mirror of
https://github.com/MariaDB/server.git
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c9c28bef3c
This commit does not touch any variable names or any other actual code, and thus should not in any way affect how the code works.
193 lines
5.3 KiB
Bash
193 lines
5.3 KiB
Bash
#!/bin/bash
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#
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### BEGIN INIT INFO
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# Provides: mysql
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# Required-Start: $remote_fs $syslog
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# Required-Stop: $remote_fs $syslog
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# Should-Start: $network $named $time
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# Should-Stop: $network $named $time
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# Default-Start: 2 3 4 5
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# Default-Stop: 0 1 6
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# Short-Description: Start and stop the mysql database server daemon
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# Description: Controls the main MariaDB database server daemon "mysqld"
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# and its wrapper script "mysqld_safe".
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### END INIT INFO
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#
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set -e
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set -u
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${DEBIAN_SCRIPT_DEBUG:+ set -v -x}
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test -x /usr/sbin/mysqld || exit 0
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. /lib/lsb/init-functions
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SELF=$(cd $(dirname $0); pwd -P)/$(basename $0)
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MYADMIN="/usr/bin/mysqladmin --defaults-file=/etc/mysql/debian.cnf"
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# priority can be overridden and "-s" adds output to stderr
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ERR_LOGGER="logger -p daemon.err -t /etc/init.d/mysql -i"
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if [ -f /etc/default/mysql ]; then
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. /etc/default/mysql
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fi
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# Safeguard (relative paths, core dumps..)
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cd /
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umask 077
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# mysqladmin likes to read /root/.my.cnf. This is usually not what I want
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# as many admins e.g. only store a password without a username there and
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# so break my scripts.
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export HOME=/etc/mysql/
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## Fetch a particular option from mysql's invocation.
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#
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# Usage: void mysqld_get_param option
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mysqld_get_param() {
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/usr/sbin/mysqld --print-defaults \
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| tr " " "\n" \
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| grep -- "--$1" \
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| tail -n 1 \
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| cut -d= -f2
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}
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## Do some sanity checks before even trying to start mysqld.
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sanity_checks() {
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# check for config file
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if [ ! -r /etc/mysql/my.cnf ]; then
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log_warning_msg "$0: WARNING: /etc/mysql/my.cnf cannot be read. See README.Debian.gz"
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echo "WARNING: /etc/mysql/my.cnf cannot be read. See README.Debian.gz" | $ERR_LOGGER
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fi
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# check for diskspace shortage
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datadir=`mysqld_get_param datadir`
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if LC_ALL=C BLOCKSIZE= df --portability $datadir/. | tail -n 1 | awk '{ exit ($4>4096) }'; then
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log_failure_msg "$0: ERROR: The partition with $datadir is too full!"
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echo "ERROR: The partition with $datadir is too full!" | $ERR_LOGGER
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exit 1
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fi
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}
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## Checks if there is a server running and if so if it is accessible.
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#
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# check_alive insists on a pingable server
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# check_dead also fails if there is a lost mysqld in the process list
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#
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# Usage: boolean mysqld_status [check_alive|check_dead] [warn|nowarn]
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mysqld_status () {
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ping_output=`$MYADMIN ping 2>&1`; ping_alive=$(( ! $? ))
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ps_alive=0
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pidfile=`mysqld_get_param pid-file`
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if [ -f "$pidfile" ] && ps `cat $pidfile` >/dev/null 2>&1; then ps_alive=1; fi
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if [ "$1" = "check_alive" -a $ping_alive = 1 ] ||
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[ "$1" = "check_dead" -a $ping_alive = 0 -a $ps_alive = 0 ]; then
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return 0 # EXIT_SUCCESS
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else
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if [ "$2" = "warn" ]; then
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echo -e "$ps_alive processes alive and '$MYADMIN ping' resulted in\n$ping_output\n" | $ERR_LOGGER -p daemon.debug
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fi
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return 1 # EXIT_FAILURE
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fi
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}
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#
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# main()
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#
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case "${1:-''}" in
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'start')
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sanity_checks;
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# Start daemon
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log_daemon_msg "Starting MariaDB database server" "mysqld"
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if mysqld_status check_alive nowarn; then
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log_progress_msg "already running"
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log_end_msg 0
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else
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# Could be removed during boot
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test -e /var/run/mysqld || install -m 755 -o mysql -g root -d /var/run/mysqld
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# Start MariaDB!
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/usr/bin/mysqld_safe "${@:2}" 2>&1 >/dev/null | $ERR_LOGGER &
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for i in $(seq 1 "${MYSQLD_STARTUP_TIMEOUT:-30}"); do
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sleep 1
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if mysqld_status check_alive nowarn ; then break; fi
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log_progress_msg "."
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done
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if mysqld_status check_alive warn; then
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log_end_msg 0
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# Now start mysqlcheck or whatever the admin wants.
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output=$(/etc/mysql/debian-start)
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if [ -n "$output" ]; then
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log_action_msg "$output"
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fi
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else
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log_end_msg 1
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log_failure_msg "Please take a look at the syslog"
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fi
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fi
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;;
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'stop')
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# * As a passwordless mysqladmin (e.g. via ~/.my.cnf) must be possible
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# at least for cron, we can rely on it here, too. (although we have
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# to specify it explicit as e.g. sudo environments points to the normal
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# users home and not /root)
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log_daemon_msg "Stopping MariaDB database server" "mysqld"
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if ! mysqld_status check_dead nowarn; then
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set +e
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shutdown_out=`$MYADMIN shutdown 2>&1`; r=$?
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set -e
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if [ "$r" -ne 0 ]; then
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log_end_msg 1
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[ "$VERBOSE" != "no" ] && log_failure_msg "Error: $shutdown_out"
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log_daemon_msg "Killing MariaDB database server by signal" "mysqld"
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killall -15 mysqld
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server_down=
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for i in `seq 1 600`; do
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sleep 1
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if mysqld_status check_dead nowarn; then server_down=1; break; fi
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done
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if test -z "$server_down"; then killall -9 mysqld; fi
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fi
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fi
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if ! mysqld_status check_dead warn; then
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log_end_msg 1
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log_failure_msg "Please stop MariaDB manually and read /usr/share/doc/mariadb-server-10.3/README.Debian.gz!"
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exit -1
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else
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log_end_msg 0
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fi
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;;
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'restart')
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set +e; $SELF stop; set -e
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shift
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$SELF start "${@}"
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;;
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'reload'|'force-reload')
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log_daemon_msg "Reloading MariaDB database server" "mysqld"
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$MYADMIN reload
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log_end_msg 0
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;;
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'status')
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if mysqld_status check_alive nowarn; then
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log_action_msg "$($MYADMIN version)"
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else
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log_action_msg "MariaDB is stopped."
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exit 3
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fi
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;;
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*)
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echo "Usage: $SELF start|stop|restart|reload|force-reload|status"
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exit 1
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;;
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esac
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