mirror of
https://github.com/MariaDB/server.git
synced 2025-01-15 19:42:28 +01:00
3f44efaa17
Adapted from upstream commit8171f9da87but separated only the datadir section from the commit and wrote it in a way that does not trigger Shellcheck or English grammar nags. This check is intentionally not added to the preinst script as was done upstream in30fb72ca6eas the preinst script will always create the data directory if missing, and thus checking for it right after the creation is moot.
282 lines
7.5 KiB
Bash
282 lines
7.5 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 $time
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# Default-Start: 2 3 4 5
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# Default-Stop: 0 1 6
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# Short-Description: Start and stop the MariaDB database server daemon
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# Description: Controls the main MariaDB database server daemon "mariadbd"
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# and its wrapper script "mysqld_safe".
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### END INIT INFO
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#
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set -e
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set -u
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${DEBIAN_SCRIPT_DEBUG:+ set -v -x}
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test -x /usr/sbin/mariadbd || exit 0
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# shellcheck source=/dev/null
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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 ]
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then
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# shellcheck source=/dev/null
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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 ]
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then
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# shellcheck source=/dev/null
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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 ]
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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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# If datadir location is not customized in configuration
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# then it's not printed with /usr/sbin/mariadbd --print-defaults
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# and this should fall back to a sane default value
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if [ -z "$datadir" ]
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then
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datadir="/var/lib/mysql"
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fi
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# Verify the datadir location exists
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if [ ! -d "$datadir" ] && [ ! -L "$datadir" ]
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then
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log_failure_msg "$0: ERROR: Can't locate MariaDB data location at $datadir"
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echo "ERROR: Can't locate MariaDB data location at $datadir" | $ERR_LOGGER
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exit 1
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fi
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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" ]
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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!" | $ERR_LOGGER
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exit 1
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fi
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}
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## Checks if there is a server running and if so if it is accessible.
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#
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# check_alive insists on a pingable server
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# check_dead also fails if there is a lost mariadbd in the process list
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#
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# Usage: boolean mariadbd_status [check_alive|check_dead] [warn|nowarn]
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mariadbd_status () {
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ping_output="$($MYADMIN ping 2>&1)"
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# The whole mariadbd_status function should be rewritten in clean shell script,
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# so ignore minor Shellcheck nag for now as fixing it would be half of the
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# rewrite
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# shellcheck disable=SC2181
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ping_alive="$(( ! $? ))"
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ps_alive=0
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pidfile="$(mariadbd_get_param pid-file)"
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if [ -f "$pidfile" ] && ps "$(cat "$pidfile")" >/dev/null 2>&1
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then
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ps_alive=1
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fi
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# Using '-a' is unstandard, but it works and might be needed for the grouping
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# of the if-else, so keep it and just ignore in Shellcheck
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# shellcheck disable=SC2166
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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 ]
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then
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return 0 # EXIT_SUCCESS
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else
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if [ "$2" = "warn" ]
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then
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echo -e "$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
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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 _ in $(seq 1 "${MYSQLD_STARTUP_TIMEOUT:-30}")
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do
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sleep 1
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if mariadbd_status check_alive nowarn
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then
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break
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fi
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log_progress_msg "."
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done
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if mariadbd_status check_alive warn
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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" ]
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then
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log_action_msg "$output"
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fi
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else
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log_end_msg 1
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log_failure_msg "Please take a look at the syslog"
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fi
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fi
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;;
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'stop')
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# * As a passwordless mysqladmin (e.g. via ~/.my.cnf) must be possible
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# at least for cron, we can rely on it here, too. (although we have
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# to specify it explicit as e.g. sudo environments points to the normal
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# users home and not /root)
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log_daemon_msg "Stopping MariaDB database server" "mariadbd"
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if ! mariadbd_status check_dead nowarn
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then
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set +e
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shutdown_out="$($MYADMIN shutdown 2>&1)"
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r=$?
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set -e
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if [ "$r" -ne 0 ]
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then
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log_end_msg 1
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[ "$VERBOSE" != "no" ] && log_failure_msg "Error: $shutdown_out"
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log_daemon_msg "Killing MariaDB database server by signal" "mariadbd"
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killall -15 mariadbd
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server_down=
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for _ in {1..600}
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do
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sleep 1
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if mariadbd_status check_dead nowarn
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then
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server_down=1
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break
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fi
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done
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if test -z "$server_down"
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then
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killall -9 mariadbd
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fi
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fi
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fi
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if ! mariadbd_status check_dead warn
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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
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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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