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| Current File : //proc/thread-self/root/bin/mysqld_pre_systemd |
#! /bin/bash
# Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
# Script used by systemd mysqld.service to run before executing mysqld
get_option () {
local section=$1
local option=$2
local default=$3
local instance=$4
ret=$(/usr/bin/my_print_defaults ${instance:+--defaults-group-suffix=@$instance} $section | \
grep '^--'${option}'=' | cut -d= -f2- | tail -n 1)
[ -z "$ret" ] && ret=$default
echo $ret
}
install_validate_password_sql_file () {
local initfile
initfile="$(mktemp /var/lib/mysql-files/install-validate-password-plugin.XXXXXX.sql)"
chmod a+r "$initfile"
echo "SET @@SESSION.SQL_LOG_BIN=0;" > "$initfile"
echo "INSERT INTO mysql.plugin (name, dl) VALUES ('validate_password', 'validate_password.so');" >> $initfile
echo $initfile
}
my_which () {
save_ifs="${IFS-UNSET}"
IFS=:
ret=0
for file
do
for dir in $PATH
do
if [ -f "$dir/$file" ]
then
echo "$dir/$file"
continue 2
fi
done
ret=1 #signal an error
break
done
if [ "$save_ifs" = UNSET ]
then
unset IFS
else
IFS="$save_ifs"
fi
return $ret # Success
}
fix_flush_caches() {
local instance=$1
flush_caches=$(get_option mysqld_safe flush_caches "0" $instance)
if [ ${flush_caches} = 1 ]; then
if [ ! $(my_which sync) ]; then
echo "sync command not found, required for --flush-caches"
exit 1
# Flush file system buffers.
else
sync
ret=$?
if [ $ret -ne 0 ]; then
# Huh, the sync() function is always successful...
echo "sync failed, check if sync is properly installed"
fi
fi
# Locate sysctl, ensure it exists.
if [ ! $(my_which sysctl) ]; then
echo "sysctl command not found, required for --flush-caches"
exit 1
# Purge page cache, dentries and inodes.
else
sysctl -q -w vm.drop_caches=3
ret=$?
if [ $ret -ne 0 ]; then
echo "sysctl failed, check the error message for details"
exit 1
fi
fi
fi
}
fix_thp_setting() {
[ -e /etc/sysconfig/mysql ] && . /etc/sysconfig/mysql
# If no THP_SETTING variable specified in /etc/sysconfig/mysql don't do anything
if [ ! -z "${THP_SETTING}" ]; then
# Set whatever option is specified in environment file
echo "${THP_SETTING}" > /sys/kernel/mm/transparent_hugepage/defrag
echo "${THP_SETTING}" > /sys/kernel/mm/transparent_hugepage/enabled
fi
}
install_db () {
# Note: something different than datadir=/var/lib/mysql requires SELinux policy changes (in enforcing mode)
# No automatic init wanted
[ -e /etc/sysconfig/mysql ] && . /etc/sysconfig/mysql
[ -n "$NO_INIT" ] && exit 0
local instance=$1
datadir=$(get_option mysqld datadir "/var/lib/mysql${instance:+-$instance}" $instance)
log=$(get_option mysqld 'log[_-]error' "/var/log/mysql${instance:+-$instance}.log" $instance)
# Restore log, dir, perms and SELinux contexts
if [ ! -d "$datadir" -a ! -h "$datadir" -a "x$(dirname "$datadir")" = "x/var/lib" ]; then
install -d -m 0751 -omysql -gmysql "$datadir" || exit 1
fi
if [ ! -e "$log" -a ! -h "$log" -a x$(dirname "$log") = "x/var/log" ]; then
case $(basename "$log") in
mysql*.log) install /dev/null -m0640 -omysql -gmysql "$log" ;;
*) ;;
esac
fi
if [ -x /usr/sbin/restorecon ]; then
/usr/sbin/restorecon "$datadir"
[ -e "$log" ] && /usr/sbin/restorecon "$log"
for dir in /var/lib/mysql-files /var/lib/mysql-keyring ; do
if [ -x /usr/sbin/semanage -a -d /var/lib/mysql -a -d $dir ] ; then
/usr/sbin/semanage fcontext -a -e /var/lib/mysql $dir >/dev/null 2>&1
/sbin/restorecon -r $dir
fi
done
fi
# If special mysql dir is in place, skip db install
[ -d "$datadir/mysql" ] && exit 0
# Create initial db and install validate_password plugin
initfile="$(install_validate_password_sql_file)"
/usr/sbin/mysqld ${instance:+--defaults-group-suffix=@$instance} --initialize \
--datadir="$datadir" --user=mysql --init-file="$initfile"
rm -f "$initfile"
# Generate certs if needed
if [ -x /usr/bin/mysql_ssl_rsa_setup -a ! -e "${datadir}/server-key.pem" ] ; then
/usr/bin/mysql_ssl_rsa_setup --datadir="$datadir" --uid=mysql >/dev/null 2>&1
fi
exit 0
}
fix_thp_setting
fix_flush_caches $1
install_db $1
exit 0