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#!/bin/bash
set -e
. /usr/share/debconf/confmodule
if [ -n "$DEBIAN_SCRIPT_DEBUG" ]; then set -v -x; DEBIAN_SCRIPT_TRACE=1; fi
${DEBIAN_SCRIPT_TRACE:+ echo "#42#DEBUG# RUNNING $0 $*" 1>&2 }
export PATH=$PATH:/sbin:/usr/sbin:/bin:/usr/bin
# This command can be used as pipe to syslog. With "-s" it also logs to stderr.
ERR_LOGGER="logger -p daemon.err -t mysqld_safe -i"
# Start the server with networking disabled and socket in a temporary location
# Usage: start_server <datadir> <tmpdir> <skip_grant>
# Params:
# datadir - Location of database files
# tmpdir - Used to store temporary pid and socket files
# skip_grant - If set, the server will be started with --skip-grant-tables
start_server() {
local datadir=$1
local tmpdir=$2
local skip_grant=$3
# If a database is already running, mysqld will keep trying to lock the files for ~100 seconds before failing.
# If the ibdata1 file is locked we fail immediately
if fuser "$datadir/ibdata1"; then
echo "ERROR: Database files are locked. Daemon already running?" >&2
return 1
fi
# The --daemonize flag makes the process fork, with the original exiting once the database is ready for use
if [ ! -z "$skip_grant" ]; then
mysqld --user=mysql --daemonize --socket="$tmpdir/mysqld.sock" --pid-file="$tmpdir/mysqld.pid" --skip-networking --skip-grant-tables
else
mysqld --user=mysql --daemonize --socket="$tmpdir/mysqld.sock" --pid-file="$tmpdir/mysqld.pid" --skip-networking
fi
}
# Shut down the server by sending a kill signal to the process
# Usage: stop_server <tmpdir>
# Params:
# tmpdir - Location of temporary pid-file
# Returns:
# 0 - Shutdown successful
# 1 - Shutdown took longer than 3 minutes
stop_server(){
local tmpdir=$1
# Check if pid file still exists before attempting to get the pid
local server_pid=$(cat "$tmpdir/mysqld.pid" 2>/dev/null || true)
if [ "$server_pid" = "" ]; then
return 0
fi
# Send kill signal
kill "$server_pid"
for i in $(seq 1 180); do
sleep 0.1 # A full second is too long, but we need to give the server _some_ time.
if ! $(ps $server_pid >/dev/null 2>&1); then
return 0
fi
sleep 0.9
done
# The server hasn't shut down in a timely manner
echo "Error: Unable to shut down server with process id $server_pid" >&2
return 1
}
# Runs an arbitrary init sql file supplied in $1. Does not require login access
run_init_sql() {
tmpdir=`mktemp -d`
chown mysql:mysql "$tmpdir"
mysqld --user=mysql --init-file="$1" --socket="$tmpdir/mysqld.sock" --pid-file="$tmpdir/mysqld.pid" > /dev/null 2>&1
result=$?
# Enforce server shutdown, waiting for it to complete so there are no conflicts over port 3306
stop_server "$tmpdir"
rm -rf "$tmpdir"
return $result
}
# To avoid having hardcoded paths in the script, we do a search on the path, as suggested at:
# https://www.debian.org/doc/manuals/developers-reference/ch06.en.html#bpp-debian-maint-scripts
pathfind() {
OLDIFS="$IFS"
IFS=:
for p in $PATH; do
if [ -x "$p/$*" ]; then
IFS="$OLDIFS"
return 0
fi
done
IFS="$OLDIFS"
return 1
}
invoke() {
if pathfind invoke-rc.d; then
invoke-rc.d mysql $1
else
/etc/init.d/mysql $1
fi
}
# Check if server is able to start. If it fails we abort early and refer
# the user to a wiki page with solutions for common configuration problems.
test_mysqld_startup() {
# mysqld --verbose --help will output a full listing of settings and plugins.
# To do so it needs to initialize the database, so it can be used as a test
# for whether or not the server can start. We redirect stdout to /dev/null so
# only the error messages are left.
result=0
output=$(mysqld --verbose --help --innodb-read-only 2>&1 > /dev/null) || result=$?
