93 lines
2.9 KiB
Bash
93 lines
2.9 KiB
Bash
#!/bin/sh
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# This script creates the mysql data directory during first service start.
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# In subsequent starts, it does nothing much.
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# extract value of a MySQL option from config files
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# Usage: get_mysql_option SECTION VARNAME DEFAULT
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# result is returned in $result
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# We use my_print_defaults which prints all options from multiple files,
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# with the more specific ones later; hence take the last match.
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get_mysql_option(){
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result=`/usr/bin/my_print_defaults "$1" | sed -n "s/^--$2=//p" | tail -n 1`
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if [ -z "$result" ]; then
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# not found, use default
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result="$3"
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fi
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}
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# Defaults here had better match what mysqld_safe will default to
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get_mysql_option mysqld datadir "/var/lib/mysql"
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datadir="$result"
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get_mysql_option mysqld_safe log-error "/var/log/mariadb/mariadb.log"
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errlogfile="$result"
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# Absorb configuration settings from the specified systemd service file,
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# or the default "mysqld" service if not specified
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SERVICE_NAME="$1"
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if [ x"$SERVICE_NAME" = x ]
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then
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SERVICE_NAME=mysqld.service
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fi
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myuser=`systemctl show -p User "${SERVICE_NAME}" |
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sed 's/^User=//'`
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if [ x"$myuser" = x ]
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then
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myuser=mysql
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fi
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mygroup=`systemctl show -p Group "${SERVICE_NAME}" |
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sed 's/^Group=//'`
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if [ x"$mygroup" = x ]
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then
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mygroup=mysql
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fi
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# Set up the errlogfile with appropriate permissions
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touch "$errlogfile"
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chown "$myuser:$mygroup" "$errlogfile"
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chmod 0640 "$errlogfile"
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[ -x /sbin/restorecon ] && /sbin/restorecon "$errlogfile"
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# We check if there is already a process using the socket file,
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# since otherwise this systemd service file could report false
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# positive result when starting and mysqld_safe could remove
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# a socket file, which actually uses a different daemon.
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if fuser "$socketfile" &>/dev/null ; then
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echo "Socket file $socketfile exists." >&2
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echo "Is another MySQL daemon already running with the same unix socket?" >&2
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exit 1
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fi
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# Make the data directory
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if [ ! -d "$datadir/mysql" ] ; then
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# First, make sure $datadir is there with correct permissions
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# (note: if it's not, and we're not root, this'll fail ...)
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if [ ! -e "$datadir" -a ! -h "$datadir" ]
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then
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mkdir -p "$datadir" || exit 1
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fi
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chown "$myuser:$mygroup" "$datadir"
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chmod 0755 "$datadir"
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[ -x /sbin/restorecon ] && /sbin/restorecon "$datadir"
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# Now create the database
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echo "Initializing MySQL database"
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/usr/bin/mysql_install_db --datadir="$datadir" --user="$myuser"
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ret=$?
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if [ $ret -ne 0 ] ; then
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echo "Initialization of MySQL database failed." >&2
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echo "Perhaps /etc/my.cnf is misconfigured." >&2
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# Clean up any partially-created database files
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if [ ! -e "$datadir/mysql/user.frm" ] ; then
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rm -rf "$datadir"/*
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fi
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exit $ret
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fi
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# In case we're running as root, make sure files are owned properly
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chown -R "$myuser:$mygroup" "$datadir"
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fi
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exit 0
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