mirror of
https://github.com/MariaDB/server.git
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fe32a4a5bb
AWK in used in Debian SysV-init and postinst scripts to determine is there enough space starting MariaDB database or create new database to target destination. These AWK scripts can be rewrited to use pure SH or help using Coreutils which is mandatory for usage of MariaDB currently. Reasoning behind this is to get rid of one very less used dependency
225 lines
6.4 KiB
Bash
225 lines
6.4 KiB
Bash
#!/bin/bash
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#
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### BEGIN INIT INFO
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# Provides: mariadb
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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 $time
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# Default-Start: 2 3 4 5
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# Default-Stop: 0 1 6
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# Short-Description: Start and stop the mysql database server daemon
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# Description: Controls the main MariaDB database server daemon "mariadbd"
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# and its wrapper script "mysqld_safe".
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### END INIT INFO
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#
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set -e
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set -u
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${DEBIAN_SCRIPT_DEBUG:+ set -v -x}
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test -x /usr/sbin/mariadbd || 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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if [ -f /usr/bin/mariadb-admin ]
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then
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MYADMIN="/usr/bin/mariadb-admin --defaults-file=/etc/mysql/debian.cnf"
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elif [ -f /usr/bin/mysqladmin ]
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then
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MYADMIN="/usr/bin/mysqladmin --defaults-file=/etc/mysql/debian.cnf"
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else
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log_failure_msg "Command mariadb-admin/mysqladmin not found! This SysV init script depends on it."
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exit -1
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fi
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if [ ! -x /usr/bin/mariadbd-safe ]
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then
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log_failure_msg "/usr/bin/mariadbd-safe not found or executable! This SysV init script depends on it."
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exit -1
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fi
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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/mariadb -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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# Also source default/mariadb in case the installation was upgraded from
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# packages originally installed from MariaDB.org repositories, which have
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# had support for reading /etc/default/mariadb since March 2016.
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if [ -f /etc/default/mariadb ]; then
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. /etc/default/mariadb
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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 mariadbd_get_param option
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mariadbd_get_param() {
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/usr/sbin/mariadbd --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 mariadbd.
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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=`mariadbd_get_param datadir`
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# As preset blocksize of GNU df is 1024 then available bytes is $df_available_blocks * 1024
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# 4096 blocks is then lower than 4 MB
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df_available_blocks=`LC_ALL=C BLOCKSIZE= df --output=avail "$datadir" | tail -n 1`
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if [ "$df_available_blocks" -lt "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!" | $ERR_LOGGER
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exit 1
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fi
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}
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## Checks if there is a server running and if so if it is accessible.
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#
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# check_alive insists on a pingable server
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# check_dead also fails if there is a lost mariadbd in the process list
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#
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# Usage: boolean mariadbd_status [check_alive|check_dead] [warn|nowarn]
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mariadbd_status () {
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ping_output=`$MYADMIN ping 2>&1`; ping_alive=$(( ! $? ))
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ps_alive=0
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pidfile=`mariadbd_get_param pid-file`
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if [ -f "$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" "mariadbd"
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if mariadbd_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 /run/mysqld || install -m 755 -o mysql -g root -d /run/mysqld
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# Start MariaDB!
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/usr/bin/mariadbd-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 mariadbd_status check_alive nowarn ; then break; fi
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log_progress_msg "."
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done
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if mariadbd_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 "$output"
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fi
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else
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log_end_msg 1
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log_failure_msg "Please take a look at the syslog"
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fi
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fi
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;;
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'stop')
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# * As a passwordless mysqladmin (e.g. via ~/.my.cnf) must be possible
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# at least for cron, we can rely on it here, too. (although we have
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# to specify it explicit as e.g. sudo environments points to the normal
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# users home and not /root)
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log_daemon_msg "Stopping MariaDB database server" "mariadbd"
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if ! mariadbd_status check_dead nowarn; then
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set +e
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shutdown_out=`$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: $shutdown_out"
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log_daemon_msg "Killing MariaDB database server by signal" "mariadbd"
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killall -15 mariadbd
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server_down=
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for i in `seq 1 600`; do
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sleep 1
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if mariadbd_status check_dead nowarn; then server_down=1; break; fi
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done
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if test -z "$server_down"; then killall -9 mariadbd; fi
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fi
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fi
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if ! mariadbd_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/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 "${@}"
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;;
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'reload'|'force-reload')
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log_daemon_msg "Reloading MariaDB database server" "mariadbd"
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$MYADMIN reload
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log_end_msg 0
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;;
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'status')
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if mariadbd_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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'bootstrap')
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# Bootstrap the cluster, start the first node
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# that initiates the cluster
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log_daemon_msg "Bootstrapping the cluster" "mariadbd"
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$SELF start "${@:2}" --wsrep-new-cluster
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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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