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			79 lines
		
	
	
	
		
			2.9 KiB
		
	
	
	
		
			Bash
		
	
	
		
			Executable file
		
	
	
	
	
			
		
		
	
	
			79 lines
		
	
	
	
		
			2.9 KiB
		
	
	
	
		
			Bash
		
	
	
		
			Executable file
		
	
	
	
	
| #!/bin/bash
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| #
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| # This file is included by /etc/mysql/debian-start
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| #
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| 
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| ## Check MyISAM and Aria unclosed tables.
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| # - Requires the server to be up.
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| # - Is supposed to run silently in background.
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| function check_for_crashed_tables() {
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|   set -e
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|   set -u
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| 
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|   # But do it in the background to not stall the boot process.
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|   logger -p daemon.info -i -t"$0" "Triggering myisam-recover for all MyISAM tables and aria-recover for all Aria tables"
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| 
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|   # Checking for $? is unreliable so the size of the output is checked.
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|   # Some table handlers like HEAP do not support CHECK TABLE.
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|   tempfile=$(mktemp)
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| 
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|   # We have to use xargs in this case, because a for loop barfs on the
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|   # spaces in the thing to be looped over.
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| 
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|   # If a crashed table is encountered, the "mariadb" command will return with a status different from 0
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|   set +e
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| 
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|   LC_ALL=C $MARIADB --skip-column-names --batch -e  '
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|       select concat('\''select count(*) into @discard from `'\'',
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|                     TABLE_SCHEMA, '\''`.`'\'', TABLE_NAME, '\''`'\'')
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|       from information_schema.TABLES where TABLE_SCHEMA<>'\''INFORMATION_SCHEMA'\'' and TABLE_SCHEMA<>'\''PERFORMANCE_SCHEMA'\'' and ( ENGINE='\''MyISAM'\'' or ENGINE='\''Aria'\'' )' | \
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|     xargs -i ${MARIADB} --skip-column-names --silent --batch \
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|                     --force -e "{}" &>"${tempfile}"
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|   set -e
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| 
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|   if [ -s "$tempfile" ]; then
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|     (
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|       /bin/echo -e "\n" \
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|         "Improperly closed tables are also reported if clients are accessing\n" \
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|  	"the tables *now*. A list of current connections is below.\n";
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|        $MYADMIN processlist status
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|     ) >> "${tempfile}"
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|     # Check for presence as a dependency on mailx would require an MTA.
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|     if [ -x /usr/bin/mailx ]; then
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|       mailx -e -s"$MYCHECK_SUBJECT" $MYCHECK_RCPT < "$tempfile"
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|     fi
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|     (echo "$MYCHECK_SUBJECT"; cat "${tempfile}") | logger -p daemon.warn -i -t"$0"
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|   fi
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|   rm "${tempfile}"
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| }
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| 
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| ## Check for tables needing an upgrade.
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| # - Requires the server to be up.
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| # - Is supposed to run silently in background.
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| function upgrade_system_tables_if_necessary() {
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|   set -e
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|   set -u
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| 
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|   logger -p daemon.info -i -t"$0" "Upgrading MySQL tables if necessary."
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| 
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|   # Filter all "duplicate column", "duplicate key" and "unknown column"
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|   # errors as the script is designed to be idempotent.
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|   LC_ALL=C $MYUPGRADE \
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|     2>&1 \
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|     | egrep -v '^(1|@had|ERROR (1051|1054|1060|1061|1146|1347|1348))' \
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|     | logger -p daemon.warn -i -t"$0"
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| }
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| 
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| ## Check for the presence of both, root accounts with and without password.
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| # This might have been caused by a bug related to mysql_install_db (#418672).
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| function check_root_accounts() {
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|   set -e
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|   set -u
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| 
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|   logger -p daemon.info -i -t"$0" "Checking for insecure root accounts."
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| 
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|   ret=$( echo "SELECT count(*) FROM mysql.user WHERE user='root' and password='' and plugin in ('', 'mysql_native_password', 'mysql_old_password');" | $MARIADB --skip-column-names )
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|   if [ "$ret" -ne "0" ]; then
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|     logger -p daemon.warn -i -t"$0" "WARNING: mysql.user contains $ret root accounts without password!"
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|   fi
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| }
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