if [ ! "$result" = "0" ]; then
echo "ERROR: Unable to start MySQL server:" >&2
echo "$output" >&2
echo "Please take a look at https://wiki.debian.org/Teams/MySQL/FAQ for tips on fixing common upgrade issues." >&2
echo "Once the problem is resolved, run apt-get --fix-broken install to retry." >&2
fi
return $result
}
# The query cache feature has been removed in 8.0, but the 5.7 default config has settings
# for it, causing errors when starting the 8.0 server.
# To work around this we comment out these options if an old 5.7 config file is present.
fix_old_config_options() {
sed -e 's/[[:space:]]*query\_cache*/# Deprecated query cache option disabled by maintainer script\n#query\_cache/' \
/etc/mysql/mysql.conf.d/mysqld.cnf --in-place=.bak
# If nothing was changed, remove the new file
if cmp -s /etc/mysql/mysql.conf.d/mysqld.cnf /etc/mysql/mysql.conf.d/mysqld.cnf.bak; then
mv /etc/mysql/mysql.conf.d/mysqld.cnf.bak /etc/mysql/mysql.conf.d/mysqld.cnf
fi
}
# Check if there is passwordless root login
# Usage: test_mysql_access <tmpdir>
# Params:
# tmpdir - Location of mysqld.sock file
test_mysql_access() {
local tmpdir=$1
mysql --no-defaults -u root --socket="$tmpdir/mysqld.sock" </dev/null >/dev/null 2>&1
}
this_version=5.7
# This is necessary because mysql_install_db removes the pid file in /var/run
# and because changed configuration options should take effect immediately.
# In case the server wasn't running at all it should be ok if the stop
# script fails. I can't tell at this point because of the cleaned /var/run.
set +e; invoke stop; set -e
case "$1" in
configure)
# INSERT ANY VERSIONED UPGRADE PATH HANDLING HERE AND NO LATER
# Versioned upgrade path handling must be done before freeze mode detection;
# otherwise the following freeze mode handling may cause upgrade path
# handling to be skipped over multiple version upgrades, meaning that the
# upgrade path handling never runs on some systems where freeze mode
# remains active for a long period.
if [ -e /etc/mysql/FROZEN -o -h /etc/mysql/FROZEN ]; then
error_message="MySQL has been frozen to prevent damage to your system. Please see /etc/mysql/FROZEN for help."
logger -p daemon.err -t /etc/init.d/mysql -i "$error_message"
db_input critical mysql-server-$this_version/installation_freeze_mode_active || true
db_go
db_stop
echo "$error_message" 1>&2
exit 0
fi
mysql_datadir=/usr/share/mysql
mysql_statedir=/var/lib/mysql
mysql_rundir=/var/run/mysqld
mysql_logdir=/var/log/mysql
mysql_cfgdir=/etc/mysql
mysql_upgradedir=/var/lib/mysql-upgrade
mysql_filesdir=/var/lib/mysql-files
mysql_keyringdir=/var/lib/mysql-keyring
# mysqld gets called during postinst configure, so any
# updates to the AppArmor profile must be loaded first (before the
# dh_apparmor snippet added by debhelper does it properly at the end of
# this script). Otherwise, mysqld cannot for example load
# /etc/mysql/mysqld.conf.d/ on upgrade from 5.5 to 5.6, which was added in
# 5.6 packaging but not present in the AppArmor profile shipped with 5.5
# packaging.
#
# This a workaround. Status is tracked at https://launchpad.net/bugs/1435368
if aa-status --enabled 2>/dev/null; then
# It is common for this to fail because
# /etc/apparmor.d/local/usr.sbin.mysqld doesn't exist (eg. on first
# install). But if this happens, then the workaround is not required,
# so it doesn't matter. If instead it causes a security issue, then
# that doesn't really matter here as dh_apparmor should handle that
# correctly later on.
apparmor_parser -r -T -W /etc/apparmor.d/usr.sbin.mysqld 2>/dev/null || true
fi
# New packaging paradigm for my.cnf as of Dec-2014 for sharing mysql
# variants in Ubuntu.
/usr/share/mysql-common/configure-symlinks install mysql "$mysql_cfgdir/mysql.cnf"
# Ensure the existence and right permissions for the database, socket
# folder, and log files.
for d in $mysql_statedir $mysql_filesdir $mysql_keyringdir $mysql_logdir $mysql_rundir
