

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1 Answer 1

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You need to collect all the database names into a space delimited list. Use that for mysqldump

MYSQL_USER=root
MYSQL_PASS=rootpassword
MYSQL_CONN="-u${MYSQL_USER} -p${MYSQL_PASS}"
#
# Collect all database names except for
# mysql, information_schema, and performance_schema
#
SQL="SELECT schema_name FROM information_schema.schemata WHERE schema_name NOT IN"
SQL="${SQL} ('mysql','information_schema','performance_schema')"

DBLISTFILE=/tmp/DatabasesToDump.txt
mysql ${MYSQL_CONN} -ANe"${SQL}" > ${DBLISTFILE}

DBLIST=""
for DB in `cat ${DBLISTFILE}` ; do DBLIST="${DBLIST} ${DB}" ; done

MYSQLDUMP_OPTIONS="--routines --triggers --single-transaction"
mysqldump ${MYSQL_CONN} ${MYSQLDUMP_OPTIONS} --databases ${DBLIST} > all-dbs.sql

Give it a Try !!!

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  • 1
    Just for anyone here reading that is in a similar position to me - you can also just dump everything and manually remove the mysql schema from the dump file, to save time writing/running scripts Jul 2, 2015 at 11:27
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    "Why should we care implementing a simple --ignore-database argument, look at this tiny script, it will do just fine." Aug 28, 2015 at 4:45
  • 1
    It says mysqldump: unknown option '--ignore-database' don't know why, but when I used --ignore-table=information_schema.* it worked. Nov 13, 2015 at 9:38
  • 4
    It's always lovely to read the comments :))) May 25, 2016 at 7:01
  • 3
    @TheStoryCoder It's written in english, but the programming language is bash :D Jun 27, 2016 at 13:35

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