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258 lines
7.5 KiB
258 lines
7.5 KiB
#!/bin/sh
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#
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# mysqld This shell script takes care of starting and stopping
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# the MySQL subsystem (mysqld).
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#
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# chkconfig: 345 64 36
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# description: MySQL database server.
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# processname: mysqld
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# config: /etc/my.cnf
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# pidfile: /var/run/mysqld/mysqld.pid
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# Source function library.
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. /etc/rc.d/init.d/functions
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# Source networking configuration.
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. /etc/sysconfig/network
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exec="/usr/bin/mysqld_safe"
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prog="mysqld"
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# Set timeouts here so they can be overridden from /etc/sysconfig/mysqld
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STARTTIMEOUT=120
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STOPTIMEOUT=600
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# Set in /etc/sysconfig/mysqld, will be passed to mysqld_safe
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MYSQLD_OPTS=
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[ -e /etc/sysconfig/$prog ] && . /etc/sysconfig/$prog
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lockfile=/var/lock/subsys/$prog
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# Support for extra options passed to mysqld
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command=$1 && shift
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extra_opts="$@"
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# Extract value of a MySQL option from config files
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# Usage: get_mysql_option OPTION DEFAULT SECTION1 SECTION2 SECTIONN
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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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option=$1
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default=$2
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shift 2
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result=$(/usr/bin/my_print_defaults "$@" | sed -n "s/^--${option}=//p" | tail -n 1)
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if [ -z "$result" ]; then
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# not found, use default
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result="${default}"
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fi
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}
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get_mysql_option datadir "/var/lib/mysql" mysqld
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datadir="$result"
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get_mysql_option socket "$datadir/mysql.sock" mysqld
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socketfile="$result"
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get_mysql_option log-error "/var/log/mysqld.log" mysqld mysqld_safe
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errlogfile="$result"
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get_mysql_option pid-file "/var/run/mysqld/mysqld.pid" mysqld mysqld_safe
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mypidfile="$result"
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case $socketfile in
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/*) adminsocket="$socketfile" ;;
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*) adminsocket="$datadir/$socketfile" ;;
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esac
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install_validate_password_sql_file () {
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local initfile
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initfile="$(mktemp /var/lib/mysql-files/install-validate-password-plugin.XXXXXX.sql)"
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chmod a+r "$initfile"
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echo "SET @@SESSION.SQL_LOG_BIN=0;" > "$initfile"
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echo "INSERT INTO mysql.component (component_id, component_group_id, component_urn) VALUES (1, 1, 'file://component_validate_password');" >> "$initfile"
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echo "$initfile"
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}
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fix_mysql_upgrade_info () {
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if [ -d "$datadir" ] && [ -O "$datadir/mysql_upgrade_info" ]; then
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chown --reference="$datadir" "$datadir/mysql_upgrade_info"
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if [ -x /usr/bin/chcon ]; then
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/usr/bin/chcon --reference="$datadir" "$datadir/mysql_upgrade_info"
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fi
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fi
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}
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start(){
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[ -x $exec ] || exit 5
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# check to see if it's already running
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RESPONSE=$(/usr/bin/mysqladmin --no-defaults --enable-cleartext-plugin --socket="$adminsocket" --user=UNKNOWN_MYSQL_USER ping 2>&1)
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if [ $? = 0 ]; then
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# already running, do nothing
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action $"Starting $prog: " /bin/true
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ret=0
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elif echo "$RESPONSE" | grep -q "Access denied for user"
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then
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# already running, do nothing
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action $"Starting $prog: " /bin/true
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ret=0
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else
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# prepare for start
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if [ ! -e "$errlogfile" -a ! -h "$errlogfile" -a "x$(dirname "$errlogfile")" = "x/var/log" ]; then
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install /dev/null -m0640 -omysql -gmysql "$errlogfile"
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fi
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[ -x /sbin/restorecon ] && /sbin/restorecon "$errlogfile"
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# mysql_upgrade_info file should be owned by mysql user since MySQL 8.0.16
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fix_mysql_upgrade_info
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if [ ! -d "$datadir/mysql" ] ; then
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# First, make sure $datadir is there with correct permissions
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if [ ! -d "$datadir" -a ! -h "$datadir" -a "x$(dirname "$datadir")" = "x/var/lib" ]; then
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install -d -m0751 -omysql -gmysql "$datadir" || exit 1
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fi
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if [ ! -h "$datadir" -a "x$(dirname "$datadir")" = "x/var/lib" ]; then
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chown mysql:mysql "$datadir"
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chmod 0751 "$datadir"
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fi
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if [ -x /sbin/restorecon ]; then
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/sbin/restorecon "$datadir"
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for dir in /var/lib/mysql-files /var/lib/mysql-keyring ; do
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if [ -x /usr/sbin/semanage -a -d /var/lib/mysql -a -d $dir ] ; then
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/usr/sbin/semanage fcontext -a -e /var/lib/mysql $dir >/dev/null 2>&1
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/sbin/restorecon -r $dir
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fi
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done
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fi
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# Now create the database
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initfile="$(install_validate_password_sql_file)"
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action $"Initializing MySQL database: " /usr/sbin/mysqld --initialize --datadir="$datadir" --user=mysql --init-file="$initfile"
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ret=$?