do
if [ ! -d "$d" -a ! -L "$d" ]; then mkdir "$d"; fi
chown -R mysql:mysql $d
chmod 0700 $d
done
# When creating an ext3 jounal on an already mounted filesystem like e.g.
# /var/lib/mysql, you get a .journal file that is not modifyable by chown.
# The mysql_datadir must not be writable by the mysql user under any
# circumstances as it contains scripts that are executed by root.
set +e
chown -R 0:0 $mysql_datadir
touch $mysql_logdir/error.log
chown -R mysql:adm $mysql_logdir
chmod 0750 $mysql_logdir
chmod 0640 $mysql_logdir/error.log
set -e
# This is important to avoid dataloss when there is a removed
# mysql-server version from Woody lying around which used the same
# data directory and then somewhen gets purged by the admin.
db_set mysql-server/postrm_remove_database false || true
# Fix old options that were deprecated in 5.5 and removed in 5.7
if dpkg --compare-versions "$2" le "8.0.16-0ubuntu3~"; then
echo "Renaming removed key_buffer and myisam-recover options (if present)"
fix_old_config_options
fi
# Sanity check to make sure the server can start
test_mysqld_startup
## On every reconfiguration the maintenance user is recreated.
#
# - It is easier to regenerate the password every time but as people
# use fancy rsync scripts and file alteration monitors, the existing
# password is used and existing files not touched.
# - The echo is just for readability. ash's buildin has no "-e" so use /bin/echo.
# recreate the credentials file if not present or without mysql_upgrade stanza
dc=$mysql_cfgdir/debian.cnf;
if [ -e "$dc" -a -n "`fgrep mysql_upgrade $dc 2>/dev/null`" ]; then
pass="`sed -n 's/^[ ]*password *= *// p' $dc | head -n 1`"
# Basedir is deprecated. Remove the option if it's in an existing debian.cnf
sed -i '/basedir/d' "$dc"
else
pass=`perl -e 'print map{("a".."z","A".."Z",0..9)[int(rand(62))]}(1..16)'`;
if [ ! -d "$mysql_cfgdir" ]; then install -o 0 -g 0 -m 0755 -d $mysql_cfgdir; fi
umask 066
cat /dev/null > $dc
umask 022
echo "# Automatically generated for Debian scripts. DO NOT TOUCH!" >>$dc
echo "[client]" >>$dc
echo "host = localhost" >>$dc
echo "user = debian-sys-maint" >>$dc
echo "password = $pass" >>$dc
echo "socket = $mysql_rundir/mysqld.sock" >>$dc
echo "[mysql_upgrade]" >>$dc
echo "host = localhost" >>$dc
echo "user = debian-sys-maint" >>$dc
echo "password = $pass" >>$dc
echo "socket = $mysql_rundir/mysqld.sock" >>$dc
fi
# If this dir chmod go+w then the admin did it. But this file should not.
chown 0:0 $dc
chmod 0600 $dc
# Initiate database. Output is not allowed by debconf :-(
# If database doesn't exist we create it.
if [ ! "$(ls -A "${mysql_statedir}")" ] && [ -d "${mysql_filesdir}" ]; then
existingdatabase=0
initfile=`mktemp --tmpdir=/var/lib/mysql-files/`
touch "$initfile"
chmod 600 "$initfile"
chown mysql:mysql "$initfile"
echo "USE mysql; " >> "$initfile"
db_get mysql-server/root_password && rootpw="$RET"
if [ ! -z "$rootpw" ]; then
rootpw=$(printf %q "${rootpw}")
echo "ALTER USER 'root'@'localhost' IDENTIFIED BY '$rootpw';" >> "$initfile"
fi
echo "CREATE USER IF NOT EXISTS 'debian-sys-maint'@'localhost' IDENTIFIED BY '$pass';" >> "$initfile"
echo "GRANT ALL ON *.* TO 'debian-sys-maint'@'localhost' WITH GRANT OPTION;" >> "$initfile"
echo "SHUTDOWN;" >> "$initfile"
# mysqld returns an error instead of a warning if CREATE USER IF NOT
# EXISTS fails, so ignore errors as a workaround. See:
# http://bugs.mysql.com/bug.php?id=80636
mysqld --initialize-insecure --user=mysql --init-file="$initfile"> /dev/null 2>&1 || true
rm "$initfile"
else
existingdatabase=1
fi
# To avoid downgrades. This has to happen after the database is created, or --initialize will fail
touch $mysql_statedir/debian-5.7.flag
;;
abort-upgrade|abort-remove|abort-configure)
;;
*)
echo "postinst called with unknown argument '$1'" 1>&2
exit 1
;;
esac
if [ "$1" = "configure" ]; then
# Here we check to see if we can connect as root without a password
# this should catch upgrades from previous versions where the root
# password wasn't set. If the connection succeeds we install the
# auth_socket plugin and enable it for the root user to improve
# security.
tmpdir=$(mktemp -d)
chown mysql:mysql "$tmpdir"
mysql_statedir=/var/lib/mysql
result=0
start_server "$mysql_statedir" "$tmpdir" || result=$?
if [ $result -ne 0 ]; then
echo "Warning: Unable to start the server." >&2
elif test_mysql_access "$tmpdir"; then
db_get mysql-server/root_password && rootpw="$RET"
if [ ! -z "$rootpw" ]; then
stop_server "$tmpdir"
rootpw=$(printf %q "${rootpw}")
initfile=`mktemp --tmpdir=/var/lib/mysql-files/`
chown mysql:mysql "$initfile"
echo "ALTER USER 'root'@'localhost' IDENTIFIED WITH 'caching_sha2_password' BY '$rootpw';" >> "$initfile"
echo "SHUTDOWN;" >> "$initfile"
run_init_sql "$initfile"
rm "$initfile"
else
# Try to install auth_socket plugin. This throws an error if the plugin is
# already installed, which would end execution of the init sql to stop if
# --init-file was used. Bug: http://bugs.mysql.com/bug.php?id=80642
pluginfile=`mktemp --tmpdir=/var/lib/mysql-files/`
echo "INSTALL PLUGIN auth_socket SONAME 'auth_socket.so';" >> "$pluginfile"
mysql --no-defaults --socket="$tmpdir/mysqld.sock" -uroot < "$pluginfile" > /dev/null 2>&1 || true
rm "$pluginfile"
stop_server "$tmpdir"
initfile=`mktemp --tmpdir=/var/lib/mysql-files/`
chown mysql:mysql "$initfile"
# If there is no root password set we enable the auth_socket plugin for the root user
echo "USE mysql;" >> "$initfile"
echo "ALTER USER 'root'@'localhost' IDENTIFIED WITH 'auth_socket';" >> "$initfile"
echo "SHUTDOWN;" >> "$initfile"
# The INSTALL PLUGIN line will throw an error if the plugin is already installed
run_init_sql "$initfile"
rm "$initfile"
fi
else
stop_server "$tmpdir"
fi
rm -rf "$tmpdir"
fi
# forget we ever saw the password. don't use reset to keep the seen status
db_set mysql-server/root_password ""
db_set mysql-server/root_password_again ""
db_stop # in case invoke failes
# Automatically added by dh_apparmor/3.0.4-2ubuntu2.4
if [ "$1" = "configure" ]; then
APP_PROFILE="/etc/apparmor.d/usr.sbin.mysqld"
if [ -f "$APP_PROFILE" ]; then
# Add the local/ include
LOCAL_APP_PROFILE="/etc/apparmor.d/local/usr.sbin.mysqld"
test -e "$LOCAL_APP_PROFILE" || {
mkdir -p `dirname "$LOCAL_APP_PROFILE"`
install --mode 644 /dev/null "$LOCAL_APP_PROFILE"
}
# Reload the profile, including any abstraction updates
if aa-enabled --quiet 2>/dev/null; then
apparmor_parser -r -T -W "$APP_PROFILE" || true
fi
fi
fi
# End automatically added section
# Automatically added by dh_systemd_enable/13.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
# This will only remove masks created by d-s-h on package removal.
deb-systemd-helper unmask 'mysql.service' >/dev/null || true
# was-enabled defaults to true, so new installations run enable.
if deb-systemd-helper --quiet was-enabled 'mysql.service'; then
# Enables the unit on first installation, creates new
# symlinks on upgrades if the unit file has changed.
deb-systemd-helper enable 'mysql.service' >/dev/null || true
else
# Update the statefile to add new symlinks (if any), which need to be
# cleaned up on purge. Also remove old symlinks.
deb-systemd-helper update-state 'mysql.service' >/dev/null || true
fi
fi
# End automatically added section
# Automatically added by dh_installinit/13.6ubuntu1
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
if [ -z "${DPKG_ROOT:-}" ] && [ -x "/etc/init.d/mysql" ]; then
update-rc.d mysql defaults 19 21 >/dev/null
if [ -n "$2" ]; then
_dh_action=restart
else
_dh_action=start
fi
invoke-rc.d mysql $_dh_action || exit 1
fi
fi
# End automatically added section
exit 0
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