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rm -f "$initfile"
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[ $ret -ne 0 ] && return $ret
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# Generate certs if needed
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if [ -x /usr/bin/mysql_ssl_rsa_setup -a ! -e "${datadir}/server-key.pem" ] ; then
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/usr/bin/mysql_ssl_rsa_setup --datadir="$datadir" --uid=mysql >/dev/null 2>&1
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fi
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fi
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if [ ! -h "$datadir" -a "x$(dirname "$datadir")" = "x/var/lib" ]; then
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chown mysql:mysql "$datadir"
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chmod 0751 "$datadir"
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fi
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# Pass all the options determined above, to ensure consistent behavior.
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# In many cases mysqld_safe would arrive at the same conclusions anyway
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# but we need to be sure. (An exception is that we don't force the
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# log-error setting, since this script doesn't really depend on that,
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# and some users might prefer to configure logging to syslog.)
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# Note: set --basedir to prevent probes that might trigger SELinux
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# alarms, per bug #547485
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$exec $MYSQLD_OPTS --datadir="$datadir" --socket="$socketfile" \
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--pid-file="$mypidfile" \
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--basedir=/usr --user=mysql $extra_opts >/dev/null &
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safe_pid=$!
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# Spin for a maximum of N seconds waiting for the server to come up;
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# exit the loop immediately if mysqld_safe process disappears.
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# Rather than assuming we know a valid username, accept an "access
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# denied" response as meaning the server is functioning.
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ret=0
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TIMEOUT="$STARTTIMEOUT"
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while [ $TIMEOUT -gt 0 ]; do
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RESPONSE=$(/usr/bin/mysqladmin --no-defaults --enable-cleartext-plugin --socket="$adminsocket" --user=UNKNOWN_MYSQL_USER ping 2>&1) && break
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echo "$RESPONSE" | grep -q "Access denied for user" && break
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if ! /bin/kill -0 $safe_pid 2>/dev/null; then
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echo "MySQL Daemon failed to start."
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ret=1
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break
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fi
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sleep 1
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let TIMEOUT=${TIMEOUT}-1
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done
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if [ $TIMEOUT -eq 0 ]; then
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echo "Timeout error occurred trying to start MySQL Daemon."
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ret=1
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fi
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if [ $ret -eq 0 ]; then
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action $"Starting $prog: " /bin/true
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touch $lockfile
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else
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action $"Starting $prog: " /bin/false
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fi
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fi
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return $ret
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}
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stop(){
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if [ ! -f "$mypidfile" ]; then
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# not running; per LSB standards this is "ok"
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action $"Stopping $prog: " /bin/true
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return 0
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fi
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MYSQLPID=$(cat "$mypidfile")
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if [ -n "$MYSQLPID" ]; then
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/bin/su - mysql -s /bin/bash -c "/bin/kill $MYSQLPID" >/dev/null 2>&1
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ret=$?
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if [ $ret -eq 0 ]; then
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TIMEOUT="$STOPTIMEOUT"
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while [ $TIMEOUT -gt 0 ]; do
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/bin/kill -0 "$MYSQLPID" >/dev/null 2>&1 || break
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sleep 1
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let TIMEOUT=${TIMEOUT}-1
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done
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if [ $TIMEOUT -eq 0 ]; then
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echo "Timeout error occurred trying to stop MySQL Daemon."
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ret=1
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action $"Stopping $prog: " /bin/false
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else
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rm -f $lockfile
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rm -f "$socketfile"
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action $"Stopping $prog: " /bin/true
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fi
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else
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action $"Stopping $prog: " /bin/false
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fi
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else
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# failed to read pidfile, probably insufficient permissions
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action $"Stopping $prog: " /bin/false
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ret=4
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fi
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return $ret
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}
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restart(){
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stop
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start
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}
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condrestart(){
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[ -e $lockfile ] && restart || :
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}
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# See how we were called.
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case "$command" in
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start)
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start
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;;
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stop)
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stop
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;;
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status)
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status -p "$mypidfile" $prog
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;;
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restart)
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restart
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;;
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condrestart|try-restart)
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condrestart
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;;
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reload)
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exit 3
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;;
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force-reload)
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restart
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;;
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*)
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echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload}"
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exit 2
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esac
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exit $?
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